FUEL GAS PIPING TABLE 1215.2(32) CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE G.3_1<i>] 1, 2, 3, 4 GAS: UNDILUTED PROPANE INLET PRESSURE: 2.0 psi PRESSURE DROP: 1.0 psi SPECIFIC GRAVITY: 1.50 INTENDED USE: CSST SIZING BETWEEN 2 PSIG SERVICE AND LINE PRESSURE REGULATOR TUBE SIZE (EHD) 5 FLOW DESIGNATION: 13 15 18 19 23 25 30 31 37 39 46 48 60 62 LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR 10 426 558 927 347 59 l 316 540 27 l 469 243 420 1110 1740 2170 4100 4720 7130 7958 15 200 16 800 10 700 29 400 18 800 17 200 14 900 13 400 34 200 21 700 19 800 17 200 15 400 25 262 701 1120 1380 2560 2950 4560 5147 9550 30 238 640 1030 1270 2330 2690 4180 4719 8710 9790 40 203 554 896 1100 2010 2320 3630 4116 7530 8500 50 181 496 806 986 1790 2070 3260 3702 6730 7610 75 147 196 344 406 663 809 1460 1690 2680 3053 5480 189 333 393 643 768 1 HO 1630 2590 2%: 5300 169 298 350 578 703 1260 1450 2330 2662 4740 137 245 287 477 575 1020 1180 1910 2195 3860 118 213 248 415 501 880 1020 1660 1915 3340 6230 11 000 10 600 12 600 12 200 10 900 80 140 6040 100 124 5410 9530 150 101 4430 7810 8890 200 86 3840 6780 7710 250 77 105 191 222 373 448 785 910 1490 1722 2980 3440 96 173 203 343 411 716 829 1360 1578 2720 3150 82 151 ' 175 298 355 616 716 1160 1376 2350 2730 72 135 158 268 319 550 638 1030 1237 2100 2450 6080 6900 300 69 5560 6300 400 60 4830 5460 500 53 4330 4880 For SI units: 1 fool - 304.8 mm, 1000 British thermal unils per hour _ r 0.293 kW, 1 pound-force persquare inch :: 6.8947 kPa Notes: Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.5 psi (3.4 kPa) [ " based on 13 inch water column (3.2 kPa ) outlet pressure], DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rale. 2 CAUTION: Capacities shown in table are capable of exceeding the maximum capacity for a selected regulator.Consult with regulator or tubing manufacturer for guidance. 3 Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the ltd lowing equation: L - 1.3 n, where L is additional length ( If ) of tubing and n is the number o\ additional fittings, bends, or both. 4 Tableentnes are rounded to 3 significant digits. 5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes.The greater the value of EHD, the greater the gas capacity of the tubing. i 214 2021 UNIFORM PLUMBING CODE
FUEL GAS PIPING TABLE 1215.2(33) CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE G.3.1(j)]1,2,3, 4 GAS: UNDILUTED PROPANE INLET PRESSURE: 5.0 psi PRESSURE DROP: 3.5 psi SPECIFIC GRAVITY: 1.50 TUBE SIZE (EHD) 5 FLOW DESIGNATION: 13 15 16 19 23 25 30 31 37 39 46 46 60 62 LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR I0 826 1070 1710 2060 3150 4000 7830 8950 13 100 14 441 28 600 18 000 16 400 14 200 12 700 31 200 19 900 18 200 15 800 14 100 54 400 34 700 31 700 27 600 24 700 63 800 40 400 36 900 32 000 28 600 25 509 664 1090 1310 2040 2550 4860 5600 8400 9339 30 461 603 999 1190 1870 2340 4430 5100 7680 8564 40 396 520 867 1030 1630 2030 3820 4400 6680 7469 50 352 463 777 926 1460 1820 3410 3930 5990 6717 75 284 376 637 757 1210 1490 2770 3190 4920 5539 10 300 11 600 11 200 10 000 20 300 19 600 17 600 14 400 12 500 23 400 22 700 20 300 16 600 14 400 80 275 363 618 731 1170 1450 2680 3090 4770 5372 9990 100 243 324 553 656 1050 1300 2390 2760 4280 4830 8930 196 262 453 535 866 1060 1940 2240 3510 3983 7270 169 226 393 464 755 923 1680 1930 3050 3474 6290 150 8210 200 71.30 250 150 202 352 415 679 136 183 322 379 622 117 158 279 328 I 542 104 140 251 828 1490 1730 2740 3124 757 1360 1570 2510 2865 657 1170 1360 2180 2498 589 1050 1210 1950 2247 5620 6390 11 200 10 300 12 900 11 700 10 200 300 5120 5840 400 4430 5070 8920 500 294 488 3960 4540 8000 9110 For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour - 0.293 kW, 1 pound-force persquare inch - 6.8947 kPa Notes: Table does not include effect of pressure drop across the line regulator Where regulator loss exceeds 0.5 psi (3.4 k.Pa ) [based on 13 inch wateT column (3.2 kPa) outlet pressure], DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate. 2 CAUTION: Capacities shown in table are capable of exceeding the maximum capacity lor a selected regulator. Consult with regulator or tubing manufacturer for guidance. 3 Table includes losses for four 90 degree (1.57 rad} bends and two end fittings. Tubing mns with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation: L - 1.3 n, where L is additional length (ft) of tubing and n is the number of additional fillings, bends, or both. 4 Table entries are rounded to 3 significant digits. 5 EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing. l 2021 UNIFORM PLUMBING CODE 215
FUEL GAS PIPING TABLE 1215.2(34) POLYETHYLENE PLASTIC PIPE [NFPA 54:TABLE 6.3.1(k)]* GAS: UNDILUTED PROPANE INLET PRESSURE: 11.0 in. w.c. PRESSURE DROP: 0.5 in. w.c. SPECIFIC GRAVITY: 1.50 I INTENDED USE:PE PIPE SIZING BETWEEN INTEGRAL SECOND-STAGE REGULATOR AT TANK OR SECOND-STAGE (LOW PRESSURE) REGULATOR AND BUILDING PIPE SIZE (inch) NOMINAL OD: V4 W 1 VA 1Vz 2 3 4 DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11 ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682 LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR 10 340 680 1230 2130 3210 5770 16 000 11 000 30 900 21 200 17 000 14 600 12 900 20 233 468 844 1460 2210 3970 30 187 375 677 1170 1770 3180 8810 40 160 321 580 1000 1520 2730 7540 50 142 285 514 890 1340 2420 66 80 60 129 258 466 807 1220 2190 6050 II 700 10 800 10 000 70 119 237 428 742 1120 2010 5570 80 110 221 398 690 1040 1870 5180 90 103 207 374 648 978 1760 4860 9400 100 98 196 353 612 924 1660 4590 8900 125 87 173 313 542 819 1470 4070 7900 150 78 157 284 491 742 1330 3690 7130 175 72 145 261 452 683 1230 3390 6560 200 67 135 243 420 635 1140 3160 6100 250 60 119 215 373 563 1010 2800 5410 300 54 108 195 338 510 916 2530 4900 350 50 99 179 311 469 843 2330 4510 400 46 92 167 289 436 784 2170 4190 450 43 87 157 271 409 736 2040 3930 500 41 82 148 256 387 695 1920 3720 For SI units: 1 inch ~~ 25 mm, 1 fool 304.8 mm, 1000 British thermal units per hour - - 0.293 kWh 1 inch water column '0.249 kPa * Table entries are rounded to 3 significant digits. 216 2021 UNIFORM PLUMBING CODE
FUEL GAS PIPING TABLE 1215.2(35) POLYETHYLENE PLASTIC PIPE [NFPA 54:TABLE 6.3.1(I)]* GAS: UNDILUTED PROPANE INLET PRESSURE: 2.0 psi PRESSURE DROP: 1.0 psi SPECIFIC GRAVITY: 1.50 INTENDED USE: PE PIPE SIZING BETWEEN 2 PSI SERVICE REGULATOR AND LINE PRESSURE REGULATOR PIPE SIZE (inch) NOMINAL OD: V& Y* 1 VA VA 2 3 4 DESIGNATION: SDR 9.3 SDR 11 SDR 11 SDR 10 SDR 11 SDR 11 SDR 11 SDR 11 ACTUAL ID: 0.660 0.860 1.077 1.328 1.554 1.943 2.864 3.682 LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR 10 3130 6260 II 300 19 600 13 400 10 800 29 500 20 300 16 300 14 000 12 400 11 200 10 300 53 100 36 500 29 300 25 100 22 200 20 100 18 500 17 200 16 200 15 300 13 500 12 300 11 300 10 500 147 000 101 000 81 100 69 400 61 500 284 000 195 000 157 000 134 100 119 000 20 2150 4300 7760 30 1730 3450 6230 40 1480 2960 5330 9240 50 1310 2620 4730 8190 60 1190 2370 4280 7420 55 700 51 300 47 700 44 700 42 300 108 000 99 100 92 200 86 500 81 700 70 1090 2180 3940 6830 80 1010 2030 3670 6350 9590 90 952 1910 3440 5960 9000 100 899 1800 3250 5630 8500 125 797 1600 2880 4990 7530 37 500 33 900 31 200 29 000 25 700 72 400 65 600 60 300 56 100 49 800 150 722 1450 2610 4520 6830 175 664 1330 2400 4160 6280 200 618 1240 2230 3870 5840 250 548 1100 1980 3430 5180 9300 300 496 994 1790 31.10 4690 8430 23 300 21 500 12 000 18 700 17 700 45 100 41 500 38 600 36 200 34 200 350 457 914 1650 2860 4320 7760 400 425 851 1530 2660 4020 7220 450 399 798 1440 2500 3770 6770 500 377 754 1360 2360 3560 6390 550 358 716 1290 2240 3380 6070 16 800 16 000 15 400 14 700 14 200 32 500 31 000 29 700 28 500 27 500 600 341 683 1230 2140 3220 5790 650 327 654 1180 2040 3090 5550 700 314 628 1130 1960 2970 5330 750 302 605 1090 1890 2860 5140 800 292 585 1050 1830 2760 4960 13 700 13 300 12 900 12 500 12 200 26 500 25 700 24 900 24 200 23 500 850 283 566 1020 1770 2670 4800 900 274 549 990 1710 2590 4650 950 266 533 961 1670 2520 4520 1000 259 518 935 1620 2450 4400 1100 246 492 888 1540 2320 4170 11 500 11 000 10 600 10 100 22 300 21 300 20 400 19 600 18 900 1200 234 470 847 1470 2220 3980 1300 225 450 811 1410 2120 3810 1400 216 432 779 1350 2040 3660 1500 208 416 751 1300 1960 3530 9760 1600 201 402 725 1260 1900 3410 9430 18 200 17 600 17 100 16 600 16 200 1700 194 389 702 1220 1840 3300 9130 1800 188 377 680 1180 1780 3200 8850 1900 183 366 661 1140 1730 3110 8590 2000 178 356 643 1110 1680 3020 8360 For SI units: ] inch = 25 mm, ] fool = 304.8 nimh 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa * Table entries are rounded to 3 significant digits. 2021 UNIFORM PLUMBING CODE 217
FUEL GAS PIPING TABLE 1215.2(36) POLYETHYLENE PLASTIC TUBING [NFPA 54:TABLE G.3.1(m)]2 GAS: UNDILUTED PROPANE INLET PRESSURE: 11.0 in. w.c. PRESSURE DROP: 0.5 in. w.c. SPECIFIC GRAVITY: 1.50 INTENDED USE: SIZING BETWEEN INTEGRAL 2-STAGE REGULATOR AT TANK OR SECOND-STAGE (LOW-PRESSURE REGULATOR) AND THE BUILDING t PLASTIC TUBING SIZE (CTS)' (inch) NOMINAL OD: ' A 1 DESIGNATION: SDR 7 SDR 11 ACTUAL ID: 0.445 0.927 LENGTH (feet) CAPACITY IN THOUSANDS OF BTU PER HOUR 10 121 828 20 83 569 30 67 457 40 57 391 50 51 347 60 46 314 70 42 289 80 39 269 90 37 252 100 35 238 125 31 211 150 28 191 175 26 176 200 24 164 225 22 154 250 21 145 275 20 138 300 19 132 350 18 121 400 16 113 450 15 106 500 15 100 For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, I inch water column1= 0.249 kPa Notes: CTS =Copper tube size. " Table entries are rounded to 3 significant digits. i 218 2021 UNIFORM PLUMBING CODE
CHAPTER 13 HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS Part I-General Requirements. 1302.0 Design Requirements. 1302.1 Risk Categories. Activities,systems,or equipment| shall be designed to meet Category 1 through Category 4 requirements, as detailed in this chapter.[NFPA 99:4.1 J 1302.1.1 Processes and Operations. The health care facility's governing body shall establish the processes and operations that arc planned for the health care facility [NFPA 99:4.2. 1 ] 1302.1.1.1 Risk Categories. The governing body shall conduct risk assessments and shall determine risk categories based on the character of the processes and operations conducted in the health care facility. [NFPA 99:4.2.1.1] 1302.1.2 Risk Assessment. Risk categories shall be classified by the health care facility’s governing body by| following and documenting a defined risk assessment procedure. [NFPA 99:4.2.2] 1302.1.2.1 Documents to the Authority Having Jurisdiction. V here required by the Authority Having Jurisdiction (AHJ), the risk assessment shall be provided to the AHJ for review based on the character of the processes and operations conducted in the health care facility. [NFPA 99:4.2.2.1] 1302.1.3 Documented Risk Assessment. Adocumented risk assessmentshall not be required where Category 1 is selected. [NFPA 99:4.2.3] 1302.2 Patient Care Spaces. The health care facility’s governing body or its designee shall establish the following areas in accordance with the type of patient care anticipated (see definition of patient care space in Chapter 2): (1) Category 1 spaces ( 2) Category 2 spaces (3) Category 3 spaces (4) Category 4 spaces [NFPA 99:1.3.4.1] 1302.3 Anesthesia. It shall be the responsibility of the health care facility's governing body to designate ancsthctiz-| ing locations. [NFPA 99:1.3.4.2] 1302.4 Wet Procedure Locations. It shall be the responsibility ofthe health care facility's governing body to dcsig-| nate wet procedure locations. [NFPA 99:1.3.4.3] 11301.0 General Requirements. 1301.1 Applicability.This chapter applies to the special fixtures and systems in health care facilities; the special plumbing requirements for such facilities; and the installation, testing, and verification of Categories l , 2, and 3 medical gas and medical vacuum piping systems, except as otherwise indicated in this chapter, from the central supply system to the station outlets or inlets in hospitals, clinics, and other health care facilities. Other plumbing in such facilities shall comply with other applicable sections of this code. For Category 3 medical gas systems, only oxygen and nitrous oxide shall be used. 1301.2 Where Not Applicable.This chapter does not apply to the following except as otherwise addressed in this chapter: (1) Cylinder and containcr management, storage, and reserve requirements (2) Bulk supply systems (3) Blcctricai connections and requirements (4) Motor requirements and controls (5) Systems having nonstandard operating pressures (6) Waste anesthetic gas disposal (WAGD) systems (7) Surface-mounted medical gas rail systems (8) Breathing air replenishment (BAR) systems (9) Portable compressed gas systems (10) Medical support gas systems (11) Gas-powered device supply systems (12) Scavenging systems 1301.3 Conflict of Requirements. The requirements of this chapter shall not be interpreted to conflict with the requirements of NFPA 99. For requirements of portions of medical gas and vacuum systems not addressed in this chapter or medical gas and vacuum systems beyond the scope of this chapter refer to NFPA 99. 1301.4 Where Required. Construction and equipment requirements shall be applied only to new construction and new equipment, except as modified in individual sections of this chapter. [NFPA 99:1.3.2] 1301.5 Existing Systems. Only the altered, renovated, or modernized portion of an existing system or individual component shall be required to meet the installation and equipment requirements stated in this code. If the alteration, |renovation, or modernization adversely impacts the existing performance requirements of a system or component, additional upgrading shall be required . An existing system that is not in strict compliance with the provisions of this code shall be permitted to be continued in use, unless the Authority Having Jurisdiction has determined that such use constitutes a distinct hazard to life. [NFPA 99:1.3.2.1 -1.3.2.3] I 1303.0 Health Care Facilities. 1303.1 Drinking Fountain Control Valves. Drinking fountain control valves shall be flush-mounted or fully recessed where installed in corridors or other areas where patients arc transported on a gurney, bed, or wheelchair. 1303.2 Psychiatric Patient Rooms. Piping and drain traps in psychiatric patient rooms shall be concealed. Fixtures and fittings shall be resistant to vandalism. 2021 UNIFORM PLUMBING CODE 219
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1303.3 Locations for Ice Storage, lee makers or ice storage containers shall be located in nursing stations orsimilarly supervised areas to minimize potential contamination. 1303.4 Sterilizers and Bedpan Steamers. Sterilizers and bedpan steamersshall be installed in accordance with the manufacturer’s installation instructions and comply with Section 1303.4. 1 and Section 1303.4.2. 1303.4.1 Drainage Connections. Sterilizers and bedpan steamers shall be connected to the sanitary drainage system through an air gap in accordance with Section 801.2. The size of indirect waste piping shall be not less than the size of the drain connection on the fixture. Bach such indirect waste pipe shall not exceed 15 feet (4572 mm) in length and shall be separately piped to a receptor. Such receptors shall be located in the same room as the equipment served, bxccpt for bedpan steamers, such indirect waste pipes shall not require traps. A trap having a seal of not less than 3 inches(76 mm) shall be provided in the indirect waste pipe for a bedpan steamer. 1303.4.2 Vapor Vents and Stacks. Where a sterilizer or bedpan steamer has provision for a vapor vent and such a vent is required by the manufacturer, the vent shall be extended to the outdoors above the roof Sterilizer and bedpan steamer vapor vents shall be installed in accordance with the manufacturer’ s installation instructions and shall not be connected to a drainage system vent 1303.5 Aspirators. Provisions for aspirators or other watersupplied suction devices shall be installed with the specific approval of the Authority Having Jurisdiction. Where aspirators are used for removing body fluids, they shall include a collection container to collect liquids and solid particles. Aspirators shall indirectly discharge to the sanitary drainage system through an air gap in accordance with Section 806.1. The potable water supply to an aspirator shall be protected by a vacuum breaker or equivalent backflow protection device in accordance with Section 603.5.9. 1303.6 Drains. Drains shall be installed on dryers, aftercoolers, separators, and receivers. 1303.7 Clinical Sinks. Clinical sinks shall be installed in accordance with the manufacturer’s installation instructions and shall comply with Section 1303.7. 1 . 1303.7.1 Drainage Connection. Clinical sinks shall be directly connected to the sanitary drainage system and shall be provided with approved flushing devices installed in accordance with Section 413.1. 1303.8 Water Supply for Hospitals. Hospitals shall be provided with not less than two approved potable water sources that arc installed in such a manner as to prevent the interruption of water service. 1303.9 Work Performed in Occupied Healthcare Facilities. In existing, occupied, inpatient healthcare facilities, all plumbing systems installation and remodel work shall be performed by personnel certified in accordance with ASSE/IAPMO * 12010, ASSII/1APMO 12030 and ASSE/1APMO 12040. 1304.0 Medical Gas and Medical Vacuum Piping Systems. 1304.1 General. The installation of medical gas and medical vacuum piping systems shall comply with the requirements of this chapter. 1304.2 Certification of Systems. Certification of med- « ical gas and vacuum systems shall comply with the requirements of Section 1306.0. 1304.3 Construction Documents. Before a medical gas « or medical vacuum system is installed or altered in a hospital, medical facility, or clinic, duplicate construction documents shall be filed with the Authority Having Jurisdiction. Approval of the plans shall be obtained before issuance of a permit by the Authority Having Jurisdiction. 1304.3.1 Requirements. Construction documents shall show the following: ^ (!) Plot plan of the site, drawn to scale, indicating the location of existing or new cylinder storage areas, property lines, driveways, and existing or proposed buildings. (2) Piping layout of the proposed piping system or alteration, including alarms, valves, the origin of gases, user outlets, and user inlets. The demand and loading of piping, existing or future,shall also be indicated. (3) Complete specification of materials. 1304.4 Extent Of Work. Construction documentssubmitted to the Authority Having Jurisdiction shaLl clearly indicate the ^ nature and extent of the work proposed and shall show in detail that such work will be in accordance with the provisions of this chapter. 1304.5 Record. A record of as-built plans and valve identification records shall remain on the site. 1305.0 System Performance. 1305.1 Required Operating Pressures. Medical gas and vacuum systems shall be capable of delivering service in the pressure ranges listed in fable 1305.1. 1305.2 Minimum Flow Rates. Medical gas and vacuum systems shall be capable of supplying the flow rates listed in Table 1305.2. 1305.3 Minimum Station Outlets and Inlets. Station outlets and inlets for medical gas and vacuum systems shall be provided as listed in Table 1305.3. 1306.0 System Certification. « 1306.1 Certification. Prior to a medical gas or vacuum systern being placed in service, such system shall be certified in ^ accordance with Section 1306.2. 1306.2 CertificationTests. Certification tests, verified and attested to by the certification agency, shall include the following: (1) Verifying in accordance with the installation requirements. (2) Testing and checking for leakage, correct zoning, and identification of control valves. 220 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS TABLE 1305.1 STANDARD DESIGNATION COLORS AND OPERATING PRESSURES FOR GAS AND VACUUM SYSTEMS [NFPA 99:TABLE 5,111] ABBREVIATED NAME COLORS (BACKGROUND/ TEXT) STANDARD GAUGE PRESSURE GAS SERVICE Medical air Med Air Yellow/black 50-55 psi Carbon dioxide C02 Gray black or gray/white 50-55 psi Helium He Brown/white 50-55 psi Nitrogen N Black:white 2 160-185 psi Nitrous oxide N Blue/white 2Q 50-55 psi Oxygen ° 2 Green/white or white/green 50-55 psi Oxygen/carbon dioxide mixtures 02/C02 n% {n = % of CQ2 ) Green white 50-55 psi Medical-surgical vacuum Med Vac White/black 15 inch to 50 inch HftV Waste anesthetic gas disposal WAGD Violet/white Varies with system type Colors as above; major gas for background/minor gas for text Other mixtures Gas A% / Gas B% None Nonmedical air (Category 3 gas-powered device) Nonmedical and Category 3 vacuum Laboratory air Laboratory mf vacuum Instrument air Yellow-and-white diagonal stripe ' black: None White-and-gjack diagonal stripe black boxed Yellow-and-wnite checker board/black White-and-black checkerboard/black boxed Red/white For SI units: l pound-force per square inch -6. S947 kPa, 1 inch of mercury vacuum (HgV i 3.386 kPa None None None 160-185 psi (3) Checking for identification and labeling of pipelines, station outlets, and control valves. (4) Testing for cross-connection, flow rate, system pressure drop, and system performance. (5) Functional testing of pressure relief valves and safety valves. (6) Functional testing of sources of supply. (7) Functional testing of alarm systems, including accuracy of system components. (8) Purge flushing of system and filling with specific source gases. (9) Testing for purity and cleanliness of source gases. (10) Testing for specific gas identity at each station outlet. )) 1306.3 Report Items. A report that includes the specific items addressed in Section 1306.2, and other information required by this chapter, shall be delivered to the Authority Having Jurisdiction prior to acceptance of the system. )) 1306.4 Components. Functioning of alarm components shall be verified in accordance with the testing and monitoring requirements of the manufacturer and the Authority Having Jurisdiction. helium, nitrogen, instrument air, and mixtures thereof. Wherever the name of a specific gas service occurs, the provision shall apply only to that gas. [NFPA 99:5.1.1.3] TABLE 1305.2 MINIMUM FLOW RATES {cubic feet per minute) MEDICAL SYSTEM FLOW RATE 0.71 CFM per outlet 1 0.71 CFM per outlet 1 0.71 CFM per outlet 1 15 CFM free air per outlet I SCFM per inlet3 0.71 CFM per outlet 1 Oxygen Nitrous Oxide Medical Compressed Air Nitrogen Vacuum Carbon Dioxide Helium 0.71 CFM per outlet For SI units:. 1 cubic foot perminute (CFM)= 0.47 L ; s .Notes: Aroom designed for a permanently located respiratory ventilator or anesthesia machine shall have an outlet capableofa flow rate of 6.36 CFM (3.0 L/s) at the station outlet. 2 For testing and certification purposes, individual station inlets shall be capable of a flow rate of 3 SCFM ( 1.4 L/s), while maintaining a system pressure of not less than 12 inches of mercury (41 kPa ) at the nearest adjacent vacuum inlet. l 1307.2 Nature of Hazards of Gas and Vacuum Systems. Potential fire and explosion hazards associated with positive pressure gas central piping systems and medical-surgical vacuum systems shall be considered in the design, installation, testing, operation, and maintenance of these systems. [NFPA 99:5.1.2] 1307.3 Permitted Locations for Medical Gases. Ccntral supply systems for oxygen, medical air, nitrous oxide, | Part II-Category 1 Piped Gas and Vacuum Systems. » 1307.0 Central Supply Systems. )) 1307.1Terms. W here the terms medical gas or medical support gas occur, the provisions shall apply to all piped systems for oxygen, nitrous oxide, medical air, carbon dioxide, 2021 UNIFORM PLUMBING CODE 221
