0125_A_Main_Deck_Steel_Renewal_REV-1.pdf

USS MOUNT WHITNEY

(LCC-20)

HULL STRUCTURE RFP N32205-16-R-4601

AMEND 0003 31MAY16

ITEM NO.0125 Category ‘‘A’’ MSC/N74/LCM

MAIN DECK STEEL REPAIR

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1.0 ABSTRACT

1.1 This item describes the steel renewal for the main

deck Frame 83 -- 85 Starboard Side, Frame 50 -- 60 Port

Side and Frame 43 -- 47 Port Side.

2.0 REFERENCES/ENCLOSURES:

2.1 REFERENCES

2.1.1 NAVSEA 845-4458934 Rev U, Booklet of General

Plans AMEND 0002

2.1.01 G1030-0084 REV D ‘‘Assured Power General

Arrangement’’ AMEND 0002

2.1.02 ABS Rules for Building and Classing Steel

Vessels, 2015

2.1.03 ABS Pub 87 SHIPBUILDING AND REPAIR QUALITY

STANDARD FOR HULL STRUCTURES DURING CONSTRUCTION

2.1.04 Thickness Measurement Report Dated September

2.1.05 MSC PAINT HANDBOOK

2.2 ENCLOSURES

2.2 Thickness Measurement Report Dated 2015

3.0 DESCRIPTION/QUANTITY:

3.1 All work will be performed at Frame 83 -- 85

Starboard Side, Frame 50 -- 60 Port Side and Frame 43 -- 47

Port Side on the main deck and surrounding compartments.

3.2 Quantity: Approximately 10,000 lbs. of steel plate

and shapes.

3.3 Quantities listed are considered estimates, within

10%. The contractor shall provide the exact quantities and additional material such as miscellaneous fittings, weld material, hangers, labels, etc.

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4.0 GOVERNMENT FURNISHED MATERIAL/EQUIPMENT/SERVICES:

4.1 Government Furnished Material (GFM): All coatings --

as required.

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, including but not limited to GTR 1-7, 22, 23, 24, 28 and 29.

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 001.

5.3 The USS Mount Whitney is known to have a

considerable amount of asbestos. Additionally, it is known that the coating systems may contain lead. The contractor should expect this condition and factor in removal and remediation time requirements into his overall planning schedule. Costs associated with unexpected hazardous waste remediation and removal shall be attributed to Work Item 023, rather than to the individual work items. Wastes removed in the course of work package accomplishment shall be removed from the ship, handled and disposed of in accordance with Work

Item 023 of this work package. Contractor shall be responsible to follow all international, national and US Federal regulations in the containment and removal of these wastes as encountered.

5.4 The contractor is expected to use best management

practice to identify and dispose of all hazardous waste. Every effort shall be made to minimize the disturbance, removal and handling of hazardous wastes in the accomplishment of the work package.

5.5 The contractor shall submit ABS certifications for

plate and shape steel to be used in this Work Item prior to commencement of work.

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6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional

7.0 STATEMENT OF WORK

7.1 Arrangements/Outfitting

7.1.1 This work item does not necessarily identify all

interferences or boundaries. The Contractor is responsible for the identification and resolution of all interferences and boundaries affecting the accomplishment of this work item. The

Contractor shall temporarily remove, relocate, alter, and reroute all interferences, mechanical, electrical, furnishings, insulations and/or misc. equipment to facilitate the completion of this work item. All interferences shall be reinstalled using contractor furnished hardware, fasteners, gaskets, seals, O-Rings, thermal and acoustic insulation, etc.

7.1.2 In accordance with guidance provided in Work Item

0016, para 7.5, contractor shall establish fire watches for all boundaries areas affected by any welding, burning or cutting activities.

