0202_A_PROPULSION MOTOR PORT DE BEARING HOSE REPLACEMENT (C3 CASREP 26-034).docx

USS Hershel Woody Williams

( ESB 4 )

ABSTRACT

The purpose of this item is to replace the Port DE bearing jacking hose.

REFERENCES

Tech Manual S9235-AK-MMC-010, Propulsion Motor, Synchronous, Motor Design M3-HXD 300-190/20 Tech Manual SE010-CZ-MMC-010, Propulsion Motor Slide Bearings, Type SCNFQ 56-560 (DE) and SCNFQ 56-560K (NDE) NASSCO Drawing No. 27133545, Propulsion Motor DE Bearing NASSCO Drawing No. 27133546, Propulsion Motor NDE Bearing

ITEM LOCATION/DESCRIPTION

Location/Quantity Locations Machinery Room 2 (5-56-2)

1.1.1 Quantity

One DE RENK Propulsion Motor Pedestal Journal Bearing.

Item Description/Manufacturer’s Data Manufacturer: RENK Model Number: DE Bearing Type SCNFQ 56-560 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE: None.

NOTES

THIS SHIP CONTAINS HIGH VOLTAGE (HV) ELECTRICAL SYSTEMS. OBEY ALL POSTED AND VERBAL INSTRUCTIONS REGARDING SAFETY AND EXCLUSION FROM HIGH VOLTAGE AREAS. AT NO TIME APPROACH, WORK ON, OR ENTER A HIGH VOLTAGE AREA WITHOUT PROPER AUTHORIZATION.

THE T-ESB CLASS ELECTRICAL COLOR CODING DOES NOT FOLLOW CONSISTENT COLOR SCHEME. THE SHIP IS KNOWN TO HAVE CURRENT CARRYING CONDUCTORS COLORED GREEN, BLUE, BLACK, AND WHITE. ASSUME ALL ELECTRICAL CABLES ARE ENERGIZED UNTIL TESTED AND PROVEN OTHERWISE. TEST ALL ELECTRICAL CABLES TO ENSURE THEY ARE DE-ENERGIZED PRIOR TO WORKING ON THE ITEM.

WIPING OF INTERNAL SURFACES INTERNAL TO CASES AND SUMPS WILL ONLY BE CONDUCTED USING LINT-FREE RAGS APPROVED FOR USE BY THE OMT REP.

QUALITY ASSURANCE REQUIREMENTS: None additional

STATEMENT OF WORK REQUIRED

Provide the services of the Original Equipment Manufacturer OEM (RENK) to procure and replace the hydrostatic jacking hose in the Port Propulsion Motor Drive-End Bearing.

Coordinate with ship’s force to have associated equipment locked and/or tagged out per ship’s lock out/tag out policy. When the maintenance is complete, coordinate with ship’s force to have associated equipment unlocked and/or tagged in per ship’s lock out/tag out policy.

Drain and dispose of any liquid in accordance with all local, state, and federal laws.

Disassemble the bearing to replace the internal hydrostatic oil pressure hose.

Temporarily install hard blanks on all open piping and hoses to prevent foreign material contamination of the lube oil piping system.

Temporarily disconnect accelerometer wiring and remove accelerometers. Stow accelerometer in a protected location to prevent damage.

Temporarily remove RTD probes prior to rolling out the lower bearing halves. Stow RTD probes in a protected location to prevent damage.

Replace the internal hydrostatic jacking hose. Turnover old hose to ship’s force for inspection.

Reassemble the DE bearing using Reference 2.1, paragraph 6.5, Examination and Re-assembly, steps 1-21.

Re-install any hard blanks previously removed.

Re-connect accelerometer wiring and accelerometers previously removed.

Re-connect RTD probes prior to rolling out the lower bearing halves previously removed.

Inspections and Tests Conduct an operational test of the Port Propulsion Motor Drive-End Jacking Pump and internal hydrostatic jacking hose in the presence of the Chief Engineer and Port Engineer. Ensure no leakage or hose failure.

Record journal bearing clearances, preliminary and post bearing inspection thrust.

Conduct closeout inspection with the Chief Engineer prior to final re-assemble of the bearing.

Perform bearing insulation test using Reference 2.1, paragraph 3.10, Checking the Bearing on a Stationary Machine.

Reports Submit condition found report documenting the as found condition, all measurements recorded, adjustments performed, and as released condition of the DE and NDE bearings.

1.1.2 When inspection, service and testing reveal any deficiency a condition report is to be submitted to the OMT REP with recommended repairs and parts required. Submit one electronic copy in Portable Document Format (PDF).

Submit a report that includes “as released” condition of the propulsion motor pedestal bearing. Submit one electronic copy in Portable Document Format (PDF).

All reports and checklists are to be completed and signed by the person who carried out the inspection and maintenance work and countersigned by the Company’s representative.

Manufacturer’s Representative Provide the services of an OEM authorized field service representative to accomplish all work and testing on the propulsion motor pedestal bearing identified in section 3.0 ensuring compliance with the manufacturer’s standards and performance specifications.

This work item requires maintenance and repair actions to be performed on a MSC ship critical safety item. Only original equipment manufacturer (OEM) authorized technical field service providers or MSC qualified non-OEM technical field service providers and OEM authorized or MSC qualified non-OEM parts shall be used to accomplish the requirements of this work item for this ship critical safety item including oversight and guidance on all aspects of equipment as-found condition inspection, removal, disassembly, reassembly, repairs, modifications, reinstallation, and testing as applicable.

Possible Source:

bearings@renkusa.com RC.Sales@renk.com Clay.Chapman@renk.com GENERAL REQUIREMENTS: None additional 0202 - 8