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS TABLE 1305.3 MINIMUM OUTLETS AND INLETS PER STATION MEDICAL VACUUM MEDICAL NITROUS OXIDE CARBON DIOXIDE LOCATION OXYGEN NITROGEN HELIUM AIR Patient rooms tor medical/surgical, obsterrics, and pediatrics I /bed 1/bed 1/bed Examination/treatment for nursing units Intensive care (all) I /bed 3/bed 1 bed 3 bed 2,bed Nurserv 1 mf 2 /bed 2,bed 1/bed General operating rooms 3/room4 2/room 2/room I /room I /room Cystoscopic and special invasive procedures 3/room4 2/room 2/room Recovery delivery and 1abor/deI ivery/recovery rooms2 2/bed 2/room 2/bed 3/room4 1/bed 1/room Labor rooms l /bed 1 /bed 1/bed First aid and emergency treatment 1/bed4 I /bed 1/bed 1/station 1/station 1/station Autopsy Anesthesia workroom I /station Notts: Includes pediatric nursery. 1 Includes obstetric recovery. 3 Emergency trauma rooms used for surgical procedures shall be classified as general operating rooms. 4 Vacuum inlets required arc in addition to inlets used as part of a scavenging system for removal of anesthetizing gases. i carbon dioxide, and all other patient medical gases shall be piped only to medical gas outlets complying with Section 1315.0, into areas where the gases will be used under the direction of licensed medical professionalsfor purposes congruent with the following: (1) Direct respiration by patients. (2) Clinical application of the gas to a patient sucli as the use of an insufflator to inject carbon dioxide into patient body cavities during laparoscopic surgery and carbon dioxide used to purge heart-lung machine blood flow' ways. , (3) Medical device applications directly related to respiration. (4) Power for medical devices used directly on patients. (5) Calibration of medical devices intended for Section 1307.3(1) through Section 1307.3(4). (6) Simulation centers for the education, training, and assessment of health care professionals. [NFPA 99:5.1.3.5.2] yy 13074 Materials. Materials used in central supply systems shall meet the following requirements: (1) In those portions of systems intended to handle oxygen at gauge pressures greater than 350 pounds-force per square inch ( psi) (2413 kPa), interconnecting hose shall contain no polymeric materials. (2) In those portions of systems intended to handle oxygen or nitrous oxide material, construction shall be compatible w ith oxygen under the temperatures and pressuresto which the components can be exposed in the containment and use of oxygen, nitrous oxide, mixtures of these gases, or mixtures containing more than 23.5 percent oxygen. (3) If potentially exposed to cryogenic temperatures, materials shall he designed for low temperature service. (4) If intended for outdoor installation, materials shall be installed per the manufacturer’s requirements. [NFPA 99:5.1.3.5.4] 1308.0 Pressure-Regulating Equipment. « 1308.1 Where Required. Pressure-regulating equipment shall be installed in the supply main upstream of the final line- ^ pressure valve. Where multiple piping systems for the same gas at different operating pressures are required, separate pressure-regulating equipment, relief valves, and source shutoff valves shall be provided for each pressure. 1308.2 Pressure Relief Valves. All pressure relief valves shall meet the following requirements: ^ (1) They shall be of brass, bronze, or stainless steel construction. (2) They shall be designed for the specific gas service. (3) They shall have a relief pressure setting not higher than the maximum allowable working pressure (MAWP) of the component with the lowest working pressure rating in the portion of the system being protected. (4) They shall he vented to the outside of the building, except that relief valvesfor compressed air systems having less than 3000 cubic feet (84 950 L) at STP shall be permitted to be diffused locally by means that will not restrict the flow. (5) They shall have a vent discharge line that is not smaller than the size of the relief valve outlet. (6) Where two or more relief valves discharge into a common vent line, its internal cross-sectional area shall be not less than the aggregate cross-sectional area of all relief valve vent discharge lines served . 222 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS (7) They shall not discharge into locations creating potential hazards. (8) They shall have the discharge terminal turned down and screened to prevent the entry of rain,snow, or vermin. (9) They shall be designed in accordance with ASML B31.3. [NFPA 99:5.1.3.5.6.1] yy 1308.3 Pressure-Relief Valve Requirements. Central supply systems for positive pressure gases shall include one or more relief valves, all meeting the following requirements: ( 1 ) They shall be located between each final line regulator and the source valve. (2) They shall have a relief setting that is 50 percent above the normal system operating pressure, as indicated in Table 1305.1. [NFPA 99:5.1.3.5.6.3] {1) Either a disconnect switch for each major electrical component or a single disconnect that deactivates all electrical components in the concentrator unit. (2) Motor starting devices with overload protection for any component with an electrical motor over 2 hp {1.5 kW). [NFPA 99:5.1.3.5.11.7] 1309.8 Vent Valve. A vent valve shall be provided as follows: (1) Located on the source side of the concentrator outlet isolation valve to permit the operation of the oxygen concentrator unit for validation, calibration, and testing while the unit is isolated from the pipeline system. (2) Sized to allow for at least 25 percent of the oxygen concentrator unit flow. (3) Vented to a location compliant with Section 1309.8. 1 . [NFPA 99:5.1.3.5.11.8] 1309.8.1 Ventfng of Relief Valves. Indoor supply systems shall have all relief valves vented per Section 1308.2(4) through Section 1308.2(9). [NFPA 99:5,1,3.3,3,2] 1309.9 Valved Sample Port. A DN8 (NPS 1/4) valved sample port shall be provided near the oxygen concentration monitor sensor connection for sampling of the gas from the oxygen concentrator unit. [NFPA 99:5.1.3.5.11.9] 1309.10 Suitable Filter. At least one 0.1 micron filter suitable for oxygen sendee shall be provided at the outlet of the oxygen concentrator supply unit. [NFPA 99:5.1.3.5.11.10] 1309.11 Check Valve. A check valve shall be provided at the outlet of the oxygen concentrator supply unit to prevent backflow' into the oxygen concentrator supply unit and to allow service to the unit. [NFPA 99:5.1.3.5.11.11] 1309.12 Outlet Valve. An outlet valve shall be provided to isolate all components of the oxygen concentrator from the pipeline with the following characteristics: ( 1 ) Flic valve shall have both manual and automatic actuation wdth visual indication of open or closed. (2) The valve shall close automatically whenever the oxygen concentrator unit is not producing oxygen of a concentration equal to that in Section 1309.1. (3) Continuing operation of the oxygen concentrator supply unit through the vent mode shall be permitted with the isolating valve closed. (4) The isolating valve, when automatically closed due to low concentration, shall require manual reset to ensure the oxygen concentrator supply unit is examined prior to return to service. (5) Closing the isolating valve, whether automatically or manually, shall activate an alarm signal at the master alarms (sec Section 1317.1. 1) indicating that the oxygen concentrator supply unit is disconnected. [NFPA 99:5.1.3.5.11.12] 1309.13 Oxygen Concentration Monitor. The oxygen concentrator supply unit shall be provided w ith an oxygen concentration monitor with the following characteristics: (1) The monitor shall be capable of monitoring 99 percent oxygen concentration with 1 percent accuracy. 1309.0 Oxygen Concentrator Supply Units. 1309.1 Oxygen Requirements. Oxygen concentrator supply units for use with medical gas pipelines shall produce oxygen meeting the requirements of Oxygen 93 USP or Oxygen USP. [NFPA 99: 5.1.3.5.11.1] 1309.2 Particulate Size. Output shall have less than or equal to 1.686 x 10"6 pounds per cubic yard (1 mg/m3 ) of permanent particulates sized 1 micron or larger at normal atmospheric pressure. [NFPA 99:5.1.3.5.11.2] 1309.3 Suitability. Materials of construction on the air side of the oxygen concentrator unit shall be suitable for the service as determined by the manufacturer. [ NFPA 99:5.1.3.5.11.3] 1309.4 Compatible Materials. Materials of construction on the oxygen side of the oxygen concentrator unit shall comply with Section 1307.4. [NFPA 99:5.1.3.5.11.4] 1309.5 Oxygen Concentrator Components. The components that make up the oxygen concentrator unit shall be as follows: (1) The manufacturer of the concentrator unit shall be permitted to use such components and arrangement of such components as needed to produce oxygen complying w ith Section 1309.1 in the quantity as required by the facility, except where otherwise specifically defined in this code. (2) Air receivers and oxygen accumulators, where used, shall comply with Section Vlll, “Unfired Pressure Vessels, " of the ASML Boiler and Pressure Vessels Code and be provided with overpressure relief valves. [NFPA 99:5.1.3.5.11.5] 1309.6 Supply Air Quality. The supply air to the concentrators shall be of a quality to ensure the oxygen concentrator unit can produce oxygen complying w ith Section 1309T and shall not be subject to normally anticipated contamination (c.g., vehicle or other exhausts, gas leakage, discharge from vents, flooding, and so forth),[NFPA 99:5.1.3.5.11.6] 1309.7 Electrical Components.The oxygen concentrator supply unit and any associated electrical equipment shall be provided, a minimum, with the following electrical components: 2021 UNIFORM PLUMBING CODE 223
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS (2) The monitor shall continuously display the oxygen concentration and shall activate local alarm and master alarms per NFPA 99 when a concentration lower than 91 percent is observed . (3) The monitor shall continuously display the oxygen concentration. (4) It shall he permitted to insert the monitor into the pipeline without a demand check. [N 1 PA 99:5,13,5,1 M3] (4) Intake filter-muffler(s) of the dry type. (5) Pressure relief valve(s) set at 50 percent above line pressure. (6) Piping and components between the compressor and the source shutoff valve that do not contribute to contaminant levels. (7) Except as defined in Section 1310.3,2(1) through I Section 1310.3.2(6), materials and devices used| between the medical air intake and the medical air source valve that arc of any design or construction appropriate for the service as determined by the manufacturer.[NFPA 99:5,1.3.6.3.2 (2-7)] 1310.4 Medical Air Receivers. Receivers for medical air shall meet the following requirements: (1) They shall be made of corrosion-resistant materials or otherwise be made corrosion resistant. (2) They shall comply with Section VIII, ^Unfircd Pressure Vessels/ ’of the ASME Boiler and Pressure Vessel Code.| (3) They shall be equipped with a pressure relief valve, automatic drain, manual drain, sight glass, and pressure indicator. (4) They shall be of a capacity sufficient to prevent the compressors from short-cycling. [NFPA 99:5.1.3.6.3.6] 1310.5 Valves. A medical air receiver(s) shall be provided with proper valves to allow the flow of compressed air to enter and exit out of separate receiver ports during normal operation and allow the receiver to be bypassed during service without shutting down the supply of medical air. [NFPA 99:5.1.3.6.3.9(0)] »|1310.0 Category 1 Medical Air Central Supply Systems. )) 1310.1 Quality of Medical Air. Medical ail’ shall be required to have the following characteristics: (1) It shall be supplied from cylinders, bulk containers, or medical air compressor sources, or it shall be reconstituted from oxygen USP and oil-free, dry nitrogen NF. (2) It shall meet the requirements of medical air USP. (3) It shall have no detectable liquid hydrocarbons. (4) It shall have less than 25 ppm gaseous hydrocarbons. (5) It shall have equal to or less than 1.686 x 10_ <1 pounds per cubic yard (1 mg/m3 ) of permanent particulates sized 1 micron or larger in the air at normal atmospheric pressure. [NFPA 99:5.1.3.6.1 ] 1310.2 Uses of Medical Air. Medical air sources shall be connected to the medical air distribution system only and shall be used only for air in the application of human respiration and calibration of medical devices for respiratory application. [NFPA 99:5.1.3.6. 2] )) 1310.3 Medical Air Compressors. Medical air compressors shall be installed in a well-1 it, ventilated, and clean location and shall be accessible. The location shall be provided with drainage facilities in accordance with this code. The medical air compressor area shall be located separately from medical gas cylinder system sources, and shall be readily accessible for maintenance. 1310.3.1 Category 1 Medical Air Compressor. Medical air compressors shall he sufficient to serve the peak calculated demand with the largest single compressor out of service. In no ease shall there be fewer than two compressors. [NFPA 99:5.1.3.6.3.9(8)] 1310.3.2 Required Components. Medical air compressor systems shall consist of the following: ( 1 ) Components shall be arranged to allow sendee and a continuous supply of medical air in the event of a single fault failure. Component arrangement shall be permitted to vary as required by the tcchnology(ies) employed, provided that an equal level of operating redundancy and medical air quality is maintained. [ NFPA 99:5.1.3.6.3.9(A)(1), 5.13.6.3.9(A)(2)] (2) Automatic means to prevent backflow from all oneye1c compressorsthrough all off-eye Ic compressors. (3) Manual shutoff valve to isolate each compressor from the centrally piped system and from other compressors for maintenance or repair without loss of pressure in the system. I 1311.0 Compressor I Intake. 1311.1 Air Sources. Air sources lor medical air compressors shall comply with Section 1311.2 through Section I ^ 1311.6. I 1311.2 Medical Air Compressor Source. The medical (K air compressors shall draw their air from a source of clean air. [NFPA 99:5.1.3.6.3.11(A)] If an air source equal to or better than outside air (c.g., air already filtered for use in operating room ventilating systems) is available, it shall be permitted to be used for the medical air compressors with the following provisions: (1) This alternate source of supply air shall be available on a continuous 24 hours-per-day, 7 day-per-week basis. | (2) Ventilating systems having fans with motors or drive belts located in the airstream shall not be used as a source of medical air intake. [NFPA 99:5.1.3.6.3.11(E)] 1311.3 Air Intakes. Compressor intake piping shall he permitted to be made of materials and use a joining technique as ^ permitted under Section 1319.0 and Section 1320.0. [NFPA| 99:5.1.3.6.3.11(F)] 1311.4 Location. Medical air intakesshall be located asfol- (K lows: {1) The medical air intake shall be located a minimum of 25 feet (7620 mm) from ventilating system exhausts, fuel storage vents, combustion vents, plumbing vents, and » » l 224 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1312.3 Vacuum Receivers. Receivers tor vacuum shall meet the following requirements: ^ (1) They shall be made of materials deemed suitable by the manufacturer (2) They shall comply with Section VIII, “Unfired Pressure Vessels, '* of the ASME Boiler and Pressure Vessel Code. (3) They shall be capable of withstanding a gauge pressure of 60 psi {414 kPa) and 30 inch (762 mm) gauge HgV. (4) They shall be equipped with a manual drain. (5) They shall be of a capacity based on the technology of the pumps. [NPPA 99:5.1.3.7.3] 1312.4 Vacuum Filtration. Central supply systemsfor vacuum shall be provided with inlet filtration with the following characteristics: (1) Filtration shall be at least duplex to allow one filter to be exchanged without impairing vacuum system. (2) Filtration shall be located on the patient side of the vacuum producer. (3) Filters shall be efficient to 0.03 p and 99.97 percent HEPA or better, per DOE-STD-3020. (4) Filtration shall be sized for 100 percent of the peak calculated demand while one filter or filter bundle is isolated. (5) It shall be permitted to group multiple filters into bundles to achieve the required capacities. (6) The system shall be provided with isolation valves on the source side of each filter or filter bundle and isolation valves on the patient side of each filter or filter bundle, permitting the filters to be isolated without shutting off flow to the central supply system. (7) A means shall be available to allow the user to observe any accumulations of liquids. (8) A vacuum relief pctcock shall be provided to allow vacuum to be relieved in the filter canister during filter replacement. (9) Filter elements and canisters shall be permitted to be constructed of materials as deemed suitable by the manufacturer. (10) In normal operation, one filter or filter bundle shall be isolated from the system to be available for sendee should a blockage in the operating filter occur or rotation of the filters be desired after filter element exchange. [NFPA 99:5.1.3.7.4] 1312.5 Piping Arrangement and Redundancies. Piping arrangement shall be as follows: (1) Piping shall be arranged to allow sendee and a continuous supply of medical-surgical vacuum in the event of a single fault failure. (2) Piping arrangement shall be permitted to vary based on the technology(ics) employed, provided that an equal level of operating redundancy is maintained. (3) Where only one set of vacuum pumps is available for a combined medical-surgical vacuum system and an analysis, a research, or a teaching laboratory vacuum system, vacuum discharges, or areas that can collect vehicular exhausts or other noxious fumes. (2) The medical air intake shall be located a minimum of 20 feet (6096 mm) above ground level. (3) The medical air intake shall be located a minimum of 10 feet (3048 mm) from any door, window, or other opening in the building. [NJ PA 99:5.1.3.6.3.11(B-D)] )) 1311.5 Separate Compressors. Air intakes for separate compressors shall be permitted to be joined together to one common intake where the following conditions arc met: ( 1 ) The common intake is sized to minimize backpressure in accordance with the manufacturer' s recommendations. (2) Each compressor can be isolated by manual or check valve, blind flange, or tube cap to prevent open inlet piping when the comprcssor(s) is removed for service from the consequent backflow of room air into the other compressor^ ). [NFPA 99:5.1 .3.6.3.11(G)] )) 1311.6 Screening. The end of the intake shall be turned down and screened or otherwise be protected against the entry of vermin, debris, or precipitation by screening fabricated or composed of a noncorroding material . [ NFPA 99:5.1.3.6.3.11(H)] ))11312.0 Medical Surgical Vacuum Central Supply SysI terns. 1312.1 General. The vacuum plant shall be installed in a well-lit, ventilated, and clean location with accessibility. The location shall be provided with drainage facilities in accordance with this code.The vacuum plant, where installed as a source, shall be located separately from other medical vacuum system sources and shall be readily accessible for maintenance, » 1312.2 Medical-Surgical Vacuum Sources. McdicalI surgical vacuum central supply systems shall consist of the following: (1) Two or more vacuum pumps sufficient to serve the peak calculated demand with the largest single vacuum pump out of service. (2) Automatic means to prevent backflow from any on-eyeIc vacuum pumps through any off-cycle vacuum pumps. (3) Shutoff valve or other isolation means to isolate each vacuum pump from the centrally piped system, and other vacuum pumps for maintenance or repair without loss of vacuum in the system. (4) Vacuum receiver. (5) Piping between the vacuum pump(s), dischargc(s), receivers), and vacuum source shutoff valve in accordance with Section 1319.0, except brass, galvanized, or black steel pipe, which is permitted to be used as recommended by the manufacturer. (6) Except as defined in Section 1312.2( 1 ) through Section 1312.2(5), materials and devices used between the medical vacuum exhaust and the medical vacuum source that arc permitted to be of any design or construction appropriate for the service as determined by the manufacturer. (7) Vacuum filtration per Section 1312.4. [ NFPA 99:5.1.3.7.1.1] 2021 UNIFORM PLUMBING CODE 225
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1314.2 Security. All valves, except valves in zone valve box assemblies, shall be secured by any of the following means: (1) Located in secured areas. (2) Locked or latched in their operating position. (3) Located above ceilings, but remaining accessible and not obstructed. [NFPA 99:5.1.4.1. 2] 1314.3 Labeled. All valves shall be labeled as to gas supplied and the arca(s) controlled, in accordance with Section 1323.14. [NFPA 99:5.1.4.1.3] 1314.4 Accessibility. Zone valves shall be installed in valve boxes with removable covers large enough to allow manual operation of valves. Zone valves for use in certain areas, such as psychiatric or pediatric areas, shall be permitted to be secured with the approval of the Authority Having Jurisdiction to prevent inappropriate access. [NFPA 99:5.1.4.1.4] 1314.4.1 Flammable Gases. Valves for nonflamma- 1 blc medical gases shall not be installed with valves for flammable gases in the same zone valve box assembly with flammable gases. [NFPA 99:5.1.4.1.5] 1314.5 Valve Types. New or replacement valves shall be permitted to be of any type as long as they meet the following conditions: (1) They have a minimum Cv factor in accordance with Table 1314.5. (2) They use a quarter turn to off. (3) They are constructed of materialssuitable for the service. (4) They are provided with copper tube extensions by the manufacturer for brazing or with corrugated medical tubing (CMT) fittings. (5 ) They indicate to the operator if the valve is open or closed. (6) They permit in-line serviceability. (7) They are cleaned for oxygen service by the manufacturer if used for any positive-pressure service. [NFPA 99:5.1.4.1.6] such laboratories shall be connected separately from the medical-surgical system directly to the receiver tank through its own isolation valve and fluid trap located at the receiver, and between the isolation valve and fluid trap, a scrubber shall be permitted to be installed. [NFPA 99:5.1.3.7.5, 5.1.3.7.5.1] 1312.6 Piping Serviceability. The medical-surgical vacuum rcccivcr(s) shall be serviceable without shutting down the medical-surgical vacuum system by any method to ensure continuation of service to the facility’s medical-surgical pipeline distribution system. [NFPA 99:5.1.3.7.5.2] 1312.7 Shutoff Valve. Medical-surgical vacuum central supply systems shall be provided with a source shutoff valve per Section 1314.6. [NFPA 99:5.1.3.7.5.3] I 11313.0 Medical-Surgical Vacuum Exhaust. 1313.1 Vacuum Source Exhausts. The medical surgical vacuum pumps shall exhaust in a manner and location that minimizes the hazards of noise and contamination to the facility and its environment. [NFPA 99:5.1.3.7.7.1] )) 1313.2 Location. The exhaust shall be located as follows: ( 1 ) Outdoors. (2) At least 25 feet (7620 mm) from any door, window, air intake, or other openings in buildings or places of public assembly. (3) At a level ditferent from air intakes. (4) Where prevailing winds, adjacent buildings, topography, or other influences will not divert the exhaust into occupied areas or prevent dispersion of the exhaust. [NFPA 99: 5.1.3.7.7.2] )) 1313.3 Screening. The end of the exhaust shall be turned down and screened or otherwise be protected against the entry of vermin, debris, or precipitation by screening fabricated or composed of a noncorroding material. [Nl' PA 99:5.1.3.7.7.3] )) 1313.4 Dips and Loops. The exhaust shall be free of dips and loops that might trap condensate or oil or provided with a drip leg and valvcd drain at the bottom of the low point. [NFPA 99:5.1.3.7.7.4] 1313.5 Multiple Pumps. Vacuum exhausts from multiple pumps shall be permitted to be joined together to one common exhaust where the following conditions arc met: ( 1 ) The common exhaust is sized to minimize backpressure in accordance with the pump manufacturer’ s recommendations. (2) Each pump can be isolated by manual or check valve, blind flange, or tube cap to prevent open exhaust piping when the pump(s) is removed for service from consequent flow of exhaust air into the room. [NFPA 99:5.1.3.7.7.5] TABLE 1314.5 POSITIVE PRESSURE GASES [NFPA 99:5.14.1.6(a)] VALVE SIZE (inch) MINIMUM Cv (full open) Vi I 7 V* 3 I I 60 V A 110 VA 169 » 1314.0 Valves. 1314.1 Gas and Vacuum Shutoff Valves. Shutoff valves shall be provided to isolate sections or portions of the piped distribution system for maintenance, repair, or planned future expansion need and to facilitate periodic testing. [ NFPA 99:5.1.4.1. 1] 2 357 Vh 390 3 912 4 1837 For SI units: 1 inch - 25.4 mm 226 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS )) 1314.6 Source Valves. A shutoff valve shall be placed at the immediate connection of each centralsupply system to the piped distribution system to allow the entire central supply system, including all accessory devices(e.g., air dryers, final line regulators), to be isolated from the facility. [NFPA 99:5.1.4.2. 1J 1314.6.1 Location. The source valve shall be located in the immediate vicinity of the central supply system. [NFPA 99:5,1.4,2,2] )) 1314.7 Main LineValve. A shutoff valve shall be provided in the main supply line inside of the buildings being served, except where one or more of the following conditions exist: ( 1 ) The source and source valve arc located inside the building served. (2) The source system is physically mounted to the wall of the building served, and the pipeline enters the building in the immediate vicinity of the source valve. [ NFPA 99:5.1.4.3. 1 ] 1314.7.1 Location. The main line valve shall be located on the facility side of the source valve and outside of the source room, the enclosure, or where the main line first enters the building. [ NFPA 99:5.1.4.3. 2J )) 1314.8 Riser Valves. Each riser supplied from the main line shall be provided with a shutoff valve in the riser adjacent to the main line. [NFPA 99:5.1.4.4] )) 1314.9 Service Valves. Service valvesshall be installed to allow servicing or modification of lateral branch piping from a main or riser without shutting down the entire main, riser, or facility. [NFPA 99:5.1.4.5.1] 1314.9.1 Branch Piping. Only one service valve shall be required for each branch off of a riser, regardless of how many zone valve boxes arc installed on that lateral. Sendee valves shall be placed in the branch piping prior to any zone valve box assembly on that branch. [NFPA 99:5.1.4 5.2, 5.1.4.5.3] )) 1314.10 Zone Valves. All station outlets- inlets shall be supplied through a zone valve, which shall be placed asfollows: ( 1 ) It is installed so that a wall intervenes between the valve and the outlets/inlets that it controls. (2) It is readily operable from a standing position. (3) It is installed where it is visible and accessible at all times. (4) It is not installed where it can be hidden from plain view, such as behind normally open or normally closed doors. (5) It is not installed in a room with the station outlets/inlets that it controls. (6) It is not installed in rooms, areas, or closets that can be closed or locked. [NFPA 99:5.1.4.6. 1] 1314.10.1 Readily Accessible. A zone valve in each medical gas or vacuum line shall be provided for each Category l space and anesthetizing location for moderate sedation, deep sedation, or general anesthesia specific for the occupancy. These zone valvesshall be located as follows: (1) They arc installed immediately outside the area controlled . (2) They arc readily accessible in an emergency. [NFPA 99:5.1.4.6.2] 1314.10.2 Arrangement. Piping on the patient side of zone valves shall be arranged to provide the following: (1) Shutting off the supply of medical gas or vacuum to one zone will not affect the supply of medical gas or vacuum to another zone or the rest of the system. (2) Service will only be to outlets/inlets located on that same story. (3) All gas delivery columns, hose reels, ceiling tracks, control panels, pendants, booms, or other special installations arc located on the patient side of the zone valve. [NFPA 99:5.1.4.6.3] 1314.10.3 Indicators. A press ure/vacuum indicator shall be provided on the station oullet/inlct side of each zone valve. [NFPA 99:5.1.4.6.4] 1314.11 'n-Lfne Shutoff Valves. Optional in-line valves shall be permitted to be installed to isolate or shut off piping ^ forservicing of individual rooms or areas. [NFPA 99:5.1.4.7] 1314.12 Valves for Future Connections. Future con- « ncction valves shall be labeled as to gas content. [NFPA 99:5.1.4.8.1] 1314.12.1 Downstream Piping. Downstream piping shall be closed with a brazed cap with tubing allowance ^ for cutting and rebrazing. [NFPA 99:5.1.4.8.2] » I » 1315.0 Station Outlets and Inlets. 1315.1 General. Each station outlet/inlct for medical gases or vacuums shall be gas-specific, whether the outlet/inlct is ^ threaded or is a nonintcrchangeable quick coupler. [NFPA 99:5.1.5.1] 1315.2 Required Valves. Each station outlet shall consist (X of a primary and a secondary valve (or assembly). Each station inlet shall consist of a primary valve (or assembly ) and shall be permitted to include a secondary' valve (or assembly). [NFPA 99:5.1.5.2, 5.1.5.3] 1315.3 Secondary Valve, i nc secondary valve (or assembly) shall close automatically to stop the flow of gas (or vacuum, if provided) when the primary valve (or assembly) is removed. [NFPA 99:5.1.5.4] 1315.4 Identification. Each outlet/inlct shall be legibly identified in accordance with Section 1323.15.[NFPA 99:5.1.5.5] 1315.5 Threaded Outlets/Fittings. oullcts/inlcts shall be nonintcrchangeable connections complying with the mandatory requirements ofCGA V-5. [NFPA 99:5.1.5.6] 1315.6 Gas-Specific Station Outlet/lnlet. Each station oullet/inlct, including those mounted in columns, hose reels, ceiling tracks, or otherspecial installations, shall be designed so that parts or components that arc required to be gas-specific for compliance with Section 1315.1 and Section 1315.8 cannot be interchanged between the station outlet/inlct for different gases. [NFPA 99:5.1.5.7] 1315.7 Common Parts. The use of common parts in outlets/inlcts,such assprings, O-rings, fasteners, seals, and shutoff poppets, shall be permitted. [NFPA 99:5.1.5.8] « » Threaded 2021 UNIFORM PLUMBING CODE 227
