SOW0225_A_SMEOVERSPEEDREPAIRSPatuxent02_2019.docx

USNS XXXXXX

T-AO XXX

MACHINERY, PROPULSION N32205-XX-R-XXXX

17 MAR 2017

ITEM NO. 203 CATEGORY “A” MSC//N7/PM1/STD ITEM

MAIN ENGINE 24,000 HOUR OVERHAULS

USNS PATUXENT

T-AO 201

MACHINERY, PROPULSION N21857-9xxx-xxxx Feb 2019

ITEM NO. 225 CATEGORY “A” MSC//N75/ADC

STBD MAIN ENGINE OVERSPEED REPAIRS (USCG 835-DTD 2018.12.20)

1.0 ABSTRACT

1.1 This item describes providing material and FME technical representative:

Shop Certify of GFM SME overspeed, installation on ship and demonstrate overspeed trip.

1.2 This item describes providing material and FME technical representative:

Accomplish repairs discovered during the Sea Trail from Philadelphia to Norfolk.

2.0 REFERENCES/ENCLOSURES

2.1 References:

2.1.1 NAVSEA Tech. Manual No. T9233-AF-MMC-010, Colt-Pielstick Main Propulsion Diesel Engine, Operation Instructions and Maintenance Procedures.

2.2 Enclosures:

2.2.1 None

3.0 ITEM LOCATION/DESCRIPTION/QUANTITY

3.1 Location/Quantity:

3.1.1 Location: Engine Room, 5-60-0.

3.1.2 Quantity: One (1) STBD main propulsion diesel engines to be dealt with

3.2 Description/Manufacturer’s Data:

3.4 Contractor Furnished Parts

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES

4.0 Government Furnished Equipment: None.

4.1 Government Furnished Equipment / Material:

4.1.1 Main Engine Overspeed Mechanisim PN T57068

4.2 Government Furnished Services: None.

5.0 NOTES

5.1 This item shall be worked in conjunction with any other contractor work being accomplished in the engineering spaces.

5.2 Period of ship availability: 11 March 2019 thru 12 April 2019

Period Of Performance: 4 days within to above dates

5.3 Location Naval Station Norfolk, Pier 9

5.4 Refernce previous PO N32205-19-P-4646

6 NOT USED

7 STATEMENT OF WORK REQUIRED:

7.1 Provide an OEM authorized technical field service representative Motor Service Hugo Stamp.

7.1.1 Install GFM One (1) mechanical overspeed trip assemblies 132 lbs. each

7.1.2 Inspect damaged STBD Main Engine overspeed on the engine, clean and prepare for installation on certified GFM overspeed. Operationally test over-speed in presence of CHENG and ABS Surveyor

7.1.3 Operational checks of both main engines at full power rating of both main engines for follow up preferring the vessel is loaded with cargo to determine satisfactory combustion analysis and shaft balancing.

7.3 Upon completion of the aforementioned overhaul, repairs, inspections, and tests, provide three (3) copies of a typewritten report to MSCREP.

8 GENERAL REQUIREMENTS: none

206-3