0522_A_Magazine_Drain_Piping_Replacement_Rev_A.doc

USNS CARL BRASHEAR

(TAKE 7)

1.0 ABSTRACT:

1.1 This work item describes the replacement of the magazine control panel drain piping.

2.0 REFERENCES:

2.1 MSC Drawing 522-8387385, Cargo Hold Sprinkling System Diagram

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location/Quantity:

3.1.1 Location:

a. Magazine Cargo Hold 1 2nd Deck to 5th Deck

b. Magazine Cargo Hold 2 2nd Deck to 5th Deck

c. Magazine Cargo Hold 3 2nd Deck to 5th Deck

3.1.2 Quantity: Three (3) Magazine Cargo Hold control panel drain piping systems

3.2 Item Description/Manufacturer's Data: None

3.2.1 Bill of Materials (Contractor Furnished):

3.2.2 Contractor shall provide any additional items required such as fittings, welding rod, etc., which are not specifically included in References and the enclosures in order to perform installation of a fully functional system.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1 Government Furnished Material: Amercoat 240 Paint 30 Gallons.

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:

6.1 Welders must be ABS certified.

6.2 All work performed is to be IAW ABS and USCG rules. Piping, valves, fittings and all installations and modifications shall meet ABS Steel Vessel Rules and USCG requirements.

6.3 Inspections and tests shall be conducted in accordance with ABS and USCG rules/regulations and written procedures previously approved by MSC representatives.

7.0 STATEMENT OF WORK REQUIRED:

7.1 Arrangements/Outfitting:

7.1.1 Perform ship check of pipe to be removed to verify all materials are available prior to pipe removal.

7.1.2 Erect Staging to access the piping running in the overhead.

7.1.3 Provide a Marine Chemist to certify the Cargo Holds safe for hot work.

7.2 Removals:

7.2.1 Remove existing drain piping starting at the sprinkling control panels located on the 2nd through the 5th deck to terminating at the bilge well in Cargo Holds 1, 2, and 3. Reference 2.1 sheet 8, Detail 57-A

7.2.2 Retain valves, funnels, and pipe hangar U-Bolts and fasteners for reinstallation.

7.2.3 Check valves will be discarded. Check valves will not be installed in the new system piping.

7.3 Installation:

7.3.1 Install new drain piping starting at the sprinkling control panels located on the 2nd through the 5th deck terminating at the bilge well in Cargo Holds 1, 2, and 3 following the same pipe run as removed in 7.2.1, Reference 2.1 sheet 8, Detail 57-A. Pipe to transit existing bulkhead penetrations.

7.3.2 Pipe bends to be in strict adherence to ABS rules for pipe bending. Reference 2.1, General Note 52 provides ABS guidance for pipe bending.

7.3.3 Pipe penetrations of bulkheads and decks which require fire tight or smoke tight protection, the penetrations shall be made by approved methods which will maintain the same degree of fire tight or smoke tight integrity.

7.4 Painting

7.4.1 Paint all new and disturbed surfaces and new piping to match surrounding surfaces. Ships force will provide paint.

7.5 Markings: None.

7.6 Inspection/Test

7.6.1 Perform dye penetrant test of all new weld joints.

7.6.2 Perform operational test using water hose at each deck to prove accurate drainage. Satisfactory test is no back pressure/flow and zero leakage at pipe joints.

8.0 GENERAL REQUIREMENTS: None Additional.

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