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1315.8 Marking of Components. Components of a vacuum station inlet necessary for the maintenance of vacuum specificity shall be legibly marked to identify them as components or parts of a vacuum or suction system. [ NFPA 99:5.1.5.9] 1315.9 Components Not Specific to a Vacuum. Components of inlets not specific to a vacuum shall not be required to be marked . [NFPA 99:5 . L5.10] 1315.10 Factory-Installed Copper InletTubes. Factoiyinstailed copper inlet tubes on station outlets extending no further than 8 inches (203 mm) from the body of the terminal shall be not less than DN8 (NPS ' A) ( 3 /s inch O.D.) size, with 0.3 inch (7.6 mm) minimum inside diameter. [ Nl’PA 99:5.1.5.11] 1315.11 Factory-Installed Copper Outlet Tubes. Factory-installed copper outlet tubes on station inlets extending no further than 8 inches (203 mm) from the body of the terminal shall be not less than DN10 (NPS Vs) ( l /z in. O.D.)size, with 0.4 inch (10.2 mm) minimum inside diameter. [NFPA 99:5.1.5.12] 1315.12 Protection from Damage. Station outlets/inlets shall be permitted to be recessed or otherwise protected from damage. [NFPA 99:5.1.5.13] 1315.13 Multiple Wall Outlets/Inlets. When multiple wall outlets inlets arc installed, they shall be spaced to alkyw the simultaneous use of adjacent outlcts/inlets with any of the various types of therapy equipment. [N! ' PA 99:5.1.5.14] 1315.14 Nonstandard Operation Pressures. Station outlets in systems having nonstandard operating pressures shall meet the following additional requirements: ( 1 ) They shall be gas-specific. (2) They shall be pressure-specific where a single gas is piped at more than one operating pressure [e.g.. a station outlet for oxygen at 80 psi (552 kPa) shall not accept an adapter for oxygen at 50 psi (345 kPa}]. (3) If operated at a pressure in excess of 80 psi ( 552 kPa ), they shall be either D.l.S.S. connectors or comply with Section 1315.14(4). (4) If operated at a gauge pressure between 200 psi and 300 psi (1379 kPa and 2068 kPa), the station outlet shall be designed so as to prevent the removal of the adapter until the pressure has been relieved to prevent the adapter injuring the user or others when removed from the outlet. [NFPA 99:5.1.5.15] )) 1315.15 Post Installation. After installation of the piping, but before installation of the station outlets and inlets and other medical gas and medical gas system components (e.g., pressure-actuating switches for alarms, manifolds, pressure gauges, or pressure relief valves), the line shall be blown clear using oil-free, dry nitrogen NF. ing position. Prcssurc/vacuum indicators shall be provided at the following locations, as a minimum: Adjacent to the alarm-initiating device for source main line pressure and vacuum alarms in the master alarm system. (2) At or in area alarm panels to indicate the pressure/vacuum at the alarm activating device for each system that is monitored by the panel. (3) On the station outlct/inlct side of zone valves. [NFPA 99:5.1.8.2.1, 5.1.8.2.2] ( 1) 1317.0 Warning Systems. 1317.1 Category 1. All master, area, and local alarm systems used for medical gas and vacuum systems shall include the following: Separate visual indicators for each condition monitored, except as permitted in Section 1317.1.2 for local alarms| that are displayed on master alarm panels. (2) Visual indicators that remain in alarm until the situation that has caused the alarm is resolved. (3) Cancelable audible indication of each alarm condition that produces a sound with a minimum level of 80 decibels at 3 feet (914 mm). (4) Meansto indicate a lamp or LED failure and audible failure. (5) Visual and audible indication that the communication wdth an alarm-initiating device is disconnected. Labeling of each indicator, indicating the condition monitored . (7) Labeling of each alarm panel for its area of survcillance. (8) Reinitiation of the audible signal if another alarm condition occurs while the audible alarm is silenced. (9) Power for master, area alarms, sensors, and switches from the life safety branch of the essential electrical system as described in NFPA 99. (10)Power for local alarms, dew point sensors, and carbon monoxide sensors permitted to be from the same essential electrical branch as is used to power the air compressor system. (11) Where used for communications, wiring from switches or sensors that is supervised or protected as required by NFPA 70 for life safety and critical branches circuits in| which protection is any of the following types: (a) Conduit (b) Free air (c) Wire (d) Cable tray (c) Raceways (12)Communication devicesthat do not use electrical wiring for signal transmission will be supervised such that failure of communication shall initiate an alarm. (13) Assurance by the responsible authority' of the facility that the labeling of alarms, where room numbers or designations arc used, is accurate and up-to-date. ( 1) (6) | 1316.0 Pressure and Vacuum Indicator Locations. \\1316.1 Isolation. A pressure-relief valve shall not be isolated from its intended use by a valve. 1316.2 Pressure and Vacuum Indicator Locations. Pressure/vacuum indicators shall be readable from a stand228 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS (14) Provisions for automatic restart after a power loss of 10 seconds (c.g., during generator startup) without giving false signals or requiring manual reset. (15) Alarm switches/sensors installed so as to be removable. [NFPA 99:5.1.9.1] 13171.1 Master Alarms. A master alarm system shall be provided to monitor the operation and condition of the source of supply, the reserve source (if any), and the pressure in the main lines of each medical gas and vacuum piping system. [NT' PA 99:5.1.9.2] 1317.1.2 Master Alarm Signal. The master alarm shall include at least one signal from the source equipment to indicate a problem with the source equipment at this location. This master alarm signal shall activate when any of the required local alarm signals for this source equipment activates. [NFPA 99:5.1.9.5.2] (1) Hard-drawn seamless copper tube in accordance with the following: (a) ASTM B88, copper tube (Type K, Type L, or Type M) (b) ASTM B280, copper ACR tube (c) ASTM B819, copper medical gas tubing (Type Kor Type L) (2) Stainless steel tube in accordance with the following: (a) ASTM A269 TP304L or 316L (b) ASTM A312 TP304L or 316L (c) ASTM A312 TP 304L/316L, Schedule 5S pipe, and ASTM A403 WP304L/316L, Schedule 5S fittings {NFPA 99:5.1.10.2.1} 1319.1.1Where Not Required. If medical gastube in accordance with ASTM B819, Standard Specification for Seamless Copper Tube for Medical Gas Systems, is used for vacuum piping, such special marking shall not be required. [NFPA 99:5.1.10.2.2.2] » »11318.0 Piping Materials lor I Pressure Medical Gas Systems. y} 1318.1 General. The provisions of this section shall apply I to field-installed piping for the distribution of medical gas I systems, yy 1318.2 Cleaning. Tubes, valves,fittings, station outlets, and other piping components in medical gas systems shall have been cleaned for oxygen service by the manufacturer prior to installation in accordance with the mandatory requirements of CGA G-4.1, except that fittings shall be permitted to be cleaned by a supplier or agency other than the manufacturer. [NFPA 99:5.1. 10.1. 1] Where tube ends, fittings or other components become contaminated before installation they shall be reclcancd in I accordance with Section 1321.8.7 and Section 1321.8.8. yy 1318.3 Delivery. Each length of tube shall be delivered plugged or capped by the manufacturer and kept sealed until prepared for installation. Fittings, valves, and other components |shall be delivered sealed and labeled and kept sealed until prepared for installation.[NFPA 99:5.1.10.1.2, 5,1TO,13] » 1318.4Tubes for Medical Gas Systems. Tubes shall be |hard-drawn seamless copper in accordance with ASTM B819, medical gas tube, Type L, except Type K.shall be used where operating pressures arc above a gauge pressure of 185 psi (1276 kPa) and the pipe sizes arc larger than DN80 [( NPS 13) (3' /s inches O. D.)]. {NFPA 99:5.1.10.1.4} 11318.5 Manufacturer Markings. ASTM B819, medical gas tube shall be identified by the manufacturer' s markings LiOXYf' ^MED "OXY/MED, ” "OXY/ACR, " or"ACR/MED^ in blue (Type L) or green (Type K). [NFPA 99:5.1.10.1. 7] ^ 11318.6 Documentation. The installer shall furnish documentation certifying that all installed piping materials comply I with the requirements of Section 1318.2. [NFPA 99:5.1.10.1 .8] Field-Installed Positive 1320.0 Joints and Connections. « 1320.1 General. This section sets forth the requirementsfor pipe joint installations for a medical gas or vacuum system. ^ 1320.2 Changes in Direction. Positive pressure patient gas systems, medical support gas systems, and vacuum systems constructed of hard-draw n seamless copper or stainless I steel tubing shall have all turns, offsets, and other changes in I direction made using fittings or techniques appropriate to any of the following acceptable joining methods: (1) Brazing, as described in Section 1321.0. ( 2) Welding, as described in Section 1322.1 through Section 1322.2.1. (3) Memory metal fittings, as described in Section 1322.3. (4) Axially swaged, elastic preload fittings, as described in Section 1322.4. (5) Threaded, as described in Section 1322.5. [NFPA 99:5.1. 10.3.1] 1320.2.1 Medical Vacuum Systems. Vacuum sys- « terns fabricated from copper tubing shall be permitted to| have branch connections made using mechanically formed, drilled, and extruded tee-branch connectionsthat arc formed in accordance with the tool manufacturer ' s instructions. Such branch connectionsshall be joined by brazing, as described in Section I 32 F0. [NFPA| 99:5.1. 10.3.3] 1321.0 Brazed Joints. 1321.1 Brazed Joints and Fittings. Fittings shall be wrought*copper capillary fittings complying with ASME B16.22, or brazed fittings complying with ASME B16.50. Cast copper alloy fittings shall not be permitted. Brazed joints shall be made using a brazing alloy that exhibits a melting temperature in excess of 1000°F (538^C) to retain the integrity of the piping system in the event of fire exposure. [NFPA 99:5.1.10A1.1 -5.U0AU] i 1319.0 Piping Materials for Field-Installed MedicalSurgical Vacuum Systems. )) 1319.1Tubes for Medical Vacuum Systems. Piping for vacuum systemsshall be constructed of any of the following: 2021 UNIFORM PLUMBING CODE 229
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS yy 13212 Tube Joints. Brazed tube joints shall be the socket type. [NFPA 99:5.1.10.4.1.4] )) 1321.3 Filler Metals. Filler metals shall bond with and be metallurgically compatible with the base metals being joined . I iller metals shall comply with AWS A5.8. [ NFPA 99:5.1.10.4.1.5, 5.1.10.4.1.6] yy 1321.4 Copper-to-Copper Joints. Copper-to-coppcr joints shall be brazed using a copper-phosphorus or copperphosphorus-silver brazing tiller metal (BCuP series) without flux. [NFPA 99:5.1.10.4.1.7] yy 1321.5 Accessible. Joints to be brazed in place shall be accessible for necessary preparation, assembly, heating, filler application, cooling, cleaning, and inspection. [ NFPA 99:5.1.10.4.1.9] 1321.6 Purging. Braze joints shall be continuously purged with nitrogen NF. [NFPA 99:5.1. 10.4.110] yy 1321.7 Tube Ends. Tube ends shall be cut square using a sharp tubing cutter to avoid deforming the tube. [NFPA 99:5.1.10.4.2.1] 1321.7.1 Cutting Wheels. The cutting wheels on tubing cutters shall be free from grease, oil, or other lubricant not suitable for oxygen service. [ NFPA 99:5.1.10.4.2.2] 1321.7.2 Cut Ends. The cut ends of the tube shall be permitted to be rolled smooth or deburred with a sharp, clean deburring tool, taking care to prevent chips from entering the tube. [NFPA 99:5.1.10.4.2.3] yy 1321.8 Cleaning Procedures. The interior surfaces of tubes, fittings, and other components that are cleaned for oxygen service shall be stored and handled to avoid contamination prior to assembly and brazing. [NFPA 99:5.1.10.4.3.1] 1321.8.1 Exterior Surfaces. The exterior surfaces of tube endsshall be cleaned prior to brazing to remove any surface oxides. When cleaning the exterior surfaces of tube ends, no matter shall be allowed to enter the tube. [NFPA 99:5.1. 10.4.3.2, 5.1. 10.4.3.3] 1321.8.2 Interior Surfaces. If the interior surfaces of fitting sockets become contaminated prior to brazing, they shall be rcclcancd for oxygen in accordance with Section 1321.8.7 and be cleaned for brazing with a clean, oil-tree, stainlesssteel or brass wire brush . [NFPA 99:5.1. 10.4.3.4] 1321.8.3 Abrasive Pads. Clean, nonshedding, abrasive pads shall be used to clean the exterior surfaces of the tube ends. [NFPA 99:5.1.10.4.3.5] 1321.8.4 Prohibited. The use of steel wool or sand cloth shall be prohibited. The cleaning process shall not result in grooving of the surfaces to be joined. [NFPA 99:5.1.10.4.3.6, 5.1.10.4.3.7] 1321.8.5 Wiped. After being abraded, the surfacesshall be wiped using a clean, lint-free white cloth. [ NFPA 99:5.1.10.4.3.8] 1321.8.6 Examination. Tubes, fittings, valves, and other components shall be visually examined internally before being joined to verify that they have not become contaminated for oxygen service and that they arc tree of obstructions or debris. [NFPA 99:5.1. 10.4.3.9] 1321.8.7 On-Site Recleaning. The interior surfaces of tube ends, fittings, and other components that were cleaned for oxygen service by the manufacturer, but that became contaminated prior to being installed, shall be permitted to be rcclcancd on-site by the installer by thoroughly scrubbing the interior surfaces with a clean, hot water-alkaline solution, such as sodium carbonate or trisodium phosphate, using a solution of l pound (0.5 kg) of sodium carbonate or trisodium phosphate to 3 gallons (11 L) of potable water, and thoroughly rinsing them with clean, hot, potable water. Other aqueous cleaning solutions shall be permitted to be used for on-site rcclcaning provided that they arc as recommended in the mandatory requirementsof CGA G4.1. [NFPA 99:5.1.10.4.3.10, 5.1.10.4.3.1 1] 1321.8.8 Contaminated Materials. Material that has <X become contaminated internally and is not clean for oxygen shall not be installed. [NFPA 99:5.1.10.4.3.12] 1321.8.9 Timelrame lor Brazing. Joints shall be « brazed within 8 hours after the surfaces are cleaned for service » brazing. [NFPA 99:5.1.10.4.3.13] 1321.9 Brazing Dissimilar Metals. Flux shall only be <X used when brazing dissimilar metals, such as copper and bronze or brass, using a silver (BAg series) brazing filler metal.[NFPA 99:5.1. 10.4.4.1] 1321.9.1 Surface Cleaning. Surfaces shall be cleaned for brazing in accordance with Section 1321.8. [ NFPA 99:5.1.10.4.4.2] 1321.9.2 Flux. Flux shall be applied sparingly to minimizc contamination of the inside of the tube with flux. ^ The flux shall be applied and worked over the cleaned surfaces to be brazed using a stiff bristle brush to ensure complete coverage and wetting of the surfaces with flux. [NFPA 99:5.1.10.4.4.3, 5.1.10.4.4.4] 1321.9.3 Short Sections of Copper. Where possi- « ble, short sections of copper tube shall be brazed onto the non-copper component, and the interior of the subassembly shall be cleaned of flux prior to installation in the piping system. [NFPA 99:5.1. 10.4.4.5] 1321.9.4 Flux-Coated Brazing Rods. On joints DN20 (NPS 3A) (7 /a inch O. D.) size and smaller, fluxcoated brazing rods shall be permitted to be used in lieu of applying flux to the surfaces being joined. [NFPA 99:5.1. 10.4.4.6] 1321.10 Nitrogen Purge. When brazing, joints shall be continuously purged with oil-free, dry nitrogen NF to prevent the formation of copper oxide on the inside surfaces of the joint.[NFPA 99:5.1.10.4.5.1] 1321.10.1 Source. The source of the purge gas shall be monitored, and the installer shall be audibly alerted ^ when the source content is low. [NFPA 99:5.1. 10.4.5.2] 1321.10.2 Flow Rate Control. The purge gas flow rate shall be controlled by the use of a pressure regulator and ^ flowmeter, or combination thereof. » » » » » » » 230 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1321.12.1 Where Flux Is Used. Where flux has been {{ used, the wash water shall be hot. [NFPA 99:5,1.10,4,7,2] 1321.12.2Visually Inspected. Each brazed joint shall 4X be visually inspected after cleaning the outside surfaces. [NFPA 99:5.1.10.4.7.3] 1321.12.3 Prohibited Brazed Joints. Joints exhibit-« ing the following conditions shall not be permitted: (1) Flux or flux residue (when flux or flux-coated BAg series rods are used with dissimilar metals). (2) Base metal melting or erosion. (3) Unmelted filler metal. (4) Failure of the filler metal to be clearly visible all the way around the joint at the interface between the socket and the tube. (5) Cracks in the tube or component f 6) Cracks in the braze fiHer metaI. (7) Failure of the joint to hold the test pressure under the installer-performed initial pressure test (see Section 1324.5 through Section 1324.5.1.2) and standing pres- I sure test (sec Section 1324.5.4 or Section 1324.5.5). | [NFPA 99:5.1. 10.4.7.4] 1321.12.4 Defective Brazed Joints. Brazed joints <X that arc identified as defective under the conditions of Section 1321.12.3(2) or Section 1321.12.3(5) shall be| replaced. [NFPA 99:5.1.10.4.7.5] Brazed jointsthat arc identified as defective under the conditions of Section 1321.12.3(1),Section 1321.12.3(3). Section 1321.12.3(4), Section 1321.12.3(6) or Section 1321.12.3(7) shall be permitted to be repaired, except that no joint shall be reheated more than once before being replaced. [NFPA 99:5.1.10.4.7.6] Pressure regulators alone shall not be used to control purge gas flow rates. [NFPA 99:5.1.10.4.5.3, 5.1.10.4.5.4] 1321.10.3 Oxygen Analyzer. In order to ensure that all ambient air has been removed from the pipeline prior to brazing, an oxygen analyzer shall be used to verify the effectiveness of the purge. The oxygen analyzer shall read below 1 percent oxygen concentration before brazing begins. [NFPA 99:5.1. 10.4.5.5] 1321.10.4 During Installation. During and after installation, openings in the piping system shall be kept sealed to maintain a nitrogen atmosphere within the piping to prevent debris or other contaminants from entering the system.[NFPA 99:5,1.10.4.5,6] 1321.10.5 Discharge Opening. While a joint is being brazed, a discharge opening shall be provided on the opposite side of the joint from where the purge gas is being introduced. [NFPA 99:5.1. 10.4.5.7] 1321.10.6 Temperature of Joint. The flow of purge gasshall be maintained until the joint is cool to the touch. [NFPA 99:5.1. 10.4.5.8] 1321.10.7 Opening to Be Sealed. After the joint has cooled, the purge discharge opening shall be sealed to prevent contamination of the inside of the tube and maintain the nitrogen atmosphere within the piping system. [NFPA 99:5.1. 10.4.5.9] 1321.10.8 Final Brazed Connection. The final brazed connection of new piping to an existing pipeline containing the system gas shall be permitted to be made without the use of a nitrogen purge. [ NFPA 99:5.1.10.4.5.10] 1321.10.9 Final Tie-In Test. After a final brazed connection in a positive pressure medical gas pipeline is made without a nitrogen purge, an outlet in the immediate downstream zone of the affected portion(s) of both the new and existing piping shall be tested in accordance with the final tie-in test in Section 1324.5.9 through Section 1324.5.9.4. [NFPA 99:5.1. 10.4.5.11] 1321.10.10 Autogenous Orbital Welding Process. When using the autogenous orbital welding process, joints shall be continuously purged inside and outside with inert gas(cs) in accordance with the qualified welding procedure. [NFPA 99:5.1.10.4.5.12] » 1321.11 Assembling and Heating Brazed Joints. Tube ends shall be inserted into the socket, cither fully or to a mechanically limited depth that is not less than the minimum cup depth (overlap) specified by ASME BI 6.50. [ NFPA 99:5.1.10.4.6.1] 1321.11.1 Heating Of Joint. Where flux is permitted, the joint shall be heated slowly until the flux has liquefied. After flux is liquefied, or where flux is not permitted to be used, the joint shall be heated quickly to the brazing temperature, taking care not to overheat the joint. [NFPA 99:54 . 10.4.6.2, 54.10.4.6.3] )> 1321.12 Inspection ol Brazed Joints. Afterbrazing, the outside of all joints shall be cleaned by washing with water and a wire brush to remove any residue and allow clear visual inspection of the joint. [N1 PA 99:5.1. 10.4.7,1] » » » » » » » 1322.0 Welded Joints. 1322.1 Welded Joints Procedure. Welded joints for|« medical gas and medical-surgical vacuum systems shall be permitted to be made using a gas tungsten arc welding (GTAW) autogenous orbital procedure. [NFPA 99:5,1.10.5.1. 1] 1322.1.1 Welder Qualification Procedure. The « GTAW autogenous orbital procedure and the welder qualification procedure shall be qualified in accordance w ith Section IX of the ASME Boiler and Pressure Vessel Code. Welder qualification procedures shall include a bend test and a tensile test in accordance with Section IX of the ASME Boiler and Pressure Vessel Code on each tube size diameter, [NFPA 99:5.1 .10.5. 1.2, 5.1.10.5.1.3] 1322.1.2 Welding Procedure Specification. Each welder shall qualify to a welding procedure specification (WPS) for each tube diameter. [NFPA 99:5.1.10.5.1.4] 1322.1.3 Purging of Joints. GTAW autogenous « orbital welded joints shall be purged during welding with a commercially available mixture of 75 percent helium {-I-/- 5 percent) and 25 percent argon (+/- 5 percent). [NFPA 99:5.1.10.5.1.5] I i » » 2021 UNIFORM PLUMBING CODE 231
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1322.1.4 Shield Gas. The shield gas shall be as required in Section 1322,1.3, [NFPA 99:5.1.10.5.1.6] 1322.1.5Test Coupons. Test couponsshall be welded and inspected, as a minimum, at the start of work and every 4 hours thereafter, or when the machine is idle for more than 30 minutes, and at the end of the work period . Test coupons shall be inspected on the I.D. and O. D. by a qualified quality control inspector. Test coupons shall also be welded at change of operator, weld head, welding power supply, or gas source. [NFPA 99:5,1.10.5.1. 7 -5.1. 10.5.1.9] 1322.2 Welding for Stainless Tube. Stainless tube shall be welded using metal inert gas (MIG) welding, tungsten inert gas(TIG) welding, or other welding techniquessuited to joining stainless tube. [NFPA 99:5.1.10,5,2,1] 1322.2.1 Qualifications. Weldersshall be qualified to Section IX of the ASME Boiler and Pressure Vessel Code,[NFPA 99:5.1.10.5.2.2] yy 1322.3 Memory Metal Fittings. Memory metal fittings having a temperature rating not less than 1000°F (538aC) and a pressure rating not less than 300 psi (2068 kPa ) shall be permitted to be used to join copper or stainless steel tube. Memory metal fittings shall be installed by qualified technicians in accordance with the manufacturer's instructions. [NFPA 99:5.1.10.6.1 , 5.1.10.6.2] yy 1322.4 Axially Swaged Fittings. Axially swaged, elastic strain preload fittings providing metal-to-metal seals, having a temperature rating not less than 1000"F (538°C) and a pressure rating not less than 300 psi (2068 kPa), and that, when complete, are permanent and nonscparable shall be permitted to be used to join copper or stainless steel tube. Axially swaged, elastic strain preload fittings shall be installed by qualified technicians in accordance with the manufacturer' s instructions. [NFPA 99:5.1.10.7.1, 5.1.10.7.2] yy 1322.5Threaded Fittings. Threaded fittings shall meet the following criteria: (1) They shall be limited to connections for pressure and vacuum indicators, alarm devices. gas-$peciflc demand check fittings, and source equipment on the source side of the source valve. (2) They shall he tapered pipe threads complying with ASME Bl.20.1. (3) They shall be made up with polytetrafluoroethylcnc (PTFE) tape or other thread sealant recommended for oxygen service, with sealant applied to the male threads only and care taken to ensure sealant docs not enter the pipe. [NFPA 99:5.1.10.8] )) 1322.6 Other Types of Fittings. Listed or approved metallic gas tube fittings that, when made up, provide a permanent joint having the mechanical, thermal, and scaling integrity of a brazed joint shall be permitted to be used . [ NFPA 99:5.1 10 9 1] 1322.6.1 Dielectric Fittings. Dielectric finings that comply with the following shall be permitted only where required by the manufacturer of special medical equipment to electrically isolate the equipment from the system distribution piping: ( 1) They shall be of brass or copper construction with an approved dielectric. (2) They shall be permitted to be a union. (3) They shall be clean for oxygen where used for medical gases and medical support gases. [NFPA 99:5.1. 10.9. 2] 1322.7 Prohibited Joints. The following joints shall be prohibited throughout medical gas and vacuum distribution ^ pipeline systems: (1) Flared and compression-type connections, including connections to station outlets and inlets, alarm devices, and other components. (2) Other straight-threaded connections, including unions. (3) Pipe-crimping tools used to permanently stop the flow of medical gas and vacuum piping. (4) Removable and nonremovable push-fit fittings that cmplov a quick assembly push fit connector. [NFPA 99:5.KIOTO] » »i 1323.0 Installation of Piping and Equipment. i« 1323.1 Required Pipe Sizing. Piping systems shall be designed and sized to deliver the required flow rates at the utilization pressures. [NFPA 99:5.1.10.11.1.1] 1323.1.1 Mains and Branches. Mains and branches in medical gas piping systems shall be not less than DN15 (NPS Vi)(5 A inch O.D.) size. Mains and branches in medical-surgical vacuum systems shall be not less than DN20 (NPS Vi) (7 /s inch O.D.) size. [NFPA 99:5.1.10.11. 1.2, 5.1,10.11,1,3] 1323.1.2 Drops to Individual Stations. Dropsto indi- « vidual station outlets and inlets shall be not lessthan DN15 (NPS Vi)(5 /s inch O.D.) size.[NFPA 99:5.1.10.11.1,4] 1323.1.3 Runouts and Connecting Tubing. « Runouts to alarm panels and connecting tubing for gauges and alarm devices shall be permitted to be DN8 (NPS Vi)(Vs inch O.D.) size. [NFPA 99:5.1.10.11.1.5] 1323.1.4 Maximum Demand. Where the maximum demand for each medical gas or vacuum system docs not exceed the values in Table 1323.1 .4(1 ) through Table 1323.1.4(6), the size of pipe of each section of the system shall be determined in accordance with Section 1323.1.5. The size for systems beyond the range of Table 1323.1.4( 1 ) through Table 1323.1.4(6) shall be determined in accordance with Section 1323.1.6. 