0120_B_STRUCTURAL_REPAIRS_Rev1.docx

USNS TRENTON (T-EPF 5)

STRUCTURAL REPAIRS

1.0 ABSTRACT

1.1 This item describes miscellaneous aluminum welding requirements.

2.0 REFERENCES:

2.1 8443364 General Arrangement and Profile Drawing

2.2 8443385 Corrosion Prevention and Control Plan

3.0 ITEM LOCATION/DESCRIPTION:

3.1 Location/Quantity

3.1.1 Various

4.0 GOVERNMENT FURNISHED EQUIPMENT/ MATERIAL / SERVICE: 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 GTRs.

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 0001.

6.0 QUALITY ASSURANCE REQUIREMENTS:

6.1 All Welding shall be in accordance with ABS Code for High Speed Naval Vessels.

7.0 STATEMENT OF WORK REQUIRED:

7.1 Contractor shall prepare by cleaning for weld repair forty (40 ea) crack repairs 250mm in length, 8mm Plate. Type Aluminum Alloy 5083-H116/H111, ABS/IACS Certified. Twenty (20) each shall be quoted for vertical and twenty (20) each quoted for horizontal.

Vertical

Horizontal

7.2 Contractor shall prepare by cleaning for weld repair forty (40 ea) crack repairs 250mm in length, 8mm Plate. Type Aluminum Alloy Aluminum Alloy 6061-T6, ABS/IACS Certified. Twenty (20) each shall be quoted for vertical and twenty (20) each shall be quoted for overhead.

Vertical

Horizontal

7.3 Contractor shall quote for this work item, weld repair for Twenty-Five Square Feet (25 sq ft / 2.32 sq m) of each thickness 10mm, 8mm, 6mm totaling Seventy-Five Square feet (75 sq ft/ 6.96 sq m) for welding insert. Type Aluminum Alloy 5083-H116/H111 ABS/IACS Certified.

Weld Repair Insert, Aluminum 5083–H116/H111, 25 Square Feet of Each Thickness

10 mm

8 mm

6 mm

7.4 This Item shall include cleaning, grinding, staging, rigging, and preparation for welding, weld repair and NDT.

7.5 Perform MSCREP and ABS inspections prior to and during repair.

7.6 Weld procedure if required by Regulatory Body shall be additional by approved Change Order.

7.7 Furnish a comprehensive hard copy and electronic Report for each weld repair to include photos, vessel drawing location using reference 2.1, and repair detail.

7.8 All welds shall include non-destructive testing (NDT) upon completion.

7.9 Restore all disturbed lagging and isolation to like new condition.

8.0 GENERAL REQUIREMENTS: None

0120-2