ML20246D469

Special Rept 89-12:on 890330,Tech Specs Violated.Caused by Fire Penetrations 34-69AA & 36-64AA Not Restored to Operable Status within 7 Days.Fire Watch Posted & Penetrations Restored to Operable Status on 890405

ML20246D469
Person / Time
Site:	Rancho Seco
Issue date:	05/01/1989
From:	Keuter D SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
89-12, AGM-NPP-89-245, NUDOCS 8905100238
Download: ML20246D469 (2)

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$iBMUD SACRAMENTO MUNICIPAL UTluTY DISTRICT C 6201 S Street, P.o. Box 15830, Sacramento CA 95852-1830,(916) 452-3211 AN ELECTRIC SYSTEM SCRVING THE HEART OF CALIFORNIA l

AGM/NPP 89-245 May 1, 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 NUMBER 89-12: FIRE BARRIERS BREACHED MORE THAN 7 DAYS

Dear Mr. Martin:

Fire barrier penetrations 34-69AA and 36-64AA 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. 89-12 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, b6 4DanR.Keuter Assistant General Manager Nuclear Plant Manager Attachment cc w/atch: A. D'Angelo, NRC, Rancho Seco Document Control Desk,-Washington DC 7

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PDC RANCHO SECO NUCLEAR GENERATING STATION O 1444o Twin Cities Road, Herald. CA 95638-9799;(209) 333-2935

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.C # j SPECIAL REPORT NUMBER 89-12 Fire Barriers Breached More Than 7 Days

' ' 4 Dat'e of Occurrence- '

i March 30,1981 3 ,

i i Pla'nt Conditions at Time of Occurrence 1

The plant-was at hot shutdown following a trip on March 28, 1989.

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Identification of Occurrence 1 .e 3' ,

Fire barrier penetrations 34-69AA and 36-64AA 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 while pulling new cables in support of Design Change Package DCP 88-0108. On March 28, 1989, during preparation to reseal fire barrier penetration 34-69AA, the outer jacket of one of the cables was damaged. The delay in restoring the fire barrier penetrations to operable status was due.to the time required to replace the cable.

Corrective Action Taken An hourly firewatch was previously posted in the area and satisfied the Technical Specification 3.14.6 requirement for the deficiency The fire barrier penetrations were restored to operable status on April 5,1989.

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