Rebar work & Pipe Sleeve & Insert inside pier segment with TopColumn Installation Pier SERECT Step 9 Installation Pier SERECT Pour concrete to secure the pier segment and column (top pier).Concrete ( 45 MPa)
Installation Pier SERECT Wire shooting in U-Tendon pipeStressing U-tendon after Concrete Strength = 18 Mpa or moreGrouting and closing the pull head Installation Pier SERECT Finish for Pier Segment work
Installation Pier SERECT
Erection Viaduct Erection Viaduct LGLoa 1 2 Full Span Load Testing
Erection Viaduct LGLoa 1 2 Full Span Load TestingErection Viaduct LGLoa E1 2 Full Span Load Testing
Erection Viaduct 1 2 Full Span Load TestingELGLoa Erection Viaduct 1 2 Full Span Load TestingELGLoa
Erection Viaduct 1 2 Full Span Load TestingELGLoa Erection Viaduct 1 2 Full Span Load TestingELGLoa
Erection Viaduct 1 2 Full Span Load TestingELGLoa Erection Viaduct 1 2 Add extra 10% load (approximate 33.8T) evenly distributed throughout full spanFull Span Load TestingELGLoa
Erection Viaduct LGLoa 1 2 Conclusion :The total suspension weight of deck segment is 338 ton (Excluding the pier segment) and the span is 32.50 m.meet the requirements. The load test is completed after unloading.Full Span Load TestingE Erection Viaduct
Erection Viaduct Erection Pier Segment(advance work)Wet Joint Construction Erection Viaduct Erection
Erection Viaduct Erection P
Preparation SS D2 Setupa clearblockingplanand workarea. Agency telephonenuandrelatedpersons transportpatients or inpersons Withlife-saequipment onthe veDevelopanemergenresponseplan Work safety measWork safety measENDSS D2 TrainingplanTool and machineryusageplan, crane Worker trainingplanfornew ornewlyhiredk id
Example of job hazard analysis to develop preventative and corrective measures (Job Safety Analysis : JSA)Work safety measExample of a job safety inspection record format from Job Safety Analysis (JSA) data.Work safety meas
Work safety measTraining course on work safety for new operators, course on working with cranes (4 operators), andcourse on safety in working at heights.Random alcohol testing and observation for signs of illness before starting work.Work safety meas
Annual physical examination for LGSC employeesWork safety measWork safety measCreate a checklist to check every step of the work, specifying clear acceptance criteria.
Work safety measCheck the operation of the Winch trolley every time before starting use each day.Work safety measLG system operation is checked once a month by LGSC SERVICE team.
Work safety measWinch Trolley Load Test & Issue Document ปจ.1 (every 3 months)Work safety measFinished Deck Protection & Access tower
Work safety measWork safety meas2ⁿᵈ break (Emergency break) In case1st Break 1t Bk
Work safety measControl & Monitoring SystemCCTV (online & real time system)Work safety measControl & Monitoring SystemOperating Control Unit (on site only)
END OF PTH
Mass Rapid Transit Authority of Thailand (MRTA)MRTA’s Construction Safety Practice in Urban Rail Construction Speaker: Benjarat Sreesai - Engineer 7 Construction Management Department 2About SpeakerProfessional Background10+ years of experience in urban rail and infrastructure projects, specializing in construction management, elevated and underground works.Project Experience- MRT Blue line Extension Contract 4, Tha Phra – Lak Song Section (Elevated)- MRT Blue line and SRT Red line Bang Sue Underground Connection (Underground)- MRT Purple line South Contract 3, Phan Fa – Memorial Bridge Section (Underground)- MRT Purple line South Contract 4, Memorial Bridge – Dao Khanong Section (Underground)Education- Master’s Degree in Infrastructure and project development, University of Seoul [2021]- Master’s Degree in Construction Management, King Mongkut's University of Technology Thonburi [- B.Eng. in International and Twinning program in Civil Engineering, King Mongkut's University of Technology Thonburi [2012]BENJARAT SREESAI Engineer 7Construction Management Department 2Mass Rapid Transit Authority of Thailand (MRTA)
