ML20247B426

Special Rept 89-04:on 890216,fire Barriers Breached More than 7 Days,Per Tech Spec 3.14.6.2.Hourly Firewatch Previously Posted & Fire Barrier Penetrations Restored to Operable Status on 890218

ML20247B426
Person / Time
Site:	Rancho Seco
Issue date:	03/20/1989
From:	Keuter D SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
89-04, 89-4, AGM-NPP-89-137, NUDOCS 8903290391
Download: ML20247B426 (2)

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SACRAMENTO MUNICIPAL UTILITY DtSTRICT O 6201 S Street, P.o. Box 15830, Sacrariiebt$ b 95852-1830,(916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA

,!.m 2 21 a g . 4g AGM/NPP 89-137 March 20, 1989 U. S. Nuclear Regulatory Commission Attn: J. B. Martin, Regional Administrator Region V 1450 Maria Lane, Suite 210 Walnut Creek, CA 94596 Docket No. 50-312 Rancho Seco Nuclear Generating Station License No. DPR-54 SPECIAL REPORT K*lMBER 89-04: FIRE BARRIERS BREACHED MORE THAN 7 DAYS

Dear Mr. Martin:

Fire barrier penetrations X41105, X41105LB, and X44296, were not restored to operable status within the 7 days required by the Rancho Seco Technical Specifications. The Sacramento Municipal Utility District hereby submits Special Report No. 89-04 in accordance with Technical Specification 3.14.6.2.

Members of your staff with questions requiring additional information or clarification may contact Mr. Kurt Zimmermann at (209) 333-2935, extension 4627.

Sincerely, b$hh Dan R. Keuter gAssistantGeneralManager Nuclear Plant Manager Attachment cc w/atch: A. D'Angelo, NRC, Rancho Seco Document Control Desk, Washington DC f),t 8903290391 890320 ~~

{DR ADOCK 05000312 PDC RANCHO SECO NUCLEAR GENERATING STATION O 1444o Twin Cities Road, Herald, CA 95638-9799;(2o9) 333-2935

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1SPECIAL REPORT NUMBER 89-04, Fire' Barriers' Breached More Than~ 7 Days 5

Date-of Occurrence February 16,'1989 Plant Conditions at Time of Occurrence The plant was at c'ld o shutdown.

Identification'of OccurIRace Fire barrier penetrations X41105, X41105LB, and X44296 were not restored to operable status within.the 7 days required by the Rancho Seco Technical Specifications.

Description of Occurrence The fire barrier penetrations ~were breached'during new construction on the Non-Nucinar Instrumentation (NNI) under Work Request 149681. At the same time, extensive work was being performed associated with the evaluation and repair of the Auxiliary Feedwater (AFH) System following the' January 31 AFH System overpressurization. .The decision was made to continue the assignment of resources resolving the overpressurization issue since compensatory action had been taken by posting an hourly firewatch. As soon as the AFH evaluation tasks were completed, the fire barrier penetrations were restored to operable

-status.

_orrective C Action Taken An hourly.firewatch was previously posted in the area and satisfied the Technical Specification 3.14.6 requirement for the deficiency. All-of the fire barrier penetrations were restored to operable status on February 18, 1989.

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