RFC 2.docx
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- Attached to
- USNS COMFORT (T-AH 20) MTA Federal contract opportunity
- Solicitation number
- N3220520R7004
About this file
This document contains several requests for specification clarification relating to maintenance and repair services for auxiliary diesel engines on the USNS Comfort (T-AH 20). The solicitation requests quotes to overhaul turbochargers, perform 2500 hour engine maintenance, and conduct generator testing on the ADGs and EDGs. The Navy seeks these services through solicitation N3220520R7004 to ensure the continued operations of the ship's critical power systems. Contractors must return a non-disclosure agreement to receive additional work items and references required to respond to the solicitation. Services include overhauling six turbochargers from USNS Mercy to be used as spare parts, as well as refurbishing and replacing additional turbochargers on the Comfort's three ADGs. Generator testing must include megger testing to verify condition.
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Text version
N3220520R7004
USNS COMFORT (T-AH 20) MTA
REQUEST FOR SPECIFICATION CLARIFICATION
NAME OF CONTRACTOR: ___ ___
SPECIFICATION ITEM NO.: __0592_A_TAH ADG_____
PARAGRAPH / SECTION NO:__7.4_______
TITLE: ___ 0592_A_TAH CSI AUXILIARY DIESEL ENGINE SERVICING_____
QUESTION:
7.4 as MAN just completed an overhaul of ADGs March 30, 2020 please confirm that 2500 overhaul is required on ADG No. 1, ADG No. 2, and ADG No. 3?
ANSWER:
The 2,500 hour engine maintenance is a general inspection.
Shown in SAMM log, the following Auxiliary Diesel Engine has current operating hours:
Number 1 ADG 917 running hours Number 2 ADG with 6,645 running hours Number 3 ADG with 3,234 running hours
Approximately 1,300 additional hours will be accumulated on the number 1 ADG once the award of this contract.
Yes, 2500 overhaul is required for all.
SPECIFICATION ITEM NO.: __0591_A_TAH EDG_____
PARAGRAPH / SECTION NO:__7.2.2.1_______
TITLE: ___TAH CSI EMERGENCY DIESEL ENGINE SERVICING______
7.2.2.1 usually during maintenance and repair for the 30000 hour service interval of a V20/27 the NR20 Turbocharger major overhaul is included…is a Turbocharger major overhaul of NR20 to be included?
Turbochargers for EDG will be overhauled at future avail.
SPECIFICATION ITEM NO.: __0502_A_ADG_____
PARAGRAPH / SECTION NO:__2.1.1, 3.2.1, & 7.2____
TITLE: ____Turbocharger Renewal_______________________________
2.1.1 and 3.2.1 Do not list the Serial Number of each of the four (4) Turbochargers to be removed, which are required in order to provide quotation.
7.2 Will the same four (4) Turbochargers removed in 7.2.1 be overhauled as per WI 0507 and reassembled in 7.2.2?
ANSWER:
USNS Comfort ADG Turbo Charger Serial Numbers. Any four turbos below are to be swapped with refurbished GFM:
ADG 1- 1162068
ADG 1- 1162069
ADG 2- 1162070
ADG 2- 1162071
ADG 3- 1162072
ADG 3- 1162073
NOTE: A separtae contract to refurbished six (6) used NR26/28 Turbo Chargers from USNS Mercy will provided as government furnished materials (GFM) with the following serial numbers and to be resemble on work item 502 paragraph 7.2.2 :
-1161974 -1161973 -1161976 -1161977 -1161978 -1161975
Work Item 0507 is a Category B item and will be activated for overhaul and used as spare parts for future repair. Please provide a quote.
SPECIFICATION ITEM NO.: __0507_B_REFURBISH ADG _____
PARAGRAPH / SECTION NO:__2.1.1 and 3.2.1_______
TITLE: ____Turbocharger Refurbish_______________________________
2.1.1 and 3.2.1 Do not list the Serial Number of each of the four (4) Turbochargers to be refurbished, which are required in order to provide exact fit spare parts as P/N 501.000, 548.000, etc. are generic to all MAN turbochargers…ask to please provide?
USNS COMFORT ADG Turbo Serial Number
ADG 1- 1162068
ADG 1- 1162069
ADG 2- 1162070
ADG 2- 1162071
ADG 3- 1162072
ADG 3- 1162073
NAME OF CONTRACTOR: _______________________________________________
SPECIFICATION ITEM NO.: __0593___________________
PARAGRAPH / SECTION NO:___1.1 and 7.3.6.7.15_________________
TITLE: ________ADG Top End_________________________________________
1.1 What is the generator serial number?
7.3.6.7.15 Generator test. Please clarify MSC’s requirement for generator test. Do we need to megger? Or is the 80% load test in 7.3.6.7.14 sufficent for generator test?
0. Model: 3508B Serial #: S2B00264
Yes, contractor will be required to Megger the Generator.
Generator Test requirement in 7.7.3 is sufficient to Test Generator.
ATTACHMENT J - 8
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