0909_A_RENEW_MGCC_ANODES_rev.docx

USNS CARL BRASHEAR

(T-AKE 7)

REMOVE MGCC ANODES

1.0 ABSTRACT

This item describes renewing the MGCC anodes and providing service to the MGCC system.

2.0 REFERENCES

2.1 T/M T9633-AR-MMC-010 Marine Growth / Corrosion Control Cu / Al anode Current System : Drawing #68159

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location/Quantity

3.1.1 Location

-EOS

-Forward Seachest "D", Fr 36 port -High Sea Suction Seachest "A" Fr 66 port -Low Sea Suction Seachest "B" Fr 66 Stbd -Aft Seachest "C" Fr 75 port

3.1.2 Quantity

Fwd Seachest -Two (2) each, Aluminum(Al) Anode Assembly, 23"L X 4" Dia, US Filter part # 83133-004 -Two (2) each, Copper (Cu) Anode Assembly, 23"L X 4" Dia, US Filter part # 83132-004 High Suction Seachest -Four (4) each, Aluminum(Al) Anode Assembly, 23"L X 5" Dia, US Filter part # 83133-003 -Four (4) each, Copper (Cu) Anode Assembly, 23"L X 5" Dia, US Filter part # 83132-003 Low Suction Seachest -Four (4) each, Aluminum(Al) Anode Assembly, 23"L X 5" Dia, US Filter part # 83133-003 -Four (4) each, Copper (Cu) Anode Assembly, 23"L X 5" Dia, US Filter part # 83132-003 Aft Seachest -One (1) each, Aluminum(Al) Anode Assembly, 18"L X 4" Dia, US Filter part # 83133-005 -One (1) each, Copper (Cu) Anode Assembly, 18"L X 4" Dia, US Filter part # 83132-005

3.2 Item Description/Manufacturer’s Data

US Filter MGCC System USFilter Work Order # 2422441 Marine Growth / Corrosion Control Cu/Al anode current system; dwg #68159

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

5.0 NOTES

5.1 The Contractor and all Subcontractors, regardless of tier, must consult the General Technical Requirements (GTRs) 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 other work items under this contract to determine their effect on the work required under this work item. Many of the definitions relating to performance of this work item are found in Work Item 001.

5.3 This ship contains High Voltage (HV) electrical systems. The Contractor and all Subcontractors shall obey all posted and verbal instructions regarding safety and exclusion from High Voltage areas. At no time shall a Contractor or Subcontractor approach, work on, or enter a High Voltage area with out proper authorization.

5.4 THE USNS CARL BRASHEAR ELECTRICAL COLOR CODING DOES NOT FOLLOW CONSISTENT COLOR SCHEME. THE SHIP IS KNOWN TO HAVE CURRENT CARRYING CONDUCTORS COLORED GREEN, BLUE, BLACK AND WHITE. THE CONTRACTOR SHALL ASSUME ALL ELECTRICAL CABLES ARE HOT UNTIL TESTED OTHERWISE. THE CONTRACTOR SHALL TEST ALL ELECTRICAL CABLES TO ENSURE THEY ARE DEAD PRIOR TO WORKING ON THE ITEM.

5.5 All Welding shall be in accordance with ABS rules for building and classing steel ships.

5.6 All Electrical cables and components shall be installed in accordance with the IEEE STD 45 Latest Rev.

6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional

7.0 STATEMENT OF WORK REQUIRED

7.1 Arrangements/Outfitting: None Additional

7.2 Structural: None Additional

7.3 Mechanical/Fluid

7.3.1 Provide the services of a US Filter Electocatalytic Products Technical Representative to perform the installation on the new anodes and checking of the system.

7.3.2 Contractor to provide gaskets and insulated spacers from US Filter. The Government will provide the anodes.

7.3.3 Install new anodes in each of the sea chests in accordance with reference 2.1.1 and the OEM technical representative's instructions.

7.3.4 The anode torque values shall be verified by the OEM representative and included in his service report.

7.3.5 Verify that the anode cable connection inside the anode cap has been taped and made waterproof.

7.3.6 Two Nuts shall be used to secure the anode hanging bolts.

7.3.7 The new anodes shall not be powered until the anodes are submerged

7.4 Electrical: None Additional

7.5 Electronics

7.5.1 Controls

7.5.1.1 Verify that the ground connection to the hull is in accordance with reference 2.1.1. This connection must be made by brazing or welding he cable to the metal structure. The connection shall be covered with grease or paint to prevent corrosion. Reference 2.1.1 figure 3.3 shows correct ground method.

7.5.1.2 Verify the MGCC controller terminals block connections are tight

7.5.1.3 Clean the MGCC controller of all dust and debris.

7.5.1.4 Verify the MGCC controller power supply is functional and the power supply to each anode can be regulated.

7.5.1.5 Verify the MGCC power supply volt and amp meters are operating and calibrated. Provide calibration for the meters.

7.5.1.6 Verify Relay coils Ry 1, Ry 2, Ry3, and Ry 4, are operating properly.

7.5.1.7 Before the new anodes are connected to the power supply check the following with the hull out of the water:

7.5.1.7.1 Check and that the anodes are not shorted. The new anodes should measure 10 megaohms or higher between the electoral leads and the hull or bonded fittings.

7.5.1.7.2 Check the cable continuity by shorting the controller end of the cables to the hull and measuring for continuity between the anode and the hull. The resistance should be less than 0.2 ohms

7.6 Preparation of Drawings/Documents

7.6.1 Guidance drawings- None Provided

7.6.2 Working drawings- None

7.6.3 Redline drawings-None

7.6.4 As-built drawings-None

7.6.5 Service Reports: Provide a service report generated by the US Filter rep to the port engineer.

7.7 Inspections and Testing

7.7.1 The US filter tech rep shall make final adjustments to the system and perform an operational test.

7.8 Painting, Labeling and Markings

7.8.1 Painting

7.8.1.1 Paint all new and disturbed surfaces to match surrounding surfaces.

7.9 Marking: None Additional

7.10 Manufacturers Representative

7.10.1 Provide the services of a manufacturer's representative during installation, testing and repairs.

US Filter Electrocatalytic Products 2 Milltown Court Union, NJ

07083, USA

Phone: 908-851-2277 Fax: 908-851-6906

8.0 GENERAL REQUIREMENTS: None Additional

0909-1