WI_0301_N4044325Q0038.pdf
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- Attached to
- USNS MERCY Electrical Repairs
- Solicitation number
- N4044325Q0038
About this file
This is a work item specification (Item No. 0301) for electrical repairs on the USNS MERCY (T-AH 19), specifically addressing the troubleshooting and repair of an EDG (Emergency Diesel Generator) bus tie issue identified as CASREP 25002. The document outlines requirements for January 2025 maintenance work to be performed at MSC-MAINT HUB San Diego.
The work item details a malfunction where the EDG auto-switchover function fails during test switch operation, causing the bus-tie to improperly cycle on and off on the emergency switchboard, resulting in wrong phase closure to the AMR switchboard. The contractor must provide a qualified electrician to visually inspect, test, and verify operation of the EDG bus tie, make necessary minor adjustments, provide a condition report to the Port Engineer detailing findings and recommended repairs, and verify proper operation after repairs in the presence of the Chief Engineer and/or MSCREP. The work is to be performed at location 01-132-1, with all contractors required to comply with General Technical Requirements (GTR) and review other related work items under the contract.
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Other files
| File | Type | Posted |
|---|---|---|
| WI_0302_N4044325Q0038.pdf | ||
| Combined Synopsis_N4044325Q0038.pdf | ||
| Provisions and Clauses_N4044325Q0038.xlsx | XLSX spreadsheet |
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Text version
USNS MERCY
(T-AH 19)
300 – ELECTRICAL
JANUARY 2025
ITEM NO. 0301 CATEGORY “A” MSC-MAINT HUB SAN DIEGO
EDG BUS TIE TROUBLESHOOT AND REPAIR (CASREP 25002)
0301-1
1.0 ABSTRACT:
1.1 The EDG auto-switchover function fails when using the test switch. The bus-tie places itself on the emergency switchboard then momentarily switches off and then immediately switches back on causing wrong phase closure to the AMR switchboard. It also depends on if the AMR is on shore power or not, the power would trip offline on the AMR switchboard. The “test” switch is what the tech manual instructs to use for testing of the EDG switchover function. This work item describes the requirements to troubleshoot and repair the EDG bus tie issue.
2.0 REFERENCES/ENCLOSURES: None
3.0 ITEM LOCATION/DESCRIPTION:
3.1 Location/Quantity:
3.1.1. Location: 01-132-1
3.1.2. Quantity: 1
3.2 Item Description/Manufacturer's Data: None
4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES/INFO: 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 must comply with 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.
6.0 QUALITY ASSURANCE REQUIREMENTS: Refer to Article 7.0
7.0 STATEMENT OF WORK:
7.1 Provide the services of a qualified electrician thoroughly acquainted with the USNS
MERCY’s EDG bus tie to accomplish the following work:
USNS MERCY
(T-AH 19)
300 – ELECTRICAL
JANUARY 2025
ITEM NO. 0301 CATEGORY “A” MSC-MAINT HUB SAN DIEGO
EDG BUS TIE TROUBLESHOOT AND REPAIR (CASREP 25002)
0301-2
7.1.1. Visually inspect, test, and verify operation of the EDG bus tie. Make minor adjustments as needed to restore proper operation.
7.1.2. Provide a condition report to the Port Engineer summarizing all as found conditions to include any recommended parts and repairs. A CCO will be issued accordingly for any additional parts and/or repairs.
7.1.3. Upon completion of repair(s), verify proper operation of the EDG bus tie with the presence of the Chief Engineer and/or MSCREP.
8.0 GENERAL REQUIREMENTS: None
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