E21 - Redacted Sole Source Justification.pdf

MEMORANDUM

Subj: SOLE SOURCE MEMORANDUM TO ACQUIRE HYPERBARIC CHAMBER

HEATING AND COOLING SYSTEM FROM ENGINEERED COOLING SERVICES

1. Identification of the agency and the contracting activity, and specific identification of the document as a “Sole Source Justification.”

This is a sole source justification. Contracting activity is the Naval Sea Systems Command, Naval Surface Warfare Center, Panama City Division (NSWC PCD), 110 Vernon Avenue, Panama City, FL 32407-7001.

2. Nature and/or description of the action being approved.

This action will award a firm fixed price purchase order, on a sole source basis, to ENGINEERED COOLING SERVICES (ECS), CAGE (3CBK2), 2801 N. Davis HWY, Pensacola, FL 32503, to provide hyperbaric chamber test bath heating and cooling system in support of unmanned and manned diving operations, inside the Experimental Diving Facility hyperbaric chambers at NEDU.

3. A description of the supplies or services required to meet the agency’s needs. The contract effort is to acquire the following:

This action will award a firm fixed price purchase order to ENGINEERED COOLING SERVICES to provide Experimental Diving Facility (EDF) hyperbaric chamber test bath heating and cooling system removal and replacement, to include one 4.90-ton air cooled chiller and inline heating systems for the Charlie hyperbaric chamber test bath.

Services Required:

1. Complete on-site meeting with facility personnel to review proposed work

2. Secure power using lock out tag out procedures

3. Coordinate with base personnel for necessary hot work permits

4. Coordinate with onsite and base personnel for location to place dumpster

5. Provide storage tanks, pump and remove existing glycol mixed water for disposal offsite of NSA Panama City

6. Demo out existing chiller and dispose of offsite of NSA Panama City

7. Chill water piping will be demolished and removed in the following areas and dispose of offsite of NSA Panama City

a. Outside building to chiller

b. Inside building to dive chamber

c. Heating circuit piping NOTE: Piping from the chamber penetrator stop valve at the outside of the chamber penetrator and inside the chamber piping will NOT be changed. Piping inside the chamber ark is ¾" single pass.

8. Set up rigging and remove existing chiller and air separator tank for disposal offsite of

NSA Panama City.

9. Set up rigging for new chiller, surge tank (if needed), and new air separator tank installation

10. Replace all supporting brackets as needed inside building and outside chiller deck

11. Provide new mounting hardware for piping supports

12. Install new chill water piping (copper) throughout system with necessary valves:

a. Mechanical hand closed quarter turn type isolation valves shall be installed on Chiller, Expansion Tank, and heater isolation valves will have mechanical hand inlets and outlets to facilitate future maintenance, with like kind to NEDU EDF Alpha and Bravo, sized appropriately for Charlie.

b. Expansion Tank and heater shall have valves that will be automatically controlled through the controls system to keep chilled water separate from heated water.

Recommend the same manufacture as the BAC valves used in NEDU A&B chiller/heater system “Belimo”, sized for C chamber use.

c. Pressure relief will be on the output of the heater and not be isolated from the chill water on the loop, with the relief piped outside of the dive chamber building.

13. Install new chill water piping from chamber isolation valves to where chiller is located including new automatic valve, tanks and circulation pump.

14. All new pressure gauges, pressure taps, and temperature gauges will be provided and installed

15. Pressurize and leak check all new piping

16. All piping will have directional arrows for system flow installed after final insulation, etc., is installed.

17. All valves shall be numerically identified with labels according to NEDU’s preferred numbering scheme.

18. Charge water systems with the appropriate glycol mixture for desired temperature using new glycol, provided by contractor.

19. New insulation to be 2” thick cellular glass on piping, valves and equipment to be insulated with 1” thick flexible elastomeric.

20. Insulate and jacket the piping indoors and outdoors PVC jacket indoors (blue) and

Aluminum jacket outdoors.

