ML20235Z363

Forwards LER-015-01,changing Commitments Re Fire Protection Sys.Sys Will Remain on When Individuals in Area & Deactivated If Work Could Cause Spurious Actuation.New Methodology Will Be Adopted After Abort Switches in Place

ML20235Z363
Person / Time
Site:	Rancho Seco
Issue date:	10/15/1987
From:	Andognini G SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20235Y802	List: 05000312/LER-1987-015, :on 870207,numerous Cardox Zones Observed Deactivated When No Safety Concern for Personnel Noted. Caused by Personnel Not Reactivating Zone After Concern Resolved.Hourly Verification Initiated & Procedure Revised ML20235Z363
References
GCA-87-501, NUDOCS 8710210113
Download: ML20235Z363 (2)

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SACRAMENTO MUNICIPAL UTILITY DISTRICT O P. O. Box 15830, Socramento CA 95852 1830,(916) 462-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA 00T 151987 i

GCA 87-501 E

a 8C U.

S. Nuclear Regulatory Commission

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Attn:

Document Control Desk o

g Washington, D. C.

20555 7

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>.o Docket No. 50-312

.,p Rancho Seco Nuclear Generating Station

.c-License No.-DPR-54

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LICENSEE EVENT REPORT 87-015, Revision 1:

CARBON DIOXIDE PROTECTED FIRE ZONES CO2 DELUGE SYSTEMS LEFT DEACTIVATED AND THE ZONES UNATTENDED

Dear Sirs:

In light of-pending changes in the use of the Fire Protection System the Sacramento Utility District hereby submits Revision 1 of the subject report.

This revision of the report changes our commitments.

The District has evaluated the past use of the Fire Protection System and how it has been deactivated for personnel safety reasons.

As a result of this review the District is adopting a'new approach to the use of the Fire Protection System.

In the new approach the system will remain on when individuals ars in the area and will be deactivated if work could cause spurious actuation.

This new methodology will be adopted after system i

abort switches are in place, procedure revisions have been made, and training has been performed.

The District expects completion of these items in early 1988.

Please contact me if you have any questions.

Members of your staff with questions requiring additional information or

' clarification may contact Paul Lavely at (916) 452-3211, extension 4674.

Sincerely, i

i

. Chief Executive Officer, Nuclear 8710210113 871015

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PDR ADOCK 05000312

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B PDR v

i RANCHO SECO NUCLEAR GENERATING STATION O 14440 Twin Cities Road, Herald, CA 95638-9799;(209) 333 2935

9 NRC DC DESK GCA 87-501 Attachment cc w/atch:

j G.

Kalman, NRC, Bethesda (2)

A.

D'Angelo, NRC, Rancho Seco J. B. Martin (2)

INPO

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