\"Why do safety measures matter so in large infrastructure projects?\"9 Categories of Hazardous WorkUnderground, Underwater, Tunnel, and Confined Space WorkWork Involving Vibrating Tools or Machinery1 2 3 4 6 7Scaffolding WorkWork at HeightTraffic Control Excavation WorkWork Near High Voltage Sources8 Lifting Work
PropertyThe PublicMRTA PersonnelSite WorkersPersonnelImpactPotential Impacts May Affect…AgendaPART 1 : MRTA’s Safety FrameworkPART 2 : Elevated Railway SafetyPART 3 : Underground Railway SafetyPART 4 : Key Takeaways and Knowledge Exchange
PART 1 MRTA’s Safety FrameworkPART 1 : MRTA’s Safety Framework• Laws and Regulation/ Safety Structure• Roles and Responsibilities• MRTA’s Construction Safety in PracticalLaws and Regulation/ Safety StructureSafety Laws and RegulationsMinistry of TransportDepartment of Rail TransportMass Rapid Transit Authority of Thailand (MRTA)Safety Committee ConsultantContractorLaws, Regulations, and Standards Applicable to the Project (e.g., OSHA Standards, EIT Standards, Labour Protection Act B.E. 2541 [1998], Occupational Safety, Health and Environment Act B.E. 2554 [2011], Safety Regulations for Underground Metro Construction, and Specific Requirements for Underground Tunnel Construction).Safety StructureOrganizational Structure for Safety in Work OperationsPART 1 : MRTA’s Safety Framework
Roles and ResponsibilitiesPART 1 : MRTA’s Safety FrameworkEmployer (MRTA)ConsultantContractorConstruction Safety in Practical• HAZID, HIRA, JSA methods• Daily toolbox talks & pre-task briefings• Work Permit system• PPE distribution campaigns• Safety awards for zero-accident sites• Regular training refreshersManagement Levels On-site Practical Committee Meeting InspectionReport RecordPART 1 : MRTA’s Safety Framework
Construction Safety in PracticalPART 1 : MRTA’s Safety FrameworkInspection of lifting equipment Check equipment, fire extinguishers and machineryEnsure regular gas monitoring and personnel entry/exit checks in the confined space work area, every dayNew employees Orientation Safety talk & Safety toolbox talkSpecify 4 lifting personnel Day-ShiftOn-site Daily RoutineNight-ShiftWork PermitConstruction Safety in PracticalPART 1 : MRTA’s Safety Framework
Safety RoutineInspection and follow up the safety protocolWeekly Safety Meeting Day Safety Audit with MRTA, PMCSCSafety Patrol by Consultant Night Safety Audit with MRTA, PMCSCVideo Camera Monitoring System at StationConstruction Safety in PracticalPART 1 : MRTA’s Safety Framework14Public SafetyConstruction Safety in PracticalPART 1 : MRTA’s Safety FrameworkCheck traffic signs, lighting along the barriers surrounding the construction areaDay-ShiftProvide all necessary traffic managementNight-Shift
Project Safety ManualConstruction Safety in PracticalPART 1 : MRTA’s Safety FrameworkPART 2 Elevated Railway Safety(Pier & Viaduct Segment Erection)• Key Safety Measures• Special Works for Segment erection • Measure before the Segment Erection• Measure During the ConstructionPART 2: Elevated Railway Safety
Eleveted Construction PART 2: Elevated Railway SafetyPART 2: Elevated Railway SafetyKey Safety MeasuresSafety Training for EmployeesRegular training builds awareness and prevents accidents.Certification for 4 Lifting Supervisor, Signalman, Crane Operator, Slinger.Work at Height ProceduresFollow prescribed safety practices for working at height.PPE ComplianceAll workers must wear proper protective equipment.Traffic ControlTemporary diversion/closure during lifting & installation.Crane OperationsComply with safety measures during crane activities.Material HandlingHandle materials & equipment carefully to prevent falling.