1323.1.5 Sizing Procedures. The size of each section of pipe in a system within the range of Table 1323.1.4(1 ) through Table 1324.1.4(6) shall be determined in accordance with the following: (1) Determine the total flow rate and number of outlets or inlets for each section of pipe in accordance with Table 1305.2 and Table 1305.3. (2) Measure the length of the section of pipe to each station outlet or inlet on the system. Multiply the measured pipe length by 1,5 (150 percent), to account for the number of fittings in the system, to determine the pipe equivalent length. » 232 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS (3) Beginning with the most remote outlet or inlet, multiply the total flow rate by the diversity factor specified in Table 1323,1,5(1) for each section of pipe to determine the sizing flow rate for the piping. (4) Select Table 1323.1.4(1) through Table 1324.1.4(6) based on the medical gas or vacuum being transported through the piping. (5) Select an estimated pipe size for determining the system pressure loss. Multiply the pipe equivalent length, for a given section of pipe, by the pressure loss for the sizing flow rate in the applicable table. Divide that number by 100 to determine the system pressure loss for the section of pipe. (6) Add the pressure loss for each section of piping, from the source equipment location to the outlet or inlet, to determine the total system pressure loss to each outlet or inlet. The total system pressure loss in the piping to each outlet or inlet shall not exceed the values specified in Table 1323.1.5(2). so designed that the total pressure drop or gain between the source equipment and an outlet or inlet shall not exceed the allowable pressures shown in Table 1305.1. 1323.2 Pipe Protection. Piping shall be protected against (( freezing 99:5,1,10,11,2] 1323.2.1 Exposed Piping. Piping exposed in corri- (( dors and other areas where subject to physical damage from the movement of carts, stretchers, portable equipment, or vehicles shall be protected. [NFPA 99:5.1. 10.11.2.1] 1323.2.2 Underground Piping. Piping underground (K within buildings or embedded in concrete floors or w alls shall be installed in a continuous conduit. [NFPA 99:5,1,10,11,2,2] 1323.3 Location Of Piping. Piping risers shall be permit- (£ ted to be installed in pipe shafts if protected from physical damage, effects of excessive heat, corrosion, or contact with oil. [NFPA 99:5.1.10.11.3,1] 1323.3.1 Prohibited Locations. Piping shall not be (( installed in kitchens, stairwells, elevator shafts, elevator| machine rooms, areas with open flames, electrical service equipment over 600 volts, and areas prohibited under NIPA 70 except for the following locations: (1) Room locations for medical air compressor supply systems and medical-surgical vacuum pump supply systems ( 2) Room locations for secondary distribution circuit panels and breakers having a maximum voltage rat- I mg of 600 volts [NFPA 99:5.1. 10.11.3.2] 1323.3.2 Approved Locations. Medical gas piping shall be permitted to be installed in the same service trench or tunnel with fuel gas lines, fuel oil lines, electrical lines, steam lines, and similar utilities, provided that the space is ventilated (naturally or mechanically) and the ambient temperature around the medical gas piping is limited to 130°F (54°C) maximum. [NFPA 99:5.1.10.11,3.3] 1323.3.3 Prohibited Contact with Oil. Medical gas « piping shall not be located w here subject to contact with oil, including a possible flooding area in the case of a major oil leak. [NFPA 99:5.1. 10.11.3.4] 1323.4 Pipe Support. Piping shall be supported from the building structure.[NFPA 99:5.1.10.11.4.1] ^ 1323.4.1 Hangers and Supports. Hangers and suppoits shall comply with and be installed in accordance with MSS SP-58.[NFPA 99:5.1. 10.11.4.2] 1323.4.2 CopperTube. Supports for copper tube shall be sized for copper tube. [NFPA 99:5.1.10.11.4.3] 1323.4.3 Damp Locations. In potentially damp loca- (( tions, copper tube hangers or supports that arc in contact writh the tube shall be plastic-coated or othciwisc be electrically insulated from the tube by a material that will not absorb moisture. [NFPA 99:5.1. 10.11.4.5] 1323.4.4 Maximum Spacing. Maximum support (£ spacing shall be in accordance with Table 1323.4.4. [NFPA 99:5.1.10.1 1.4.6] corrosion and physical damage. [NFPA » TABLE 1323.1.5(1) SYSTEM SIZING -FLOW REQUIREMENTS FOR STATION OUTLETS AND INLETST NUMBER OF OUTLETS AND INLETS TERMINAL UNITS PER FACILITY DIVERSITY PERCENTAGE OF AVERAGE FLOW PER OUTLETS AND INLETS TERPu MAL UNITS MINIMUM PERMISSIBLE SYSTEM FLOW OF ALL PRESSURIZED MEDICAL GAS SYSTEMS* (standard cubic feet per minute) 1-10 100% Actual Demand IL—25 75% 7.0 26-50 50% 13.1 51-100 50% 17.5 Notes: 1 Flow rates of station outlets and inlets in accordance with Table 1305.2. 2 The minimum system flow i ^ the average outlets and inlets How times the number of station outlets and inlets times the diversity percentage. » TABLE 1323.1.5(2) MAXIMUM PERMITTED PRESSURE LOSS IN MEDICAL GAS AND MEDICAL VACUUM SYSTEMS MAXIMUM ALLOWABLE SYSTEM PRESSURE LOSS (psi) TYPE OF SYSTEM Medical Air 5 Nitrogen Nitrous Oxide 15 5 Carbon Dioxide 5 Oxygen 5 Medical Vacuum 4 inches of mercury For SI units: 1 pound-force per square inch = 6.8947 kPat l inch of mercury = 3.386 kPa » 1323.1.6 Engineering Methods. For conditions other than those covered by Section 1323.1.4, such as longer runs of greater gas or vacuum demands, the size of each medical gas or vacuum piping system shall be determined by standard engineering methods acceptable to the Authority Having Jurisdiction, and each system shall be I 2021 UNIFORM PLUMBING CODE 233
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS » TABLE 1323.1.4(1) « PRESSURE LOSS FOR MEDICAL AIR TABLE 1323.1.4(2) PRESSURE LOSS FOR NITROGEN PRESSURE DROP (psi) PER 100 FEET2 PRESSURE DROP (psi) PER 100 FEET 2 FLOW RATE (SCFM) FLOW RATE (SCFM) 1 1 !£ INCH PIPE 3A INCH PIPE 1 INCH PIPE 1 3 A INCH PIPE A INCH PIPE 1 INCH PIPE 0.35 0.004 0.001 5.30 0.126 0.024 0.71 0.012 0.003 10.59 0.430 0.082 1.06 0.023 0.005 15.89 0.886 0.168 1.41 0.037 0.007 21.19 1.485 0.281 1.77 0.055 0.01I 26.48 2.220 0.419 2.12 0.075 0.015 31.78 3.089 0.581 2.47 0.097 0.019 2.82 0.123 0.024 37.08 4.087 0.766 3.18 0.151 0.029 42.37 0.975 3.53 0.181 0.035 47.67 1.206 4.24 0.249 0.048 52.97 1.460 0.361 4.94 0.326 0.063 0.080 0.098 0.1 IS 0.139 0.162 0.187 0.212 0.240 0.315 0.398 0.490 0.591. 0.701 0.818 0.944 1.078 1.369 1.690 2.043 58.26 1.736 0.429 5.65 0.413 63.56 2.033 0.502 6.36 0.507 68.85 2.352 0.580 7.06 0.611 0.030 0.035 0.041 0.047 0.053 0.060 0.079 0.100 0.123 0.148 0.176 0.205 0.236 0.268 0.341 0.421 0.509 74.15 2.692 0.663 7.77 0.723 79.45 3.054 0.752 8.47 0.843 84.74 3.436 0.845 9.18 0.969 90.04 3.840 0.943 9.89 1.108 10.59 95.34 4.264 1.046 12.36 1.252 1.647 100.63 4.709 1.154 14.12 2.090 105.93 1.267 15.89 2.580 l J 6.52 1.508 17.66 3.116 127.12 1.768 19.42 137.71 2.046 21.19 148.30 2.344 22.95 158.90 2.660 24.72 169.49 2.994 28.25 180.08 3.347 31.78 190.67 3.719 35.31 38.84 2,425 0,603 201.27 4.108 42.37 2,838 0,705 211.86 4.516 45.90 3,280 0,814 222.45 4.942 49.43 3,751 0.929 233.05 52.97 4,249 1,052 243.64 56.50 1,181 254.23 60.03 1,318 264.83 63.56 1,461 275.42 67.09 1,61I 286.01 70.62 1,768 296.60 81.21 2,276 88.28 2,647 307.20 95.34 3,044 317.79 For SIunits: 1 standard cubic foot per minute = 28.32 SLPM, I inch=25 min, I toot = 304.8 mm, J pound-force per square inch = 6.8947 kPa Notes: Based on the pressure of 14.7 psig (101 kPa) at 68T(2Gr"C). : Based on the pressure of 55 psig (379 kPa) at 68T(20*0). For SI units: I standard cubic toot per minute=28.32 SLPMr 1 inch= 25 mm 1 foot = 304.8 mm. I pound-force per square inch= 6.8947 kPa Notes: Based on the pressure of 14.7 psig (101 kPa) at 68T(20°C). 2 Based on the pressure of 55 psig (379 kPa) at 68T(20°C). i l 234 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS » TABLE 1323.1.4(3) « PRESSURE LOSS FOR NITROUS OXIDE AND CARBON DIOXIDE TABLE 1323.1.4(4) PRESSURE LOSS FOR OXYGEN PRESSURE DROP (psi) PER 100 FEET2 PRESSURE DROP (psi) PER 100 FEET 2 FLOW RATE (SCFM) FLOW RATE (SCFM) 1 1 !AINCH PIPE 3A INCH PIPE 1 INCH PIPE INCH PIPE % INCH PIPE 1 INCH PIPE 0.35 0.004 0,35 0.004 0.71 0.014 0.71 0.013 0.003 1.06 0.029 1.06 0.025 0.005 1.41 0.047 1.41 0.041 0.008 1.77 0.070 1.77 0.060 0.012 2.12 0.096 2.12 0.082 0.016 2.47 0.125 2.47 0.107 0.021 2.82 0.135 0.026 2.82 0.159 3.18 0.166 0.032 3.18 0.195 3.53 0.199 0.038 3.53 0.235 0.045 4.24 0.274 0.053 4.24 0.324 0.425 0.062 0.08 : 0.103 4.94 0.359 0.454 0.558 0.672 0.795 0.927 1.066 1.218 1.377 0.069 4.94 5.65 0.087 0.107 5.65 0.539 6.36 6.36 0.664 0.127 0.153 0.181 0.2 I I 0.243 0.278 0.314 0.413 0.525 0.648 0.783 7.06 0.129 0.033 7.06 0.802 0.038 0.045 0.053 0.061 0.070 0.079 0.103 0.131 0.162 0.195 7.77 0.153 0.039 7.77 0.950 8.47 0.179 0.045 8.47 1.110 9.18 0.205 0.052 9.18 1.281 9.89 0.233 0.059 9.89 1.463 10.59 12.36 14.12 15.89 17.66 19.42 21.19 22.95 24.72 28.25 31.78 35.31 0.263 0.346 0.066 0.087 10.59 1.656 1.81l 12.36 2.186 2.298 2.837 3.456 0.438 0.110 14.12 2.752 0.539 0.135 15.89 3.442 0.650 0.163 17.66 4.166 0.771 0.193 19.42 0.929 0.744 0.858 0.231 0.270 0.312 0.900 0.225 21.19 1.038 0.260 22.95 1.185 0.295 24.72 0.980 1.244 1.537 0.356 0.453 0.560 1.505 0.375 28.25 1.859 0.463 31.78 2.247 0.559 35.31 1.858 0.677 38.84 2.667 0.663 38.84 2.205 0.804 42.37 3.121 0.775 42.37 2.58 J 0.941 45.90 3.607 0.895 45.90 2.982 1.088 49.43 4.125 1.022 49.43 3.41I 1.245 52.97 1.157 52.97 4.249 1.41I 56.50 1.299 56.50 1.587 60.03 1.449 60.03 1.772 63.56 1.607 63.56 1.967 67.09 1.772 67.09 2.174 70.62 1.944 70.62 2.385 81.21 2.503 79.45 88.28 2.959 3.589 91.81 3.127 102.40 3.813 For SIunits: 1 standard cubic foot per minute = 28.32 SLPM, I inch = 25 inint I toot = 304.8 mm, I pound-force per square inch = 6.8947 kPa Notes: Based on the pressure of 14.7 psig (101 kPa) at 68T(2Gr"C). : Based on the pressure of 55 psig (379 kPa) at 68T(20*0). For SI units: I standard cubic toot per minute =28.32 SLPM, i inch= 25 mm, 1 foot = 304.8 mm. I pound-force per square inch = 6.8947 kPa Notes: Based on pressure of 14.7 psig (101 kPa) at 68*F (20*C). 2 Based on pressure of 55 psig (379 kPa) at 6&°F(20 r 'C). i l 2021 UNIFORM PLUMBING CODE 235
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS » TABLE 1323.1.4(5) « PRESSURE LOSS FOR VACUUM TABLE 1323.1.4(5) PRESSURE LOSS FOR VACUUM (continued) VACUUM LOSS (inch of mercury) PER 100 FEET FOR COPPER TUBE2 VACUUM LOSS (Inch of mercury) PER 100 FEET FOR COPPER TUBE5 FLOW RATE (SCFM) FLOW RATE (SCFM) 3 /4 lNCH TUBE 1 INCH TUBE 2 INCH TUBE 1 1 ' /4 INCH TUBE 1 hINCH TUBE 1 3A INCH TUBE 1 INCH TUBE 2 INCH TUBE 1 AINCH TUBE 1hINCH TUBE 49.43 3.645 0.956 0.35 0.019 52.97 4.122 I .OKI 0.71 0.061 56.50 4.626 1.212 1.06 0.120 63.56 1.495 1.41 0.194 70.62 1.803 77.68 2.13K 1.77 0.2K4 K4.74 2.497 2.12 0.3K7 91.SI 2.KK2 2.47 0.504 - 98.S7 3.291 2.S2 0.634 105.93 3.724 I 12.99 4.181 3.18 0.777 For SIunits: I standard cubic loot pci minute =28.32 SLPM,1 inch= 25 mm, 1 foot = 304.8 mm,Iinch ofmercury = 3.386 kPa Notes: Based on the pressure of 14.7 psig (101 kPa) at 68T (20°C). : Based on the pressure of 19 inches of mercury gauge vacuum (64 kPa) at 6S°F (2G*C). 3.53 0.932 0.23K 4.24 1.277 0.325 l 4.94 1.669 0.424 5.65 2.106 0.534 6.36 2.5K6 0.655 7.06 3.110 0.787 0.272 7.77 3.674 0.929 0.321 PRESSURE LOSS TABLE FOR 1323.1 VACUUM .4(6) (CATEGORY 3) « I VACUUM LOSS (Inch of mercury) PER 100 FEET FOR PLASTICTUBE2 1 INCH 11/4 INCH 1 I N C H TUBE TUBE TUBE 8.47 4.280 1.081 0.373 9.18 4.927 1.243 0.429 9.89 1.416 0.488 FLOW RATE (SCFM) 10.59 1.597 0.551 0.242 1 3A INCH TUBE 0.005 O.OIO 0.015 0.021 0.026 0.060 2 INCH TUBE 11,30 1.789 0.616 0.270 0.35 12.01 1.990 0.685 0.300 0.71 12.71 2.200 0.757 0.332 1.06 13.42 2.419 0.832 0.365 1.41 14.12 2.648 0.911 0.399 L .77 14.83 2.886 0.992 0.435 2.12 0 . 0 - 0 15.54 3.132 1.077 0.471 2.47 0.077 0.020 16.24 3.388 1.164 0.510 2.82 0.096 0.025 16.95 3.652 1.254 0.549 3.18 0.1 IS 0.031 0.01 I 17.66 3.925 1.348 0.590 3.53 0.141 0.036 0.013 18.36 4.207 1.444 0.632 0.167 4.24 0.192 0.050 0.017 19.07 4.498 1.543 0.675 0.179 4.94 0.249 0.064 0.023 0.010 5.65 0.313 0.081 0.028 0.012 19.77 4.797 1.646 0.720 0.190 6.36 0.383 0.099 0.035 0.015 20.48 1.751 0.766 0.202 7.06 0.459 0.1 IS 0.041 0.018 21.19 1.859 0.813 0.214 7.77 0.541 0.139 0.049 0.021 24.72 2.441 1.066 0.281 8.47 0.628 0.161 0.056 0.024 28.25 3.092 1.350 0.356 9.18 0.722 0.185 0.065 0.027 31. .78 3.81 I 1.662 0.438 9.89 0.821 0.210 0.073 0.031 35.31 4.596 2.004 0.527 10.59 0.925 0.237 0.083 0.035 38.84 2.373 0.624 11.30 1.035 0.265 0.092 0.039 0.010 42.37 2.770 0.728 12.01 1.151 0.294 0.102 0.043 0.011 45.90 3.194 0.838 12.71 1.270 0.324 0.1 13 0.048 0.012 236 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS » TABLE 1323.1.4(6) « PRESSURE LOSS FOR VACUUM (CATEGORY 3) (continued) TABLE 1323.4.4 MAXIMUM PIPE SUPPORT SPACING [NFPA 99: TABLE 5.1.10.11.4.6] VACUUM LOSS (inch of mercury) PER 100 FEET FOR PLASTICTUBE^ FLOW RATE (SCFM) HANGER SPACING (feet) 3 PIPE SIZE /4 INCH TUBE 1 1 INCH TUBE 2 INCH TUBE 1 /A INCH TUBE 1h INCH TUBE (NPS ] DNS A) (y8 of an inch O.D.) 5 13.42 1,396 0,356 0.124 0.052 0.014 DNI 0 (NPS H) ( Vi of an inch O.D.) 6 14.12 1.525 0.389 0.135 0.057 0.015 DNI 5 (NPS Vi ) (54 of an inch O.D.) 6 14.83 1.662 0.424 0.147 0.062 0.016 DN20 (NPS y4) C/% of an inch O.D.) 7 15.54 1.803 0.460 0.160 0.06S 0.017 DN25 (NPS 1 ) (VA of an inch O.D. j S DN32 (NPS VA) (1H of an inch O.D. j 9 16.24 1.948 0.496 0.172 0.073 0.019 DN40 and (NPS VA) 16.95 2.099 0.535 0.1S6 0.07S 0.020 (VA of an inch O.D.) 10 larger 17.66 2.256 0.574 0.199 0.OS4 0.022 Vertical risers, all sizes, every floor, but not to exceed: 15 IS.36 2.415 0.615 0.213 0.090 0.023 19.07 2.581 0.657 0.228 0.096 0.025 For SI units: 1 inch = 25 mm, I foot = 304.8 mm 19.77 2.750 0.699 0.243 0.102 0.026 20.48 2.925 0.744 0.258 0.109 0.028 1323.5.1 Backfilling and Trenching. The installstion procedure for underground piping shall protect the piping from physical damage while being backfilled. [NFPA 99:5.1.10.11.5.2] 1323.5.2 Conduit, Cover, or Enclosure. If under- « ground piping is protected by a conduit, cover, or other enclosure, the following requirements shall be met: ( 1 ) Access shall be provided at the joints for visual inspection and leak testing. (2) The conduit, cover, or enclosure shall be self-draining and not retain groundwater in prolonged contact with the pipe.[NFPA 99:5.1. 10.11.5.3] 1323.5.3 Excessive Stresses. Buried piping that will be subject to surface loads shall be buried at a depth that will protect the piping or its enclosure from excessive stresses. [NFPA 99:5.1. 10.11.5.4] 1323.5.4 Minimum Backfill. The minimum backfilled cover above the top of the pipe or its enclosure for buried piping outside of buildings shall be 36 inches (914 mm), except that the minimum cover shall be permitted to be reduced to 18 inches (457 mm) where there is no potential tor damage from surface loads orsurface conditions. [NFPA 99:5.1.10.1 1.5.5] 1323.5.5 Trenches. Trenchesshall be excavated so that the pipe or its enclosure has firm, substantially continu- ^ ous bearing on the bottom of the trench. [NFPA 99:5.1. 10.11.5.6] 1323.5.6 Composition of Backfill. Backfill shall be « clean, free from material that can damage the pipe, and compacted. [NFPA 99:5.1.10.11.5.7] 1323.5.7 Marker. A continuous tape or marker placed KK immediately above the pipe or its enclosure shall clearly identify the pipeline by specific name. [NFPA 99:5.1T 0.11.5.8] 1323.5.8 Warning. A continuous warning means shall also be provided above the pipeline at approximately ^ one-half the depth of burial. [NFPA 99:5.1.10.11.5.9] 21.19 3.106 0.790 0.274 0.115 0.030 24.72 4.074 1.034 0.358 0.151 0.039 28.25 i:307 0.452 0.190 0.049 31.78 1.608 0.556 0.234 0.060 35.31 1.936 0.669 0.281 0.072 38.84 2.291 0.791 0.332 0.085 42.37 2.672 0.922 0.387 0.099 45.90 3.078 1.062 0.446 0.113 49.43 3.510 1.211 0.508 0.129 52.97 3.969 1.368 0.574 0.146 56.50 4.450 1.534 0.643 0.163 63.56 1.890 0.792 0.201 70.62 2.278 0.954 0.242 77.68 2.699 1.130 0.286 84.74 3.151 1.3 IS 0.334 91.81 3.634 1.520 0.385 98.87 4.148 1.734 0.439 105.93 4.691 1.961 0.496 112.99 2.200 0.556 For SI units: 1 standard cubic foot per minute = 28.32 SLPM, I inch = 25 mm, I foot = 304.8 mm, I inch of mercury = 3.386 kPa Notes: Based on the pressure of 14.7 psig ( 1 0 1 kPa) at 68T(SO^C). Based on the pressure of 19 inches of mercury gauge vacuum (64 kPa ) at 68T(20PC). 1 » 1323.4.5 Seismic Provisions. Where required, medical gas and vacuum piping shall be seismically restrained against earthquakes in accordance with the applicable building code. [NFPA 99:5.L10.11 4.7] yy 1323.5 Frost Protection. Buried piping outside of buildings shall be installed below the local level of frost penetration.[NFPA 99:5.1. 10.11.5.1] 2021 UNIFORM PLUMBING CODE 237
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1323.9.1 Medical Vacuum System. A vacuum sys- <X tcm shall not be permitted to be converted for use as a gas system. [NFPA 99:5.1.10.11.9.2] 1323.10 Qualifications of Installers. The installation of l ^ \ medical gas and vacuum systemsshall be made by qualified, competent technicians who arc experienced in performing such installations, including all personnel who actually install the piping system. Installers of medical gas and vacuum piped distribution systems, all appurtenant piping supporting pump and compressor source systems, and appurtenant piping supporting source gas manifold systems not including permanently installed bulk source systems, shall be certified in accordance with ASSE 6010. [NFPA 99:5.1.10.11. 10.1, 5.1.10.11.10.2] 1323.10.1 Brazing. Brazing shall be performed by individuals who are qualified in accordance with Section ^ 1323.11 . [NFPA 99:5.1.10.11 .10.5] 1323.10.2 Documentation. Prior to any installation I work , the installer of medical gas and vacuum piping ^ shall provide and maintain documentation on the job site for the qualification of brazing procedures and individual brazers that is required under Section 1323.11. [NFPA| 99:5.1 . 10.11.10.6] 1323.10.3 Health Care Organization Personnel. « Health care organization personnel shall be permitted to install piping systems [fall of the requirements of Section 1323.10 are met during the installation. [NFPA 99:5.1.10.11.10.7] 1323.11 Qualification of Brazing Procedures and Brazing. Brazing procedures and brazer performance for the| installation of medical gas and vacuum piping shall be qualified in accordance with either Section IX, "Welding and Brazing Qualifications, " of the ASME Boiler and Pressure Vessel Code, or AWS B2.2, both as modified by Section 1323.11.1 through Section 1323.11.4. [NFPA 99:5.1.10.11.11.1] 1323.11.1 Examination. Brazers shall be qualified by visual examination of the test coupon followed by sec- ^ tioning.[NFPA 99:5.1.10.11.11.2] 1323.11.2 Brazing Procedure Specification. The brazing procedure specification shall address cleaning, joint clearance, overlap, internal purge gas, purge gas flow rate, and filler metal. [NFPA 99:5.1.10.11.11.3] 1323.11.3 Documentation. The brazing procedure qualification record and the record of brazer performance ^ qualification shall document filler metal used, base metals. cleaning, joint clearance, overlap, internal purge gas and flow rate during brazing of coupon, and absence of internal oxidation in the completed coupon. [NFPA 99:5.1. 10.11. 11.4] 1323.11.4 Procedures. Brazing procedures qualified by a technically competent group or agency shall be permitted under the following conditions: ( l ) The brazing procedure specification and the procedure qualification records meet the requirements of this code. » 1323.5.9 Wall Sleeve. Where underground piping is installed through a wall sleeve, the outdoor end of the sleeve shall be sealed to prevent the entrance of groundwater into the building. [NFPA 99:5.1. 10.11.5.10] )) 1323.6 Connectors. Hose and flexible connectors, both metallic and nonmetallic, shall be no longer than necessary and shall not penetrate or be concealed in walls, floors, ceilings, or partitions. [NFPA 99:5.1.10.11.6.1] 1323.6.1Flexible Connectors. Flexible connectors, metallic or nonmetallic, shall have a minimum burst pressure, w ith a gauge pressure of 1000 psi (6895 kPa). [NFPA 99:5.1. 10.11.6.2] 1323.6.2 Metallic Flexible Joints. Metallic flexible joints shall be permitted in the pipeline where required for expansion joints, seismic protection, thermal expansion, or vibration control and shall be as follows: (1) l or all wrctted surfaces, made of bronze, copper, or stainless steel. (2) Cleaned at the factory for oxygen service and received on the job site with certification ot cleanliness. (3) Suitable for serv ice i X 300 psig (2068 kPa) or above and able to withstand temperatures of 1000°F (538°C). (4) Provided with brazing extensions to allow brazing into the pipeline per Section 1321.0. (5) Supported with pipe hangers and supports as required for their additional weight. [NFPA 99:5.1.10.1 1.6.3] X> 1323.7 Prohibited System Interconnections. Two or more medical gas or vacuum piping systems shall not be interconnected for installation, testing, or any other reason except as permitted by Section 1323.7.1. [ Nl PA 99:5.1.10.11.7.1] 1323.7.1Medical Gas and MedicalVacuum. Medical gas and vacuum systems with the same contentsshall be permitted to be interconnected with an inline valve installed between the systems. [NFPA 99:5.1.10.11.7.2] 1323.7.2 Leak Testing. Leak testing shall be accomplished by separately charging and testing each individual piping system. [Nl PA 99:5.1. 10.11.7.3] yy 1323.8 Manufacturer's Instructions.The installation of individual components shall be made in accordance with the instructions of themanufacturer.Manufacturers instructions shall include directions and information deemed by the manufacturer to be adequate for attaining proper operation, testing, and maintenance of the medical gas and vacuum systems. Copies of the manufacturer's instructions shall be left with the system owner.[NFPA 99:5.1. 10.11.8.1 -5.1 10 11.8.3] yy 1323.9 Changes in System Use. Where a positive-pressure medical gas piping distribution system originally used or constructed for use at one pressure and for one gas is converted for operation at another pressure or for another gas, all |provisions of Section 1318.0 through Section 1323.12 shall apply as if the system were new. [NFPA 99:5.1.10.11.9.1] » » i l » » l 238 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1323.13.3 Faint. Medical gas piping shall not be painted. [NFPA 99:5.1.1lj.3] 1323.14 Identification of Shutoff Valves. Shutoff valves « shall be identified with the following: (1) Name or chemical symbol for the specific medical gas or vacuum system. (2) Room or areas served. (3) Caution to not close or open valve except in emergency. [NFPA 99:5,1.11.2.1] 1323.14.1 Nonstandard Operating Pressures. Where positive pressure gas piping systems operate at pressures other than the standard gauge pressure of 50 psi (345 kPa) to 55 psi (379 kPa) ora gauge pressure of 160 psi ( l 103 kPa) to 185 psi (1276 kPa) for nitrogen or instrument air, the valve identification shall also include the nonstandard operating pressure. [NFPA 99:5,LI 1.2,2] 1323.14.2 Source Valves. Source valves shall be labeled in substance as follows: SOURCE VALVE FOR THE (SOURCE NAME) [NFPA 99:5.1.11.2.3] (2) The employer obtains a copy of both the brazing procedure specification and the supporting qualification records from the group or agency and signs and dates these records, thereby accepting responsibility for the qualifications that were performed by the group or agency. (3) The employer qualifies at least one brazer following each brazing procedure specification used . [NFPA 99:5,L10,1 LI 1,5] 1323.11.5 Conditions of Acceptance. An employer shall be permitted to accept brazer qualification records of a previous employer under the following conditions: (1) The brazer has been qualified following the same or an equivalent procedure that the ncwr employer uses. (2) The new employer obtains a copy of the record of brazer performance qualification tests from the previous employer and signs and dates these records, thereby accepting responsibility for the qualifications performed by the previous employer. [NFPA 99:5.1.10.11.11.6] 1323.11.6 Qualifications. Performance qualifications of brazorsshall remain in effect indefinitely, unlessthe brazer docs not braze with the qualified procedure for a period exceeding 6 months orthere is a specific reason to question the ability of the brazer. [NFPA 99:5. LlO.l Ll1.7] }y 1323.12 Breaching or Penetrating Medical Gas Piping. Positive pressure patient medical gas piping and medical support gas piping shall not be breached or penetrated by any means or process that will result in residual copper particles or other debris remaining in the piping or affect the oxygen-clean interior of the piping. The breaching or penetrating process shall ensure that any debris created by the process remains contained within the work area . [NFPA 99:5.1.10.11.12.1, 5.1.10.11.12.2] » 1323.13 Labeling, Identification and Operating Pressure. Color and pressure requirementsshall be in accordance |with Table 1305.1. [NFPA 99:5-1.11] 1323.13.1 Pipe Labeling. Piping shall be labeled by stenciling or adhesive markers that identify the patient medical gas, the support gas. or the vacuum system and include the following: (1) Name of the gas or vacuum system or the chemical symbol per Table 1305.1. (2) Gas or vacuum system color code per Table 1305.1. (3) Where positive pressure gas piping systems operate at pressures other than the standard gauge pressure in Table 1305.1, the operating pressure in addition to the name of the gas. [NFPA 99:5.1.11.1. 1 J 1323.13.2 Location of Pipe Labeling. Pipe labels shall be located as follows: (1) At intervals of not more than 20 feet (6096 mm). (2) At least once in or above every room. (3) On both sides of walls or partitions penetrated by the piping. (4) At least once in cveiy story height traversed by risers. [NFPA 99:5.1.11.1.2] » » 1323.14.3 MainLineValves. Main line valves shall be <X labeled in substance as follows: MAIN LINE VALVE FOR THE (GAS/VACUUM NAME) SERVING (NAME OF BUILDING) [NI PA 99:5.1.11.2.4] 1323.14.4 Riser Valves. The riser valvc(s) shall be labeled in substance as follows: RISER FOR THE (GAS/VACUUM NAME) SERVING (NAME OF THE AREA ^BUILDING SERVED BY THE PARTICULAR RISER) [NFPA 99:5.1.11.2.5] » 1323.14.5 Service Valves. The service valvc(s) shall <X be labeled in substance as follows: SERVICE VALVE FOR THE (GAS/VACUUM NAME) SERVING (NAME OFTHE AREA/BUILDING SERVED BY THE PARTICULAR VALVE) [NFPA 99:5. L . l 1.2.6] I » 1323.14.6 Zone Valve Box. Zone valve box assembliesshall be labeled with the rooms, areas, or spaces that| ^ they control as follows: ZONE VALVES FOR THE (GAS/VACUUM NAME) SERVING (NAME OF ROOMS OR SPACES | SERVED BY THE PARTICULAR VALVE) 2021 UNIFORM PLUMBING CODE 239
