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Published by Summit Refrigeration Group, Inc., 2019-10-30 11:27:51

October 2019_4th Quarter Newsletter

Summit Refrigeration Group, Inc.

From the

Volume 5, Issue 4 - October 2019



PM(s): Mike Conti & Mike Missall
Foreman: Alex Mrotek
General Contractor: Jens Construction
Start-Up Technician(s): Mike Sobczak & Scott Godfrey


This project was originally a specified design, however, it came in over budget. Summit Refrigeration

Group was in the fortunate position to be one of two contractors selected to provide a design build
solution for the central refrigeration system, which will cool the main 18,100sq/ft main freezer to -67°

F and support areas that total approximately 5,500sq/ft with varying temps from +50°F to +15°F.

Our design team went to work with some innovative solutions, all designed with serviceability in mind

considering the environment. We were successful to join the team responsible for what is said to be

the largest -67°F freezer in North America. We don’t know if this is true, but it sounds pretty cool!

Redundancy was on the forefront of the design, considering the temperatures needed. If the system
went down, they couldn’t just move their product to a refrigerated trailer at another refrigerated ware-
house since there aren’t too many -67°F facilities available. Firstly, the design included redundancy in
the coils (one in standby) as well as nitrogen sections on all of the coils in the event that the mechani-
cal refrigeration system went down. Secondly, we have 100% redundancy on the compressors,

pumps and designed bypass piping to allow the redirection of refrigerant if needed.

The design centered around four (4) specialty designed coil rooms that allowed for the coils to be iso-
lated from the main area. This was accomplished by a series of low-temp damper and actuator sys-
tems (we had to heat the actuator housing) that would close and allow the coil to defrost. This also
provided the ability to separate these areas to perform maintenance and service on the coils. If
you’ve ever tried to service anything in -67°F temperatures, you will understand why this is so im-
portant. We worked with Colmac Coil Manufacturing to design the coils to deliver 18.5TR each,

with one coil in standby at all times. The wind chill in the room, with the calculated air velocity at
30mph, is equal to -117°F.

The system was also designed around pumped
ammonia (another challenge at those temps)
and included stainless steel piping, a specialty

steel recirculator and other vessels provided by
Isotherm. When operating at -67°F, pressure
drop in the piping and valve systems have a

huge impact on the system operation. So we
worked with Hantemp Controls on all of the

ultra-low temp valve groups and used motorized
ball valves. Being stainless steel, they met our
design spec and the full port ball valve design

provided extremely low pressure drops. On the
larger isolation valves, Bray stainless butterfly

valves were selected.

The compressors that were selected at 100%
redundancy included two (2) Vilter booster

single screw compressors designed for
-76°F/-20°F, and the high stage with 100%
redundancy included two (2) Vilter high stage

single screw compressors designed for

A BAC evaporative condenser, B&G water

pumps, a Kelvion hot gas/glycol heat
exchanger for the underfloor system, as well as

Hansen Technologies and R/S (Refrigerating
Specialties) valves, balanced out the rest of the

Controlling the humidity in the infiltrating air

helps to minimize defrost and control frost build
up by the entry points to the -67°F area. We
worked with Climate by Design to design and

select three (3) desiccant air handler systems to
provide dehumidification and dry air to the entry

vestibules serving the main freezer and service
corridors to the coil rooms.

We turned to AAIM Controls, a Danfoss Company, to work in depth with us to come up with strategic
programming, monitoring and notification systems to ensure this system would provide years of reliable

operation. A separated power source system was designed to allow for the backup generator to operate
part of the control system that handles the nitrogen back up cooling, as well as maintaining all the life
safety systems

Sourcing some of the specialty items integrated into our system proved to be challenging, however our

Purchasing and PM team came through as usual. Try finding a strobe light to operate if the CO level
rises in a -67°F environment. We actually had to add a heater to that also!

Lastly, a huge ‘Thank You’ to all of the Summit team members who contributed to this unique and

successful project, with a special call out to:

Mike Missall Controls system design and management

Phillip Radtke Lead AutoCAD design development

Alex Mrotek Site Construction Foreman

Mike Sobczak System Commissioning

Scott Godfrey System Commissioning and Head “Critiquer”

Jeff Bull Construction Superintendent

Susan Molkenthen Construction Purchasing and Coordination

Mike Eigner Warehouse and Delivery Manager

Mike Conti Design Engineering


Have you heard?!? Our new website is now up and running! We hope this update will

make it easier for our customers. employees and potential clients to really see where

Summit Refrigeration Group is from, where we are going and that we plan on being at

the center of Industrial Refrigeration for a long time to come! Take a moment to
browse through it if you haven't already and let us know what you think! Your feedback

is important to the success of our new site.


