0406_A_Underwater Speed Log PM_ARCTICROH14R2.doc

USNS ARCTIC

(T-AOE 8)

COMMUNICATION & NAVIGATIONAL AIDS

RFP NO. N32205-14-R-2000

Ammendmant 001

ITEM NO. 406

CATEGORY "A"

MSC/N6642/ALD/JB

UNDERWATER SPEED LOG PM

1.0 ABSTRACT:

1.1. This item describes the requirement to perform an inspection and preventative maintenance to the SRD 500 Speed log and all related system components onboard ship.

2.0 REFERENCES:

2.1. SRD500 Speed log (Tech manual Available on Ship)

3.0 ITEM LOCATION/DESCRIPTION:

3.1. Sperry Doppler Speed Log (DSL) System consisting of:

· Master Display Unit; P/N 1808104-17

· Electronic Unit; P/N 1982770

· Transducer (Valve mount) with 25M cable; P/N 1982769-VAR

· Sea Chest Kit w/8-inch Gate Valve; P/N 1979552-2

· Sea Chest Installation Drawings; P/N 1813692

· Digital Remote Display unit (3) each; P/N 1811824-6

· Dimmer module watertight box (2) each; P/N DIM112

· 24VDC Power supply; N163S; 115vac/24vdc

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None

5.0 NOTES:

5.1. The contractor and all subcontractors regardless of tier shall consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTRs including but not limited to GTRS 1 through 7.

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. Many of the definitions relating to performance of this work item are found in Work Item 001.

6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional

7.0 STATEMENT OF WORK REQUIRED:

7.1. Arrangement/Outfitting: None

7.2. Structural: None

7.3. Mechanical/Fluids: None

7.4. Electrical:

7.4.1. Turn off and tag the breaker at the power panel to secure all power to the DSL system prior to any disconnections or removals in accordance with contractor and MSC Electrical safety procedures. Upon completion of work return the system to normal operation.

7.5. Electronics:

7.5.1. Perform a pre and post PM operational test of the DSL system and submit a written report to the MSCREP for each delineating the complete status of the system and highlighting any deficiencies in accordance with Reference 2.1. The written report shall include System Make, model, version/part number, serial number, and software version.

7.5.2. The manufacturer’s rep shall perform the following electronic maintenance actions. Upon securing power from the system clean and inspect each component listed above under Section 3.0. Inspect cables, PCB's, connectors, wiring, and cabinet integrity. Inspect for burned, frayed, cracked, broken, bulging or missing components or hardware. Provide and replace missing hardware, i.e. nuts, bolts, washers, lugs, damaged connectors, fuses, and burned out lamps or LED's. Verify system software and manufacturer recommended upgrades or patches. Use a mild general purpose (plastic friendly) detergent cleaner on display units.

7.5.3. Remove the Transducer to clean and inspect it in accordance with Reference 2.1. Use caution as outlined in the technical manual chapter 4 when working on the Transducer. Do no scrape, ship, sandblast, grind, sand or use acid or abrasive substance when cleaning the Transducer.

7.5.4. Disconnect and remove the Gate valve from the ship for overhaul in accordance with Reference 2.1. Upon completion of overhaul reinstall the gate valve using the reverse procedures as outlined in the manufacturer's technical manual.

7.5.5. Test the DSL System power supplies (External & Internal), frequency, and power output to ensure they are in tolerance. Perform system self test and measured mile test. Perform alignments and troubleshooting as required by the manufacturer for out of tolerance specifications.

7.5.6. Restore the DSL System to normal operation and perform the post-OP test as outlined in the paragraph above.

7.6. Preparation of Drawings/Documentation: None

7.7. Inspection/Test:

7.7.1. The manufacturer's representative shall perform a pre-inspection and post-inspection test of speed log system.

7.7.2. Observe all repeaters to ensure they are accurate to actual movement and water depths. Test will be completed at sea conditions. Inspect entire system for any visual defects or problem areas. Submit a written report to the MSCREP within 48 hours outlining the test results. The manufacturer's representative shall assume all costs for materials and hardware outlined under the statement of work Section 7.0.

7.8. Painting: None Additional

7.9. Marking: None Additional

7.10. Manufacturer’s Representative:

7.10.1. The contractor shall engage the services of a manufacturer’s representative to perform all work in this spec item and absorb all costs for it. Other representatives may be considered if they provide the MSCREP with a signed letter of Qualification from the equipment manufacturer or a certificate of training for the Speed Log and comply with GTR 24

8.0 GENERAL REQUIREMENTS: None Additional

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