0407_A_OE-82C-WSC-1-V Antenna Group Maintenance_ARCTICROH14R2.doc

USNS ARCTIC

(T-AOE 8)

COMMUNICATION & NAVIGATIONAL AIDS

RFP NO. N32205-14-2000

Ammendmant 001

ITEM NO. 407

CATEGORY "A"

MSC/N6642/ALD/JB

OE-82B/WSC-1(V) Antenna Group Maintenance

1.0 ABSTRACT:

1.1. Remove, refurbish and reinstall both OE-82 system AS-3018 antennas and AM-6691A/WSC-1 Antenna Amplifier (From here on referred to as “Antenna Group).

2.0 REFERENCES:

2.1. OE-82C Satellite Antenna Group Technical Manual (Available Aboard Ship).

3.0 ITEM LOCATION/DESCRIPTION:

3.1. Location/Quantity:

3.1.1. Location: Forward of bridge and Atop King post amidships.

3.1.2. Quantity:

a. AS-3018A/WSC-1 ANTENNA (2) each.

b. AM-6691A/WSC-1 AMPLIFIER (2) each.

c. SA-2000A RF SWITCHING UNIT (1) each.

3.2. Bill of Materials: None

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:

7.1.1. Provide crane and rigging services to remove, then reinstall the OE-82 Antenna group to/from the ship.

7.2. Structural: None

7.3. Mechanical/Fluids: None

7.4. Electrical:

7.4.1. Tag out the OE-82 Antenna group in accordance with the contractors and MSC’S tag out procedures and make an entry into the Tag log book. Upon completion of antenna group overhaul work, remove the tags and clear the log book

7.5. Electronics:

7.5.1. Disconnect mechanically and electrically the Antenna group. Remove from the ship and transport to the MSCREP shop for overhaul. Tag the antennas and their respective electrical cabling with the following information: Name, model, location, antenna number.

a. The contractor shall perform internal and external inspection of all components. Overhaul to include replacement hardware, o-rings, labels and gaskets. Motors, limit switches, bearings and slip rings are to be tested and a condition report sent if they require refurbishment.

b. Once all the above procedures listed in Paragraph 7.5.1.a have been performed the contractor shall submit a condition report within 24 hours with results of bench test.

7.5.2. Perform a leak test of the OE-82 antenna group dry air system at the newly installed AS-3018 antennas and repair dry air leaks as necessary. From the dehydrator in the radio transmitter room pressurize the system and use a soapy water spray bottle to locate the source of the leaks. Wrap the antenna and deck box electrical and dry air system cables in protective insulating plastic bags to prevent moisture and dirt contamination.

7.5.3. Perform a performance group test of the OE-82 antenna group in accordance with Reference 2.1 Provide a written report with itemized details to the MSCREP of all system work performed including the dry air system, any remaining discrepancies, and recommended course of action.

7.5.4. Disassemble antenna for painting in accordance with technical manual.

7.5.5. Remove all dirt, soot, corrosion, salt, and loose or flaking paint from the antennas and amplifiers with a mild grade detergent and soft bristle brush.

7.5.6. After allowing the antennas and amplifiers to dry sand them down using a fine grade sandpaper to remove any flaking paint, then feather edges. Clean the antennas and amplifiers to remove all paint dust and foreign matter.

7.5.7. Inspect antennas hybrid and dipole assemblies for corrosion. Repair or replace corroded assemblies

7.5.8. Clean the antenna slip rings and install new lubrication as required by the technical manual and NAVY PMS cards.

7.5.9. Reinstall the antenna group onboard the ship using new Stainless steel CRES 316 hardware and applying conductive antiseize to all bolt threads. Remake all connections, mechanical and electrical.

7.5.10. Weatherproof all connectors on the AM-6691A as follows:

a. Remove the old weatherproofing tape from the connectors.

b. Remove the old weatherproofing tape from the connectors.

c. Apply a small amount of silicon grease to the connector threads then re-connect them to the jacks.

d. Wrap insulation rubber tape around connector and cable so tape butts up to the amplifier chassis and extends at least four inches past the connector on the cable. Wrap vinyl tape in the opposite direction as that of the previous step, tightly over the rubber tape so tape butts up to the amp and extends at least six inches past the connector on the cable.

e. Apply two coats of Scotchkote liberally over the entire taped area allowing 30 minutes between coats.

7.6. Preparation of Drawings/Documentation: None

7.7. Inspection/Test:

7.7.1. The manufacturer’s rep. shall conduct a complete system operational performance test of the OE-82 Antenna Group prior to the start of any overhaul work and another test upon completion of overhaul work. The test shall also include an inspection and test of the dehydrator dry air system and lines to the deck boxes. All Tests shall be conducted in accordance with Reference 2.1 Chapter 4.0 in the presence of the MSCREP.

7.7.2. Bench test components following inspection and repair prior to reassembly.

7.7.3. Submit a written report of the pre/post overhaul test report to the MSCREP within 48 hours of testing. The test report shall delineate all conditions found including discrepancies with recommended further course of action and estimate to correct.

7.8. Painting:

7.8.1. Prime the AS-3018 and AM-6691A and apply two coats of finish paint type (Epoxy Polyamide haze gray formula 151) allowing time to dry between coats.

7.9. Marking:

7.9.1. Replace cable markers and antenna label plates with new.

7.10. Manufacturer’s Representative:

7.10.1. The contractor shall engage the services of a MFR. REP or qualified Technical Representative to conduct all testing and alignment of the OE-82C Antenna Group and assume all costs for same.

8.0 GENERAL REQUIREMENTS: None Additional

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