ML20079L629

Special Rept:On 910916 & 23,cable Spreading & Computer Room CO2 Fire Protection Sys Out for Svc for More than 14 Days. Caused by Need to Provide for Worker Safety During Mod Work. Fire Detectors Verified Operable & Firewatch Stationed

ML20079L629
Person / Time
Site:	Peach Bottom
Issue date:	10/30/1991
From:	Power K PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CCN-91-14183, NUDOCS 9111070018
Download: ML20079L629 (3)

Text

a e CCN 91-14183

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PI Atil lullloM Alo\th h m i k sial'1ON R D 1,um 2iu bMe. ;%tW, i kle.i. Penog lutna l';li reu n surron.-tutro v a o#19 saisv e t'l?) 4 % "'014 Oct oteor 30, 1991 Docket Nos. 50-277 50-278 U. S. Nuclear Regulatory Commission ATTH: Document Contici Dup Washington, DC 20$55 Sl'BJECl: Pcr.ch Bottom Atomic Power Station - Units 2 & 3 Special Report - Cable Spreading Room CO2 fire Protection System Out Of Service Greater Than Fourtcen Days REFERENilS: 1. Peach Bottom Atomic Power Station iechnical Specification 3.14.B.2 and 3.14.0.4

Dear Sir:

Description of Occurrencc On September 16, 1991, the Cable Sprecding Rocm (CSR) and Computer Rom (CR) CO2 Systems were removed from service for six days. The syrtem outage was required to allow modification work to take place for 26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br /> a day, six days a week. Removal of the CO2 system was to provide safety 'or the indivituo h wcrk!ng in are.cs which could not be exited in a timely manner if the sye"em actuated. Le system was then removed f rom service a sin on Septemoer 23, 1991, and remained ruJt cf service for another six T. The station expects tr. continue this practice of blocking the CO2 System for wort in the CSR or CR ; hat could impede the occupant egress from the area.

Technical Specifications requires a specia~l report submission when the CO2

'

• stem is inoperable.

_Cy rective Actions faLen The CSR and CR, CO2 Systems are administratively removed from service to provide for worker se'aty. F ire detector were verifled to be operable to proiide for early detection of fire. During periods of time while the system is mechanically blocked, c firewatch with alternate suppression capability is stationed in the area in accordance with iechnical Specification 5.14.B.4.

Also, in the case of a fire condition, the system could be manually operated by the Fire Origade after the evacuat4n of workers.

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y 91110'0018 911030 \ t i

PDR 3

ADOCK 05000277 POR \\

U.'S. Nuclear Regule. tory Commission Page 2 Plans for Restoring Equipment to an Operable Status The system wil, be returned to service during any lapse in continuous work in the room and permanently after all modification work is complete. The Unit 3 work is expected to be complete by 11/01/91.

If you have any questions, please do not hesitate to contact us.

Sincerely i

,[j g

'1 l/. *tV cc: R. A. Burricelli, Public Service Electric & Gas T. M. Gerusky, Commonwealth of Pennsylvanto J. J. Lyash, USNRC Senior Resideat inspector

1. T. Martin, Administrator, Region 1. USNRC H. C. Schwemm Atlantic Electric R. 1. McLean, State of Maryland J. Urban, Delmarva Power

U. S. Nuclear Regulatory Commission Page-3 e

bcc: J. W. Austin A4-4N, Peach Bottom J. A. Bostlio 5?A-5, Chesterbrook G. J. Beck d?A-5, Chesterbrook J. A. Bernstein SIA-13, Chesterbrook R. N. Charles SIA-1, Chesterbrook Commitment Coordinator 52A-5, Chesterbrook Correspondence Control Program 618-3, Chesterbrook J. B. Cotton 53A-1, Chesterbrook G. V. Cranston 638-5, Chesterbrook E. J. Cullen S23-1, Main Offn e A. D. Oycus A3-lS, Peach Bottom A. A. Fulvio A4-IS, Peach Bottom D. R. Helwig SIA-ll, Chesterbrook R. J. Lees. NRB 53A-1 Chesterbrook C. J. McDermott 513-1, Main Office D. B. Miller, Jr. SMO-1, Peach Bottom PB Nuclear Records A4-25, Peach Bottom K. P. Powers A4-IS, Peach Bottom J. M. Pratt B-2-S, Peach Bottom J. T. Robb SIA-13, Chesterbrook

0. M. Smith 52C-7, Chesterbrook

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