ML20005D954

Special Rept 2-SR-89-006:on 891114,reactor Bldg Fire Detection Sys Zone 14 Instrumentation Declared Inoperable Due to Erroneous Fire Alarms.Tech Spec 6.9.2 14-day Time Frame Exceeded.Repairs Expected to Be Completed by 900330

ML20005D954
Person / Time
Site:	Brunswick
Issue date:	12/14/1989
From:	Harness J CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
2-SR-89-006, 2-SR-89-6, BSEP-89-1096, NUDOCS 9001030009
Download: ML20005D954 (1)

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Carolins Power & Light Company i

Brunswick Nuclear Project

, P. O. Box 10429

Southport, NC 28461-0429 December 14, 1989

l. FILE: B09-135100 SERIAL: BSEP/89-1096 U.S. Nuclear Regulatory Commission ATrN: Document Control Desk j Washington, DC 20555 l BRUNSWICK STEAM ELECTRIC PLANT UNIT 2

. DOCKET NO. 50-324 f- LICENSE NO. DPR-62 SPECIAL REPORT PER TECl!NICAL SPECIFICATION 3.3.5.7 AND PURSUANT TO TECllNICAL SPECIFICATION 6.9.2 (2-SR-89-006)

Gentlemen:

During the Unit 2 1988 refueling / maintenance outage, the unit Reactor Building fire detection system zone 14 instrumentation was declared inoperable at 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> on November 14, 1989, due to erroneous fire alarms. This zone monitors the 117-foot elevation of the building. A limiting condition for operation (LCO) and appropriate Work Request / Job Orders (WR/J0s) were initiated to investigate and resolve any problem (s) to which the subject fire alarms could -

be attributed.

Due to relative _ inaccessibility of the involved fire detectors (located on the ceiling above the 117-foot elevation of the Reactor Building) and resulting personnel safety concern regarding troubleshooting of the problem (s), the cause of the subject fire alarms has not yet been determined. As such, the 14-day time frame of the involved LCO was exceeded on November 28, 1989.

The expected date for completion of the involved repair activities and return of the involved instrumentation to service is March 30, 1990. Pending completion of the repair activities, an hourly fire watch patrol, as required by technical specifications, will remain in effect.

Very truly yours, N

. L. Ilarness, General Manager Brunswick Nuclear Project MJP/ meg Enclosure cc: Mr. S. D. Ebneter Mr. E. G. Tourigny BSEP NRC Resident Office My i

9001030009 891214 e

PDR ADOCK 05000324 S PNV