501_A_SPARE_SSTG_Turbine_Rotor_Inspect(ABS).doc

USS MOUNT WHITNEY

(LCC-20)

MACHINERY, AUXILIARY

N32205-19-R-XXXX

6 DECEMBER 2018

WORK ITEM NO. 501 CATEGORY "A"

MSC N754/BARTON/DLB

SPARE SSTG TURBINE ROTOR REPAIRS (ABS)

1.0 ABSTRACT:

1.1 This item describes the requirement to inspect the Spare Steam Turbine Rotor, Diaphragms, Guide Blade Assembly, Bull Gear and Pinion for the Ship Service Turbine Generators (SSTG) for the LCC Class Cessels.

2.0

REFERENCES/ENCLOSURES:

2.1 Technical Manual S9311-BP-MMM-010, Turbine Generator Units; 2000KW AC Geared 3.0

ITEM LOCATION/DESCRIPTION/QUANTITY:

3.1 Equipment:

3.1.1 SSTG Turbine (1 ea.):

Mfr: Worthington Corporation

Model: LJ106200 Drawing: LJ106200 3.2 SSTG Turbine Rotor Rotor, Diaphragms, Guide Blade, Bull Gear and Pinion:

PIECE#

QTY

DESCRIPTION

PART #

1 1

TURBINE ROTOR ASSEMBLY

LH-106220

2 1

TURBINE DIAPHRAGM

LE-106359

3 2

TURBINE DIAPHRAGM

LE-106360

4 1

TURBINE DIAPHRAGM

LE-106361

5 1

TURBINE DIAPHRAGM

LE-106362

6 1

TURBINE DIAPHRAGM

LE-106363

7 1

GUIDE RING ASSEMBLY

LE-106353

GEAR & PINION ASSEMBLY

LC-106250

4.0 GOVERRNMENT FURNISHED MATERIAL/SERVICES:

4.1 Government furnished Material:

4.1.1 SSTG Turbine Rotor Rotor, Diaphragms, Guide Blade, Bull Gear and Pinion:

PIECE#

QTY

DESCRIPTION

PART #

1 1

TURBINE ROTOR ASSEMBLY

LH-106220

2 1

TURBINE DIAPHRAGM

LE-106359

3 2

TURBINE DIAPHRAGM

LE-106360

4 1

TURBINE DIAPHRAGM

LE-106361

5 1

TURBINE DIAPHRAGM

LE-106362

6 1

TURBINE DIAPHRAGM

LE-106363

7 1

GUIDE RING ASSEMBLY

LE-106353

8 1

GEAR & PINION ASSEMBLY

LC-106250

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, 22, 23, and 29.

5.2 The contractor and all subcontractors, regardless of tier, are advised to review all 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.

5.3 All material listed in 3.2 is currently located at the MSC W-143 Warehouse. The government will ship the material to the Contractor’s Repair Facility. Once the repairs are complete the Government will arrange for shipment of the material from the Contractor’s Facility back to the MSC W-143 Warehouse.

6.0

QUALITY ASSURANCE REQUIREMENTS:

6.1 The requirements of this Work Item shall be accomplished to the satisfaction of the MSCREP.

6.2 The requirements of this Work Item shall be accomplished in accordance with current ABS Regulatory Body rules and regulations.

7.0 STATEMENT OF WORK:

7.1 Arrangement/Outfitting:

7.1.1 Contact the MSCREP (David Barton, (757)462-2539, david.barton1@navy.mil) to make arrangements for shipment of the materials from the W-143 Warehouse to the contractors facility. Provide the following information:

Delivery Address Point of Contact

Phone # for Point of Contact

Hours of operation for the Receiving Facility.

7.1.2 When repairs are complete, separately package each item for long term storage. The shipping containers shall meet the requirements for overseas shipment.

7.1.2.1 Fabricate and install a label on each side and top of each shipping container with the following information:

MSC LCC CLASS VEESSEL SHORE BASE SPARES

REQUISITION #: N21637_________

(Quantity) Description of Contents

WEIGHT: ____ LBS

CUBE: __” X __” X __”

7.1.3 Noltify the MSCREP (David Barton, (757) 462-2539, david.barton1@navy.mil) when all items are ready for return shipment. Provide the following information:

Pickup Address

Point of Contact

Phone # for Point of Contact

Hours of Operation for Pickup Facility Weight of each Item to be Shipped

Cube of each Item to be Shipped

7.2 Mechanical:

7.2.1 Clean all items listed in 3.2 for inspection using Reference 2.1 for guidance.

7.2.1.1 Blast the Rotor, Diaphragms and Guide Ring Assembly using a blast media that DOES NOT remove any base metal.

7.2.1.2 PROTECT all machine surfaces of the Rotor, Diaphragms and Guide Ring Assembly prior to blasting.

7.2.2 Accomplish a detailed inspection of each item listed in 3.2 for the suitability of further service using Reference 2.1 for guidance. Take and Record all critical dimensions for each item listed 3.2 unsing Reference 2.1 for guidance.

7.2.3 Place Turbine Rotor in a lathe and take all critical dimensions for shaft runouts, bearings journals, etc using Reference 2.1 for guidance.

7.2.4 Accomplish all required NDT inspections on each item listed in 3.2 in the presence of the MSCREP and ABS Surveyor using Reference 2.1 for guidance.

7.2.5 Submit a typed written report to the MSCREP listing the results of the inspections accomplished in 7.2.2 thru 7.2.4. The report shall provide the “As Found” conditions for each item listed in 3.2. Identify any repairs required to restore each to a Class “A” Condition ready for issue.

7.2.6 The MSCREP will provide direction in writing to accomplish any repairs identified during the inspection accomplished in 7.2.2 thru 7.2.4. Any additional cost to accomplish repairs will be the subject of a change order to the contract.

7.2.7 When all repairs are complete accomplish a high speed balance of the Turbine Rotor to full design operational speed using Reference 2.1 for guidance. The high speed balance shall witnessed by the MSCREP and ABS Surveyor.

7.2 Documentation:

7.3.1 Submit a typed written report to the MSCREP providing the “As Released” condition for each item listed in 3.2 (with photographs) recording all conditions, repairs, NDT’s, balancing, alignments, clearances, post repair test results and verification of Class “A” Condition ready for Issue.

7.4 Manufactures Representative:

7.4.1 Provide the services of an OEM Recogonized Repair Facility to accomplish the requirements of this work item. The following are OEM Recogonized Repair Facilities for the requirements of this work item:

Cutriss-Wright

1101 Cavalier Blvd

Chesapeake, Virginia 23323

POC: Bryan Murphy

Phone: (757) 592-0973

E-mail: bryan.murphy@siemensgovt.com MI-Tech Inc.

6685 Jet Park Road

North Charleston, SC 29406 POC: Bill Totten

Phone: (843) 553-2743

E-mail: bill@mi-tech.net PJ Schwalbenberg & Associates Inc

26 Spear Mill Road

Cushing, Maine 04563

POC: Pete Schwalbenberg Phone: (207) 354-0700

E-mail: office@turbinesandgears.com

8.0 GENERAL REQUIREMENTS: NONE

501-3