Along with our new website is a new Customer Portal. This is a very user-friendly portal

that we know will be beneficial to everyone. You will be able to access all of your invoices,

work orders, PM Contracts, drawings and much more! Many of our customers are
already logging in and starting to use it. If you would like to get your facility set up on our

portal, contact us today and we will gladly get you logged in for immediate access.

It’s Finally Here! (IIAR 6, Part 1)

August 20th, 2019

We’ve often heard the axiom that “patience is a virtue”. For the ammonia refrigeration industry, our pa-
tience has finally been rewarded with the publication of ANSI/IIAR 6 Standard for Inspection, T esting,
and Maintenance of Closed-Circuit Ammonia Refrigeration Systems. By some estimations, IIAR 6 has

been in development for over 13 years[1]. Countless IIAR Standards Committee meeting debates are
interwoven into the fabric of the final document, which replaces the often cited IIAR Bulletins No. 109 and


In the next several blogs, we’ll explore various aspects of IIAR 6 and offer suggestions on how to comply
with this important standard.

To allay any worry that you might already be “out of compliance” due to requirements in this new stand-

ard, it is worth highlighting that IIAR 6 is a voluntary standard until adopted by an owner or an authority
having jurisdiction (AHJ)[2]. Thankfully, the text of ANSI/IIAR 6 §4.1.3 is consistent with the approach that

we’ve promoted regarding RAGAGEP changes in the past. Facilities need not change their mechanical
integrity RAGAGEP simply because a new standard has been published. However, this standard is the
most current reflection of our industry’s consensus toward inspection, testing, and maintenance (ITM) of

ammonia refrigeration systems so it will be important to monitor how government agencies (e.g. OSHA
and EPA) elect to use the document in enforcement.

IIAR 6 Overview (IIAR 6, Part 2)

September 3rd, 2019

Similar to other IIAR standards, ANSI/IIAR 6 Standard for Inspection, T esting, and Maintenance of
Closed-Circuit Ammonia Refrigeration Systems is divided into several Parts, with each Part containing

multiple Chapters or Appendices. Parts 1-2 are normative, indicating that the content in these sections
is mandatory. Part 3 is informative and therefore intended to be descriptive and non-binding. In the
norma-tive chapters you will notice obligatory words such as must, shall, and will. By contrast, the
informative appendices utilize optional phrases such as should, may, and can. The authors of the
standard selected words carefully and the placement of material in normative versus informative
sections was by no acci-dent.

Part 1 is titled General and lays the foundation of the document by addressing the Purpose, Scope, and
Applicability (Chapter 1), Definitions (Chapter 2), Reference Standards (Chapter 3), and Program Admin-
istration (Chapter 4).

Part 2 is titled Program Requirement and includes chapters that prescribe the minimum inspection, test-

ing, and maintenance (ITM) requirements for various types of equipment. Chapter 5 (General) contains
fundamental material regarding documentation, frequency requirements, and retention of records. This
information is regularly referenced in remaining chapters of Part 2:

• Compressors (Chapter 6)
• Condensers (Chapter 7)
• Refrigerant Pumps (Chapter 8)
• Evaporators (Chapter 9)
• Pressure Vessels (Chapter 10)
• Piping (Chapter 11)
• Safety Systems (Chapter 12)
• Overpressure Protection Devices (Chapter 13)
• Purgers (Chapter 14)
• Ammonia Refrigerant and Secondary Coolants (Chapter 15)
Part 3 is composed of informative appendices. Appendix A “Explanatory Material” contains helpful com-
mentary on many of the normative requirements from Chapters 1-15. Appendix B contains safety check-
lists that are comparable to what had been previously published in IIAR Bulletin No. 109. The checklists
have been modified in a variety of ways to better serve our industry. Appendices C-F contain additional
informative content regarding water contamination, hydraulic shock, risk-based ITM, and non-mandatory

reference standards.

Purpose, Scope, and Applicability (IIAR 6, Part 3)

September 17th, 2019

Chapter 1 of ANSI/IIAR 6 Standard for Inspection, T esting, and Maintenance of Closed-Circuit Ammonia
Refrigeration Systems addresses the Purpose, Scope, and Applicability of the standard.

According to §1.1, the purpose of IIAR 6 is to specify “minimum requirements for inspection, testing, and
maintenance for closed-circuit ammonia refrigeration systems”. Notice that there are no qualifiers for
large or small systems, but rather this succinct statement captures all types and sizes of ammonia
refrigeration systems.

The scope of the standard is clarified in §1.2 to encompass record keeping, inspection, testing, and
maintenance of both ammonia refrigeration systems and their ancillary equipment. The standard is

written to address “equipment that is common to stationary closed-circuit ammonia refrigeration
systems”, but it is expected that most systems will not include each type of equipment that is listed in the
standard. In other words, if a system does not have a specific type of equipment referenced in the
standard, they need not comply with the corresponding section.