7.1.3 The Contractor shall remove all false overheads

and supports within the CHIEF OF STAFF CABIN 2-52-2-L and 2-

58-4-L. The Contractor shall install all new false overheads within the two spaces listed. Prior to installation the

Contractor shall receive MSCREP approval regarding the type & color of new material to be installed. All material shall be marine grade. AMEND 0003

7.2 Structural

7.2.1 Removals

a. Using Enclosure 2.2.1 FOR GUIDANCE, remove all material identified as ‘‘RENEW or ‘‘SUBSTANTIAL’’.

b. Steel plate and shapes are to be cropped back to sound material. Other adjacent spaces may also require preparation or repair. Adjacent spaces include:

GUN RPR STORAGE 1-82-1-Q

COMPONENT PLANNING CENTER 2-76-2-L

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DESRON 60 OFFICE 2-47-2-L

CHIEF OF STAFF CABIN 2-52-2-L

CHIEF OF STAFF CABIN 2-58-4-L

HEAD 2-58-6-L

LINEN LOCKER 2-52-4-L

PASSAGEWAY 2-52-4-L

PASSAGEWAY 2-40-01-L

CLEANING GEAR LOCKER 2-40-0-L

HEAD 2-43-2-L

DESRON 60 STATEROOM 2-41-2-L

DIVISION CABIN #3 2-44-2-Q

HEAD 2-45-4-1-L

7.2.2 Plans for steel removal (sketches or other

supporting documents) shall be approved by MSCREP and ABS prior to production. Coordinate this work with other Work

Items in this work package.

7.2.3 Installations

a. Replace steel removed in 7.2.1 with ABS Grade A or B Steel having a plate thickness equal or greater than the original plate thickness as well as longitudinal/transverse structure as deter-mined by MSC and ABS. 100 Hundred Lbs. of clad weld and grinding will be provided to correct lo-calized areas of corrosion. Power Tool Clean to

Bare Metal all weld seams, and disturbed surfaces to SSPC-SP11. Final surface shall have a profile which complies with Pant Manufactures require-ments.

b. Installation is to comply with reference 2.1.2 and

2.1.3. Reference 2.1.04 and 2.1.5 is are AMEND 0002

provided for INFORMATION. The Contractor is re-sponsible for verifying dimensions and arrange-ments prior to work. Note that the work will re-quire some areas in adjacent spaces to be prepared and/or renewed after the work. Extend 6 inches in-to Spaces where plating has been removed next to the adjoining bulkhead.

c. Welding Procedures and installation details are to be preapproved by MSCREP and ABS.

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d. Sequence all work with other Work Items for the same area, including renewal of the Stern Tube and related efforts.

7.3 Mechanical/Fluids: None Additional

7.4 Electrical: None Additional

7.5 Electronics: None Additional

7.6 Preparation of Drawings/Documentation: None Additional

7.7 Inspection/Test

7.7.1 All steel removals and installations are to be

approved by the ABS Surveyor or MSCREP prior to removal.

7.7.2 Prior to start of continuous welding the

contractor shall call out ABS Surveyor and MSCREP for fit-up survey. After obtaining approval from MSCREP or

ABS Surveyor the contractor may proceed with welding.

7.7.3 Groove welds shall be used for all weld seams

of new plates and structural members. Contractor shall back-gouge the initial weld seam and call out MSCREP and

ABS Surveyor for back-gouge survey. After obtaining approval from MSCREP and ABS Surveyor the contractor may proceed with welding.

7.7.4 All new and disturbed weld seams shall be Non

Destructive Tested (NDT) in the presence of MSCREP and the ABS Surveyor.

7.7.5 If required, tank testing shall be carried out

in accordance with ABS rules and be witnessed by MSCREP and ABS Surveyor.

7.8 Painting

7.8.1 New plates and structural members shall be

abrasive blasted to SSPC SP-10 to near white metal in shop. Contractor shall apply one 5-6 mils coat of GFM

PPG 240 Red Primer on blasted surfaces except 1-inch from the weld seams.

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7.8.2 Apply Non-Skid to all areas of new main deck

plating.

7.8.3 Upon completion and acceptance of all

structural work and tests, grind all weld splatter and sharp edges. Power Tool Clean to Bare Metal all weld seams and disturbed surfaces to SSPC-SP11. The surface of the weld seams shall have a profile in accordance with the Paint Manufacturers requirements. Spot grind heavy layers of burnt paint down to bare metal. Apply a stripe coat, which is in addition to base coating system, to all limber holes, snipes, corners, weld seams or other areas where paint thinning can take place. Coat weld seams using GFM PPG 240 Red Primer. Feather the edges of existing paint, prime and paint all disturbed surfaces to match in accordance with Reference 2.1.05.

7.9 Marking

7.9.1 Provide label plates and stencils matching

removed material.

7.10 Manufacturer’s Representative: None Additional.