4.0 26QS064 PWS SO25-012 Cargo Reefer and Brine Pump Repair_Redacted.pdf

MACHINERY, AUXILIARY SYSTEMS SERVICE ORDER

SO-25-012 Category “A” MSC/ATH

Cargo Refer Plant Repair

SO-25-012 - 1

1.0 ABSTRACT:

1.1 This item describes the requirement to provide

qualified and authorized personnel to perform troubleshooting and repairs on Cargo Reefer System and Brine pumps.

2.0 REFERENCES/ENCLOSURES:

2.1 References:

2.1.1 Technical Manual T9516-A8-MMC-010, Refrigeration Plant, Cargo.

2.1.2 Technical Manual T9515-A8-MMC-010, Refrigeration Plant, Cargo For USNS T-AKE Class Installation, Operation And Maintenance Manual

2.2 Enclsoure: None.

3.0 ITEM LOCATION/QUANTITY/DESCRIPTION:(Contractor Furnished

Material).

- All Circuit cards and cooling fans for Cargo Reefers.

Please make sure Circuit cards are pre-programmed.

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 (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 GTR’s including but not limited to GTR’s 1 through 7, 23, and 29.

5.2 This ship contains High Voltage (HV) electrical

systems. The contractor and 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 without proper authorization.

5.3 Contractor shall provide labor necessary to complete

work as discribed in this Work Item and help Ships

SO-25-012 - 2

Force clear all faults with the Cargo Refreigeraton Plants.

5.4 Contractor shall perform inspections, tests, and

trials to demonstrate a SAT operational test of the Cargo Refrigeration Plant.

5.5 Contractor shall provide distance support (if

Required) until faults have been cleared.

6.0 QUALITY ASSURANCE REQUIREMENTS

6.1 All work performed and services provided shall be to

the satisfaction of the MSCREP and Chief Engineer.

7.0 STATEMENT OF WORK REQUIRED

7.1 Cargo Reefer System

7.1.1 Conduct a systematic inspection of all

reefer machinery, including compressors, condensers, evaporators, and expansion valves.

7.1.2 Test all associated electrical components, control circuits, and safety cut-outs.

7.1.3 Verify the accuracy of all temperature and

pressure sensors.

7.1.4 Check refrigerant levels and test for system

leaks.

7.2 Brine System Pump

7.2.1 Inspect brine pump #2 & #3 and its

associated motor, bearings, and seals for mechanical failure or wear.

7.2.2 Test all electrical connections, motor

starter, and control panel circuitry.

7.2.3 Verify flow rates and pressures within the

brine loop.

7.2.4 Assess the condition of the brine and check

for contaminants

7.3 The contractor shall provide a detailed Diagnostic

Findings Report. This report must include:

SO-25-012 - 3

7.3.1 A summary of all tests performed.

7.3.2 The identified root cause(s) of failure for

each system.

7.3.3 A recommended Repair Plan of Action and an

itemized list of all required parts, materials, and specialized tools

7.4 Execute all repairs, replacements, and servicing as

outlined in the approved plan with MSCREP AND SHIPS

CHIEF ENGINEER.

7.5 Perform a full operational run-test of the Cargo

Reefer and Brine Pump systems under simulated load conditions.

7.6 Ensure the systems can operate continuously for a

minimum of 12 hours without generating alarms or exhibiting anomalie

7.7 RESERVED

8.0 GENERAL REQUIREMENTS: None additional.