ML20199D131

Informs That Proposed Recirculation Pump Vibration Testing Plan Acceptable,Based on Licensee Testing Procedure & Supporting Stress Analysis

ML20199D131
Person / Time
Site:	Columbia
Issue date:	02/19/1986
From:	Lainas G Office of Nuclear Reactor Regulation
To:	Adensam E Office of Nuclear Reactor Regulation
References
CON-WNP-0851, CON-WNP-851 TAC-60344, NUDOCS 8602280469
Download: ML20199D131 (2)

Text

FEB 19 I

• MEMORANCUM FOR: Elinor G. Adensam, Director BWR Project Directorate #3 Division of BWR Licensing FROM: Gus C. Lainas, Assistant Director for BWR Division of BWR Licensing

SUBJECT:

WNP-2 RECIRCULATION PUMP VIBRATION TESTING (TAC #60344)

References:

1. Memorandum from D.F. Kirsch to H.L. Thompson dated November 20, 1985.

2. Memorandum from L.S. Rubenstein to T.M. Novak dated July 18, 1985.

At the request of the WNP-2 Project Manager, members of the former Mechanical Engineering Branch participated in a telephone conversation with the Project Manager and the licensee on November 21, 1985. The purpose of that telephone conversation was to assist Region V in determining the acceptability of the licensee's proposed recirculation pump vibration testing plan for WNP-2 (Reference 1).

The licensee has been operating WNP-2 at approximately 72% power for an extended period of time with only one reactor recirculation pump in service.

The other reactor recirculation pump was taken out of service due to vibration.

A technical specification change was granted to allow operation at 72% power with only one recirculation pump (Reference 2).

On November 19, 1985, the licensee submitted a proposed vibration testing plan for the recirculation pump. The test will reactivate the pump that has been idle and will attempt to determine the cause of the pump vibration problem and what corrective action might be required. The licensee's proposed test procedure has defined pump vibration limits which were approved by the pump vendor and General Electric. The licensee has also provided a supporting stress analysis to demonstrate the structural integrity of the recirculation piping system for those pump vibration levels.

On the basis of its review of the licensee's testing procedure and supporting stress analysis, the staff determined that the licensee has provided reasonable l assurance that the proposed recirculation pump vibration testing would not

Contact:

Y. Li l X-27839 96022 { ho 97 m 5- >

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FEB 19 E John Bradfute cause unanticipated adverse effects on recirculation system integrity and the proposed testing plan was acceptable. -

Original signed by B. D. Liaw B. D. Liaw, Chief Engineering Branch Division of BWR Licensing cc: R. Bernero B. D. Liaw E. Adensam R. LaGrange F. Cherny H. Brammer Y. Li DISTRIBUTION:

BWR - Reading Files BWR - WNP-2 Branch Files

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