0504_A_PORT_AND_STBD_RHIB_DAVIT_INSPECTION_REV-ARCTIC_1.docx

USNS ARCTIC

T-AOE 8

AUXILIARY MACHINERY N32205-18-R-4256

1 AUGUST 2017

ITEM NO. 504 Category “A” N756/CSI/PSR

PORT AND STBD RHIB DAVIT INSPECTION REV -

1.0 ABSTRACT:

1.1 This Work Item describes the requirement to perform the maintenance and testing (OEM, IMO and SOLAS) necessary for the re-certification of the Port & Stbd Side Single Point RHIB Davits(SPD).

2.0 REFERENCES

2.1 Technical Manual No. 80-817 for Model No. D6000FCTS Mfr. Allied Davits.

3.0 ITEM LOCATION/DESRCRIPTION:

3.1 01 Level Frame 435 Port and 410 STBD.

3.2 Quantity/Description:

3.2.1 Two (2) Model D6000FCTS Allied Systems Rescue Boat Davits.

3.2.2 Rated Capacity: Six-thousand (6,000) lbs.

3.2.3 Maximum Dynamic Test Load: Seven-thousand-two-hundred-fifty (7,250) lbs.

3.2.4 Maximum Static Test Load: Eleven-thousand-six-hundred (11,600) lbs.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1 Government Furnished Equipment: None.

4.2 Government Furnished Material:

4.2.1 Accumulators, PN 235611; QTY: 8

4.2.2 CT5 SOLAS Winch, PN 67261; QTY: 2

4.2.3 Capscrew (Certified), PN 245130; QTY: 62

4.2.4 Capscrew (Certified), PN 245132; QTY: 8

4.2.5 Washer, PN 2518353, QTY: 126

4.2.6 Capscrew (Certified), PN 245131; QTY 28

4.3 Government Furnished Services: None.

5.0 NOTES:

5.1 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.

5.2 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.

6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional.

7.0 STATEMENT OF WORK REQUIRED:

7.1 Tag-Out all required systems and equipment. Drain and dispose of any liquids/solids in accordance with all federal, state, and local regulations.

7.2 Provide all labor and materials to accomplish work under this item.

7.3 Provide staging on port and starboard RHIB davits to accomplish the work described in the requirement.

7.4 Prior to starting any other work the technical representative shall visually inspect all hoisting equipment, hoisting fittings and slings to determine any apparent weakness in the fittings or in their attachment to the boats and to determine whether all parts appear to be in operable condition.

7.5 Following completion of the visual inspection the technical representative with the assistance of ships force shall test operated Safety Boat Davit (SBD), for the purpose of checking system pressures and operating safeties. Proper operation in all modes shall be verified. Submit an “as-found” condition report following preliminary visual and operational inspections along with recommendations for repairs not covered in this work item.

7.6 Remove RHIB Boats from respective davits. RHIB boats shall be stowed and covered with protective covering at a location within the contractor’s facility. Return boats to davits at completion of all maintenance and certifications.

7.7 Perform the following maintenance:

a. Grease all davit components.

b. Install and slush new winch cables for each davit.

c. Remove constant tension winch(s) from both port and starboard davits. Install new GFM constant tension winch(s) at both locations.

d. Remove accumulators from both davit locations and install GFM accumulators.

e. Remove all base cap screws and replace with new GFM cap screws. Base screws shall be replaced one at a time.

f. Change oil on winch gear and swing gear reducer.

g. Rebuild brakes on both winches.

7.8 Inspection/Testing:

7.8.1 (CHECKPOINT) In the presence of the Military Sealift Command Representative (MSCREP) and the American Bureau of Shipping (ABS) surveyor perform 1.1 time rated load weight test and operational checks of all systems per OEM, SOLAS, and IMO requirements. Set and demonstrate all safety devices and pressure regulators. Acceptance Criteria: All systems are to function to OEM requirements as described in Reference 2.2.

a. The technical representative shall make all adjustments and oversee any repairs.

b. Lower rated weight. Stop and hold the weight 6" above the water for 5 minutes without slippage.

c. Raise the weight and swing each Davit in and out.

d. Stow weight and repeat steps a through c, 3 times.

e. Demonstrate Constant tension winch functions and controls.

f. Submit a written report of all tests and inspections; deliver three copies of certification data stating IMO and SOLAS requirements have been met to the MSCREP and ABS surveyor within twenty-four (24) hours.

7.9 Painting:

7.9.1 Perform an SSPC-SP-11 to ten (10) SqFt of the davit and a SSPC-SP-3 to the remainder. Just prior to applying any coatings accomplish an SSPC-SP-1. Coat davits and painted surfaces of control equipment with one (1) coat of marine grade epoxy and one (1) coat of urethane to match existing paint scheme.

7.10 Manufacturer’s Representative:

7.10.1 A certified OEM representative for the Davit shall be present for all testing and repair work on the Davit

7.11 Preparation of Drawings: None.

8.0 GENERAL REQUIREMENTS: None Additional.

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