0107B_B__Kingpost_Support_Bracket_TALT_0819_-_13.doc

USNS LEROY GRUMMAN

(T-AO 195)

HULL STRUCTURE

N32205-14-R-1001

12 SEP 2012

ITEM NO. 107B

CATEGORY "B"

MSFSC/REC

RAS AND FAS KINGPOST SUPPORT BRACKETS (T-ALT 0819)

1.0

ABSTRACT.

1.1 This item describes the installation of main deck structural support brackets on the RAS and FAS kingposts. Repair shall be accomplished on all four corners of each kingpost.

2.0

REFERENCES.

2.1 MSC Drawing No. 600-7373410, T-AO 187 CLASS RAS & FAS KINGPOST SUPPORT BRACKETS.

2.2 NAVSEA DWG No. 101-6240476, T-AO 187 CLASS, GENERAL ARRANGEMENT MAIN DECK.

3.0 ITEM LOCATION/DESCRIPTION.

3.1 Location/Quantity:

3.1.1 Location: Various, Tank Deck, Stations 1, 2, 3, 4, 6, 7, and 8.

3.1.2 Quantity:

3.1.2.1 Two (2) Each RAS Stations, Four (4) corners on each Station.

3.1.2.2 Two (2) each FAS Stations, Four (4) corners on each Station.

3.2 Item Description/Manufacturer's Data: None.

4.0

GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES.

4.1 Government Furnished Equipment: None.

4.2 Government Furnished Material: None.

4.3 Government Furnished Services: None.

5.0 NOTES.

5.1 The contractor and all subcontractors, regardless of tier, are advised to review other work items under this work package to determine their applicability to this work item.

5.2 This item was written based on a shipcheck of the USNS LENTHALL (T-AO 189) and should be verified against ship’s configuration at each affected kingpost before implementation.

5.3 Cleaning and gas freeing (safe for men and safe for hot work) of the tanks in way of the kingpost repairs is to be accomplished under Work Item 0021 “Clean and Gas Free Tanks, Voids, Cofferdamnsand Spaces.

5.4 Unit Pricing of this item is to be inclusive of all staging in all tanks required to accomplish the repairs in way of inserts, sounding tubes, high level alarms and brackets.

5.5 Contractor is responsible for all procedures/work necessary to gas free and seal seal upon completion of work the effected Kingposts, as well as the protection of all equipment and machinery in the surrounding area of the affected Kingposts.

6.0 QUALITY ASSURANCE REQUIREMENTS: None additional.

6.1 All work performed shall be to the satisfaction of the ABS Surveyor, Port Engineer, and the Chief Engineer.

7.0

STATEMENT OF WORK REQUIRED.

7.1 Arrangements/Outfitting:

7.1.1 Relocations:

7.1.1.1 Relocate high level alarm and sounding tubes inboard 12", as necessary, to allow the installation of the underdeck stiffeners, using reference 2.1 as guidance. Final location is to be approved by ABS surveyor and MSC Representative.

7.1.1.2 Install staging to gain access to overheads to insert steel plates and under deck stiffners.

7.1.2 Contractor is to remove and reinstall all interferences required to accomplish the repairs.

7.2 Structural:

7.2.1 Removals:

7.2.1.1 Remove deck in way of the bracket insert plates installed in 7.2.2.1, using reference 2.1 as guidance.

7.2.2 Installations:

7.2.2.1 Install four insert plates per kingpost, located in way of each bracket installation, using reference 2.1 as guidance. The insert plate should extend beyond the high level alarm, relocated in 7.1.1.a, if applicable.

7.2.2.2.

Install the underdeck stiffeners beneath any unsupported kingpost bracket, using reference 2.1 as guidance.

7.2.2.3.

Install brackets, one at each corner as required. Brackets in way of kingpost-mounted air flasks may be altered so as not to interfere. Use reference 2.1 as guidance.

7.2.3 Submit a Unit Bid Price per Kingpost (Four (4) Total).

7.2.3.1 Unit Bid Price is to complete the required repairs per above scope of work at all four corners per Kingpost.

7.3 Mechanical/Fluid: None Additional.

7.4 Electrical: None Additional.

7.5 Electronics: None Additional.

7.6 Preparation of Drawings:

7.6.1 Prepare detailed installation drawings for all work accomplished in this item.

7.6.2 Prepare red line markups of drawings, which shall include but not be limited to general arrangements drawings and all applicable structural drawings.

7.7 Inspection/Test:

7.7.1 Obtain ABS approval for the insert and bracket installation.

7.7.2 Conduct non-destructive testing of welds.

7.8 Painting :

7.8.1 Paint all new and disturbed surfaces to match surrounding surfaces, both on deck and below the main deck.

7.9 Marking: None additional.

7.10 Manufacturer's Representative: None required.

8.0 GENERAL REQUIREMENTS: None additional.

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