0501_A_Firemain_Charging_Pump_Replacement.docx

USNS Alan Shepard

( TAKE 3 )

ABSTRACT

This work item describes the requirements to replace the firemain charging pump with GFM and procure and replace the controller PLC.

REFERENCES

1.1 MSC Tech Manual, CR18297, Installation Operation Maintenance SERIES 10000 Composite Pump

ITEM LOCATION/DESCRIPTION

Location: Auxiliary Machinery Room, 5-58-01

Description System: Firemain Mfg: Sims Pump Company Model: Series 10000 (NQ21892CC) Number of Pumps: 1 Quantity: One Firemain Charging Pump & Motor Skid Dimensions: 48”L x 28” W x 26” D (Approx.)

Weight: 1600 lbs. (Approx.)

CONTRACTOR FURNISHED MATERIAL

*EQUIVALENT (METRIC) PARTS ACCEPTABLE IF APPROVED BY MSCREP

GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE

Government Furnished Equipment (GFE): None Government Furnished Material (GFM):

Government Furnished Services (GFS): None Government Furnished Information (GFI): None

NOTES

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 including but not limited to GTRs 1 through 7, 22, 23, 24, 28, and 29.

1.2 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.

The T-AKE class electrical color coding does not follow the 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 electrical cables to ensure they are de-energized prior to working on the item.

QUALITY ASSURANCE REQUIREMENTS: None additional

STATEMENT OF WORK REQUIRED

Provide and operate equipment and supply all services and assistance to accomplish the replacement of the ship’s firemain charging pump

1.3 Coordinate with ship’s force to have associated equipment locked and/or tagged out per ship’s lock out/tag out policy. When the maintenance is complete, coordinate with ship’s force to have associated equipment unlocked and/or tagged in per ship’s lock out/tag out policy.

1.4 Drain and dispose of any liquid in accordance with all local, state, and federal laws.

Provide temporary caps, blanks or plugs on open connections to adequately protect the system from contamination and leaks during the accomplishment of this work item. Coordinate removals and reinstallations with the Chief Engineer to ensure the vessel is always aware of system status until the cooler work is completed.

Unbolt, remove, and rig out existing pump/motor skid. See figure 1 for guidance. Disconnect (do not cut) electric power to the pump motor. Bag and protect wires.

Figure 1 – Pump Skid Fabricate a heavy-duty wooden crate(s) to store and transport the removed fire pump and motor skid assembly. Place removed pump/motor skid into crate and turn over to ship’s force.

Perform power tool surface preparation pump skid foundation (SSPC/SP-3) Apply three (3) coats of AMERCOAT 240 supplied by the ship to match surrounding areas Rig, target, and install new GFM pump/motor assembly using CFM provided mounting hardware. Call out MSCREP or ship’s force to inspect fit of assembly to the system.

Reconnect pump electrical power cable. Coordinate with ship’s force to MANUALLY bump test the pump for direction.

For sections 7.11 and 7.12, the contractor shall provide services of a PLC technician with experience with Rockwell/Allen Bradley Pico Series PLCs. The technician may need to bring their own service laptop with PicoSoft software that will allow for transfer of program from the existing PLC to the CFM-provided replacement PLC.

Perform replacement of control PLC (located inside pump skid control panel) and use programming cable to program the PLC using program in existing PLC. Turn over the PLC cable (Item 3.4.5 to ship’s force).

Perform operational test with ship’s force, to demonstrate the operation of the charging pump in LOCAL and REMOTE (MCCS) operation.

GENERAL REQUIREMENTS: None additional 0501 - 7 image1.png image2.png