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS Labeling shall either be visible from outside the zone valve box assembly through the cover or be replicated on the outside, but not affixed to the removable cover.[NFPA 99:5.1.11.2.7] Y} 1323.15 Identification. Station outlets and inlets shall be identified as to the name or chemical symbol for the specific medical gas or vacuum provided . In sleep labs, where the outlet is downstream of a flow control device, the station outlet identification shall include a warning not to use the outlet for ventilating patients. Where medical gas systems operate at pressures other than the standard gauge pressure of 50 psi to 55 psi (345 kPa to 380 kPa) or a gauge pressure of 160 psi to 185 psi (1103 kPa to 1275 kPa) for nitrogen, the station outlet identification shall include the nonstandard operating pressure in addition to the name of the gas. [NFPA 99:5.1.11,3.1 - 5.1.11.3.2] (1) After blowdown of the distribution piping. (2) After installation of station outlet/inlet rough-in assemblies, (3) Prior to the installation of components of the distribution piping system that would be damaged by the test pressure (e.g. , prcssurc/vacuum alarm devices, pressure/vacuum indicators, line pressure relief valves). [NFPA 99:5.1.12.2.3.1, 5.1.12.2.3.2] 1324.5.1 Shutoff Valve. The source shutoff valve shall remain closed during tests specified in Section 1324.5 through Section 1324.5.1.2. [NFPA 99:5.1. 12.2.3.3] 1324.5.1.1 Required Test Pressure. The test (i. pressure for pressure gases and vacuum systems shall be 1.5 timesthe system operating pressure but not less than a gauge pressure of 150 psi (1034 kPa). The test pressure shall be maintained until each joint has been examined for leakage by means of a leak dctcctant that is safe for use with oxygen and docs not contain ammonia. [NFPA 99:5.1.12.2.3.4, 5.1.12.2.3.5] 1324.5.1.2 Leaks. Leaks, if any, shall be located, repaired (if permitted), replaced (if required), and ^ retested. [NFPA 99:5.1.12,2.3,6] 1324.5.2 Initial Cross-Connection Test. It shall be determined that no cross-connections exist between the various medical gas and vacuum piping systems. [NFPA 99:5.1 . 12.2.4] 1324.5.2.1 Atmospheric Pressure. All piping // systems shall be reduced to atmospheric pressure. [NFPA 99:5.1.12.2.4.1] 1324.5.2.2 Sources of Tesl Gas. Sources of test gas shall be disconnected from all piping systems, ^ except for the one system being tested. [NFPA 99:5.1.12.2.4.2] 1324.5.2.3 System to Be Charged. The system <X under test shall be charged with oil-free, dry nitrogen NF to a gauge pressure of 50 psi (345 kPa). [NFPA 99:5.1.1222.4.3] 1324.5.2.4 Check Outlets and Inlets. After the installation of the individual faceplates with appropriate adapters matching outlet/inlet labels, each individual outlet/inlet in each installed medical gas and vacuum piping system shall be checked to determine that the test gas is being dispensed only from the piping system being tested. [NFPA 99:5.1.12.2.4.4] 1324.5.2.5 Repeat Test. The cross-connection test referenced in Section 1324.5.2 shall be repeated for each installed medical gas and vacuum piping system. [NJ PA 99:5.1.12.2.4.5] 1324.5.2.6 Identification of System. The proper « labeling and identification of system outlets/inlets shall be confirmed during these tests. [NFPA 99:5.1. 12.2.4.6] 1324.5.3 Initial Piping Purge Tests. The outlets in|« each medical gas piping system shall be purged to remove any particulate matter from the distribution piping. [NFPA 99:5.1.12.2.5] )>l 1324.0 Performance Criteria and Testing Category 1 |(Gases, Medical Surgical Vacuum). )) 1324.1 Where Required. Inspection and testing shall be performed on components, or portions thereof, of new, piped medical gas or vacuum systems, additions, renovations, temporary installations, or repaired systems in accordance with Section 1324.2 through Section 1324.5. 11 , and certified in accordance with Section 1306.0. y} 1324.2 Breached System; II systems that are breached and components that are subject to additions, renovations, or replacement (e.g., new gas sources: bulk, manifolds, compressors, dryers* alarms) shall be inspected and tested. Systems shall be deemed breached at the point of pipeline intrusion by physical separation or by system component removal, replacement, or addition. Breached portions of the systemssubject to inspection and testing shall be confined to only the specific altered zone and components in the immediate zone or area that is located upstream tor vacuum systems and downstream for pressure gases at the point or area of intrusion. [NFPA 99:5.1.12.1.3 -5.1. 12.1.5] 1324.2.1 Reports. The inspection and testing reports shall be submitted directly to the party that contracted for the testing, who shall submit the report through channels to the responsible facility authority and any others that are required. Reportsshall contain detailed listings of all findings and results. [NFPA 99:5.1.12.1.6* 5.1.12, L7J Yy 1324.3Test Gas. The test gasshall be oil-free, dry nitrogen NF. [NFPA 99:5.1.12.2.1.2] yy 1324.4 Initial Piping Blowdown. Piping in medical gas and vacuum distribution systems shall be blown clear by means of oil-free, dry nitrogen NF after installation of the distribution piping but before installation of station outlet/inlet rough-in assemblies and other system components(e.g.* pressure/vacuum alarm devices* pressure/vacuum indicators, pressure relief valves, manifolds, source equipment). [NFPA 99:5.1.12.2.2] )> 1324.5 Initial PressureTests-Medical Gas and Vacuum Systems. Each section of the piping in medical gas and vacuum systems shall be pressure tested. Initial pressure tests shall be conducted as follows: l« » i 240 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1324.5.5.1 Timeframe for Testing. Tests shall be conducted after installation of all components of the vacuum system. [NJ PA 99:5.1,12* 2.7* 1] 1324.5.5.2 Length of Testing. The piping systerns shall be subjected to a 24 hour standing vacuum test. [ NFPA 99:5,142.2.7.2] 1324.5.5.3 Test Pressure. Test pressure shall be between 12 inches (305 mm) 1 IgV and full vacuum. | [NFPA 99:5.1.12.2.7.3] 1324.5.5.4 Disconnection of Testing Source. \\ During the test, the source of test vacuum shall he disconnected from the piping system. [NFPA 99:5.1.12.2.7.4] 1324.5.5.5 Conclusion of Test. At the conclu- « sion of the test, there shall be no change in the vacuum other than that attributed to changes of ambient| temperature.[NFPA 99:5.1.12.2.7.5] 1324.5.5.6 Proof Of Testing.The 24 hour standing pressure test of the vacuum system shall be witnessed by the Authority Having Jurisdiction or its designee. A form indicating that this test has been performed and witnessed shall be provided to the verifier at the start of the tests required in Section 1324.5.7 through| Section 1324.5.11. [NFPA 99:5.1.12.2.7.6] 1324.5.5.7 Leaks. Leaks, if any, shall he located, KK repaired (if permitted) or replaced (if required ) , and retested. [ NFPA 99:5 1.12.2.7.7] 1324.5.6 System Inspection. System inspections shall be performed prior to concealing piping distribution systems in walls, ceilings, chases, trenches, underground, or otherwise hidden from view. [NFPA 99:5.1. 12.3. 1.1] 1324.5.6.1 Test Gas. The test gasshall be nitrogen NF. [NFPA 99:5.1.12.3.1.2] 1324.5.6.2 Inspection Qualification. Inspectionsshall be conducted by a party technically competent and experienced in the field of medical gas and vacuum pipeline inspections and testing and meeting the requirements of ASSE 6020, or ASSE 6030. [NFPA 99:5.1.12.3.1.3] 1324.5.6.3 Inspection Personnel. Inspections shall be performed by a party other than the installing contractor. [NFPA 99:5.1.12.3.1.4] 1324.5.6.4 Qualifications. Where systems have not been installed by inhousc personnel, inspections shall be permitted by personnel of the organization who meet the requirements of Section 1324.5.6.2. [NFPA 99:5.1.12.3.1.5] 1324.5.6.5 Inspections. The initial pressure tests performed by the installing contractor shall be witnessed by an ASSE 6020 inspector, an ASSE 6030 verifier, or the Authority Having Jurisdiction or its designee. A form indicating that this test has been performed and witnessed shall be provided to the verifier at the start of the tests required in Section 1324.5.7 through Section 1324.5.11 . The presence and correctness of labeling and valve tagging required by this » Procedure. Using appropriate adapters, each outlet shall be purged with an intermittent high-volume flow of test gas until the purge produces no discoloration in a clean white cloth. [NFPA 99:5.1.12.2.5.1] 1324.5.3.2 Location. The purging required in Section 1324.5.3.1 shall be started at the closest outlet/inlet to the zone valve and continue to the furthest outlet/inlet within the zone. [ NFPA 99:5.1.12.2.5.2] 1324.5.4 Standing Pressure Tests -for Positive Pressure Medical Gas Piping Systems. After successful completion of the initial pressure tests under Section 1324.5 through Section 1324.5.1.2, medical gas distribution piping shall be subjected to a standing pressure test. [NJ PA 99:5.1,12.2.6] 1324.5.4.1 Time Frame for Testing. Tests shall be conducted after the final installation of station outlet valve bodies, faceplates, and other distribution system components (e.g. pressure alarm devices, pressure indicators, line pressure relief valves, manufactured assemblies, hose). [NFPA 99:5.1.12.2.6.1] 1324.5.4.2 Source Valve. The source valve shall be closed during this test. [NFPA 99:5.1.12.2.6.2] 1324.5.4.3 Length of Testing. The piping systems shall be subjected to a 24 hour standing pressure test using oil-free, dry nitrogen NF. [ NFPA 99:5.1.12.2.6.3] 1324.5.4.4 Test Pressure. Test pressuresshall be 20 percent above the normal system operating line pressure. [NFPA 99:5.1.12,2.6.4] 1324.5.4.5 Conclusion of Test. The leakage over the 24 hour test shall not exceed 0.5 percent of the starting pressure [e.g., 0.3 psi (2 kPa) starting at 60 psig (414 kPa), 0.125 inch (3.2 mm) HgV starting at 25 inches (635 mm) HgV] except that attributed to specific changes of ambient temperature. [NFPA 99:5.1. 12.2.6.5] 1324.5.4.6 Leaks. Leaks, if any,shall be located, repaired (if permitted) or replaced (if required ), and retested . [NFPA 99:5.1.12.2.6.6] 1324.5.4.7 Proof of Testing. The 24 hour standing pressure test of the positive pressure system shall be witnessed by an ASSE 6020 inspector, an ASSE 6030 verifier, or the Authority Having Jurisdiction or its designee. A form indicating that thistest has been performed and witnessed shall be provided to the verifier at the start of the tests required in Section 1324.5.7 through Section 1324.5.11.[NFPA 99:5.1.12.2.6.7] 1324.5.5 Standing PressureTests -Medical Vacuum Piping Systems. After successful completion of the initial pressure tests under Section 1324.5 through Section 1324.5.1.2, vacuum distribution piping shall be subjected to a standing vacuum test. [ NFPA 99:5.1.12.2.7] 1324.5.3.1 » i » i » » » » » » » i » 2021 UNIFORM PLUMBING CODE 241
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS code for all concealed components and piping distribution systems shall be inspected. [ NFPA 99:5.1.12.3.2 — 5.1.12.3.2.2] 1324.5.7 System Verification. Verification testsshall be performed only after all tests required in Section 1324.3 through Section 1324.5.5.7, Installer Performed Tests, have been completed. [NFPA 99:5.1. 12.4. 1.1] 1324.5.7.1 Test Gas. The test gas shall be oil-free, dry nitrogen Nl or the system gas where permitted . [NFPA 5.1.12.4.1.2] 1324.5.7.2 Approved Tester. Testing shall be conducted by a party technically competent and experienced in the field of medical gas and vacuum pipeline testing and meeting the requirements of ASST 6030, except as required by Section 1324,5.7,3.[NFPA 99:5.1.12,4, 1 ,3] Testing shall be performed by a party other than the installing contractor. [ NFPA 99:5,1,12,4.1.5] Where systems have not been installed by inhouse personnel, testing shall be permitted by personnel of that organization who meet the requirements of Section 1324.5.7.2. [NFPA 99:5.1.12.4.1.6] 1324.5.73 Cryogenic FluidTesting. Testing of the cryogenic fluid central supply system shall be conducted by a party technically competent and experienced in the field of cryogenic fluid systems and meeting the requirements of ASSE 6035, in accordance with the mandatory requirements in CGA M-l . [NFPA 99:5.1.12.4.1.4] 1324.5.8 Particulate Matter. In order to remove any traces of particulate matter deposited in the pipelines as a result of construction, a heavy, intermittent purging of the pipeline shall be done. [NFPA 99:5.1.12.4.6] 1324.5.9 Final Tie-InTest. Each joint in the final connection between the new work and the existing system shall be leak-tested with the gas ofsystem designation at the normal operating pressure by means of a leak dctcctant that is safe for use with oxygen and does not contain ammonia.[NFPA 99:5.1.12.4.9.2] 1324.5.9.1 Vacuum Joints. Vacuum joints shall be tested using an ultrasonic leak detector or other means that will allow detection of leaks in an active vacuum system. [NFPA 99:5.1.12.4.9.3] 1324.5.9.2 Pressure Gases. For pressure gases, immediately after the final brazed connection is made and leak-tested, an outlet in the new piping and an outlet in the existing piping that arc immediately downstream from the point or area of intrusion shall be purged in accordance with the applicable requirements of Section 1324.5.8. [ NFPA 99:5.1.12.4.9.4] 1324.5.9.3 Positive Pressure Gases. Before the new work is used for patient care, positive pressure gases shall he tested for operational pressure and gas concentration in accordance with Section 1324.5.10 and Section 1324.5.11 . [NFPA 99:5.1. 12.4.9.5] 1324.5.9.4 Permanent Records. Permanent records of these tests shall he maintained in accordance with NFPA 99. [ NFPA 99:5.1.12 4 9.6] 1324.5.10 Operational Flow Pressure Drop Test. Operational flow pressure drop tests shall be performed at each station outlet/inlet or terminal where the user makes connections and disconnections. [NFPA 99: 5.1.12.4.10] 1324.5.10.1 Medical-Surgical Vacuum Inlets. Medical-surgical vacuum inlets shall draw 3 SCFM (85 Nl/min) without reducing the vacuum pressure below 12 inch (305 mm) gauge 1 IgV at any adjacent| station inlet. [NFPA 99:5.1.12.4.10.4] 1324.5.10.2 Oxygen and Medical Air Outlets. Oxygen and medical air outlets serving Category 1 space shall allow a transient flow rate of 6 SCFM (170 SLPM) for 3 seconds. [NFPA 99:5.LI2.4.10.5] 1324.5.11 Medical Gas ConcentrationTest. After « purging each system with the gas of system designation, the following shall be performed: (1) Each pressure gas source and outlet shall be analyzed for concentration of gas, by volume. ( 2) Analysis shall be conducted with instruments designed to measure the specific gas dispensed. (3) Allowable concentrations shall be as indicated in Table 1324,5.1L [NFPA 99:5 l .12.4. 11] » i » » i i »i TABLE 1324.5.11 GAS CONCENTRATIONS [NFPA 99:5.1.12.4.11] « MEDICAL GAS CONCENTRATION Oxygen USP >99% oxygen »l Oxygen 93 USP Nitrous oxide USP >90% oxygen <96% >99% nitrous oxide Nitrogen NF <1% oxygen or >99% nitrogen Medical air USP 19.5% - 23.5% oxygen Other gases Named gases by ± I %, or per specification »i Part III-Category 2 Piped Gas and Vacuum Systems. »1 1325.0 Category 2 Piped Gas and Vacuum Systems.| 1325.1 General. Category 2 piped gas or piped vacuum sys-| tern requirements shall be permitted when all of the follow- ^ ing criteria arc met: (1) Only moderate sedation:minimal sedation, as defined in Chapter 2; or no sedation is performed. Deep sedation and general anesthesia shall not be permitted . (2) The loss of the piped gas or piped vacuum systems is likely to cause minor injury to patients,staff, or visitors. »1 242 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 1325.13 Performance Criteria and Testing gory 2 (Gas, Medical-Surgical and Vacuum).Category 2 systems shall comply with Section 1324.0. [NFPA 99:5.2.12] (3) The facility piped gas or piped vacuum systems arc Cateintended for Catcgoiy 2 patient care space as defined in Chapter 2.[NFPA 99:5.2.1.2] 1325.2 Nature of Hazards of Gas and Vacuum Systems. The requirement of Section 1307.2 shall apply to the nature of hazards of gas and vacuum systems. [ NFPA 99:5.2.2] 1325.3 Central Supply Systems. Category 2 systems shall comply with Section 1307.3 through Section 1309.13. [NFPA 99:5.2.3.4] » 1325.4 Category 2 Medical Air Supply Systems. Category 2 systems shall comply with Section 1310.0 through Section 1311.6. except as follows: (1) Medical air compressors, dryers, attcrcoolcrs, filters, and regulators shall be permitted to be simplex. (2) The faci lity staff shall develop their emergency plan to deal with the loss of medical air. [NFPA 99:5.2.3.5] 1325.5 Oxygen Concentrators. Oxygen supply systems using concentrators shall be permitted to consist of two sources, one of which shall be a cylinder header with sufficient cylinder connections for one average day' s supply. [NFPA 99:5.2.3.6] » 1325.6 Category 2 Medical-Surgical Vacuum. Category 2 systems shall comply with Section 1312.0 through Section 1313.5, except as follows: (1) Medical-surgical vacuum systems shall be permitted to be simplex. |(2) The facility stai : shall develop their emergency plan to deal with the loss of medical-surgical vacuum. [NFPA 99:5.2.3.7] 1325.7 Valves. Category 2 systems shall comply with Section 1314.0 through Section 1314.12.1.[NFPA 99:5.2.4] 1325.8 Station Outlets and Inlets. Category 2 systems shall comply with Section 1315.0. [NFPA 99:5.2.5] 1325.9 Pressure and Vacuum Indicators. Category 2 systems shall comply with Section 1316.2. [NFPA 99:5.2.8] yy 11325.10 Warning Systems (Category 2). Warning systems associated with Category 2 systems shall provide the master, area, and local alarm functions of a Category l system as required in Section 1317.0, except as follows: (1) Warning systems shall be permitted to be a single alarm panel. (2) The alarm panel shall be located in an area of continuous surveillance while the facility is in operation. (3) Pressure and vacuum switches/sensorsshall be mounted at the source equipment with a pressure indicator at the master alarm panel. [NFPA 99:5.2.9J 1325.11 Category 2 Distribution. Level 2 systems shall complvwith Section 1318.0 through Section 1323.12. [NFPA 99:5.240] 1325.12 Labeling and Identification. Category 2 systems shall comply with Section L 323. L 3 through Section 1323.15. [ NFPA 99:5.2. 11] Part IV -Category 3 Piped Gas and Vacuum Systems. 1326.0 Category 3 Piped Gas and Vacuum Systems.| 1326.1 General. Category 3 piped gas and vacuum systems shall be permitted when all of the following criteria arc met: (1) Only moderate sedation; minimal sedation, as defined in Chapter 2; or no sedation is performed. Deep sedation and general anesthesia arc not performed. (2) The loss of the piped gas and vacuum systems is not likely to cause injury to patients, statY, or visitors, but can cause discomfort. (3) The facility piped gas and vacuum systems are intended for Category 3 or Category 4 patient care rooms as defined in Chapter 2. [NFPA 99:5.3.1.2] 1326.2 Nature of Hazards of Gas and Vacuum Systems. The requirement of Section 1307.2 shall apply to the nature of hazards of gas and vacuum systems. [NFPA 99:5.3.2] 1326.3 Medical Air Supply Systems. Category 3 systems shall comply with Section 1310.0 through Section 1311.6, except as follows: (1) Medical air compressors, dryers, after coolers, filters, and regulators shall be permitted to be simplex. (2) The facility staff shall develop their emergency plan to deal with the loss of medical air.[NFPA 99:5.3.3.5] 1326.4 Oxygen Central Supply Systems Using Concentrators. Category 3 oxygen supply systems using concentratorsshall be permitted to consist of two sources, one of which shall be a cylinder header with sufficient cylinder connections tor one average day s supply^ . [NFPA 99:5.3.3.6] 1326.5 Medical-Surgical Vacuum. Category 3 systems shall comply with Section 1312.0 through Section 1313.5, except as follows: (1) Medical-surgical vacuum systems shall be permitted to be simplex. (2) The facility staff shall develop their emergency plan to deal with the loss of medical-surgical vacuum. [NFPA 99:5.3.3.7] 1326.6 Valves. Category 3 systems shall comply with Section 1314.0. [NFPA 99:5.3.4] 1326.7 Station Outlets and Inlets. Category 3 systems shall comply with Section 1315.0. [NFPA 99:5.3.5] 1326.8 Pressure and Vacuum Indicators. Category 3 systems shall comply with Section 1316.2. [NFPA 99:5.3.8] 1326.9 Warning Systems. Warning systems associated with Category 3 systems shall provide the master, area, and local alarm functions of a Category 1 system as required in Section 1317.0, except as follows: I 2021 UNIFORM PLUMBING CODE 243
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS ( 1 ) Warning systems shall be permitted to be a single alarm panel. (2) The alarm panel shall be located in an area of continuous surveillance while the facility is in operation. (3) Pressure and vacuum switches/sensorsshall be mounted at the source equipment with a pressure indicator at the master alarm panel. [NFPA 99:5.3.9] 1326.10 Distribution. Category 3 systems shall comply with Section 1318.0 through Section 1323.12. [NFPA 99:5.3.10] 1326.11 Labeling and Identification. Category 3 systems shall comply with Section 1323.13 through Section 1323.15. [NFPA 99:5.3.11] (a) Oxygen main line pressure low. (b) Oxygen main line pressure high. (c) Oxygen changeover to secondary bank or about to changeover (if automatic). (d) Nitrous oxide main line pressure low. (e) Nitrous oxide main line pressure high. (f) Nitrous oxide changeover to secondary bank or about to changeover (if automatic). (5) Audible and noncancclablc alarm visual signals shall indicate if the pressure in the main line increases or decreases 20 percent from the normal operating pressure. (6) Visual indications shall remain until the situation that caused the alarm is resolved. (7) Pressure switchcs/scnsors shall be installed downstream of any emergency shutoff valves and any other shutoff valves in the system and shall cause an alarm for the medical gas if the pressure decreases or increases 20 percent from the normal operating pressure. (8) A cancelable audible indication of each alarm condition that produces a sound at the alarm panel shall reinitiate the audible signal if another alarm condition occurs while the audible signal is silenced. [NFPA 99:15.4.2.10] 1327.4 Initial PressureTest. Each section of the piping in positive-pressure gas systems and copper vacuum systems shall be pressure tested. Plastic vacuum and plastic scavenging piping shall not be pressure tested. [NFPA 99: 15.4.7.4.4.1] 1327.4.1 PressureTest. Initial pressure tests shall be conducted as follows: After blowdown of the distribution piping (2) After installation of station outlet/inlet rough-in assemblies (3) Prior to the installation of components of the distribution piping system that would be damaged by the test pressure ( e g., pressure/vacuum alarm devices, pressure/vacuum indicators, and line pressure relief valves) [NFPA 99:15.4.7.4.4.2] 1327.4.2 Source Shutoff Valve. The source shutoff valve shall remain closed during the pressure tests. [NFPA 99:15.4.7.4.4.3] 1327.4.3 Test Pressure. The test pressure for oxygen and nitrous oxide piping shall be 1,5 times the system operating pressure but not less than a gauge pressure of 150 psi (1035 kPa).[NFPA 99:15.4.7.4.4.4] 1327.4.4 Examine for Leaks. The test pressure shall be maintained until each joint has been examined for leakage by means of a leak dctcctant that is safe for use with oxygen and docs not contain ammonia. [NFPA 99:15.4.7.4.4.5] 1327.4.5 Leaks Located. Any leaks shall be located, repaired (if permitted ), or replaced (if required ) by the installer, and retested. [NFPA 99:15.4.7.4.4.6] 1327.5 Maximum CopperTube Support Spacing. The maximum support spacing for copper tube shall be in accordance with Table 1327.5. [NFPA 99:15.4.5.6.5] Part V -Dental Gas and Vacuum Systems. i 1327.0 Dental Gas and Vacuum Systems. 1327.1 General. Dental gas and vacuum systems shall comply with this code and Nl PA 99. 1327.2 Emergency Shutoff Valves {Oxygen and Nitrous Oxide). Emergency shutoff valves shall be provided in accordance with the following: (1) Where a central medical gas supply is remote from a single treatment facility, the main supply line shall be provided with an emergency shutoff valve located in the single treatment facility so as to be accessible from all use-point locations in an emergency. |(2) Where a central medical gassupply system supplies two treatment facilities, each facility shall be provided with an emergency shutoff valve located in that treatment facility so as to be accessible from all use-point locations in an emergency. (3) Emergency shutoff valves shall be labeled to indicate the gas controlled by the shutoff valve and shall shut off only the gas to the treatment facility that they serve. |(4) A remotely activated shutoff vuh e at a gas supply manifold shall not be used for emergency shutoff. For clinical purposes, such a remote valve actuator shall not fail-close in the event of loss of electric power. Where remote actuators arc the type that fail-open, it shall be mandatory that cylinder shutoff valves be closed whenever the system is not in use. [NFPA 99:15.4.2.6.1 - 15.4. 2.6.4.2] }} 1327.3 Warning Systems (Oxygen and Nitrous Oxide). Category 2 warning systemsshall comply with Section 1325.10 except as follows: ( 1 ) Warning systems shall be permitted to be a single alarm panel. (2) The alarm panel shall be located in an area of continuous surveillance while the facility is in operation. (3) Pressure and vacuum switches/sensorsshall be mounted at the source equipment with a pressure indicator at the master alarm panel. (4) Warning systems for medical gas systems shall provide the following alarms: » 0) i i 244 2021 UNIFORM PLUMBING CODE
