11.20__WI_308.8_Replace_1SAS_-_2SAS_Bus_Tie_Cables_94967577.pdf

USS FRANK CABLE

(AS-40)

ELECTRICAL 14 March 2016 ITEM NO. 308. 8 Category “ A ” TMMG/GRILLS/DNG

REPLACE 1SAS TO 2SAS BUS TIE CABLES

301-1

1. 0 ABSTRACT

This item describes the requirements to replace “1SAS to

2SAS” bus tie cables with LSTSGU-400 cables.

2. 0 REFERENCES

2. 1 MSC Drawing 301-8496659, Rip Out & Replacement 1SAS-

2SAS Bus Tie Cables

2. 2 MSC Drawing 803-7081122, General Technical Requirements

(GTRs)

2. 3 IEEE Standard 45, Recommended Practice for Electric

Installations on Shipboard

3. 0 ITEM LOCATION/DESCRIPTION

3. 1 Location/Quantity:

3. 1. 1 Location

a. 1SAS Switchboard, Engine Room 5-110-0-E

b. 2SAS Switchboard, Engine Room 5-110-0-E

3. 1. 2 Quantity: None

3. 2 Item Description/Manufacturer’ s Data

3. 2. 1 Bill of Material

a. See Reference 2. 1.

b. Quantities are considered estimates. The

Contractor shall provide the exact quantities and additional material such as miscellaneous pipe fittings, elbows, caps, valves, pipe hangers, weld material, cable hangers, cable tags, buswork, etc. , which are not included in the List of Materials, in order to install a fully functional system which meets the requirements of this specification.

4. 0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES

4. 1 Government Furnished Material (GFM) :

Reference 2. 1 Item 1 Quantity 400’ Cable, LSTSGU-400 will be furnished as GFM, not IAF.

4. 2 Government Furnished Services: (GFS)

S ee

A B S W as hi ng to n Le tte r R ef T

D at ed

4- M

A Y -2

REPLACE 1SAS TO 2SAS BUS TIE CABLES

301-2

4. 2. 1 ABS surveyor onsite services will be provided and funded by MSC under a separate contract.

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 GTRs 1 through 7, 21. 22. 23, 24, 25, 26, 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.

6. 0 QUALITY ASSURANCE REQUIREMENTS

6. 1 All work performed shall be to the satisfaction of the onsite ABS Surveyor, MSC representative (MSCREP) , Port Engineer, and ship’ s Chief Engineer.

7. 0 STATEMENT OF WORK REQUIRED

7. 1 Arrangements/Outfitting

7. 1. 1 Remove all interference items necessary to accomplish the requirements of this Work Item. Mark, protect and properly store all interference items removed. Reinstall interference items and prove them operational when the requirements of this Work Item are complete.

7. 2 Structural

7. 2. 1 Removals

a. Remove all cable trough covers beneath and between the 1SAS and 2SAS Switchboards as necessary to remove and install the 1SAS to 2SAS Bus Tie cables. Mark, protect and properly store all cable trough covers and fasteners removed.

b. Once 1SAS-2SAS Bus Tie cables have been removed, protect remaining cables. Cut out the existing cableway penetration chaffing rings to the 1SAS and 2SAS Switchboards, and enlarge the existing cableway penetration openings to a width and

S ee

A B S W as hi ng to n Le tte r R ef T

D at ed

4- M

A Y -2

REPLACE 1SAS TO 2SAS BUS TIE CABLES

301-3 depth that allows for proper bend radius of the LSTSGU-400 cables and seating of the lugs to the bus bars using Reference 2. 3 as guidance.

c. Chip and grind all surfaces flush and smooth in way of enlarged cableway penetrations.

7. 2. 2 Installations

a. Provide, fabricate, and install new chaffing rings in the enlarged cableway penetrations prior to installation of new cables. Remove cable protection upon completion of chaffing ring installations and after the surrounding areas have cooled to room temperature.

b. Reinstall cable trough covers using new 316

CRES fasteners when the requirements of this Work Item are complete.

