BSEP-90-0799, Special Rept 1-SR-90-003:on 901016,reactor Bldg Fire Detection Sys Zone 14 Instrumentation Declared Inoperable. Hourly Fire Watch Patrol in Effect

Special Rept 1-SR-90-003:on 901016,reactor Bldg Fire Detection Sys Zone 14 Instrumentation Declared Inoperable. Hourly Fire Watch Patrol in Effect

ML20065L525
Person / Time
Site:	Brunswick
Issue date:	11/29/1990
From:	Harness J CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
1-SR-90-003, 1-SR-90-3, BSEP-90-0799, BSEP-90-799, NUDOCS 9012070131
Download: ML20065L525 (2)

Text

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C9AL l Carolina Power & Light Company -  ;

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Brunswick Nuclear Project P. O. Box 10429 Southport, N.C. 28461 0429 November 29, 1990 ,

FILE: B09-135100 SERIAL: BSEP/90-0799

- U.S. Nuclear Regulatory Commission ,

ATTN:.-Document Control Desk Washington, D. C. 20555- ,

BRUNSWICK STEAM ELECTRIC PLANT UNIT 1 DOCKER No. 50-325  ;

LICENSE NO DPR 71  !

SPECIAL REPORT PER TECHNICAL SPECIFICATION 3.3.5.7 AND i PURSUANT TO TECHNICAL SPECIFICATION 6.9.2 (1-SR-90-003) i

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- Gentlemen: t

, - During the Unit 11990 Refuel 7 and Maintenance Outage, the unit Reactor Building fire detection-s stem Zone 14 instrumentation was declared inoperable ( control panel silenced 1on October 16,1990, due to spurious fire alarms. This zone monitors the 117-Foot elevation of the building, i

' On October 30, 1990,- the fourteen day time frame of this LCO was exceeded. A Work Request / Job Order; WR/JO] has been initiated- to investigate and resolve any ,

s problems to which t e' subject fire alarms could be attributed.

Until-return of the fire detection instrumentation to service and' cancellation 1

- of-the LCO, an hourly fire watch patrol, as required by Technical Specifications, 4

- will remain in effect.

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,,' 'Due.to the-susceptibility of these ionizati>n detectors to spurious alarms'and i

. the relative inaccessibility of the detectors (located on the ceiling above the

'117-foot elevation of . the Reactor Buildiag] and resulting personnel safety

' ',? - concern regarding troubleshooting and rept.ir, a project to. replace-the Refuel v - Floor Fire Detection System has been appros ed and currently expected to begin in 1 1 1992-.

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Vory equly yours,

.) .hA.MtMV J. L.' Harness , General Manager j Brunswick Nuclear Project j i

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Enclosure n . 9012070131 901129 [

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< -cc : Mr. S.'D. Ebneter Mr. N. B. Le BSEP NRC Resident Office

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