ML19274E788

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GE Has Notified Util of Potential for Failure of Inside Recirculation Spray Pump Motors Model 15k6319XJ20A.Thrust Bearings May Seize or Bind After Several Hours of Running Time.Caused by Difference Between Expansion Rates
ML19274E788
Person / Time
Site: Beaver Valley
Issue date: 04/17/1979
From: Werling J
DUQUESNE LIGHT CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
BVPS:JAW:660, NUDOCS 7904240413
Download: ML19274E788 (2)


Text

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    • DUQUESNE LIGi!T COMPANY Beaver Valley Power Station Post Office Box 4 Shippingport, PA 15077 April 17, 1979 BVPS: JAW:660 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 LER 79-10/01P Mr. B.11. Grier, Director of Regulation United States Nuclear Regulatory Commission Ref; ion 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

In accordance with Technical Specification 6.9.1.8.1, the following occurrence is reported. The report was discussed with Mr. D. A. Beckman at 1645 hours0.019 days <br />0.457 hours <br />0.00272 weeks <br />6.259225e-4 months <br /> on April 16, 1979.

General Electric Corporation has notified Beaver Valley Power Station of a potential for failure of the Inside Recirculation Spray Pump motors.

As a result of pump testing at another facility, it has been determined that the pump motor thrust bearings may seize or bind after several hours of running time. Initial investigation by General Electric indicates the problem resulted because of the dif ference between the expansion rates of the inner and outer races of the thrust bearing.

The GE motors in question are 480 volt, 300 horsepower, 1800 RPM motors with Model Number SK6319XJ20A. General Electric is continuing their investigation to determine corrective action. Additional information and corrective action may be included in the followup report.

Very truly yours, J. A. Werling a Superintendent

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Mr. B. II. Grier April 17, 1979 BVPS: JAW:660 Page 2 cc: Director Of Management & Program Analysis *d United States Nuclear Regulatory Commission Wanliitigton, D. C. 20555 D. I.. Wigginton, BVPS Licensing Proj ect Manager United States Nuclear Regulatory Commission Washington, D. C. 20555 D. A. Beckman, Nuclear Regulatory Commission, King of Prussia, PA G. A. Olson, Secretary, Prime Movers Committee - EEI U

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