ML20235J212

Special Rept 87-11:on 870518,during Cold Shutdown,Fire Zone 32 Detection & Water Spray Subsystems Placed Under Clearance Due to Recurring Audible Alarms & Trouble Signals on Panel H3FPA.Work Request Issued for Repair of Subsystems

ML20235J212
Person / Time
Site:	Rancho Seco
Issue date:	06/30/1987
From:	Andognini G SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
87-11, GCA-87-254, NUDOCS 8707150446
Download: ML20235J212 (2)

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Dsuun SACRAMENTO MUNICIPAL UTILITY DISTRICT I : 6201 S Street. P.O. Box 15830 Sacramento CA 958521830.(916) 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA

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GCA 87-254 JUN 3 01537 i

J. B. Martin, Regional Administrator ~

~U.S. Nuclear Regulatory Commission Region V, Office of Inspection & Enforcement 1450 Maria Lane, Suite 210 .

Walnut Creek, CA 94596 l Docket No. 50-312 Rancho Seco Nuclear Generating Station License No. DPR-54 1 SPECIAL REPORT NO. 87-11: FIRE SUPPRESSION AND DETECTION SYSTEMS '

INOPERABLE IN ZONE 32

Dear Mr. Martin:

, The Sacramento Municipal Utility District hereby submits Special Report No. 87-11 in accordance with Technical Specifications, Section 3.14 and 6.9.5.E.

During Cold Shutdown conditions on May 18, 1987, at 10:05 P.M.,

Fire Zone 32 Detection and Water Spray Subsystems were placed under clearance (i.e., tagged out) due to reoccurring audible alarms and trouble signals on panel H3FPA. Fire Zone 32 covers the Turbine Building Main Lubricating oil Area on the grade level.

Work Request No. 130420 was issued to troubleshoot and repair the subsystems. The subsystems listed above are scheduled to be returned to service before September 1, 1987. In the meantime, the compensatory measure, to establish fire watches, is beir g performed per Section 3.14.3.2 of the Technical Specifications for the above-listed fire zone.

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' RANCHO SECO NUCLEAR GENERATING STATION :. 14440 Twin Cities Road, Herald, CA 95638 9799; C09) 333 2935

J. B. Martin GCA 87-254 Page 2 If there are any questions concerning this report, please contact Mr. Ron W. Colombo at (916) 452-3211, extension 4236.

Sincerely,

} x4 G Ca An nini Chief Executive Officer, Nuclear Attachment cc: A. D'Angelo G. Kalman INPO l

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