ML18347A863

Letter Informing the NRC That Palisades Plant Would Remain Shutdown Until Modifications to the Piping Support Systems Could Be Completed

ML18347A863
Person / Time
Site:	Palisades
Issue date:	05/04/1979
From:	Gibbs M Consumers Power Co, Isham, Lincoln & Beale
To:	Anderson G, Bechhoefer C, Livingston M Atomic Safety and Licensing Board Panel, Univ of Washington
References
Download: ML18347A863 (1)

Text

• ISHAM, LINCOLN & BEALE COUNSELORS AT LAW ONE FIRST NATIONAL PLAZA FORTY-SECOND FLOOR CHICAGO, ILLINOIS 60603 TELEPHONE 312-786-7SOO TELEX: 2-5288 WASHINGTON OFFICE 1050 17'!t'- STREET, N. W.

SEVENTH FLOOR WASHINGTON, D. C.20036 May 4, 1979 202-833-9730 Charles Bechhoefer, Esq. Dr& George c. Anderson Atomic Safety:and Licensing Board Department of Oceanography U.S. Nuclear Regulatory Commission University of Washington Washington, D.C. 20555 Seattle, Washington 98195 Dr. M. Stanley Livingston 1005 Calle Largo Sante Fe, New Mexico 87501 Re: Consumers Power Company (Palisades Plant)

Docket No. 50~255-SP Gentlemen:

As counsel for Consumers Power Company in the above-cap-tioned proceeding, I am writing to inform the Atomic Safety and Licensing Board of recent events which concern the Palisades Plant.

This matter does not relate to the instant proceeding, which involves Consumers Power's application for an operating license amendment authorizing the replacement of the steam generators. However, as a matter of* courtesy, the Licensing Board and the parties are being provided with the following information.

In the course of recalculating the stresses which would be put on the nuclear plant's piping systems in the event of an earthquake, Consumers Power discovered that supports for two of the piping systems may not have an adequate margin of safety in terms of the amount of earthquakerelated stress which the pipes could withstand. Therefore, Consumers Power decided on May 1, 1979, that the Palisades Plant, which was already shut down for another reason, would remain shut down until modifications to the piping support systems involved could be completed. It is estimated that those modifications will require two weeks.

Should there be further developments regarding this matter, the Licensing Board will be notified.

Very truly yours, IY\(M~U\ £:G,-L.k Martha E. Gibbs MEG be cc: Service List