0517_A_Cargo_Defrost_Brine_Heater_Replacement_(VR16-0069)_Rev_A.doc

USNS CARL BRASHEAR

(T-AKE-7)

MACHINERY, AUXILIARY SYSTEMS

N32205-18-R-4260

27 Nov 2017

ITEM NO. 517

Category "A"

MSC/N756/JCO

CARGO DEFROST BRINE HEATER REPLACEMENT (VR16-0069)

1.0 ABSTRACT:

1.1 This item describes the requirement to replace brine heater.

2.0 REFERENCES:

2.1 MSC DWG 516-8387387; Cargo Refrigeration Secondary Coolant Circ System Diagram

3.0 ITEM LOCATION/DESCRIPTION:

3.1 Location/Quantity

3.1.1 Location: AMR 5-58-01

3.1.2 Quantity: One (1) Cargo Refrigeration Brine System.

3.2 Item Description/Manufacturer’s Data.

3.2.1 Bill of Materials: (Contractor Supplied):

3.2.2 Quantities are considered estimates. The Contractor shall provide the exact quantities and additional material such as miscellaneous fittings, cable hangers, cable tags, etc, which are not included in the List of Materials, in order to install a fully functional system which meets the requirements of this specification.

4.0 GOVERNMENT-FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1 Government Furnished Materials/Equipment

5.0 NOTES:

5.1 The contractor and all subcontractors, regardless of tier, must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTRs.

5.2 The contractor and all subcontractors regardless of tier are advised to review the other work items under this contract to determine their effect on the work required under this work item.

5.3 THIS SHIP CONTAINS HIGH VOLTAGE (HV) ELECTRICAL SYSTEMS. OBEY ALL POSTED AND VERBAL INSTRUCTIONS REGARDING SAFETY AND EXCLUSION FROM HIGH VOLTAGE AREAS. AT NO TIME APPROACH, WORK ON, OR ENTER A HIGH VOLTAGE AREA WITHOUT PROPER AUTHORIZATION.

5.4 THE T-AKE CLASS ELECTRICAL COLOR CODING DOES NOT FOLLOW CONSISTENT COLOR SCHEME. THE SHIP IS KNOWN TO HAVE CURRENT CARRYING CONDUCTORS COLORED GREEN, BLUE, BLACK, AND WHITE. ASSUME ALL ELECTRICAL CABLES ARE ENERGIZED UNTIL TESTED AND PROVEN OTHERWISE. TEST ALL ELECTICAL CABLES TO ENSURE THEY ARE DE-ENERGIZED PRIOR TO WORKING ON THE ITEM.

6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional

7.0 STATEMENT OF WORK REQUIRED:

7.1 Tag-Out all required systems and equipment. Rinse GFM Containers (4.1) and show to MSCREP clean and clear containers ready for storage of Brine. Drain and temporarily store brine liquid in GFM Containers.

7.2 Contractor shall document all working fluids drained, stored for tracking purposed in Work Item 023 “Hazardous Waste Management and Disposal”.

7.3 Remove lagging from brine piping in way of connections.

7.4 Temporarily Remove piping interferences and catwalk in way of Brine Heater to aid in removal of old brine heater and installation of new.

7.5 Contractor shall rig and prepare new Brine Heater for installation.

7.6 Crop old existing Brine Heater; disassemble unit and turn over any salvageable core heaters to Ship’s Force as Spares.

7.7 Provide new piping Gaskets.

7.8 With the assistance from Ship’s Force, Contractor shall fill Brine System and assist with bleeding/burping lines. Verify connections, no leaks at new installation.

7.9 Reinstall lagging removed; renew heavily damage insulation and lagging.

7.10 Electrical:

7.10.1 Contractor will accomplish electrical terminations with the assistance of Manufacturer’s Rep per para 7.13

7.11 Inspections and Testing:

7.11.1 After systems have been restored, systems shall be brought to operating temperatures and pressures in the presence of the MSCREP. The MSCREP shall witness the Cargo Refrigeration units in operation when the unit is at operating temperatures and pressures during seal trials.

7.12 Painting, Labeling and Markings:

7.12.1 Prime and paint all new and disturbed surfaces.

7.13 Manufacturers Representative:

Trident LLC

Sean Greenwood

Field Service Manager

Cell: (906)396-3242 sean.greenwood@tridentllc.com IMECO Division

8.0 GENERAL REQUIREMENTS: None additional.

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