0532_A_HTLT_Freshwater_System_Flush_REV_1.doc

USNS Chambers

( TAKE 11 )

1.0

ABSTRACT

This item describes the Industrial Assist for the flushing High Temperature (HTFW), Low Temperature Freshwater(LTFW) Cooling Systems

2.0

REFERENCES

2.1 MSC Dwg. No. 256-8499057; Central Seawater Cooling System Diagram

2.2 MSC Dwg. No. 532-8499061; Diesel Generator High Temperature Freshwater Cooling System Diagram

2.3 MSC Dwg. No. 532-8499083; Low Temperature Freshwater Cooling System Diagram

2.4 Drew Marine Flushing Procedure – Maxigard to Liquidewt

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location/Quantity

3.1.1 Main Machinery Room (MMR)

3.1.2 Auxiliary Machinery Room (AMR)

3.1.3 System Capacities:

HTFW ≈ 2500 Gallons

LTFW ≈ 14750 Gallons

3.2 Contractor Furnished Equipment:

3.2.1 Contractor shall furnish all hoses, tanks, pumps, heat exchanger, valves, piping, elbows, plugs, etc. necessary to perform a satisfactory flush. Provide a measurement device able to measure the pH level of cleaning fluid, rinse, and final fill fluid.

3.2.1 Rainmaker or Distillate water to refill Distillate tanks.

3.2.1.1 30,000 Gallons of Distilled Water

3.2.2 Quantities are considered estimates. The contractor shall provide the exact quantities and (reasonable) additional material such as hose, hangers, sealant, screws, etc., in order to flush and install a fully functional system that meets the requirements of this specification.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1 The following materials will be Government furnished:

4.1.1 Liquidewt ≈ 50 Pails

4.2 Government Furnished Services (GFS): None

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 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 Open and clean expansion tanks in accordance with Work Item 021.

7.1.1 Provide a Call Out for MSCREP to verify that all sludge and debris is removed and tank is dry.

7.2 Upon completion of tank cleaning, close tanks with new gaskets and wicking grommets.

7.2.1 Remove all coolant from the ship’s Drain Tank system and dispose of in accordance with Work Item 023 “Hazardous Waste Management and Disposal” and all Federal, State, and Local regulations.

7.2.2 Approximately 18,000 Gals of MAXIGARD Distillate Mix.

7.3 Use References 2.0 as guidance.

7.4 Fill Distillate Tanks with Distillate or Rain Maker water, Approximately 30,000 Gal.

7.5 Manufacturer Representative: None Additional

8.0 GENERAL REQUIREMENTS: None additional.

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