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS 132774Test Pressure. Test pressures shall be 20 per- KK cent above the normal system operating line pressure. [NFPA 99:15.4.7.4.6.5] 132775 Change inTest Pressure. At the conclusion of the tests, there shall be no change in the test pressure except that attributed to specific changes in ambient tern peraturc.[NFPA 99:15.4.7.4.6.6] 1327.76 Leaks. Any leaksshall be located, repaired (if (( permitted ), or replaced (if required) by the installer, and retested. [NEPA 99:15.4.7.4.6.7] 1327.8 Verifier Operational Pressure Test. Operational pressure testsshall be performed at each station outlet or terminal where the user makes connections and disconnections. [NFPA 99:15.4.7.5.8.1] 1327.8.1 Test Gas. Tests shall be performed with the gas of system designation. [NFPA 99:15.4.7.5.8.2] 13278.2 Medical Gas Outlets. All medical gas outlets with a gauge pressure of 50 psi (345 kPa), including oxygen and nitrous oxide,shall deliver 1.8 standard cubic feet per minute (SCI M) (50 SLPM) with a pressure drop of not more than 5 psi (34 kPa) and static pressure of 50 psi (345 kPa) to 55 psi (379 kPa). [NFPA 99:15.4.7.5.8.3] TABLE 1327.5 MAXIMUM COPPER TUBE SUPPORT SPACING [NFPA 99: TABLE 15.4.5.6.5] I HANGER SPACING (feet) PIPE SIZE DNS (NPS %) (Vs of an inch O.D. j 5 (NPS Vs) DNIO (Vi of an inch O.D. j 6 DNI 5 (NPS Vi) (Vs of an inch O. D. j 6 DN20 (NPS Vi) (Vs of an inch O. D. j 7 ( I v* DN25 (NPS 1 ) of an inch O.D.) 8 1 ( « NPS I %) (IV* DN32 of an inch O.D.) 9 DN40 and (NPS FA) (IV* of an inch O.D.) 10 larger Vertical risers, all sizes, every floor, hut not to exceed: 15 For SI units: I inch = 25 mm, 1 foot = 304.8 mm 13276 Maximum Plastic Pipe Support Spacing. The maximum support spacing for plastic pipe shall be in accordance with Table 1327.6. [NFPA 99:15.4.5.6.6] » TABLE 13276 MAXIMUM PLASTIC PIPE SUPPORT SPACING [NFPA 99:TABLE 15.4.5.6.6] HANGER SPACING (feet) PIPE SIZE (NPS Vi ) (Vs of an inch O.D.) (NPS VA) (VK of an inch O.D.) (NPS 1 ) (1 ] /s of an inch O.D.) (NPS IV) ( IV of an inch O.D.) (NPS IVT ( IV ofan inch O.D.) (NPS 2) (2V ofan inch O.D.) DNI 5 4 DN20 DN25 4 4.33 DN32 4.33 DN40 DN50 4.66 4.66 DN65 and (NPS 2V) (2V ofan inch O.D.) 5 larger Vertical risers, all sizes, every floor, but not to exceed: 10 For SI units: I inch = 25 mm, 1 foot = 304.8 mm » 13277 Standing Pressure Tests for Oxygen and Nitrous Oxide Piping. After successful completion of the initial pressure tests in Section 1327.4, the gas distribution piping shall be subject to a standing pressure test. [ N I P A 99:15.4.7.4.6.1] 1327.71 Tests Required. Tests shall be conducted after the final installation of station outlet valve bodies, faceplates, and other distribution system components (c.g., pressure alarm devices, pressure indicators, line pressure relief valves, manufactured assemblies, and hoses).[NFPA 99: 15.4.7.4.6.2] 1327.72 Source Valve. The source valve shall be closed during this test. [NFPA 99:15.4.7.4.6.3] 1327.73 Piping Systems. The piping systemsshall be subjected to 24-hour standing pressure tests using oilfree, dry nitrogen NF. [NI PA 99:15.4.7.4.6.4] » » » 2021 UNIFORM PLUMBING CODE 245
J 246 2021 UNIFORM PLUMBING CODE
CHAPTER 14 FIRESTOP PROTECTION 1401.0 General. 1401.1 Applicability. Piping penetrations of required fireresistance-rated walls, partitions, floors, floor/cciling assemblies, root?ceiling assemblies, or shaft enclosures shall be protected in accordance with the requirements of the building code, and this chapter. 1404.6 Sleeves. Where sleeves are used, the sleeves shall be securely fastened to the fire-resistance-rated assembly. The ( inside) annular space between the sleeve and the penetrating item and the (outside) annular space between the sleeve and the fire-resistance-rated assembly shall be firestopped in accordance with this chapter. 1405.0 Noncombustible Piping Installations. 1405.1 General Requirements. Noncombustiblc piping installations shall be protected in accordance with the appropriate fire resistance rating requirements in the building code that list the acceptable area, height, and type of construction for use in specific occupancies to ensure compliance and integrity of the fire-resistance rating prescribed. 1405.2 Fire-Resistance Rating. Where penetrating a fireresistance-rated wall, partition,floor, floor-ceiling assembly, roof-ceiling assembly, or shaft enclosure, the fire-resistance rating of the assembly shall be restored to its original rating. Exceptions: (1) Concrete, mortar, or grout shall be permitted to be used to fill the annular spaces around cast-iron, copper, copper alloy, or steel piping that penetrates concrete or masonry fire-resistant-rated assemblies. The nominal diameter of the penetrating item shall not exceed 6 inches ( 150 mm), and the opening size shall not exceed 144 square inches (0.093 nr). The thickness of concrete, mortar, or grout shall be the full thickness of the assembly or the thickness necessary to provide a fire-resistance rating not less than the required fire-resistance rating of the assembly penetrated. (2) The material used to fill the annular space shall prevent the passage of flame and hot gases capable of igniting cotton waste tor the time period equivalent to the fireresistance rating of the assembly, where tested to standard^ ) referenced in Section 1405.3. 1405.3 Firestop Systems. Penetrations shall be protected by an approved penetration firestop system installed as tested in accordance with ASTM El 19, ASTM L814, UL 263, or UL 1479 with a positive pressure differential of not less than 0.01 of an inch of water (0.002 kPa). Systems shall have an F rating of not less than 1 hour but not less than the required fire-resistance rating of the assembly being penetrated. Systems protecting floor penetrations shall have a T rating of not less than 1 hour but not less than the required fire-resistance rating of the floor being penetrated. Floor penetrations contained within the cavity of a wall at the location of the floor penetration do not require a T rating. No T rating shall be required for floor penetrations by piping that is not in direct contact with combustible material. 1405.4 Connections. Where piping penetrates a rated assembly, the combustible piping shall not connect to noncombustiblc piping unless it is capable of being demonstrated 1402.0 Construction Documents. 1402.1 Penetrations. Construction documents shall indicate with sufficient detail how penetrations of fire-resistancerated assemblies shall be firestopped prior to obtaining design approval. 1403.0 Installation. 1403.1 Materials. Firestop systems shall be installed in accordance with this chapter, the building code, and the manufacturer's installation instructions. 1404.0 Combustible Piping Installations. 1404.1 General Requirements. Combustible piping installations shall be protected in accordance with the appropriate fire resistance rating requirements in the building code that list the acceptable area, height, and type of construction for use in specific occupancies to assure compliance and integrity of the fire resistance rating prescribed. 1404.2 Fire-Resistance Rating. Where penetrating a fireresistance-rated wrall, partition, floor, floor-ceiling assembly, roof-ceiling assembly, or shaft enclosure, the fire-resistance rating of the assembly shall be restored to its original rating. 1404.3 Firestop Systems. Penetrations shall be protected by an approved penetration firestop system installed as tested in accordance with ASTM El 19, ASTM Etf 14, UL 263, or UL 1479 with a positive pressure differential of not less than 0.01 of an inch of water (0.002 kPa). Systems shall have an F rating of not less than 1 hour but not less than the required firercsistancc rating of the assembly being penetrated. Systems protecting floor penetrations shall have a T rating of not less than l hour but not less than the required fire-resistance rating of the floor being penetrated . Floor penetrations contained within the cavity of a wall at the location ofthe floor penetration do not require a T rating. No T rating shall he required for floor penetrations by piping that is not in direct contact with combustible material. 1404.4 Connections. Where piping penetrates a rated assembly, the combustible piping shall not connect to noncombustible piping unless it is capable of being demonstrated that the transition is in accordance w ith Section 1404.3. 1404.5 Insulation and Coverings. Insulation and coverings on or in the penetrating item shall not he permitted unless the specific insulating or covering material has been tested as part of the penetrating firestop system. 2021 UNIFORM PLUMBING CODE 247
FIRESTOP PROTECTION that the transition is in accordance with the requirements of Section 14053. 1405.5 Unshielded Couplings. Unshielded couplings shall not be used to connect noncombustiblc piping unless it is capable of being demonstrated that the fire-resistive integrity of the penetration is maintained . 1405.6 Sleeves. Where sleeves arc used, the sleeves shall be securely fastened to the fire-resistance-rated assembly. The (inside) annular space between the sleeve and the penetrating item and the (outside) annular space between the sleeve and the tire-resistance-rated assembly shall be fircstoppcd in accordance with this chapter. 1405.7 Insulation and Coverings. Insulation and coverings on or in the penetrating item shall not be permitted unless the specific insulating or covering material has been tested as part of the penetrating fircstop system. 1406.0 Required Inspection. 1406.1 General. Prior to being concealed, piping penetrations shall be inspected by the Authority Having Jurisdiction to verify compliance with the fire-resistance rating prescribed in the building code. 1406.2 Examination. The Authority Having Jurisdiction shall conduct a thorough examination of sufficient representative installations, including destructive inspection, to provide verification ofsatisfactory compliance with this chapter, the appropriate manufacturer' s installation instructions applied by the installer, construction documents, specifications. and applicable manufacturer s product information. 1406.3 Penetrations. The Authority Having Jurisdiction shall determine the type,size, and quantity of penetrations to be inspected . 1406.4 Field Installations. The Authority Having Jurisdiction shall compare the field installations with the documentation supplied by the installer to determine the following: (1) The required F ratings (1 hour, 2 hour, 3 hour, or 4 hour) and T ratings (0 hour, 1 hour, 2 hour, 3 hour, or 4 hour) of the penetration fircstop systems arc at least the same as the hourly rating of the assembly being penetrated . (2) The penetrating fircstop system includes the penetrating item as documented through testing of the systems conducted by an independent testing agency. (3) The penetrating firestop system is installed as tested . 243 2021 UNIFORM PLUMBING CODE
CHAPTER 15 ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1501.0 General. 1501.1 Applicability. The provisions of this chapter shall apply to the construction, alteration, and repair of alternate water source systems for nonpotablc applications. 1501.1.1 Allowable Use of Alternate Water. Where approved or required by the Authority Having Jurisdiction, alternate water sources [reclaimed (recycled) water, gray water, and on-site treated nonpotablc water] shall be permitted to be used instead of potable water for the applications identified in this chapter. 1501.2 System Design. Alternate water source systems shall be designed in accordance with this chapter by a licensed plumbing contractor or a registered design professional. Components, piping, and fittings used in any alternate water source system shall be listed. Exceptions: (1) A registered design professional is not required to design gray water systems having a maximum discharge capacity of 250 gallons per day (gal/d) (0.011 L/s) for single family and multi-family dwellings. (2) A registered design professional is not required to design an on-site treated nonpotable water system for singlefamily dwellings having a maximum discharge capacity of 250 gal/d (0.011 L/s). 1501.3 Permit. It shall be unlawful for a person to construct, install, alter, or cause to be constructed, installed, or altered an alternate water source system in a building or on a premise without first obtaining a permit to do such work from the Authority Having Jurisdiction. 1501.4 Component Identification. System components shall be properly identified as to the manufacturer. 1501.5 Maintenance and Inspection. Alternate water source systems and componentsshall be inspected and maintained in accordance with Section 1501.5. 1 through Section 1501.5.3. 1501.5.1 Frequency. Alternate water source systems and components shall be inspected and maintained in accordance with Table 1501.5 unless more frequent inspection and maintenance arc required by the manufacturer. 1501.5.2 Maintenance Log. A maintenance log for gray water and on-site treated nonpotablc water systems is required to have a permit in accordance with Section 1501.3 and shall be maintained by the property owner and be available for inspection. The property owner or designated appointee shall ensure that a record of testing, inspection, and maintenance in accordance with Table 1501.5 is maintained in the log. The log will indicate the frequency of inspection and maintenance for each system. 1501.5.3 Maintenance Responsibility. The required maintenance and inspection of alternate water source systems shall be the responsibility of the property owner unless otherwise required by the Authority Having Jurisdiction. TABLE 1501.5 MINIMUM ALTERNATE WATER SOURCETESTING, INSPECTION, AND MAINTENANCE FREQUENCY DESCRIPTION MINIMUM FREQUENCY Inspect and clean filters and screens, and replace (where necessary). Every 3 months Inspect and verify that disinfection, filters, and water quality treatment devices and systems are operational and maintaining minimum water quality requirements as determined by the Authority Having Jurisdiction. In accordance w ith manufacturer ' s instructions, and the Authority Having Jurisdiction. Inspect pumps and verify operation. Inspect valves and verify operation. Inspect pressure tanks and verify operation. Clear debris from and inspect storage tanks, locking devices, and verify operation. Inspect caution labels and marking. Inspect and maintain mulch As needed to maintain mulch basins for gray water irrigation depth and prevent ponding and systems. After initial installation and every 12 months thereafter mf After initial installation and every 12 months thereafter After initial installation and every 12 months thereafter o ' After initial installation and every 12 months thereafter After initial installation and every 12 months thereafter mf runoff Cross-connection inspection and test* After initial installation and every 12 months thereafter mf * The cross-connection test shall be performed in the presence of the Authority Having Jurisdiction in accordance with the requirements of this chapter. 1501.6 Operation and Maintenance Manual. An operation and maintenance manual for gray water and on-sitc treated water systems required to have a permit in accordance with Section 1501.3 shall be supplied to the building owner by the system designer.The operation and maintenance man- 1 ual shall include the following: (1) Detailed diagram of the entire system and the location of system components. (2) Instructions for operating and maintaining the system. (3) Details on maintaining the required water qualify tor onsite nonpotablc water systems. (4) Details on deactivating the system for maintenance, repair, or other purposes. 2021 UNIFORM PLUMBING CODE 249
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1502.3 Annual Cross-Connection Inspection and Testing. An initial and subsequent annual inspection and test shall be performed on both the potable and alternate water source systems. The potable and alternate water source system shall be isolated from each other and independently inspected and tested to ensure there is no cross-connection in accordance with Section 1502.3. 1 through Section 1502.3.4. 1502.3.1 Visual System Inspection. Before commencing the cross-connection testing, a dual system inspection shall be conducted by the Authority Having Jurisdiction and other authorities having jurisdiction as follows: (1) Meter locations of the alternate water source and potable water lines shall be checked to verify that no modifications were made and that no cross-connections are visible. (2) Pumps and equipment, equipment room signs and exposed piping in equipment room shall be checked. (3) Valvesshall be checked to ensure that the valve lock seals are still in place and intact. Valve control door signs shall be checked to verity that no signs have been removed . 1502.3.2 Cross-Connection Test. The procedure for determining cross-connection shall be followed by the applicant in the presence of the Authority Having Jurisdiction and other authorities having jurisdiction to deter- mine whether a cross-connection has occurred asfollows: (1) The potable water system shall be activated and pressurized . The alternate watersource system shall be shut down, depressurized, and drained . (2) The potable water system shall remain pressurized for a minimum period specified by the Authority Having Jurisdiction while the alternate watersource system is empty. The minimum period the alternate water source system isto remain depressurized shall be determined on a case-by-case basis, taking into account the size and complexity of the potable and the alternate water source distribution systems, but in no ease shall that period be less than 1 hour. (3) The drain on the alternate water source system shall be checked for flow during the test and fixtures, potable and alternate water source, shall be tested and inspected for flow. Flow from an alternate water source system outlet indicates a cross-connection. No flow from a potable water outlet shall indicate that it is connected to the alternate water source system. (4) The potable water system shall then be depressurized and drained. (5) The alternate water source system shall then be activated and pressurized. (6) The alternate watersource system shall remain pressurized for a minimum period specified by the Authority Having Jurisdiction while the potable water system is empty. The minimum period the potable water system is to remain depressurized shall be determined on a casc-by-casc basis, but in no ease shall that period be less than 1 hour. (5) Applicable testing, inspection, and maintenance frequencies in accordance with Table 1501.5. (6) A method of contacting the manufacturcr(s). 1501.7 Minimum Water Quality Requirements. The minimum water quality for alternate water source systems shall meet the applicable water quality requirements for the intended application as determined by the Authority Having Jurisdiction. In the absence of water quality requirements, for on-site treated nonpotablc systems, the water quality requirements of NSF 350 shall apply. The EPA/625 R-04/108 contains recommended water reuse guidelinesto assist regulatory agencies to develop, revise, or expand alternate water source water quality standards. Exception: Water treatment is not required for gray water used for subsurface irrigation. 1501.8 Material Compatibility. Alternate water source systems shall be constructed of materials that are compatible with the type of pipe and fitting materials, water treatment, and water conditions in the system. 1501.9 Commercial, Industrial,and Institutional Restroom Signs. A sign shall be installed in restrooms in commercial, industrial, and institutional occupancies using reclaimed (recycled) water and on-site treated water, for water closets, urinals, or both. Each sign shall contain Vi of an inch (12.7 mm) letters of a highly \ isible color on a contrasting background . The location of the sign(s) shall be such that the sign(s) arc visible to users.The location of the sign(s) shall be approved by the Authority Having Jurisdiction and shall contain the following text: TO CONSERVE WATER, THIS BUILDING USES * * TO FLUSH TOILETS AND URINALS. 1501.9.1 Equipment Room Signs. Each room containing reclaimed (recycled ) water and on-site treated water equipment shall have a sign posted in a location that is visible to anyone working on or near nonpotable water equipment with the following wording in 1 inch (25.4 mm) letters: CAUTION: NONPOTABLE * * , DO NOT DRINK. DO NOT CONNECT TO DRINKING WATER SYSTEM, NOTICE: CONTACT BUILDING MANAGEMENT BEFORE PERFORMING ANY WORK ON THIS W ATER SYSTEM, * *Shall indicate RECLAIMED (RECYCLED) WATER or ON-SITE TRLATED WATER, accordingly. 1501.10 System Controls. Controlsfor pumps, valves, and other devices that contain mercury that come in contact with alternate water source water supply shall not be permitted. 1502.0 Inspection and Testing. 1502.1 General. Alternate water source systems shall be inspected and tested in accordance with Section 1502,2 through Section 1502,3,4. 1502.2 Supply System Inspection and Test. Alternate water source systems shall be inspected and tested in accordance with this code for testing of potable water piping. 250 2021 UNIFORM PLUMBING CODE
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1502.5.1 General. An abandoned system or part thereof covered under the scope of this chapter shall be disconnected from remaining systems, drained, plugged, and capped in an approved manner. 1502.5.2 Underground Tank. An underground water storage tank that has been abandoned or otherwise discontinued from use in a system covered under the scope of this chapter shall be completely drained and filled with earth,sand, gravel, concrete, or other approved material or removed in a manner satisfactory to the Authority Having Jurisdiction. 1502.6 Sizing. Unless otherwise provided for in this chapter. alternate water source piping shall be sized in accordance with Chapter 6 for sizing potable water piping. (7) Fixtures, potable, and alternate water source shall be tested and inspected for flow. Flow from a potable water system outlet indicates a cross-connection. No flow from an alternate watersource outlet will indicate that it is connected to the potable water system. (8) The drain on the potable water system shall be checked for flow during the test and at the end of the test. (9) Where there is no flow detected in the fixtures which would indicate a cross-connection, the potable water system shall be repressurized. 1502.3.3 Discovery of Cross-Connection. If a cross-connection is discovered, the following procedure, in the presence of the Authority Having Jurisdiction, shall be activated immediately: (1) The alternate water source piping to the building shall be shutdown at the meter, and the alternate water source riser shall be drained. (2) Potable water piping to the building shall be shutdown at the meter. (3) The cross-connection shall be uncovered and disconnected . (4) The building shall be retested in accordance with Section 1502.3. 1 and Section 1502.3.2. (5) The potable water system shall be chlorinated with 50 parts-pci-million (ppm) chlorine for 24 hours. (6) The potable water system shall be flushed after 24 hours, and a standard bacteriological test shall be performed. Where test results arc acceptable, the potable water system shall be permitted to be recharged. 1502.3.4 Annual Inspection. An annual inspection of the alternate v. ater source system, following the procedures listed in Section 1502.3. 1 shall be required . Annual cross-connection testing, following the procedures listed in Section 1502.3.2 shall be required by the Authority Having Jurisdiction, unless site conditions do not require it. In no event shall the test occur less than once in 4 years. Alternate testing requirements shall be permitted by the Authority Having Jurisdiction. 1502.4 Separation Requirements. Underground alternate water source service piping other than gray water shall be separated from the building sewer in accordance with this code. Treated nonpotable water pipesshall be permitted to be run or laid in the same trench as potable water pipes with a 12 inch (305 mm) minimum vertical and horizontal separation where both pipe materials are approved for use within a building. Where horizontal piping materials do not comply with this requirement, the minimum separation shall be increased to 60 inches (1524 mm). The potable water piping shall be installed at an elevation above the treated nonpotable water piping. 1502.5 Abandonment. Alternate water source systems that arc no longer in use or fail to be maintained in accordance with Section 1501.5 shall be abandoned. Abandonment shall comply with Section 1502.5. 1 and Section 1502.5.2. 1503.0 Gray Water Systems. 1503.1 General. The provisions of this section shall apply to the construction, alteration, and repair of gray water systems. 1503.2 System Requirements. Gray water shall be permitted to be diverted away from a sewer or private sewage disposal system, and discharge to a subsurface irrigation or subsoil irrigation system. I ’he gray water shall be permitted to discharge to a mulch basin for single-family and multi-family dwellings. Gray water shall not be used to irrigate root crops or food crops intended for human consumption that comes in contact with soil. 1503.2.1 Surge Capacity. Gray water systems shall be designed to have the capacity to accommodate peak flow rates and distribute the total amount of estimated gray water on a daily basis to a subsurface irrigation field, subsoil irrigation field, or mulch basin without surfacing, ponding, or runoff. A surge tank is required for systems that are unable to accommodate peak flow rates and distribute the total amount of gray water by gravity1 drainage. The water discharge for gray water systems shall be determined in accordance with Section 1503.8.1 or Section 1503.8.2. 1503.2.2 Diversion. The gray water system shall connect to the sanitary drainage system downstream of fixture traps and vent connections through a gray water diverter valve.The gray water diverter valve shall comply with 1APMG PS 59 and be installed in an accessible location and clearly indicate the direction of flow. 1503.2.3 Backwater Valves. Gray water drains subject to backflow shall be provided with a backwater valve so located as to be accessible tor inspection and maintenance. 1503.2.4 Rainwater Diversion Valves. Rainwater diversion valves ranging from 6 inches (150 mm) to 12 inches (300 mm) in diameter shall comply with 1APMO 1GC 352. Valves shall be accessible and include a filter located upstream of the valve when required. 1503.3 Connections to Potable and Reclaimed (Recycled) Water Systems. Gray water systems shall have no direct connection to a potable water supply, on-site treated nonpotable water supply, or reclaimed (recycled ) water sys2021 UNIFORM PLUMBING CODE 251
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1503.6 Prohibited Location. Where there is insufficient lot area or inappropriate soil conditions for adequate absorption to prevent the ponding, surfacing, or runoff of the gray water, as determined by the Authority Having Jurisdiction, no gray water system shall be permitted . A gray water system is not permitted on a property in a geologically sensitive area as determined by the Authority Having Jurisdiction. 1503.7 Drawings and Specifications. The Authority Having Jurisdiction shall require the following information to he included with or in the plot plan before a permit is issued for a gray water system, or at a time during the construction thereof: (1) Plot plan drawn to scale and completely dimensioned, showing lot lines and structures, direction and approximate slope of surface, location of present or proposed retaining walls, drainage channels, w? ater supply lines. w? ells, paved areas and structures on the plot, number of bedrooms and plumbing fixtures in each structure, location of private sewage disposal system and expansion area or building sewrcr connecting to the public sewer, and location of the proposed gray water system. (2) Details of construction necessary to ensure compliance writh the requirements of this chapter, together writh description of the complete installation, including installation methods, construction, and materials in accordance writh the Authority Having Jurisdiction. (3) Details for holding tanksshall include dimensions, structural calculations, bracings, and such other pertinent data as required. (4) A log of soil formations and ground water level as determined by test holes dug in proximity to proposed irrigation area, together with a statement of wratcr absorption characteristics of the soil at the proposed site as determined by approved percolation tests. Exception: The Authority Having Jurisdiction shall permit the use of Table 1504.2 instead of percolation tests. (5) Distance between the plot and surface w? atcrs such as lakes, ponds, rivers or streams, and the slope of the plot and the surface water, wherein close proximity. 1503.8 Procedure lor Estimating Gray Water Discharge. Gray water systems shall be designed to distribute the total amount of estimated gray water on a daily basis. The water discharge for gray water systems shall be determined in accordance with Section 1503.8,1 or Section 1503.8.2. 1503.8.1 Single Family Dwellings and Multi-Family Dwellings. The gray w ater discharge for single family and multi-family dwellings shall be calculated by wrater use records, calculations of local daily per person interior water use, or the following procedure: ( 1) The number of occupants of each dwelling unit shall be calculated as follows: terns. Potable, on-site treated nonpotablc, or reclaimed (recycled ) water is permitted to be used as makeup water for a nonpressurized storage tank provided the connection is protected by an air gap in accordance w ith this code. 1503.4 Location. No gray water system or part thereof shall be located on a lot other than the lot that is the site of the building or structure that discharges the gray water, nor shall a gray w ater system or part thereof be located at a point having less than the minimum distances indicated in Table 1503.4. TABLE 1503.4 LOCATION OF GRAY WATER SYSTEM7 SUBSURFACE AND SURGETANK SUBSOIL IRRIGATION FIELD AND MULCH BED (feet) MINIMUM HORIZONTAL DISTANCE IN CLEAR REQUIRED FROM (feet) 2-’ w Building structures ' Property line adjoining private property 5 5* Water supply wells4 50 100 Streams and lakes4 50 5(P Sewage pits or cesspools 5 5 a full Sewage disposal field 1 '- 1 5 4“ Septic tank 0 5 On-site domestic wrater service line 5 5 Pressurized public water main 7 10 10 For SI units: I foot = 304.8 mm Notts: 1 Including porches and steps, whether covered or uncovered, breezeways, roofed carports, roofed patios, carports, covered walks, covered driveways, and similarstructures or appurtenances. I The distance shall be permitted to he reduced to 0 feet for aboveground tanks where first approved by the Authority Having Jurisdiction. Reference to a 45 degree (0.79 rad) angle from the foundation. " Where special hazards are involved, the distance required shall be increased as directed by the Authority Having Jurisdiction. These minimum clear horizontal distances shall apply between the irrigation or disposal field and the ocean mean higher high tide line. II Add 2 feet (610 mm) for each additional foot of depth more than I foot ( 305 mm) below the bottom of the drain line. For parallel construction or crossings, approval by the Authority Having Jurisdiction shall be required. s The distance shall be permitted to be reduced to I feet (457 mm) for drip and mulch basin irrigation systems. 4 The distance shall be permitted to be reduced to 0 feet for surge tanks of 75 gallons (284 L) or less. Where irrigation or disposal fields arc installed in the sloping ground, the minimum horizontal distance between a part of the distribution system and the ground surface shall be 15 feet (4572 mm). i 5 7 1503.5 Plot Plan Submission. No permit for a gray water system shall be issued until a plot plan w ith data satisfactory to the Authority Having Jurisdiction has been submitted and approved . First bedroom 2 occupants Each additional bedroom l occupant 252 2021 UNIFORM PLUMBING CODE
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS (2) The estimated gray water flows of each occupant shall be calculated as follows: The tank shall be protected against sewer line backflow by a backwater valve installed in accordance with this code. ( 9) Surge tanksshall be installed on dry. level, well-compacted soil where underground or on a level 3 inch (76 mm) thick concrete slab where aboveground . (10) Surge tanks shall be anchored to prevent against overturning where installed aboveground. Underground tanks shall be ballasted, anchored, or otherwise secured, to prevent the tank from floating out of the ground where empty. The combined weight of the tank and hold down system shall meet or exceed the buoyancy forces of the tank. 1503.9.2 Gray Water Pipe and Fitting Materials. Aboveground and underground building drainage and vent pipe and fittings for gray water systems shall comply with the requirements for aboveground and underground sanitary building drainage and vent pipe and fittings in this code.These materialsshall extend not less than 2 feet (610 mm) outside the building. 1503.9.3 Subsoil Irrigation Field Materials. Subsoil irrigation field piping shall be constructed of perforated high-density polyethylene pipe, perforated ABS pipe, perforated PVC pipe, or other approved materials, provided that sufficient openings arc available for distribution of the gray water into the trench area. Material, construction, and perforation of the pipe shall be in accordance with the appropriate absorption field drainage piping standards and shall be approved by the Authority Having Jurisdiction. 1503.9.4 Subsurface Irrigation Field and Mulch Basin Supply Line Materials. Materialsfor gray water piping outside the building shall be polyethylene or PVC. Drip feeder lines shall be PVC or polyethylene tubing. 1503.9.5 Valves. Valves shall be accessible. 1503.9.6 Trap. Gray water piping discharging into the surge tank or having a direct connection to the sanitary drain or sewer piping shall be downstream of an approved water seal type trap(s). Where no such trap(s) exists, an approved vented running trap shall be installed upstream of the connection to protect the building from possible waste or sewer gases. 1503.9.7 Backwater Valve. A backwater valve shall be installed on gray water drain connections to the sanitary drain or sewer. Showers, bathtubs, and lavatories 25 gallons (95 L) per day/occupant Laundry 15 gallons (57 L) per day/occupant (3) The total number of occupants shall be multiplied by the applicable estimated gray water discharge as provided above and the type of fixtures connected to the gray water system. 1503.8.2 Commercial, Industrial, and Institutional Occupancies. The gray water discharge for commercial, industrial, and institutional occupancies shall be calculated by utilizing the procedure in Section 1503,8.1, water use records or other documentation to estimate gray water discharge. 1503.9 Gray Water System Components. Gray water system components shall comply with Section 1503.9 . 1 through Section 1503.9.7. 1503.9.1 Surge Tanks. Where installed, surge tanks shall be in accordance with the following: ( 1 ) Surge tanks shall be constructed of solid, durable materials not subject to excessive corrosion or decay and shall be watertight. Surge tanks constructed of steel shall be approved by the Authority Having Jurisdiction, provided such tanks are in accordance with approved applicable standards. (2) Each surge tank shall be vented in accordance with this code.The vent size shall be determined based on the total gray water fixture units as outlined in this code. (3) Each surge tank shall have an access opening with lockable gasketed covers or approved equivalent to allow for inspection and cleaning. (4) Each surge lank shall have its rated capacity permanently marked on the unit. Also, a sign stating GRAY WATER, DANGER shall be permanently marked on the holding tank. (5) Each surge tank shall have an overflow drain. The overflow drains shall have permanent connections to the building drain or building sewer, upstream of septic tanks. The overflow drain shall not be equipped with a shutoff valve. (6) The overflow drain pipesshall not he less in size than the inlet pipe. Unions or equally effective fittingsshall be provided for piping connected to the surge tank. (7) Surge tank shall be structurally designed to withstand anticipated earth or other loads. Surge tank covers shall he capable of supporting an earth load of not less than 300 pounds per square foot (lb/ft3 ) (1465 kg/m2 ) where the tank is designed for underground installation. (8) W here a surge tank is installed underground, the system shall he designed so that the tank overflow will gravity drain to the existing sewer line orseptic tank. UNSAFE W ATER 1504.0 Subsurface Irrigation System Zones. 1504.1 General. Irrigation or disposal fields shall be permitted to have one or more valvcd zones. Each zone shall he of a size to receive the gray water anticipated in that zone. 1504.2 Required Area of Subsurface Irrigation Fields, Subsoil Irrigation Fields, and Mulch Basins. The minimum effective irrigation area of subsurface irrigation fields, subsoil irrigation fields, and mulch basins shall be determined by Table 1504.2 for the type of soil found in the excavation, based upon a calculation of estimated gray water 2021 UNIFORM PLUMBING CODE 253
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1504.5.3 Filter. Not less than 140 mesh (105 microns) filter with a capacity of 25 gallons per minute ( gpin ) (1.58 L/s), or equivalent shall be installed. Where a filter backwash is installed, the backwash and flush discharge shall discharge into the building sewer or private sewage disposal system. Filter backwash and flush water shall not be used. 1504.5.4 Emitter Size. Emitters shall be installed in accordance with the manufacturer's installation instructions. Emitters shall have a flow path of not less than 1200 microns(p) (1200 pm) and shall not have a coefficient of manufacturing variation (Cv) exceeding 7 percent. irrigation system design shall be such that emitter flow variation shall not exceed 10 percent. 1504.5.5 Number of Emitters, flic minimum number of emitters and the maximum discharge of each emitter in an irrigation field shall be in accordance with Table 1504.5.5. 1504.5.6 Controls. The system design shall provide user controls, such as valves,switches, timers, and other controllers, to rotate the distribution of gray water between irrigation zones. 1504.5.7 Maximum Pressure. Where pressure at the discharge side of the pump exceeds 20 pounds-forcc per square inch (psi) (138 kPa), a pressure-reducing valve able to maintain downstream pressure not exceeding 20 psi (138 kPa ) shall be installed downstream from the pump and before an emission device. discharge under Section 1503.8. For a subsoil irrigation field, the area shall be equal to the aggregate length of the perforated pipe sections within the valvcd zone multiplied by the width of the proposed subsoil irrigation field. 1504.3 Determination of Maximum Absorption Capacity. The irrigation field and mulch basin size shall be based on the maximum absorption capacity of the soil and determined using Table 1504.2. For soils not listed in Table 1504.2, the maximum absorption capacity for the proposed site shall be determined by percolation tests or another method acceptable to the Authority Having Jurisdiction. A gray water system shall not be permitted, where the percolation test shows the absorption capacity of the soil is unable to accommodate the maximum discharge of the proposed gray water irrigation system. 1504.4 Groundwater Level. No excavation tor an irrigation field, disposal field, or mulch basin shall extend within 3 feet (9 L 4 mm) vertical of the highest known seasonal groundwater level, nor to a depth where gray water contaminates the groundwater or surface water. The applicant shall supply evidence of groundwater depth to the satisfaction of the Authority Having Jurisdiction. TABLE 1504.2 DESIGN OF SIX TYPICAL SOILS MINIMUM SQUARE FEET OF IRRIGATION ABSORPTION CAPACITY IN GALLONS PER SQUARE FOOT OF IRRIGATION/ LEACHING AREA FOR A 24-HOUR PERIOD MAXIMUM AREA PER 100 GALLONS OF ESTIMATED GRAY WATER DISCHARGE PER DAY TYPE OF SOIL TABLE 1504.5.5 SUBSURFACE IRRIGATION DESIGN CRITERIA FOR SIXTYPICAL SOILS Coarse sand or gravel tar Fine sand 20 5.0 MINIMUM NUMBER OF EMITTERS PER GALLON OF ESTIMATED GRAY WATER DISCHARGE PER DAY* (gallons per day) 25 4.0 MAXIMUM EMITTER DISCHARGE (gallons per day) Sandy loam 40 2.5 TYPE OF SOIL Sandy clay 60 1.7 Clay with considerable sand or gravel 90 1 . 1 Sand 1.8 0.6 Clay with small Sandy loam 1.4 0.7 amounts of sand or gravel 120 0.8 Loam 1.2 0.9 Clay loam 0.9 1 . 1 For SI units: I square foot = 0.0929 m2 , I gallon per day = 0.000043 L/s Silty day 0.6 1.6 Clay 0.5 2.0 For SI units: 1 gallon per day = 0.000043 L/s * file estimated gray water discharge per day shall be determined in accordance with Section 1503.8 of this code. 1504.5 Subsurface and Subsoil Irrigation Field Design and Construction. Subsurface and subsoil irrigation field design and construction shall be in accordance with Section 1504.5.1 through Section 1504.7.3. Where a gray water irrigation system design is predicated on soil tests, the subsurface or subsoil irrigation field or mulch basin shall be installed at the same location and depth as the tested area. 1504.5.1 Subsurface Irrigation Field. A subsurface irrigation field shall comply with Section 1504.5.2 through Section 1504.5.7. 1504.5.2 Minimum Depth. Supply piping, including drip feeders, shall he not less than 2 inches (51 mm) below finished grade and covered with mulch or soil. 1504.6 Mulch Basin Design and Construction. A mulch basin shall comply with Section 1504.6. 1 through Section 1504.6.4. 1504.6.1 Single Family and Multi-Family Dwellings. The gray water discharge to a mulch basin is limited to single family and multi-family dwellings. 1504.6.2 Size. Mulch basins shall be of sufficient size to accommodate peak flow rates and distribute the total amount of estimated gray water on a daily basis without 254 2021 UNIFORM PLUMBING CODE
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1504.8 Gray Water System Color and Marking Information. Pressurized gray water distribution systems shall be identified as containing nonportable water in accordance with Section 60 L .3 ofthis code. 1504.9 Other Collection and Distribution Systems. Other collection and distribution systems shall be approved by the local Authority Having Jurisdiction, as allowed by Section 301.3 of this code. 1504.9.1 Higher Requirements. Nothing contained in this chapter shall be construed to prevent the Authority Having Jurisdiction from requiring compliance with higher requirements than those contained herein, where such higher requirements arc essential to maintaining a safe and sanitary condition. 1504.10 Testing. Building drains and vents for gray water systems shall be tested in accordance with this code. Surge tanks shall be filled with water to the overflow line prior to and during the inspection. Scams and joints shall be left exposed, and the tank shall remain watertight. A flow test shall be performed through the system to the point of gray water discharge. Lines and components shall be watertight up to the point of the irrigation perforated and drip lines. 1504.11 Maintenance. Gray water systems and components shall be maintained in accordance with Table 1501.5. surfacing, ponding or runoff. Mulch basins shall have a depth of not less than 10 inches(254 mm) below finished grade. The mulch basin size shall be based on the maximum absorption capacity of the soil and determined using Table 1504.2. 1504.6.3 Minimum Depth. Gray water supply piping, including drip feeders, shall be not less than 2 inches(51 mm) below finished grade and covered with mulch. 1504.6.4 Maintenance. The mulch basin shall be maintained periodically to retain the required depth and area, and to replenish the required mulch cover. 1504.7 Subsoil Irrigation Field. Subsoil irrigation fields shall comply with Section 1504.7. 1 through Section 1504.7.3. 1504.7.1 Minimum Pipe Size. Subsoil irrigation field distribution piping shall be not less than 3 inches (80 mm) diameter. 1504.72 Filter Material and Backfill. Filter material, clean stone, gravel, slag, or similar material acceptable to the Authority Having Jurisdiction, varying in size from % of an inch (19.1 mm) to 2' /2 inches (64 mm) shall be placed in the trench to the depth and grade in accordance with Table 1504.7.3. The perforated section of subsoil irrigation field distribution piping shall be laid on the filter material in an approved manner. The perforated section shall then be covered with filter material to the minimum depth in accordance with Table 1504.7.3. The filter material shall then be covered with porous material to prevent the closure of voids with earth backfill. No earth backfill shall be placed over the filter material cover until after inspection and acceptance. 1504.7.3 Subsoil Irrigation Field Construction. Subsoil irrigation fields shall be constructed in accordance with Table 1504.7.3. Where necessary on sloping ground to prevent excessive line slopes, irrigation lines shall be stepped. The lines between each horizontal leaching section shall be made with approved watertight joints and installed on the natural or unfilled ground. 1505.0 Reclaimed (Recycled) Water Systems. 1505.1 General. The provisions of this section shall apply to the installation, construction, alteration, and repair of reclaimed (recycled) water systems intended to supply uses such as water closets, urinals, trap primers for floor drains and floor sinks, aboveground and subsurface irrigation, industrial or commercial cooling or air conditioning and other uses approved by the Authority Having Jurisdiction. 1505.2 Permit. It shall be unlawful for a person to construct, install, alter, or cause to be constructed, installed, or altered a reclaimed (recycled) water system within a building or on premises without first obtaining a permit to do such work from the Authority Having Jurisdiction. 1505.2.1 Plumbing Plan Submission. No permit for a reclaimed (recycled) water system shall be issued until complete plumbing plans, with data satisfactory to the Authority Having Jurisdiction, have been submitted and approved. 1505.3 System Changes. No changes or connectionsshall be made to cither the reclaimed (recycled ) water system or the potable water system within site containing a reclaimed (recycled) water system without approval by the Authority Having Jurisdiction. 1505.4 Connections to Potable or Reclaimed (Recycled) Water Systems. Reclaimed (recycled ) water systems shall have no connection to a potable watersupply or alternate water source system. Potable water is permitted to be used as makeup water for a reclaimed (recycled) water storage tank provided the water supply inlet is protected by an air gap or reduced-pressure principle backflow preventer in accordance with this code. TABLE 1504.7.3 SUBSOIL IRRIGATION FIELD CONSTRUCTION DESCRIPTION MINIMUM MAXIMUM Number of drain lines per valved zone l Length of each perforated line 100 feet Bottom width of trench 12 inches 18 inches Spacing of lines, center to center 4 feet Depth of earth covers of lines 10 inches Depth of filter material cover of lines 2 inches Depth of filter material beneath lines 3 inches 3 inches per 100 feet Grade of perforated lines level level For Si units: 1 inch = 25.4 mm, I foot = 304.8 mm, 1 inch per foot = H3.3 mm/m 2021 UNIFORM PLUMBING CODE 255
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS 1505.5 Initial Cross-ConnectionTest. A cross-connection test is required in accordance with Section 1502.3. Before the building is occupied or the system is activated, the installershall perform the initial cross-connection test in the presence of the Authority Having Jurisdiction and other authorities having jurisdiction.The test shall be ruled successful hy the Authority Having Jurisdiction before final approval is granted. 1505.6 Reclaimed (Recycled) Water System Materials. Reclaimed (recycled ) water supply and distribution system materialsshall comply with the requirements of this code for potable water supply and distribution systems unless otherwise provided for in this section. 1505.7 Reclaimed (Recycled) Water System Color and Marking Information. Reclaimed (recycled) water systems shall have a colored background and marking information in accordance with Section 601.3 of this code. 1505.8Valves. Valves, except fixture supply control valves, shall be equipped with a locking feature. 1505.9 Hose Bibbs. Hose bibbs shall not be allowed on reclaimed (recycled) water piping systems located in areas accessible to the public.Access to reclaimed (recycled) water at points in the system accessible to the public shall be through a quick-disconnect device that differs from those installed on the potable water system. Hose bibbs supplying reclaimed (recycled) water shall be marked with the words: "CAUTION: NONPOTABLE RECLAIMED WATER, DO NOT DRINK,” and the symbol in Figure 1505.9. inches (1524 mm). The potable water piping shall he installed at an elevation above the reclaimed (recycled ) water piping. Reclaimed (recycled ) water pipes laid in the same trench or crossing building sewer or drainage piping shall he installed in accordance with this code for potable water piping. 1505.12 Signs. Signs in rooms and water closet tanks in buildings using reclaimed (recycled) water shall he in accordance with Section 1501.9 and Section 1501.9. 1 . 1505.13 Inspection and Testing. Reclaimed (recycled) water systems shall be inspected and tested in accordance with Section 1502.1. 1506.0 On-Site Treated Nonpotable Water Systems. 1506.1 General. The provisions of this section shall apply to the installation, construction, alteration, and repair of onsite treated nonpotable water systems intended to supply uses such as water closets, urinals, trap primers for floor drains and floor sinks, above and belowground irrigation, and other uses approved by the Authority Having Jurisdiction. 1506.2 Plumbing Plan Submission. No permit for an on-site treated nonpotable water system shall be issued until complete plumbing plans, with data satisfactory to the Authority Having Jurisdiction, have been submitted and approved. 1506.3 System Changes. No changes or connectionsshall be made to cither the on-site treated nonpotable wratcr system or the potable wrater system ’within a site containing an onsite treated nonpotable watersystem without approval by the Authority Having Jurisdiction. 1506.4 Connections to Potable or Reclaimed (Recycled) Water Systems. On-site treated nonpotable water systemsshall have no connection to a potable water supply or reclaimed (recycled) water source system. Potable or reclaimed i recycled ) water is permitted o he used as makeup wrater for a non-pressurized storage tank provided the makeup water supply is protected by an air gap in accordance with this code. 1506.5 Initial Cross-Connection Test. A cross-connection test is required in accordance with Section 1502.3. Before the building is occupied or the system is activated, the installer shall perform the initial cross-connection test in the presence of the Authority Having Jurisdiction and other authorities having jurisdiction. The test shall be ruled successful hy the Authority Having Jurisdiction before final approval is granted. 1506.6 On-Site Treated Nonpotable Water System Materials. On-site treated nonpotable watersupply, and distribution system materialsshall comply with the requirements of this code for potable water supply and distribution systems unless otherwise provided for in this section. 1506.7 On-Site Treated Nonpotable Water Devices and Systems. Devices or equipment used to treat on-site treated nonpotable water to maintain the minimum water quality requirements determined by the Authority Having Jurisdiction shall be listed or labeled (third-party certified) by a listing agency (accredited conformity assessment body) or FIGURE 1505.9 1505.10 Required Appurtenances. The reclaimed (recycled ) water system and the potable water system within the building shall be provided with the required appurtenances (c,g,, valves, air/vaeuum relief valves, etc.) to allow for deactivation or drainage as required for a cross-connection test in accordance with Section 1502.3. 1505.11 Same Trench as Potable Water Pipes. Reclaimed (recycled) water pipes shall be permitted to be run or laid in the same trench as potable water pipes with 12 inches(305 mm) minimum vertical and horizontal separation where both pipe materials are approved for use within a building,Where piping materials do not meet this requirement, the minimum horizontal separation shall he increased to 60 256 2021 UNIFORM PLUMBING CODE
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS approved for the intended application. Devices or equipment used to treat on-site treated nonpotablc water for use in the water closet and urinal flushing,surface irrigation, and similar applications shall comply with NSF 350 or approved by the Authority Having Jurisdiction. 1506.8 On-Site Treated Nonpotable Water System Color and Marking Information. On-site treated water Systems shall have a colored background and marking information in accordance with Section 601.3 of this code. 1506.9 Design and Installation. The design and installation of on-site treated nonpotablc systems shall be in accordance with Section 1506.9. 1 through Section I 506.9.5. 1506.9.1 Listing Terms and Installation Instructions. On-site treated nonpotablc watersystemsshall be installed in accordance with the terms of its listing and the manufacturer’s installation instructions. 1506.9.2 Minimum Water Quality. On-site treated nonpotable watersupplied to toilets or urinals or for other uses in which it is sprayed or exposed shall be disinfected . Acceptable disinfection methods shall include chlorination, ultraviolet sterilization, ozone, or other methods as approved by the Authority Having Jurisdiction. The minimum water quality for on-sitc treated nonpotablc water systems shall meet the applicable water quality requirementsfor the intended applications as determined by the public health Authority Having Jurisdiction. 1506.9.3 Deactivation and Drainage. The on-site treated nonpotablc water system and the potable water system within the building shall be provided with the required appurtenances (e.g., valves, air/vacuum relief valves, etc.) to allow for deactivation or drainage as required for a cross-connection test in accordance with Section 1502.3. 1506.9.4 Near Underground Potable Water Pipe. On-site treated nonpotable water pipes shall be permitted to be run or laid in the same trench as potable water pipes with a 12 inch (305 mm) minimum vertical and horizontalseparation where both pipe materials are approved for use within a building. Where piping materials do not meet this requirement the minimum separation shall be increased to 60 inches (1524 mm). The potable water piping shall be installed at an elevation above the on-sitc treated nonpotablc water piping. 1506.9.5 Required Filters. A filter permitting the passage of particulates no larger than 100 microns (100 pm) shall be provided for on-sitc treated nonpotablc water supplied to water closets, urinals, trap primers, and drip irrigation system. 1506.10 Valves. Valves, except fixture supply control valves, shall be equipped with a locking feature. 1506.11 Signs. Signs in buildings using on-sitc treated nonpotablc water shall comply with Section 1501.9 and Section 1501.9. 1 . 1506.12 Inspection and Testing. On-sitc treated nonpotablc water systems shall be inspected and tested in accordance with Section 1502.1. 2021 UNIFORM PLUMBING CODE 257
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CHAPTER 16 NONPOTABLE RAINWATER CATCHMENT SYSTEMS 1601.0 General. TABLE 1601.5 MINIMUM ALTERNATE WATER SOURCE TESTING, INSPECTION, AND MAINTENANCE FREQUENCY 1601.1 Applicability. The provisions of this chapter shall apply to the installation, construction, alteration, and repair of nonpotablc rainwater catchment systems. 1601.1.1 Allowable Use of Alternate Water. Where approved or required by the Authority Having Jurisdiction, rainw ater shall be permitted to be used instead of potable water tor the applications identified in this chapter. 1601.2 System Design. Rainwater catchment systems shall be designed in accordance with this chapter by a licensed plumbing contractor or registered design professional. Components. piping, and fittings used in a rainwater catchment system shall be listed. Exceptions: ( 1 ) A person registered or licensed to perform plumbing design work is not required to design rainwater catchment systems used for irrigation wath a maximum storage capacity of 360 gallons (1363 L). (2) A person registered or licensed to perform plumbing design work is not required to design rainwater catchment systems for single family dwellings where outlets, piping, and system components arc located on the exterior of the building. 1601.3 Permit. It shall be unlawful for a person to construct, install, alter, or cause to be constructed, installed, or altered a rainwater catchment system in a building or on a premise without first obtaining a permit to do such work from the Authority Having Jurisdiction. Exceptions: ( 1 ) A permit is not required for exterior rainwater catchment systems used for outdoor drip and subsurface irrigation with a maximum storage capacity of 360 gallons (1363 L). (2) A plumbing permit is not required for rainwater catchment systems for single family dwellings where outlets, piping, and system components are located on the exterior of the building. This docs not exempt the need for permits where required for electrical connections, tank supports, or enclosures. 1601.4 Component Identification. System components shall be properly identified as to the manufacturer. 1601.5 Maintenance and Inspection. Rainwater catchment systems and components shall be inspected and maintained in accordance with Section 1601.5.J through Section 1601.5.3. 1601.5.1 Frequency. Rainwater catchment systems and components shall be inspected and maintained in accordance with Table 1601.5 unless more frequent inspection and maintenance arc required by the manufacturer. DESCRIPTION MINIMUM FREQUENCY Inspect and clean filters and screens, and replace (where necessary). Every 3 months Inspect and verify that disinfection, filters, and water quality treatment devices and systems are operational and maintaining minimum wrater quality requirements as determined by the Authority Having Jurisdiction, Inspect and clear debris from rainwater gutters, downspouts, and roof washers. In accordance with manufacturer' s instructions and the Authority Having Jurisdiction. Every 6 months Inspect and clear debris from the roof or another aboveground rainwater collection surfaces. Remove tree branches and vegetation overhanging a roof or other aboveground rainwater collection surfaces. Every 6 months As needed Inspect pumps and verify operation. Inspect valves and verify operation. Inspect pressure tanks and verify operation. Clear debris from and inspect storage tanks, locking devices, and verify operation. After initial installation and every 12 months thereafter After initial installation and every 12 months thereafter After initial installation and every 12 months thereafter r After initial installation and every 12 months thereafter Inspect caution labels and marking. After initial installation and every 12 months thereafter Cross-connection inspection and test* After initial installation and every 12 months thereafter Test water quality of rainwater catchment systems required by Section 1603.5 to maintain a minimum water quality. Every 12 months. After system renovation or repair. * The cross-connection test shall be performed in the presence of the Authority Having Jurisdiction in accordance with the requirements of this chapter. 1601.5.2 Maintenance Log. A maintenance log tor rainwater catchment systems is required to have a permit in accordance with Section 1601.3 and shall be maintained by the property owner and be available for inspection. The property owner or designated appointee shall ensure that a record of testing, inspection, and main2021 UNIFORM PLUMBING CODE 259
NONPOTABLE RAINWATER CATCHMENT SYSTEMS tenancc in accordance with Table 1601.5 is maintained in the log. The log will indicate the frequency ofinspection and maintenance for each system. 1601.5.3 Maintenance Responsibility. The required maintenance and inspection of rainwater catchment systems shall be the responsibility of the property owner unless otherwise required by the Authority Having Jurisdiction. 1601.6 Operation and Maintenance Manual. An operation and maintenance manual for rainwater catchment systems required to have a permit in accordance with Section 1601.3, shall be supplied to the building owner by the system designer. The operating and maintenance manual shall include the following: ( 1 ) Detailed diagram of the entire system and the location of system components. (2) Instructions for operating and maintaining the system. (3) Details on maintaining the required water quality as determined by the Authority Having Jurisdiction. (4) Details on deactivating the system for maintenance, repair, or other purposes. (5) Applicable testing, inspection, and maintenance frequencies in accordance w ith Table 1601.5. (6) A method of contacting the manufacturers). 1601.7 Minimum Water Quality Requirements. The minimum water quality for rainwater catchment systems shall comply writh the applicable water quality requirementsfor the intended application as determined by the Authority Having Jurisdiction. Water quality for nonpotable raimvater catchment systems shall comply with Section 1603.5. Exceptions: ( 1 ) Water treatment is not required for rainwater catchment systems used for aboveground irrigation with a maximum storage capacity of 360 gallons (1363 L ). (2) Water treatment is not required for rainwater catchment systems used for subsurface or drip irrigation. 1601.8 Material Compatibility. Rainwater catchment systems shall be constructed of materials that arc compatible with the type of pipe and fitting materials, water treatment, and water conditions in the system. 1601.9 System Controls. Controls for pumps, valves, and other devices that contain mercury that come in contact with rainwater supply shall not be permitted. 1601.10 Separation Requirements. Underground rainwater catchment service piping shall be separated from the building sewer in accordance with Section 609.2. Treated nonpotable water pipes shall be permitted to be run or laid in the same trench as potable water pipes with a 12 inch (305 mm) minimum vertical and horizontal separation where both pipe materials arc approved for use within a building. Where horizontal piping materials do not meet this requirement, the minimum separation shall be increased to 60 inches (1524 mm). The potable water piping shall be installed at an elevation above the treated nonpotable water piping. 1601.11 Abandonment. Rainwater catchment systems that arc no longer in use, or fail to be maintained in accordance with Section 1601.5,shall be abandoned . Abandonment shall comply with Section 1601.11,1 and Section 1601.11.2. 1601.11.1 General. An abandoned system or part thereof covered under the scope of this chapter shall be disconnected from remaining systems, drained, plugged, and capped in an approved manner. 1601.11.2 UndergroundTank. An underground water storage tank that has been abandoned or othciwisc discontinued from use in a system covered under the scope of this chapter shall be completely drained and filled with earth,sand, gravel, concrete, or other approved material or removed in a manner satisfactory to the Authority Having Jurisdiction. 1601.12 Sizing. Unless othciwisc provided for in this chapter, rainwater catchment piping shall be sized in accordance with Chapter 6 for sizing potable water piping. 1602.0 Nonpotable Rainwater Catchment Systems. 1602.1 General. The installation, construction, alteration, and repair of rainw ater catchments systems intended to supply uses such as water closets, urinals, trap primers for floor drains and floor sinks, irrigation, industrial processes, wrater features, cooling tower makeup and other uses shall be approved by the Authority Having Jurisdiction. Rainwater catchment systems for collecting precipitation from rooftops shall comply with ARCSA/ASPE 63. 1602.2 Plumbing Plan Submission. No permit for a rainwater catchment system shall be issued until complete plumbing plans, with data satisfactory to the Authority Having Jurisdiction, have been submitted and approved. 1602.3 System Changes. No changes or connectionsshall be made to cither the rainwater catchment system or the potable wrater system within a site containing a rainwater catchment system requiring a permit without approval by the Authority Having Jurisdiction. 1602.4 Connections to Potable or Reclaimed (Recycled) i/Vater Systems. Rainwater catchment systems shall have no direct connection to a potable water supply or alternate water source system. Potable or reclaimed (recycled ) water is permitted to be used as makeup water for a rainwater catchment system provided the potable or reclaimed (recycled) water supply connection is protected by an air gap or reduced-pressure principle backflow preventer in accordance with this code. 1602.5 Initial Cross-Connection Test. Where a portion of a rainwater catchment system is installed within a building, a cross-connection test is required in accordance with Section 1605.3. Before the building is occupied or the system is activated, the installer shall perform the initial cross-connection test in the presence of the Authority 1 laving Jurisdiction and other authorities having jurisdiction. The test shall be ruled successful by the Authority Having Jurisdiction before final approval is granted. 1602.6 Sizing. The design and size of rainwater drains, gutters, conductors, and leaders shall comply with Chapter 11 of this code. 260 2021 UNIFORM PLUMBING CODE
NONPOTABLE RAINWATER CATCHMENT SYSTEMS 1603.3 Construction. Rainwater storage tanks shall be constructed of solid, durable materials not subject to excessive corrosion or decay and shall be watertight 1603.4 Rainwater Catchment Collection Surfaces. Rainwater shall be collected from roof surfaces or other manmade, aboveground collection surfaces. 1603.4.1 Other Surfaces. Natural precipitation collectcd from surface water runoff vehicular parking surfaces, or manmade surfaces at or below grade shall be in accordance with the stormwater requirements for on-site treated nonpotablc water systems in Section 1506.0. 1603.4.2 Prohibited Discharges. Overflows and bleed-offpipesfrom roof-mounted equipment and appliances shall not discharge onto roof surfaces that arc intended to collect rainwater without prior approval from I the Authority Having Jurisdiction. I 1603.5 Minimum Water Quality. The minimum water quality for harvested rainwater shall meet the applicable water quality requirements for the intended applications as determined by the Authority' Having Jurisdiction. In the absence of water quality requirements determined by the Authority Having Jurisdiction, the minimum treatment and water quality shall be in accordance with Table 1603.5. Exception: No treatment is required for rainwater used for subsurface or nonsprinkled surface irrigation where the maximum storage volume is less than 360 gallons (1363 L), 1603.5.1Treatment. If the quality ofthe tested water cannot consistently be maintained at the minimum levelsspecified in Table 1603.5, then the system shall be equipped with an appropriate treatment device meeting applicable NSF standards referenced in Chapter 17. 1603.6 Rainwater Storage Tanks. Rainwater storage tanks shall be constructed and installed in accordance with Section 1603,3 and Section 1603,7 through Section 1603,13, 1603.7 Location. Rainwater storage tanks shall be permitted to be installed above or below grade. 1603.8 Above Grade. Above grade, storage tanks shall be of an opaque material, approved for aboveground use in direct sunlight or shall be shielded from direct sunlight. Tanks shall be installed in an accessible location to allow for inspection and cleaning. The tank shall be installed on a foundation or platform that is constructed to accommodate loads in accordance with the building code. 1603.9 Below Grade. Rainwater storage tanks installed below grade shall be structurally designed to withstand anticipated earth or other loads. Holding tank coversshall be capable of supporting an earth load of not less than 300 pounds per square toot (lb/ft2 ) (1465 kg/m2 ) w here the tank is designed for underground installation. Below grade rainwater tanks installed underground shall be provided with manholes. The manhole opening shall be not less than 20 inches(508 mm) in diameter and located not less than 4 inches (102 mm) above the surrounding grade. The surrounding grade shall be sloped away from the manhole. Underground tanksshall be ballasted, anchored,or otherwise secured, to prevent the tank from floating out of the ground w here empty. The combined weight of the tank and hold down system shall meet or exceed the buoyancy force of the tank. 1602.7 Rainwater Catchment System Materials. Rainwater catchment system materials shall comply with Section 1602,7.1 through Section 1602,7.4. 1602.7.1 Water Supply and Distribution Materials. Rainwater catchment water supply and distribution materials shall comply with the requirements of this code for potable water supply and distribution systems unless otherwise provided for in this section, 1602.7.2 Rainwater Catchment System Drainage Materials. Materials used in rainwater catchment drainage systems, including gutters, downspouts, conductors, and leaders shall be in accordance with the requirements of this code for storm drainage. 1602.7.3 StorageTanks. Rainwater storage tanks shall comply with Section 1603.6. 1602.7.4 Collections Surfaces. The collection surface shall be constructed of a hard, impervious material. 1602.8 Rainwater Catchment System Color and Marking Information. Rainwater catchment systems shall have a colored background in accordance with Section 601.3, Rainwater catchment systemsshall be marked, in lettering in accordance with Section 601.3. 3, with the wrords: “CAUI TION: NONPOTABLE RAINWATER, DO NOT DRINK," )) 1602.9 Deactivation and Drainage for Cross-Connection Test. The rainwater catchment system and the potable water system within the building shall be provided with the required appurtenances ( e g., valves, air or vacuum relief valves, etc.) to allow for deactivation or drainage as required for a cross-connection test in accordance with Section 1605,3. 1603.0 Design and Installation. » 1603.1 Rainwater Catchment Systems. The design and installation of nonpotablc rainwater catchment systems shall be in accordance with Section 1603.2 through Section 1603,20. )) 1603.2 Outside Hose Bibbs. Outside hose bibbs shall be allowed on rainwater piping systems. Hose bibbs supplying rainwater shall be marked wnii the words: ' CAUTION: NONPOTABLE RAINWATER, DO NOT DRINK” and in Figure 1603,2. » FIGURE 1603.2 2021 UNIFORM PLUMBING CODE 261
NONPOTABLE RAINWATER CATCHMENT SYSTEMS » 1603.10.1 Overflow Outlet Size. The overflow outlet shall be sized to accommodate the flow of the rainwater entering the tank and not less than the aggregate cross-sectional area of inflow pipes. 1603.11 Opening and Access Protection. Rainwater <X tank openings shall be protected to prevent the entrance of insects, birds, or rodents into the tank. Rainwater tank access openings exceeding 12 inches (305 mm) in diameter shall be secured to prevent tampering and unintended entry by cither a lockable device or other approved method. 1603.12 Marking. Rainwater tanks shall be permanently marked with the capacity and the language: ‘‘NONPOTABLE RAINWATER/ 'Where openings arc provided to allow a person to enter the tank,the opening shall be marked with the following language: ‘ DANGER-CONFINED SPACE. ” 1603.13 Storage Tank Venting, Where venting using drainage or overflow piping is not provided or is considered insufficient, a vent shall be installed on each tank. The vent shall extend from the top of the tank and terminate not less than 6 inches(152 mm) above grade and shall be not less than 1Vi inches (40 mm) in diameter. The vent terminal shall be directed downward and covered with a Vn of an inch (2.4 min) mesh screen to prevent the entry of vermin and insects. 1603.14 Pumps. Pumps serving rainwater catchment sys- (X terns shall be listed. Pumps supplying water to water closets, urinals, and trap primers shall be capable of delivering not less than 15 pounds-force per square inch (psi) (103 kPa) residual pressure at the highest and most remote outlet served. Where the water pressure in the rainwater supply system within the building exceeds 80 psi (552 kPa), a pressure reducing valve reducing the pressure to 80 psi (552 kPa) or less to water outletsin the building shall be installed in accordance with this code. 1603.15 Roof Drains. Primary and secondary roof drains, <X conductors, leaders, and gutters shall be designed and installed in accordance with this code. 1603.16 Water Quality Devices and Equipment. Devices and equipment used to treat rainwater to maintain the minimum water quality requirements determined by the Authority 1 laving Jurisdiction shall be listed or labeled (thirdparty certified ) by a listing agency (accredited conformity assessment body) and approved for the intended application. 1603.17 Freeze Protection. Tanks and piping installed in locations subject to freezing shall be provided with an approved means ot freeze protection. 1603.18 Debris Removal. The rainwater catchment convcyancc system shall be equipped with a debris excluder or ^ other approved means to prevent the accumulation of leaves, needles, other debris and sediment from entering the storage tank. Devices or methods used to remove debris or sediment shall be accessible and sized and installed in accordance with manufacturer's installation instructions. 1603.19 Required Filters. A filter permitting the passage of particulates not larger than 100 microns (100 pm) shall be provided for rainwater supplied to water closets, urinals, trap primers, and drip irrigation system. TABLE 1603.5 MINIMUM WATER QUALITY MINIMUM WATER QUALITY APPLICATION MINIMUM TREATMENT Car washing Debris excluder or other approved means in accordance with Section 1603.18, and 100 microns in accordance with Section 1603.19 for drip irrigation. Debris excluder or other approved means in accordance with Section 1603.18, and 100 microns in accordance with Section 1603.19 for drip irrigation. Debris excluder or other approved means in accordance with Section 1603.18. and disinfection in accordance with Section 1603.16. N/A Subsurface and drip irrigation N/A Spray irrigation where the maximum storage volume is less than 360 gallons N/A Spray irrigation where the maximum storage volume is equal to or more than 360 gallons Escherichia coli: < 100 CFU/100 mL, and Turbidity: < 10 NTU Debris excluder or other approved means in accordance with Section 1603.18. Urinal and water closet flushing, clothes washing, and trap priming Debris excluder or other approved means in accordance with Section 1603.18, and 100 microns in accordance with Section 1603.19. Escherichia coli: < 100 CFU/100 mL, and Turbidity: < 10 Niu " Ornamental fountains and other water features Escherichia coli: < 100 CFU/100 mL, and Turbidity: < 10 Niu " Debris excluder or other approved means in accordance with Section 1603.18. Cooling tower make-up water Debris excluder or other approved means in accordance with Section 1603.18, and 100 microns in accordance with Section 1603.19. Escherichia coli: < 100 CFU/100 mL, and Turbidity: < 10 NTu " For SI units: I micron = 1 p, I gallon = 3.7K 5 L )) 1603.10 Drainage and Overflow. Rainwater storage tanks shall be provided with a means of draining and cleaning. The overflow drain shall not be equipped with a shutoff valve. The overflow outlet shall discharge in accordance with this code for storm drainage systems. Where discharging to the storm drainage system, the overflow drain shall be protected from backflow of the storm drainage system by a backwater valve or other approved method. 262 2021 UNIFORM PLUMBING CODE
NONPOTABLE RAINWATER CATCHMENT SYSTEMS yy 1603.20 Roof Gutters. Gutters shall maintain a minimum slope and be sized in accordance with Section 1103.3. (1) Pumps, equipment, equipment room signs, and exposed piping in an equipment room shall be checked . 1605.3.2 Cross-Connection Test. The procedure for determining cross-connection shall be followed by the applicant in the presence of the Authority Having Jurisdiction and other authorities having jurisdiction to determine whether a cross-connection has occurred asfollows: (1) The potable water system shall be activated and pressurized. The rainwater catchment water system shall be shut down and completely drained. (2) The potable water system shall remain pressurized for a minimum period of time specified by the Authority Having Jurisdiction while the rainwater catchment water system is empty. The minimum period the rainwater catchment water system is to remain depressurized shall be determined on a cascby-case basis, taking into account the size and complexity of the potable and rainwater catchment water distribution systems, but in no case shall that period be less than 1 hour. (3) Fixtures, potable, and rainwater shall be tested and inspected for flow.Flow from a rainwater catchment water system outlet shall indicate a cross-connection. No flow from a potable water outlet shall indicate that it is connected to the rainwater system. (4) The drain on the rainwater catchment water system shall be checked for tlow during the test and at the end of the period. (5) The potable water system shall then be completely drained. (6) The rainwater catchment water system shall then be activated and pressurized. (7) The rainwater catchment water system shall remain pressurized for a minimum period of time specified by the Authority Having Jurisdiction while the potable water system is empty. The minimum period the potable water system is to remain depressurized shall be determined on a case-by-case basis, but in no ease shall that period be less than 1 hour. (8) Fixtures, potable and rainwater catchment, shall be tested and inspected for flow. Flow from a potable water system outlet shall indicate a cross-connection, No flow from a rainwater catchment water outlet shall indicate that it is connected to the potable water system. (9) The drain on the potable water system shall be checked for flow during the test and at the end of the period. (10) Where there is no flow detected in the fixtures which would indicate a cross-connection, the potable water system shall be repressurized . 1605.3.3 Discovery of Cross-Connection. In the event that a cross-connection is discovered, the following procedure, in the presence of the Authority 1 laving Jurisdiction, shall be activated immediately: 1604.0 Signs. 1604.1 General. Signs in buildings using rainwater shall be in accordance with Section 1604.2 and Section 1604.3. 1604.2 Commercial. Industrial, and Institutional Restroom Signs. A sign shall be installed in restrooms in commercial, industrial, and institutional occupancies using nonpotablc rainwater for water closets, urinals, or both, bach sign shall contain Vi of an inch (12.7 mm) letters of a highly visible color on a contrasting background. The location of the sign(s) shall be such that the sign(s) shall be visible to users. The number and location of the signs shall be approved by the Authority Having Jurisdiction and shall contain the following text: TO CONSERVE WATER, THIS BUILDING USES RAINWATER TO FLUSH TOILETS AND URINALS. 1604.3 Equipment Room Signs. Each equipment room containing nonpotablc rainwater equipment shall have a sign posted with the following wording in 1 inch (25,4 mm) letters: CAUTION NONPOTABLE RAINWATER, DO NOT DRINK, DO NOT CONNECT TO DRINKING WATER SYSTEM, NOTICE: CONTACT BUILDING MANAGEMENT BEFORE PERFORMING ANY WORK ON THIS WATER SYSTEM. This sign shall be posted in a location that is visible to |anyone working on or near rainwater equipment. I 1605.0 Inspection and Testing. 1605.1 General. Rainwater catchment systems shall be inspected and tested in accordance with Section 1605.2 and Section 1605,3. 1605.2 Supply System Inspection andTest. Rainwater catchment systemsshall be inspected and tested in accordance with the applicable provisions of this code for testing of potable water and storm drainage systems. Storage tanks shall be filled with w ater to the overflow opening for a period of 24 hours, and during the inspection, or by other means as approved by the Authority Having Jurisdiction, Scams and jointsshall be exposed during the inspection and checked for watertightness. 1605.3 Annual Cross-Connection Inspection and Testing. An initial and subsequent annual inspection and test in accordance with Section 1602,5 shall be performed on both the potable and rainwater catchment water systems. The potable and rainwater catchment water systems shall be isolated from each other and independently inspected and tested to ensure there is no cross-connection in accordance with Section 1605,3.1 through Section 1605,3.4. 1605.3.1 Visual System Inspection. Prior to commencing the cross-connection testing, a dual system inspection shall be conducted by the Authority Having Jurisdiction and other authorities having jurisdiction as follows: 2021 UNIFORM PLUMBING CODE 263