7. 3 Mechanical/Fluids: None additional

7. 4 Electrical

7. 4. 1 Accomplish all work required under this Work

Item using Reference 2. 3 as guidance.

7. 4. 2 Removals

a. Disconnect and remove designated 1SAS-2SAS bus tie cables from the 1SAS and 2SAS switchboards using

Reference 2. 1 as guidance. Remove all designated cables in their entirety.

b. Remove existing bus work and associated stiffeners and brackets using Reference 2. 1 as guidance. Mark, protect and properly store all stiffeners and brackets removed.

c. Dispose of removed material as directed by the MSCREP.

7. 4. 3 Installations

a. Install new bus work, stiffeners, brackets, insulators, and associated components in the 1SAS and 2SAS switchboards using Reference 2. 1 as guidance. Template all bus work to allow for clearances and requirements using Reference

2. 3 as guidance. Fabricate stiffeners and brackets as required to support bus work. Provide all material as required for a ee

A B S W as hi ng to n Le tte r R ef T

D at ed

4- M

A Y -2

REPLACE 1SAS TO 2SAS BUS TIE CABLES

301-4 complete installation.

b. Install new “1SAS to 2SAS” bus tie cables

(LSTSGU-400) with new crimp lugs and hardware using Reference

2. 1 as guidance. Provide all material as required for a complete installation.

7. 5 Electronics: None additional

7. 6 Preparation of Drawings/Documentation: None additional

7. 7 Inspection/Test

7. 7. 1 Inspections

a. Inspect all welds in accordance with the shipyard’ s Quality Assurance Plan. Deliver a copy of a report containing the results of all weld inspections associated with this work item to the MSCREP and the ship’ s Chief Engineer for approval. Where the MSCREP deems necessary, perform

Nondestructive Tests (NDT) at no additional cost to the

Government. MSC reserves the right to reject any welds based on a visual inspection, review of the inspection report, or result of the NDT.

b. Torque all lugs using Reference 2. 1, Installation Note I-3 as guidance. Notify the MSCREP and the

Chief Engineer to inspect torqueing. Mark all lugs once they are torqued and demonstrated to the Chief Engineer and MSC Rep.

c. Clean the 1SAS and 2SAS switchboards and cable troughs prior to final acceptance. Remove all dirt, dust, foreign objects and fabrication debris upon completion of removals, installations, modifications and repairs. Notify the

MSCREP and the Chief Engineer to inspect switchboards and cable troughs for cleanliness prior to final closeout and before energizing power panels and switchboards.

7. 7. 2 Tests

a. Test new bus tie cables in the 1SAS and 2SAS switchboards. Demonstrate continuity and insulation resistance readings, phase to phase and phase to ground to the satisfaction of the ABS Surveyor and the Chief Engineer.

ee

A B S W as hi ng to n Le tte r R ef T

D at ed

4- M

A Y -2

REPLACE 1SAS TO 2SAS BUS TIE CABLES

301-5

b. Apply rated loads across bus tie cables and perform a thermographic survey to verify system integrity to the satisfaction of the ABS Surveyor and the Chief Engineer.

7. 8 Painting

7. 8. 1 Paint all new and modified surfaces to match surrounding surfaces. Touch up all surfaces where paint was damaged in the conduct of work required under this work item to match surrounding surfaces.

7. 9 Marking

7. 9. 1 Fabricate and install new name plates, notices, cable tags, labels, and markings for all new or modified areas using Reference 2. 2, GTR No. 29 and as noted on referenced drawings.

7. 10 Manufacturer’ s Representative:

All switchboard work and cable connections shall be completed by a certified switchboard manufacturer.

8. 0 GENERAL REQUIREMENTS: None additional

S ee

A B S W as hi ng to n Le tte r R ef T

D at ed

4- M

A Y -2