SOW 1P45B79 Work Item 2 JW system flush.pdf

Work Item 2: STATEMENT OF WORK (SOW) 801P45B79

To flush and chemically clean #1 Main Diesel Engine Jacket Water System of oil deposits onboard USCGC

HARRIET LANE

1. BACKGROUND

CGC HARRIET LANE is requesting contractors to perform a Detergent flush to remove oil deposits in the #1 Main Diesel Engine (MDE) Jacket Water (J/W) system. The engine is an ALCO 18V 251-F diesel engine, with an estimated J/W capacity of 450 gallons.

2. REFERENCE

NSTM Chapter 220, volume 3, revision 5 SFLC Std Spec 0000

3. REQUIREMENTS

The contractor shall provide the services of a qualified Technical Representative to accomplish the following services throughout the duration of all flushing stages:

1. Advise on manufacturer's information pertinent to the system.

2. Assist with proper methods of connection(s) required for proper diesel engine hot flush procedure in accordance with this SOW.

3. Ensure that the qualified technician has a resume of demonstrated experience with the system/equipment stated above.

4. Submit a copy of the qualified mechanic's resume and a list of references to the Engineering

Officer (EO).

5. Interferences. The Contractor shall be aware that interferences in way of work include, but are not limited to the below-listed. Handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences): Deck plates. Piping. Miscellaneous machinery. Wiring and cables/cableways.

6. The entire cooling system shall be flushed including the entire block, associated piping, expansion tank, and jacket water and lube oil coolers. Where applicable, the jacket water side of the distilling plant shall also be flushed. An external pump and tank with a heating coil shall be used for heating and circulating the detergent solution. The tank shall be located higher than the engine during the flush. The procedure is as follows:

Note: The system pump SHALL NOT be used to circulate the detergent solution. The system pump shall be bypassed or removed. Use of the system pump to circulate the detergent solution can lead to cavitation erosion of the pump body and impeller. An external pump and tank with a heating coil shall be used for heating and circulating the detergent solution. Use of the system pump to circulate the detergent solution can lead to cavitation erosion of the pump body and impeller.

a. Open all low point drains and completely dump the cooling system.

b. Fill the cooling system with clean, fresh water and fill the mixing tank to 1/3 capacity.

c. Circulate and heat the water to 145 to 155 °F (62 to 68 °C), Ensure that the detergent circulates through all areas of the jacket water system for a more complete flush.

d. For each gallon of water in the system, add to the tank 1/2 ounce of MIL-D-16791

Type I detergent nonionic detergent. (NSN 7930-00-282-9699, BX, 6 1-gallon bottles, or NSN 7930-00-985-6911, CN, 5 gallons)

e. Circulate the detergent solution for 30 minutes at 145 to 155 °F (62 to 68 °C).

f. Drain the cooling system. Drain the tank separately to avoid reintroducing removed oil into the cooling system.

g. Repeat the hot detergent flush if large amounts of oil are seen in the flush solution.

h. After completing the detergent flush, flush with clean, fresh water until the drained out water is clear and no sudsing is evident.

i. Flush once with deionized water.

j. Inspect the cooling system to determine the success of the cleaning.

k. In cases of heavy oil contamination, the dump and flush procedure may take several cycles in order to remove all the oil.

7. Post-flush report requirements. After each flushing stage, the contractor shall submit a detailed report to Engineering Officer within 24 hours, to include the following at a minimum:

• Method used to obtain the particulate contamination reading.

• Method used to determine particle size.

• Final contamination level readings and submit a CFR.

8. Flushing waste disposal. The contractor shall dispose of all fluids, materials and other waste resulting from the hot flush in accordance with all applicable Federal, state and local regulations.

9. Post-internal and external flush restoration. Upon completion of engine flushing, accomplish the following

• Restore J/W system to original configuration in preparation for engine run.

10. Engine run after flushing completion. In the presence of the Coast Guard Inspector, the

Contractor shall thoroughly test and prove the MDE to be in satisfactory operating condition.

11. At the discretion of the Engineer Officer and/or COTR, continue to run engine at no load and increase engine speed from idle to full speed over a 15 minute period and in accordance with the ships Engineering Operating Procedures.

12. Continue to run the engine at no-load full speed for an additional 15 minutes.

13. Stop the engine and check the J/W system for leaks.

14. The Contractor shall ensure that the Coast Guard Inspector is present during all flushing sampling and inspections. The Contractor's final sampling and inspection shall be approved in writing by the Engineering Officer.

Note: Ships force shall drain the system and any residual fluids prior to the contractor reporting onboard.

4. 4.0 ADMINISTRATION.

4.1 CONTRACTOR PERSONNEL

4.1.1 Qualified Personnel.

The Contractor shall provide qualified personnel and subject matter experts to perform all required tasks specified in this SOW.

4.1.2 Employee Conduct.

Contractor employees shall present a professional appearance and their conduct shall not reflect discredit upon the U.S. Government, and any involved Departments or Agencies. Contractor employees shall comply with all applicable Government regulations, policies, and procedures (e.g., fire, safety, sanitation, environmental protection, security, “off limits” areas, wearing of parts of military uniforms, and possession of weapons) when visiting or working at Government facilities.

4.1.3 Conflict of Interest.

The Contractor shall not employ any person who is an employee of the U.S. Government if that employment would, or would appear to cause, a conflict of interest. The Contractor shall take appropriate precautions as delineated in the Federal Acquisition Regulation (FAR) to preclude actual or apparent conflicts of interest.

4.2 PERIOD OF PERFORMANCE.

12-23 April 2021

4.3 PLACE OF PERFORMANCE.

The primary place of performance shall be onboard USCC HARRIET LANE located at below address:

USCGC HARRIET LANE (WMEC 903)

4000 Coast Guard Blvd Portsmouth, VA 23703 POC: LT Jason McLeod