SOW_0500_A_SHIPSSERVICEA-CandREFRIGERATIONSYSTEM_(003).doc

USNS SALVOR

(T-ARS 52)

MACHINERY, AUXILIARY SYSTEMS

RFP # 14 February, 2018

ITEM NO. 500

CATEGORY "A"

MSC/N43D/WDD

SHIPS SERVICE AIR CONDITIONING AND REFRIGERATION SYSTEM

1.0

ABSTRACT

1.1 Provide the services of a Qualified CARRIER MARINE Air Conditioning and refrigeration service technician to attend the vessel and perform a full inspection and subsequent repair for the vessels NO. 1, 2, & 3 AC Plants and #1 & #2 Refrigeration Plants .

2.0

REFERENCES

2.1 CARRIER Technical Manual for Refrigeration Compressor

(available onboard). S9516-A1-MMA-010.

2.2 CARRIER Technical Manual for Air Conditioning Compressor

(available onboard). S6230-BP-MMM-010 3.0

ITEM DESCRIPTION/LOCATION:

3.1 Quantity:

3.1.1 Two (2) Carrier 5F30C664 Refrigeration

Compressors. Sea Horse/ Skid Mounted 90YF Units

.7 Ton

#1-S# 0107U04515

#2-S# 0514U00254.

One (10-Freeze Box 1688 cu-ft.

One (1)- Chill Box 884 cu-ft.

3.1.2 Three (3) Carrier 5H60-C109 35 Ton Air

Conditioning Compressors. Sea Horse/

Skid Mounted 90YH Units.

#1- S# 1106U9118

#2- S# 1206U00850

#3- S# 4905U04692

3.2 Location: Thruster Motor Rm. and Main Machinery Space.

4.0

GOVERNMENT FURNISHED MATERIAL/EQUIPMENT/SERVICES:

4.1 GOVERNMENT FURNISHED MATERIAL:

4.1.1 -Oil, filters , Dryers (A/C & Refrigeration).

-Refrigeration valve packing material

-Receiver Level Indicators

-Receiver outlet Valves.

-Oil Suction strainers both systems.

-New Size 48 filter/dryer cartridges

5.0 Place of Performance: Singapore

5.1Period of Performance: March 21,2018-May 1,2018

5.2 PPE: Dana Dunstan phone:808-56-7466/808-471-4851

Email: whitney.dunstan@navy.mil 6.0 QUALITY ASSURANCE: None additional.

7.0

STATEMENT OF WORK REQUIRED:

7.1 In conjunction with the ship’s force and prior to the

start of any repairs, test operate all three (3) A/C systems and make observations of the operating condition of the plants. Provide a detailed written report of all conditions found and recommendations for repairs as necessary to restore the reliable operation of the systems. The report shall provide a list of all parts required to be renewed with nomenclature, quantity and part numbers.

7.2 Pump down and remove all refrigerant and store for

Use as each system is brought under vacuum and triple evacuated to 500-750 microns and dehydrate same.

7.3 Install parts listed in 4.1 (filter/drier)

7.4 Perform a flush of the refrigerant side of the system for a minimum of twenty-four (24) hours. Once initiated the flush shall be performed for a continuous period of time. The contractor shall provide removable muslin bags which shall be removed for inspection every four hours and shall be replaced with new. The bags shall be marked for date and time of removal and shall be made available for inspection by CHENG to determine system cleanliness. The contractor will monitor flushing at all times.

7.5 Once the cleanliness of the system has been accepted by the CHENG and in conjunction with ships force, operate the system and make adjustment to all safety and operational switches for proper operation of the equipment. Set unloader for proper operation and leave system ready for use.

7.6 In conjunction with ships force and prior to the start of any repairs, test operates the Refrigeration system and make observations of the operating condition of the plant.

7.7 Pump down both systems and reclaim refrigerant gas for reuse. Pressurize the refrigerant system with nitrogen and perform a leak test of all components.

7.8 Provide a detailed written report of all conditions

found and recommendations for repairs as necessary to restore the reliable operation of the systems. The report shall provide a list of all parts required to be renewed with nomenclature, quantity and part numbers.

7.9 Open and inspect both condensers. Clean condensers;

remove all marine growth and fouling. Perform a pressure test of each condenser in accordance with Mfr. Requirements.

Reassemble condensers with new GFM gaskets and zincs.

7.10 Repack compressor suction and discharge valves. Renew

level indicators on both receivers, renew receiver outlet valves and install new oil suction strainers on both units.

Material is GFM.

7.11 Triple evacuate the systems to 500-750 microns and

dehydrate same.

7.12 Recharge the systems with reclaimed refrigerant gas.

Renew oil with ship furnished oil.

7.13 Install new size 48 filter / dryer cartridges (GFM).

7.14 Perform a flush of the refrigerant side of both systems

for a minimum of 48 hours. Once initiated the flush shall be performed for a continuous period of time. install muslin bags which shall be removed for inspection every 4 hours and replaced with new. Bags will be marked and labels as per above 7.4 and available for CHENG inspections.

7.15 Once cleanliness has been accepted by CHENG, operate

both system and make adjustments to all switched and controls as necessary for proper operation of the equipment.

Leave systems in a ready for operation.

7.16 Perform a full inspection of the Chill and Freeze

systems, checking the overall condition of the piping, control equipment, evaporators and defrost circuits. While the system is operating check for any leaks and properly adjust TXV’s for correct settings.

7.17 Submit a final report of all repairs and adjustment

made. Include any recommended parts (w/P#’s) and repairs.

8.0 GENERAL REQUIREMENTS: None additional.

8.1 All service reports from the OEM Tech Rep shall be provided in both hard and electronic format.

500-2