ML20054B092

RO 82-12:on 820329,investigation Revealed That Phase Differential Relay Cfd 12B Used in Diesel Generator Control Circuitry Not Seismically Qualified.Relays Will Be Replaced When Qualified Relay Identified & Procured

ML20054B092
Person / Time
Site:	Brunswick
Issue date:	04/01/1982
From:	Dietz C CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
BSEP-82-697, RO-82-12, NUDOCS 8204160319
Download: ML20054B092 (2)

Text

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Te'lecopied_ to Atlanta 4-2-82/jb Carolina Power & Light Company Brunswick Steam Electric Pla t .

2[ ,9 P. O. Box 10429 s-4 Southport, NC 28461-0429 f / ,,

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Mr. James P. O'Reilly, Director ' '

U. S. Nuclear Regulatory Commission Region II, Suite 3100 101 Marietta Street N.W.

Atlanta, GA 30303 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-224 LICENSE NO. DPR-62 CONFIRMATION FACSIMILE OF AN IMMEDIATELY REPORTABLE EVENT (2-82-12)

Dear Mr. O'Reilly:

This confirms the telephone conversation at 1545 on April 1, 1982, between Mr. R. M. Poulk, Jr., Regulatory Specialist, and Mr. C. A. Julian of your office concerning an immediately reportable event per Technical Specification 6.9.1.8i.

On Monday, March 29, 1982, Mr. R. M. Poulk, Jr., was contacted by Mr. Jim VanVliet expressing a concern about LER 2-79-16. The NRC had received several reports from other stations identifying a problem with the CFD 12B relay in a manner consistent with that expressed at the Brunswick site. An investigation by Plant Engineering, our architect-engineer, and General Electric has determined that the phase differential relay CFD 12B used in the diesel generator control circuitry is not seismically qualified in the deenergized state as required by the procurement specifications. These relays will be replaced when a qualified relay has been identified and procured. In the meantime, signs have been placed on each diesel generator panel containing these relays to caution personnel of the high vulnerability of vibrating this panel.

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As the Brunswick site is located in an area of low seismic activity, and as a diesel generator lockout will provide an instant alarm in the Control Room such that an operator can be dispatched to reset any diesel generator lockout in a short period of time, it is felt that the health and safety of the public is not affected by continued operation.

Very truly yours, O:

C. R. Dietz, General Manager Brunswick Steam Electric Plant RMP/gvc

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