21. Modify existing electrical service to support new amp ratings for selected chillers.

22. Install system visual flow indicator near location of that in currently-installed system.

23. Remove and replace chill and heated water pump(s)

24. The circulation pump(s) shall be placed outside and piped accordingly.

25. Modify electrical service for new circulation pump(s) including increased breaker sizing

a. Pump(s) will be set up to run lead lag for performance, if multiple are required.

26. Demo and remove existing inline heater for C chamber.

27. Install new in line electric heater with specifications per vendor provided quote of 26

May 2026 (proposal # Q-09-2025-425429) , using a Chromalox 480, three-phase inline heater, appropriately sized for configuration.

a. Heater will come with new controls systems including BacNet

b. Modify electrical service to accommodate new heater selection

c. Heater will be bypassed when not in use. Expansion tank will be bypassed when heater is in use.

28. Provide and install new air cooled chiller with specifications per vendor provided quote of 26 May 2026 (proposal # Q-09-2025-425429), see below for details, with the Waterside

Evaporator leaving fluid temperature 15°F.

25. Connect new chiller and inline electric heater to new controls system

26. Provide a factory start up and check performance data

27. Provide all close out documents and warranty information on all equipment

28. Provide owner and operating training on new equipment and controls system

a. Contractor shall consult with NEDU personnel regarding preferred settings and operations of control system prior to job completion.

29. Provide all on-site project management of all processes inclusive of removal and installation of systems.

30. Chiller glycol flow rate shall be appropriate for ¾" piping inside the chamber.

3. 2 Controls scope of Service Charlie Chillers:

Contractor shall provide and install BACnet DDC Controls for the Charlie Chiller at NEDU Building 398. This includes the following:

BACnet DDC Controls for One (1) New Chiller serving Ark-C at NEDU Building 398:

1. BACnet IP Controller

2. Start/stop, status, setpoint adjust and BACnet integration to chiller (1); Chiller manufacturer to provide BACnet communication capabilities

3. Two (2) changeover valves with position feedback; Installed by ECS Mechanical –

Recommend Belimo manufactured, sized for C chamber.

4. One (1) Diverting valve with position feedback for chiller; Installed by ECS Mechanical

– Recommend Belimo manufactured, sized for C chamber.

5. NEMA3R Weather Shield enclosure for outdoor valves

6. Start/stop and status for Chilled Water Pump(s)

7. Immersion temperature sensors for Chiller and for Heater (supply and return), total of four (4).

8. Connect controls to new heater for proper control

9. Sequence, Programing and Testing of the Chiller and Heater Controls

Additional Control for Ark-C Temperature Controls Loop:

1. Run status light for new heater

10. Start/stop, status, setpoint adjust and BACnet integration to heater (1); Chiller manufacturer to provide BACnet communication capabilities

11. Auto function valve controls. If in chilling mode: bypasses the heater, enables chiller bypass valve to chiller, tank and pressure tank. If in heating mode: bypasses volume tank, chiller, pressure tank and enables the heater bypass valve to heater.

2. NEMA3R Weather Shield enclosure for outdoor valve

3. Install new Control Valve for Ark-C – Recommend Belimo manufactured, sized for C chamber.

4. High accuracy immersion temperature sensors for Ark-C supply and return (2)

5. Industrial water temperature sensors for High and Low Ark Tank two (2) will be supplied by NEDU as 10 K nominal (ACI A/CP (Type II) wired to a terminal board exterior to the chamber.

6. Sequence, Programing and Testing of the Ark Temperature Loop Controls to include heating systems controls

7. Provide and install current monitoring relay for ark circulation pump, providing control signal to enable chiller. Recommendation same as A&B Chiller system using a DC current sensing relay with input power 0-50vdc (input power supplied by NEDU system), aux power input from BAC system via relay to give premission to the Chiller to operate.

8. Control temperatures:

a. Chiller: 15°F (+/- 2°F, Heater 120° F (+/- 2°F).

b. Chamber water bath: 28°F to 105° F (+/- 1°F).