Special Works for Segment erection PART 2: Elevated Railway SafetyTransportation Traffic Diversion Lifting WorkSafety Measure: Preventive & Risk Control for Special Works for Segment erection Prepare an Emergency Response PlanEstablish a Standard for Falling Object Prevention and Prepare a Checklist.Prepare Work Procedures (Job Sequence) to Identify Hazards (JSA) and Develop a Safety Checklist.Prepare a Construction SiteMeasure before the Segment ErectionENDSS SD2SD2SD S7D7SWorker Training planPlanning of Equipment and Machinery Utilization, Compliance with Crane Requirements (Four Key Preparation of Material Safety Training for New Employees or Employees Newly Assigned to Work, in Compliance with Legal Requirements (3-Hour or 6-Hour Program)Occupational Safety for Working at Height, Including Measures for the Prevention of Falling Materials.Pre-Work Safety Orientation (Toolbox Talk) Tailored to the Nature of Activities and Potential Work Hazards.Site PreparationPART 2: Elevated Railway Safety
Permit to Work SystemMeasure During the ConstructionConstruction Activity Workflow (Permit to Work Process)Construction ActivityBefore starting construction activitiesDaily Request Submission Contractor submits a Daily Request to Consultant.Consultant Resident Engineer (RE) reviews and accepts information for approval.If there is no Daily Request (e.g., traffic management, housekeeping, equipment storage), continue.Prepare Permit to Work (PTW)Prepared by ContractorSupervisor.Review PTW Documents• • • If PTW is not issued / incorrect / incomplete Revise & ResubmitIf PTW is approved & complete Start Construction WorkContractor submits PTW record to Google Form.Consultant Follow Up the works under PTW PART 2: Elevated Railway SafetyPermit to Work High-Risk Preventive and Risk Control Score sheetSection 3: Evaluation Scores and Assessment CriteriaSection 2: Completeness Assessment By the ConsultantSection 1: Internal Implementation By the ContractorMeasure During the ConstructionPART 2: Elevated Railway SafetySafety Monitoring During Construction
CCTV (online & real time system)Monitor Panel Function Display (online & real time) Operating Control Unit (on site only)Control & Monitoring SystemMeasure During the ConstructionPART 2: Elevated Railway SafetyPART 3: Underground Railway Safety• Underground construction• Working in Confined spaces• Instrumentation and MonitoringPART 3: Underground Railway Safety
Underground Construction 1.Sub-station2.Grout Plant3.Muck pit4.Crane ( Muck, Segment)5.Segment stock yard6.Cooling towerFlowchart of Procedures and Methods for Tunnel Excavation in Underground Railway ConstructionPART 3: Underground Railway SafetyWhat is confined spaces?“Confined Space” means a space with limited entry and exit, not designed for continuous or routine occupancy as a workplace, and which presents hazardous conditions or contains a dangerous atmosphere. Examples including tunnels, caves, pits, excavations, basements, vaults, oil tanks, fermentation tanks, silos, pipelines, furnaces, vessels, or other similar enclosures.Source: Ministerial Regulation on Confined Spaces – Source: elementsafety.co.ukWorking in Confined spacesPART 3: Underground Railway SafetyChallenges in Underground Works is Working in Confined spaces
Ministerial Regulation on Occupational Safety – 9 Jan 2013Ministerial Regulation on Hazardous Chemicals – 29 Nov 2013Ministerial Regulation on Electrical Safety – 6 Apr 2015Ministerial Regulation on Heat, Light, and Noise – 17 Oct 2016Ministerial Regulation on Confined Spaces – 15 Feb 2019Ministerial Regulation on Underwater Work – 16 Jun 2020Ministerial Regulation on Health Examinations – 5 Oct 2020Ministerial Regulation on Work at Height – 3 Mar 2021Ministerial Regulation on Sitting Workstations – 30 May 2021Ministerial Regulation on Construction Work – 31 May 2021Ministerial Regulation on Service Business Licensing – 26 Nov 2021Ministerial Regulation on Boilers and Pressure Vessels – 4 Nov 2021Ministerial Regulation on Radiation – 3 Dec 2021Ministerial Regulation on Safety Management Systems – 10 Jun 2022Ministerial Regulation on Safety Officer Appointment – 16 Aug 2022Occupational Safety, Health, and Environment Act B.E. 2554 (2011Working in Confined spaces PART 3: Underground Railway SafetyRelevant Ministerial Regulations1️⃣Monitor and evaluate atmospheric conditions. 2️⃣Prepare and implement an emergency plan. 3️⃣Work in confined spaces requires a permit. 4️⃣Provide adequate fire extinguishers. 5️⃣Provide PPE and life-saving equipment. 6️⃣Post 'No Smoking' signs and provide fire suppression equipment. 7️⃣Provide appropriate electrical equipment. Essential Safety Measures for Working in Confined SpacesWorking in Confined spacesPART 3: Underground Railway SafetySafety Measures
