SOW CGC Healy Ships Start Air Compressor Inspect and Repair.doc

55100_IG_0419_420

Scope of Work: Ship Service Air Compressor Inspect and Repair

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to overhaul the Nash Engineering model AD-203 Ships Service Air Compressor.

Background: Water is pouring down from the head of the pump as it runs. Ships force suspects the pump mechanical seal has failed. Need assistance to disassemble the pump, identify the failed component. Submit CFR.

1.2 Government-furnished property. None

None

1.3 Contractor-furnished property. Mechanical Seal kit, see figure 1. OEM is Nash Engineering.

Figure 1

1.5 Tools. CGC Healy engineers can provide simple and basic tools such as: Screwdrivers, Pliers, Wrenches, Hammer, Tape Measure, Utility Knife, Level, Saw, Files, Putty Knife, and Multimeter. No specialty tools will be provided. If CGC Healy does not have a particular tool needed for the repair, contractor must provide it.

1.5 Planned period of performance. 9 – 13 June 2025

TABLE 1 – Compressor Characteristics

Pipe Connections

Air Discharge 2 inches - NPTF

Initial Prime and Fresh Water Make-up ½ inches – NPTF

Liquid Drain ½ inches – NPTF

Cooling Water In 2 inches - NPTF

Cooling Water Out 2 inches - NPTF

Motor Characteristics

Manufacturer Reliance Electric

Frame 405STS Marine Duty

Rating

100 HP, 1780 RPM

Operating Power 440 VAC, 3-Phase, 60 Hertz

3.1.1 CIR. None.

3.1.2 Tech Rep. Technician must be familiar with the following compressor model AD-203.

3.1.3 Protective measures. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces near the work area against contamination during the performance of work. Upon completion of work, the Contractor shall remove all installed protective measures, inspect for the presence of contamination, and return all contaminated equipment, components, and spaces to original condition of cleanliness.

3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.2 Preliminaries. The Contractor shall de-energize the compressor to be overhauled, isolate from the remainder of the Ship Service Air and fresh water systems, and tag out in accordance with SFLC Std Spec 0000.

3.3 Compressor Overhaul.

3.3.1 Reassemble the air compressor in strict compliance with the procedures outlined in chapter 6 of Coast Guard Tech Pub 5204.

NOTE:

When re-assembling compressor components take care that all flat faced joints and synthetic rubber O-rings are properly installed. In any operation involving O-rings, it is important to exercise care to prevent damage to O-rings. If O-rings are damaged, they must be replaced. It is important when replacing cylinder joints that the correct thickness is used to maintain the correct clearance at the top of the pistons.

3.4 Operational Test of Overhauled Compressor

3.4.7 Performance Test. With the ship service air receivers empty, line up the overhauled compressor to the receivers. Charge the receivers to 125 PSIG, record the elapsed time from compressor start to stop, submit via a CFR.

3.4.8 Submit the completed “Compressor/Motor Operational Data Sheet” in Appendix 1 via CFR.

4. NOTES

4.1 MPC Accomplishment. Completion of the work item constitutes completion of MPC A-C-7236; cutter shall record as such in FLS-MAM.

4.2 Past Performances. Contractor must submit a history of past performances of working on similar projects to the contracting officer and LTJG Igor Guerrero.

4.3 Security Requirements. In order to gain access to base Seattle, contractors or subcontractors need Real ID Driver Licenses. Contractor must submit a list of personnel needing access to United States Base Seattle. Contractor must include the following information to the KO and Assistant Engineer Officer at christopher.j.maytum@uscg.mil:

1. First and Last Names

2. Date of Birth

Individuals determined to meet the criteria to be considered a foreign national will not be allowed access to U.S. Coast Guard owned facilities, units, cutters.

4.4 Point of Contact: for questions regarding this scope of work please contact LTJG Igor Guerrero at igor.guerrero@uscg.mil.

Appendix 1

Compressor/motor operational data sheet

nameplate data

MFR

MFR

MFR

Volts

Volts

Model #

Phase/Hz

Type/Model

Serial Number

Type/Model

NEMA size

RPM

HP

Frame

Serial Number

Insulation Class

Service Factor

Serial Number operational test data

Phase BC

Phase CA

Dip Switch Setting

Amperage

Rotation (sat/unsat)

Start/Stop (sat/unsat)

Ind. Lt (sat/unsat) operating data

Satisfactory Operation (noise, vibration, etc)