70Z08526Q2078_SOW.pdf

General Requirements

1. SCOPE

1.1 Intent. This standard specification invokes general requirements for conducting vessel repairs performed by commercial contractors at a Coast Guard facility for Coast Guard vessels.

2. REFERENCES

COAST GUARD DRAWINGS

None

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2022, Welding and Allied Processes

Surface Forces Logistics Center Standard Specification 5550 (SFLC Std Spec 5550), 2022, Fire Prevention and Response

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General. The Contractor must conform to all requirements specified in SFLC Std Spec 0000 and in this item, as applicable, during the performance of this availability. The requirements of this WI applies to all work under the scope of this contract, whether explicitly stated in all following work items or not, and to all other work subsequently authorized by changes, modifications, or extensions to the contract.

3.2 Contractor-provided fire watch personnel. The Contractor must provide fire watch personnel and equipment.

3.3 Welding and brazing requirements. The Contractor must perform all welding and allied processes, and NDE in accordance with SFLC Std Spec 0740.

3.4 Fire Prevention Specification. The Contractor must submit a Fire Prevention Plan in accordance with paragraph 3.1 of SFLC Standard Spec 5550

51000_ BJA_1225_420

WORK ITEM 1: Air Conditioning Plant, Assess

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to asses the three chilled water plants aboard the HEALY.

1.2 Government-furnished property.

None

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 420 WAGB 514-005, Rev -, Chiller Plant Replacement ASW Modifications

Coast Guard Drawing 420 WAGB 514-009, Rev -, Chiller Plant Replacement Chilled Water Modifications

Coast Guard Drawing 420 WAGB 514-014, Rev -, Chiller Plant Replacement Electrical Modifications

Coast Guard Drawing 750-WMSL_520_001, Rev H, Seawater Cooling System Diagram

(ASC520001)

COAST GUARD PUBLICATIONS

Coast Guard Technical Publication (TP) 11109, February 2012, Chilled Water Air Conditioning Plant – Model AMC-754MQ- Installation & Operation Manual

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General.

3.1.1 Planned Period of Performance: 27 December 2025 - 4 January 2026.

3.1.1 CIR.

None.

3.1.2 AC Tech Rep. The Contractor must provide the services of a Qualified Technical Representative who is familiar with the ADRICK AMC-754MQ Air Conditioning plants to accomplish the following on site:

Advise on manufacturer’s system information.

Assist with disassembly, inspection, repair, modification, calibration, testing, assessment and reassembly of the equipment/system.

Ensure compliance with manufacturer's procedures and standards during system disassembly, inspection, and reassembly as applicable.

3.1.2.1. Ensure the Tech Rep has experience with the system/equipment stated above and demonstrated on their résumé.

3.1.2.2. Removed.

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000.

3.1.3.1 Protective measures - environmental. The Contractor must abide by all applicable environmental protection tasks as specified in paragraph in SFLC Std Spec 0000, Appendix A (Requirements for Environmental Protection).

3.1.3.2 Protective measures – refrigerant. The Contractor must take all necessary precautions to prevent introduction of contaminants and moisture into refrigeration system piping and components by sealing all openings.

3.1.4 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.1.5 Refrigerant handling.

3.1.5.1 Personnel qualification. The Contractor must provide the CG Representative documentation that ensure all prime and sub contractors servicing refrigerant-based Air Conditioning and Refrigeration (AC&R) equipment hold a current Environmental Protection Agency (EPA) Technician Certification, Type IV (Universal Certification), and meet all State and local regulations and licensing requirements.

3.1.5.2 Refrigerant draining and disposal. The Contractor must ensure all vessels’ Air Conditioning Plant refrigerant is drained, recovered and disposed of in accordance with all Federal, state and local environmental regulations.

3.1.6 Guidance. The Contractor must refer to the drawings in Section 2 herein for background information about the installation.

3.1.7 Safety. The Contractor must familiarize themselves with and comply with applicable Warning, Caution and Attention in TP 11109.

3.2 Operational test - initial. Prior to commencement of work, the Contractor must witness Coast Guard personnel perform an initial operational test of all items or shipboard devices to be disturbed, used, repaired, or altered, to demonstrate existing operational condition. Submit a CFR.

3.2.1 Initial operational test of the Air Conditioners can be waived if operating the AC plant will risk personnel safety and/or further damage to the system. Submit a CFR for this request for CG Representative’s review.

3.3 Refrigerant evacuation and storage. The Contractor must pump down each plant in accordance Section 4 of TP 11109 and store the refrigerant safely.

3.3.1 Prior to storage, the Contractor must test the oil for acid and check for Air/Non-Condensable in the recovery bottle. CG Inspector must be present to verify Pressure/Temperature Relationship on recovery cylinders after recovery cylinders have settled for a minimum of 24 hours. Submit a CFR.

3.4 Assessment. The Contractor, in consultation with the Tech Rep, must assess the following problems, and provide the USCG with a report describing how the problems can be addressed:

#1 CHILLED WATER PLANT (Chiller 101 and 102): PLC not monitoring or controlling system. compressor 101 does operate in manual. Compressor 102 has multiple phase failures, welded contactors and tripping primary and secondary breakers. Both compressors are having multiple micro relay failure in plc monitoring.

#2 CHILLED WATER PLANT (Chiller 201 and 202): Condenser for chiller 201 has multiple broken flange studs. Compressor 202, compressor is showing signs of burnout even after replacement last dockside. Immediately tripping 200a/250a breakers and system plc showing micro relay failures.

#3 CHILLED WATER PLANT (CHILLER 301 AND 302): WRV is not operating properly due to plc issues and system display will stop reading properly for several hours then correct itself. System is also having micro switch relay issue for monitoring system.

3.4.1 The report must address the following issues:

Root cause of the problem for each chilled water plant

Recommended materials to repair the issues

Lead time for materials

Suggestions to prevent these issues in the future.

3.5 A/C plants. The Contractor must restore the affected system to the as-found condition.

NOTE

The Coast Guard is aware that many of the affected AC plants are not functional. Paragraph 3.5 does not require the Contractor to bring the plants back to a functional condition – just to the condition that they were in before they were disturbed by the contractor.

3.5.1 Charging Refrigerant. The Contractor must refill the refrigerant from the stored bottles in accordance with of TP 11109 in the presence of a CG Inspector.

3.5.2 Prior to charging the refrigerant, the system must be pulled down to a vacuum below 500 microns for at least 5 minutes.

3.6 Operational test – post repairs. After completion of work, in the presence of the Coast Guard Inspector, the Contractor must thoroughly test and demonstrate all items or shipboard devices that have been disturbed, used, repaired, altered, or installed to be in satisfactory operating condition. Submit a CFR to the CG Representative.

3.6.1 Initial operational test of the Air Conditioners can be waived if operating the AC plant will risk personnel safety and/or further damage to the system. Submit a CFR for this request for CG Representative review.

4. For questions with this specification contact: Igor Guerrero at igor.guerrero@uscg.mil, (510) 685-0519.

5. NOTES

Location:

CGC Healy 1519 Alaskan Way S.

Seattle, WA 98134