Before Entering a Confined Space:A. Hazard assessment and readiness preparationB. Atmospheric testing techniquesC. Use of monitoring instrumentsNormal Work Conditions:B. Atmospheric testing techniquesC. Use of monitoring instrumentsD. Ventilation techniquesE. Use of PPE in confined spacesAbnormal / Hazardous Conditions:B. Atmospheric testing techniquesC. Use of monitoring instrumentsD. Ventilation techniquesE. PPE and protective equipmentF. Immediate cessation of workG. Emergency signal notificationH. Firefighting proceduresI. First aid and initial medical responseJ. Rescue and life-saving operationsEnd of Work:K. Close the Work OrderL. Close the Work PermitSource: National Standard for Inspection and Certification, MTCH Practice for Work in Confined Spaces(พ.ศ. 2561 /A.D. 2018)Implement Corrective ActionCanceledAcceptableUnacceptableSafe Work Procedures in Confined SpacesWorking in Confined spacesPART 3: Underground Railway SafetyConfined Space access card and stickerLine OA for requesting to enter confined space areaConfined space work permitEnsure regular gas monitoring and personnel entry/exit checks in the confined space work area every day Entry/Exit Checked PointPART 3: Underground Railway SafetyWorking in Confined spacesMeasure for Working in Confined spaces
Emergency in Confined SpaceEmergency PreparednessEmergency ProtocolDetected Conditions•Oxygen < 19.5% or > 23.5%•LEL > 10%•Carbon Monoxide > 50 ppmFire in Confined SpaceFire, Explosion, or Gas Leak in Adjacent AreasHazardous Environment –May Cause Entrapment, Burial, or ConfinementEmergency Preparedness Procedures•Establish regulations and procedures for emergency preparedness.•Develop step-by-step emergency response procedures.Emergency Roles & Communication•Assign personnel responsible for emergency monitoring and response.•Compile emergency contact numbers (Command center, hospital, fire department) and evacuation routes.Inspection of Hazardous Areas & Equipment•Inspect high-risk areas (flammable material storage, ignition sources).•Inspect emergency equipment (SCBA, air line system, firefighting system).Emergency Training & Drills•Provide training (firefighting, first aid, rescue operations).•Conduct regular emergency response drills and practice scenarios.PART 3: Underground Railway SafetyWorking in Confined spacesPART 3: Underground Railway SafetyInstrumentation and MonitoringInstrumentation Based on Contract Outline Construction Specifications
PART 3: Underground Railway SafetyInstrumentation and MonitoringInstallation of Instrumentation in Buildings at Risk, Based on Survey Results and Assessment of Construction Impacts on Structures.Installation of Instrumentation to Monitor the Performance of Tunnel Excavation and Underground Structure Works.อาคารที่ไม่มีความเสี่ยงสัญลักษณ์Building w/Risk อาคารที่มีความเสี่ยงBuilding w/o RiskSymbolSurface SettlementConvergence BoltObservation WellHeave StakeSurface SettlementInclinometer Installed in D-WallCombined Inclinometer / Extensometer PiezometerObservation WellVibrating Wire Rebar TransducerPART 3: Underground Railway SafetyInstrumentation and MonitoringTiltmeterBuilding Settlement MarkerGround Settlement MarkerVW Piezometer Combined Inclinometer/Extensometer
PART 3: Underground Railway SafetyInstrumentation and MonitoringSensitive Area InstrumentationInstrumentation for Sensitive AreasBuilding Settlement Maker and Vibration MonitoringSurface Settlement Maker and Combined Inclinometer/ExtensometerReal Time InstrumentsReal Time – Instruments : Sketch of Robotic Total Station LocationReal Time – Instruments : Installation of Wireless Electrolevel Beam= Robotic Total Station = Target PrismPART 3: Underground Railway SafetyInstrumentation and MonitoringDMS – Database Management System
PART 4: Key Takeaways and Knowledge ExchangePART 4: Key Takeaways and Knowledge ExchangeHazards During Daytime Construction Along the RouteTraffic Cones and Temporary BarriersConstruction Warning SignsWarning LightTraffic Diversion Direction SignsTraffic VolunteerKey Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge ExchangeTemporary Walkway