The scope of the document is limited in §1.3 by making clear that start-up and decommissioning need
not comply with this IIAR 6 and instead must be conducted in accordance with IIAR Standards
5 and 8 respectively. Additionally, IIAR 6 does not apply to ammonia absorption systems containing 22
lbs or less.

Definitions (IIAR 6, Part 4)

October 1st, 2019

Words matter. Consequently, ANSI/IIAR 6-2019 has introduced thirty-one new definitions in Chapter 2.
Eventually, these definitions will be moved to ANSI/IIAR 1 American National Standard for Definitions
and Terminology Used in IIAR Standards when that document is next revised, but until that time, Chapter
2 is a necessary resource for those wanting to implement IIAR 6.

We’ll look closely at many of the definitions in subsequent blogs as we discuss strategies for implement-
ing an IIAR 6 ITM[1] Program. The complete list of words and terms that are defined in ANSI/IIAR 6 §2.2
are included below:

• alarm message
• automatic record keeping
• brine
• crevice corrosion
• deficiency
• documentation
• emergency shut-off valve
• frequency
• gauge
• heat exchanger
• inspection
• installed
• line corrosion
• maintenance
• manufacturer
• nondestructive testing (NDT)
• non-transfer hose
• operating limits
• predictive maintenance
• qualified inspector
• record keeping
• stationary
• sudden liquid deceleration
• supports
• test
• testing
• transfer hose
• trapped liquid
• vapor-propelled liquid (hydraulic shock, liquid hammer, or surge

Program Administration (IIAR 6, Part 5)

October 15th, 2019

Who is responsible for implementing an IIAR 6 ITM Program at your facility?

§4.1.1 speaks to that very question:

“The owner or owner’s designated representative shall be responsible for overseeing and ensuring that
inspection, testing and maintenance is performed in accordance with the requirements of this standard.”

While the owner or the designated representative is responsible to ensuring that ITM tasks are performed
in accordance with IIAR 6, compliance with the standard is voluntary until either of the following occurs:

1. Authority having jurisdiction (AHJ) adopts the standard; or
2. Owner adopts the standard
Common AHJs include building/fire code officials, OSHA, USEPA, and local enforcement agencies (e.g.
a CUPA in California). There typically isn’t an “official” announcement when an AHJ begins applying a
new standard for issuing citations, so our industry will likely learn how each agency plans to enforce IIAR
6 in the coming months. We advise all facilities to be prepared to defend the basis (RAGAGEP) for each
mechanical integrity (MI) task and task frequency in your PSM program. As stated in Part 1, a facility
need not change RAGAGEPs simply because a new standard has been published. Due to the im-
portance of this particular standard, it would be prudent to perform a gap analysis of existing ITM tasks
against what is contained in IIAR 6 and adjust your MI program accordingly.

If you are like us, you had a great show and met some really awesome people!

Thank you to everyone who visited our booth and made a connection with one or more of
our team members.

As most of you know, Industrial Refrigeration is a relationship driven, specialized industry
that requires a trusted partner you can count on. From designing and engineering, to
building and maintaining your temperature-controlled environment, we are committed to

being that partner you can count on.

Providing reliable, cost effective and efficient design, requires a full understanding of the
current and future needs of your system. Our design process begins by listening to our
clients, to gain the understanding necessary to meet your goals.

Summit Refrigeration Group utilizes a rewarding and open team environment to provide
seamless communication to all integrated design professionals involved. This benefits
you by allowing us to access all of our team members’ various experiences and vast
resources, to ensure that all aspects of design application will be addressed and


If you missed us at the show and would like to find out more,

visit our new website or contact us.

Maintenance is more than just a cost to production. It improves the foundation for a
business’ performance and profitability, affecting everything from safety to plant
productivity and energy efficiency.

Did you know that the following items need to be checked and maintained periodically to
keep them at their optimal running capacity?

• Compressor Vibration Analysis – Bi-Annually

• Compressor Oil Samples & Testing – Bi-Annually

• Compressor Mechanical Integrity - Annually

• Ammonia Sensor Testing & Calibration - Annually

• Ammonia Safety Reliefs – Replace every 5 years

If it’s been a while since you have done any of the above, please contact our

Service Department at (262) 781-5757 to schedule a maintenance service call.

Is your Ammonia Pressure Relief Valve in need of a replacement??

Your pressure relief valves are the most important pieces of safety equipment in your

facility or along your pipeline system. There’s no margin for error. These need to be

replaced every 5 years, because your PRVs need to work — every time!

Contact our Service Department at (262) 781-5757 or visit our

Request a Quote page on our NEW website, to request an obligation-free

Valve Replacement quote.


Mike Conti—October 18

Alex Mrotek—October 29


Jesse Kulis—1 year in October


Summit Refrigeration Group


The Peak of Performance in Industrial Refrigeration

W141 N9501 Fountain Blvd. | Menomonee Falls, WI 53051

Phone: (262) 781-5757 | Fax: (262) 781-5759

PG. 4

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