0107_A_REPLACE_REPAIR_SURVEY_WATERTIGHT_DOORS_ARCTICROH20_REV1.docx

USNS ARCTIC

(T-AOE 8)

REPLACE/REPAIR/SURVEY WATERTIGHT DOORS REV 1

1. ABSTRACT:

0. This item describes the requirements to perform water tight door maintenance which includes replace/repair and survey of various watertight doors throughout the vessel.

1. REFERENCES:

1. NAVSEA Drawing 085-6363081, Rev B, USS Arctic SRD Booklet of General Drawings.

1. NAVSEA Drawing 167-6361161; List of Steel Doors

1. NAVSEA Drawing 167-6361160, Rev L; List of Hatches and Scuttles.

1. NAVSEA Drawing 601-6363091; Selected Record Drawing Compt, Access & Deck Support Second Deck.

1. NAVSEA Drawing 601-6363092; Selected Record Drawing Compt, Access & Deck Support Main Deck.

1. NAVSEA Drawing 601-6363093; Selected Record Drawing Compt Access & Deck Support 01 Level.

1. NAVSEA Drawing 601-6363094; Selected Record Drawing Compt Access & Deck Support 02 Level

1. NAVSEA Drawing 601-6363095; Selected Record Drawing Compt Access & Deck Support 03 Level

1. NAVSEA Drawing 601-6363096; Selected Record Drawing Compt Access & Deck Support 04 Level & Abv.

1. Surface Preparation Standard, SSPC-SP-10, NEAR WHITE METAL BLAST CLEANING (CONTRACTOR OBTAIN)

1. Surface Preparation Standard, SSPC-SP-3, POWER TOOL CLEANING (CONTRACTOR OBTAIN)

1. MSC Standard Item 96, “Watertight Closures, Shop Repair”

1. NAVSEA TM S9169-AW-DCB-010; Watertight Closure Installation and Maintenance

1. ITEM LOCATION/DESCRIPTION:

2. Watertight doors (WTDs), and Watertight Hatches

1. GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None

1. NOTES:

4. The contractor and all subcontractors, regardless of tier, must consult the General Technical Requirements 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 through 7 and 24.

4. The contractor and all subcontractors, regardless of tier, are advised to review the 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.

1. QUALITY ASSURANCE REQUIREMENTS: None Additional

1. STATEMENT OF WORK REQUIRED:

6. Perform a survey of ship-wide exterior water tight doors only. The doors listed in Paragraph 3.0 should not be included in the survey. The doors shall be inspected for:

0. Missing or damaged wedges.

0. Holes.

0. Warpage, creases or irregular shaping.

0. Damaged or inoperable individual dogs.

0. Damaged or inoperable quick acting mechanisms.

0. Holes in steel above or below door.

7.1.1 Submit a condition report for any/all findings from inspection. The condition report shall contain the following information:

a. Door Number

b. QAWTD or Individual Dogged.

c. Repair recommendation.

0. Repair of doors included in the condition report shall be subject to a contract change order.

6. Accomplish Water Tight Door (WTD) replacements using References in 2.0 for guidance.

6. Replace WTD Doors listed in 3.0, all replacement doors shall be supplied with latest MachAlts; at a minimum all doors shall have MachAlt 538 and MachAlt 526 for exterior doors.

2. Contractor will procure closures with a factory finish suitable for application of the paint system described below

2. For weather deck doors provide temporary closure to protect the vessel’s interior and to maintain climate controlled conditions during the period that the closure is removed. Closures for deck openings shall be able to support 30 pounds per square foot. Closures for doors shall be hinged so as not to impede personnel flow and shall be securable.

2. At each location the contractor shall take all precautions to protect surrounding areas from damage and degradation.

2. Door panels, door components requiring preservation, and door frames shall be painted (except for edges) prior to installation inside a paint booth at the contractors shop.

2. Contractor shall disassemble new closure in preparation for applying paint system.

6. (CHECKPOINT) The MSC Paint Rep shall inspect and approve the surface preparation from the vendor prior to application of any coating.

3. Mask off portions of the door not requiring preservation.

3. Perform an SSPC-SP-1 on all areas to be painted.

3. Watertight closures shall be coated with one coat of inorganic zinc primer followed by one coat of epoxy A.C., and one topcoat of to all required surfaces. The topcoat color and paint type shall match the removed WTD colors.

2. (CHECKPOINT) The MSC Paint Rep shall inspect and approve each coat of paint prior to the application of the successive coat.

3. Match all parts and prepare door frame for installation onboard ship.

6. Install protective measures in way of all work to protect decks and equipment.

6. Accomplish the following test to the repaired doors:

5. (CHECKPOINT) Perform a chalk test on all closures prior to final tightness test. The impression of the knife-edge shall be continuous around the closure and shall be centered on the gasket.

5. (CHECKPOINT) Watertight closures located on weather decks or exterior bulkheads shall be hose tested. A 1-1/2 inch hose with not less than 70 PSI water pressure shall be directed all around the closure from a distance of not more than 10 feet. The water shall be applied from the weather deck side of the closure. The stream of water shall be moved slowly to ensure that the entire sealing surface, particularly the butt joint, is subjected to the full force of the water. No leakage shall be allowed.

5. (CHECKPOINT) Watertight closures located within the vessel's interior shall be soap and air tested in lieu of being hose tested. Compressed air of not less than 90 PSI shall be directed all around the closure from a distance of not more than 1 Foot. From the opposite side of the closure, a soapy water solution or a commercially available leak indicating solution shall be liberally applied to the gasket to indicate leaks. The stream of air shall be moved slowly to ensure that the entire sealing surface, particularly the butt joint, is subjected to the full force of the air. No leakage shall be allowed.

5. All tests shall be witnessed and approved by the MSCREP and the ABS Surveyor.

NOTE:

Neither hammers, mauls, or materials of like intent nor cheater pipes more than one foot in length shall be used to operate the dogs for securing the closure for testing. Use of force greater than that normally expected from one man, utilizing a one-foot cheater pipe would be grounds for rejecting the tests.

6. Renew all disturbed, soiled, missing, and removed insulation resulting from work accomplished in this item.

6. Feather disturbed areas into sound paint then prime and paint all new, soiled and disturbed areas to match surroundings

6. Remove all debris generated in the performance of this item and leave the area in a clean and ready to use condition.

6. Preparation of Drawings: None Additional

6. Manufacturer's Representative: None Additional

1. GENERAL REQUIREMENTS: None Additional

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