9. Control display to have an output for a remote touch screen control panel.

Tridium N4 Graphical Webserver and Touchscreen Display:

1. 15” Touchscreen Graphical Display, remote mounted

2. Provide CHW System Graphics, Dashboard, Etc.

3. Unlimited User Client Licenses

4. Set-up Required Schedules, Alarms, Trends, etc.

5. Training and configuration of GUI controls per NEDU’s requirements

This acquisition will be conducted using simplified acquisition procedures with a total estimated value greater than $25,000. The Government’s minimum needs have been verified by the certifying technical and requirements personnel. This memo does not authorize acquisition for other requirements.

4. Identification of the justification rationale and, if applicable, a demonstration of the proposed contractor’s unique qualifications to provide the required supply or service.

10 U.S.C. 2304(c)(1) [10 U.S.C. 3204(a)(1)], Only one responsible source and no other supplies or services will satisfy agency requirements, FAR 6.302-1(a).

10 U.S.C. 2304(c)(1) [10 U.S.C. 3204(a)(1)], Only one responsible source and no other supplies or services will satisfy agency requirements, FAR 6.302-1(a)(2)(iii).

Maintenance of the NEDU hyperbaric dive chamber heating and chilling system and the NEDU Ocean Simulation Facility hyperbaric diving chamber at NEDU, is a highly specialized service.

ECS is the current vendor providing for the NEDU hyperbaric diving chamber heating and cooling systems maintenance needs, and was responsible for the installation of the hyperbaric test bath heating and cooling system for the EDF Alpha and Bravo test chambers, and as such are familiar with the unique requirements of this specialized heating and cooling system. To use another company unfamiliar with the unique requirements for the system capabilities to include size, piping, speed of heating and cooling, maintaining of temperatures, and specialized control systems needed of these heating and cooling systems for providing certification information to NAVSEA 00C regarding diving and evaluation of diver’s life support equipment will compromise overall performance under the demands of the systems to support critical testing protocols on equipment for Fleet divers. Use of another vendor may change or introduce new parameters such as decrease in capability, incompatible components to the current piping systems and hyperbaric chambers that may damage sensitive pressurized equipment, that may be harmful to all diving systems tested and maintained at NEDU, and negatively affect the diving and life support systems these instruments are vital components thereof.

Additionally, use of another vendor will likely compromise the integrity of the integration and compatibility of existing systems; since ECS is responsible for service and maintenance currently under contract at NEDU, they are intimately familiar with the requirements to maintain compatibility with current systems so as not to compromise performance. ECS developed the digital control system and interface for NEDU’s Ocean Simulation Facility (OSF) hyperbaric chambers as well as the digital control system and interface for NEDU’s EDF Alpha and Bravo hyperbaric chamber baths. ECS will build off these already-completed controls and interface, the EDF systems will have matching software and interfaces across all systems across the command which reduces system complexity in an effort to eliminate the chance of user error and allows for modularity between systems throughout the Command. Furthermore, current manuals and SOPs can be leveraged by operators; avoiding additional costs to generate, test, and maintain additional documentation that would be developed by an alternate vendor – a single system type, control system, and interface is required for NEDU systems to achieve continuity across all hyperbaric chambers installed therein. Therefore, it is imperative that this particular vendor be used to limit the risk to life and health of the US Navy Divers who depend on this system.

As such, the Government does not expect significant savings through competition, due to the additional cost of creating, testing, and maintaining new procedures and manuals, and does expects significant and unacceptable delays that will negatively impact this requirement.

Therefore, it is in the Government’s best interest to award on a sole source basis to ECS.

5. A determination by the ordering activity contracting officer that the order represents the best value consistent with FAR 13.106-1(b).

The Contracting Officer has determined that the order represents the best value and results in the lowest overall cost alternative (considering price, special features, administrative costs, etc.) to meet the Government’s needs.

6. A description of the market research conducted among schedule holders and the results or a statement of the reason market research was not conducted.

For the reasons specified in paragraph 4 above, ECS is the only source that can meet the Government’s needs. This requirement will be synopsized in the government point of entry SAM.gov because it is estimated to be greater than $25,000.00.

7. Any other facts supporting the justification.

None

8. A statement of the actions, if any, the agency may take to remove or overcome any barriers that led to the restricted consideration before any subsequent acquisition for the supplies or services is made.

As stated in paragraph 4 above, ECS is the only source that can meet the Government’s needs.