Reduce Hazards from Mud from Construction Work Project Vacuum TruckClean/Wash Vehicle Wheels Before Leaving the Project SiteCover Soil Trucks with Canvas Key Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge ExchangeHazards from On-Site Construction ActivitiesPre-Work Safety Training(Safety Talk)Inspect the Condition of Machinery and Equipment(e.g., Machinery Collapse)Trained and Certified Equipment OperatorKey Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge Exchange
Hazards from Underground Tunnel Construction Worke.g., Confined Spaces and GroundwaterInspectorSafety Regulation SignsAccess Control Card Atmospheric System MonitoringFire ExtinguisherConfined Space Warning SignSmoking Waste Disposal BoxKey Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge ExchangeHazards from Nighttime Work Outside the Construction ZoneTraffic Cones and Temporary BarriersLighting Along Working RouteSafety WatcherWarning LightWork Area LightingConstruction Work Warning SignTraffic Diversion Information SignTraffic Diversion SignKey Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge Exchange
Hazards from Working at HeightGuardrailSafety netToe boarde.g., Falling Objects, Scaffold Collapse, or Falling Cement SlurrySecure the Scaffold to a Stable StructureSafety SignageBlue sheetKey Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge ExchangeGuardrailSafety net Toe boardWork Area LightingSafety netMachinery and Equipment Condition CheckBlue sheetHazards from Launching Girder (LG) and Balanced Cantilever WorkKey Takeaways : MRTA’s Safety PracticalPART 4: Key Takeaways and Knowledge Exchange
Safety CulturePART 4: Key Takeaways and Knowledge Exchange“Safety FirstSafety ALWAYSKnowledge Exchange and SuggestionPART 4: Key Takeaways and Knowledge ExchangeThank You
MRTA Experience Sharing MR. TANAWUT SUBWAREE Email: [email protected] 2022-2023: Master of Science (MSc) Transport Planning (Passed with Merit)Institute for Transport Studies, University of Leeds, United KingdomDissertation Topic: Forecasting the demand, revenue, and costs of a tram or light rail system in Leeds Jun 2008-2013: Bachelor of Engineering (B.Eng) in Electrical EngineeringFaculty of Engineering, Chulalongkorn University, ThailandWork ExperienceJuly 2013 – Dec 2015: Risk Engineer – AXA Insurance PCLJan 2015 – Jun 2017: Engineer (Park & Ride Building and Commercial Area) - Operations Department, Mass Rapid Transit Authority oJun 2017 – Present: Engineer – M&E System Department, Mass Rapid Transit Authority of Thailand Project ExperienceMRT Purple Line North Section - Care of Works (Building Services), Park and Ride Buildings Contract and Operation PhaseMRT Blue Line Extension – T&C and Trial RunningMRT Orange Line – Interface Works, System Requirements, Design and T&C (Ongoing)MRT Purple Line South Section – Interface Works, System Requirements (Ongoing)
Slide Outline Part 2 – Role of M&E in Project LifecyclePart 3 – Technology of Key M&E SubsystemsPart 4 – Case Example: Bangkok MRT ProjectsPart 5 – DiscussionPart 1Introduction and Objectives
Part 1 – Introduction and Objectives• Understand the role and lifecycle of M&E in Bangkok Metro projects• Learn key M&E subsystem technologies used in Bangkok• Share practical experience and lessons learnedPart 1 – Introduction and Objectives• Bangkok rail transit evolution (BTS, MRT, ARL)• MRTA’s role and major lines (Blue, Purple, Orange, Pink, Yellow)• Timeline of development and technology evolution
Bangkok in 19th CenturyThrowbackPaknam Paknam RailwaySRT Railway(to Nakhon Pathom)SRT Railway(to Chachoengsao)SRT Railway(to Mahachai)Don Mueang AirportRattanakosin IslandThonburi Side
Sao Ching Cha (The Giant Swing)Debsirin SchoolWat PhoYaowarat Road-Bangkok in the late 20th Policy Shifting – Tram Scrapped, Highway Expansion
Don Mueang AirportOuter Ring Raod(Kanchanaphisek Road)Inner Ring Raod(Ratchadaphisek Road)SRT Railway(to Nakhon Pathom)SRT Railway(to Chachoengsao)SRT Railway(to Mahachai)Turnout near Bangkok’s City Pillar and Ministry of Defense Utility Works accidentally found old tram track near Chang Tracks forgotten, knowledge buriedwaiting to resurface for the city’s next journey.
The beginning of 21st CenturyThe new era of Bangkok Mass Transit SystemAfter decades of planning, it finally began operation Owner Paid-to-Paid ConnectionLabelling: