0404_A_ Antenna Preventative Maintance_ARCTICROH14R2.doc

USNS ARCTIC

(T-AOE 8)

COMMUNICATION & NAVIGATIONAL AIDS RFP NO. N32205-14-R-2000

Ammendmant 001

ITEM NO. 404 CATEGORY “A” MSC/PM1CM2/JB

ANTENNA PREVENTATIVE MAINTENANCE

1.0 ABSTRACT:

1.1 This work item describes the requirement to clean and refurbish the whip and dipole antennas, associated couplers/tuners and amplifiers listed in 3.1.

2.0 REFERENCES:

2.1 NAVSEA Antenna Arrangement Drawing 441-6362911

2.2 90 NAVY PMS card 4400, MRC U-11; for dipole antennas

2.3 USNS ARCTIC Antenna arrangement (available via OIC)

NOTE:

Contractor must have access to latest version of above Navy PMS cards

3.0 ITEM LOCATION/DESCRIPTION:

3.1 Location/Quantity:

3.1.1 Six (6) whip antennas with four (4) associated AN/URA-38/RF-601 or Antenna Term box

112' ABL

3.1.2 AS-2815, Quantity four (4) with associated amplifier/converter 6534/SSR-

3.1.3 AS-1735/SRC, Quantity two (2)

3.2 Item Description/Manufacturers Data: None

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None

5.0 NOTES:

5.1 The contractor and all subcontractors, regardless of tier must 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 GTR’s including but not limited to GTR’s 1-7, 22, 23, 24,28 and 29.

5.2 The contractor and all subcontractors, regardless of tier, are advised to review all other Work Items under this contract to determine their effect on the work required under this Work Item. Many of the definitions relating to the performance of this work item are found in Work Item 001.

5.3 Manufacturer’s representative must meet the security clearance requirements to access secure communication spaces.

6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional

7.0 STATEMENT OF WORK REQUIRED:

7.1 Arrangements/Outfitting: None Additional

7.2 Structural: None Additional

7.3 Mechanical/Fluids: None Additional

7.4 Electrical:

7.4.1 Tag out all radio transmitters in accordance with contractor and MSC Electrical safety regulations. Notify the electrical tag out officer for annotation in the ship’s tag log book.

7.4.2 Upon completion of antenna overhaul and reinstallation clear the tag out and once again notify the ship’s tag out officer to clear the log book.

7.5 Electronic:

7.5.1 Tag all antennas and cables to ensure reinstallation in proper location. Identify and tag all antenna sections disassembled to ensure they are reassembled with original matching sections.

7.5.2 Temporarily remove antennas and couplers to shop.

7.5.3 Perform maintenance and testing on antennas and couplers in accordance with References 2.0. Ensure that all cable connector ends are weatherized to prevent element intrusion while disconnected from the antenna or coupler.

7.5.4 Clean, inspect and paint four (4) AN/URA 38 Couplers. Replace gauge on each unit. Replace gasket, pressure all 4 units. Perform an operational test on all AN/URA-38 couplers in accordance with the manufacturer’s technical manuals. Perform visual inspection of couplers and test the nitrogen pressure in each. Submit pressure test results to the MSCREP in writing within 48 hours of testing.

7.5.5 Accomplish SSPC-SP-11, Power Tool to Bare Metal, the top and bottom of the antenna foundations and coupler platforms to remove all scale, rust, and corrosion. Clean the equipment, removing all dirt, grime, corrosion, and salt spray. Apply anti-seize compound to the inside threaded surfaces of the antennas and reassemble the antennas.

7.5.6 Apply two (2) coats of epoxy gray (NSN 8010-01-350-4741) paint to the surfaces of the antennas and couplers.

7.5.7 Reinstall antennas and couplers in original locations with new gaskets. Replace missing corona shields, and mount antennas to foundations with stainless steel hardware.

a. Contractor shall provide and replace missing, or deteriorated bond straps with stainless steel and install in accordance with MIL-STD-1310(G).

b. The contractor shall provide and install new CRES 316 Stainless steel hardware, i.e. nuts, bolts, flat and lock washers to mount all antennas. Apply a liberal coating of conductive anti-seize to all bolt threads.

c. Install new weatherproof heat shrink material around the whip antennas mid section where they screw together after satisfactory inspection by the Clean, inspect and paint four (4) AN/URA 38 Couplers.

d. Replace gauge on each unit. Replace gasket, pressure all 4 units.

e. Perform an operational test on all AN/URA-38 couplers in accordance with the manufacturer’s technical manuals.

f. Perform visual inspection of couplers and test the nitrogen pressure in each. Submit pressure test results to the MSCREP in writing within 48 hours of testing.

g. Reconnect antenna/coupler leads to antennas, and weather-seal all connections at the antenna and coupler using vinyl electrical tape, self vulcanizing rubber tape, and 3M type weather sealer.

7.6 Preparation of Drawings:

7.6.1 The contractor shall provide a NAVSEA qualified source to provide NAVSEA “Antenna photographs” of USNS ARCTIC at sea. Provide 7 Accurate color copies of Antenna Photographs. Photographs should be taken during Yard sea trials if local, otherwise to be take upon return of vessel to Norfolk after yard period. Delivery of photographs shall be with 20 days of sea trial.

7.7 Inspection/Tests:

7.7.1 Do not megger dipoles. Additionally, the contractor shall perform a live operation and VSWR test of all antennas using the parent Transmitter and independent thru-line test set.

a. Two (2) system operations tests shall in accordance with Reference 2.2, to be conducted; One (1) prior to antenna removal and another upon the reinstallation of overhauled antennas. Record and submit test results to MSCREP in writing within 48 hours of the test procedure. Test deficiencies shall be reported to the MSCREP with report of further recommended action required.

b. The contractor shall contact the Sealift Logistics Command REP upon completion of reassembly of the antennas for inspection prior to reinstallation.

7.8 Painting:

7.8.1 Apply two (2) coats of primer, One (1) Stripe Coat, and One (1) finish coat of paint to match surrounding areas to antenna foundations.

7.9 Marking:

7.9.1 Replace all missing or damage Antenna name plates, with like size, shape and material of existing antenna name plates in accordance with GTR 29

7.10 Manufacturers Representative:

7.10.1 The contractor shall engage the services of a qualified Electronic COMM Systems representative (authorized manufacturer's technical representative) to perform all work in this spec item.

8.0 GENERAL REQUIREMENTS: None Additional

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