ML20247G115

Special Rept 89-06:on 890226,fire Barriers Not Restored to Operable Status within 7 Days.Caused by Pulling Temporary Cables in Support of Special Test Procedure 1218.Hourly Firewatch Posted in Area

ML20247G115
Person / Time
Site:	Rancho Seco
Issue date:	03/28/1989
From:	Keuter D SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
89-06, 89-6, AGM-NPP-89-163, NUDOCS 8904040129
Download: ML20247G115 (2)

Text

.-__

1 ..

e'suun '~

SACRAMENTO MUNICIPAL UTILITY ol3TRICT C 6201 S Street, P.o. Box 15830, Sacramento CA 95852-1830,(916) 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA AGM/NPP 89-163 MAR 2 e ;999 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 89-05: FIRE BARRIERS BREACHED HORE THAN 7 DAYS

Dear Mr. Martin:

Fire barrier penetrations 31-36AE, 36(71/1)AA, and 3086 were not restored to operable stuus within the 7 days required by the Rancho Seco Technical Specifications. The Sacramento Municipal Utility District hereby submits Special Report No. 89-06 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, N ) &

Dan R. Keuter Assistant General Manager Nuclear Plant Manager Attachment cc w/atch: A. D'Angelo, NRC, Rancho Seco v60cument Control Desk, Washington DC 8904040129 890328 PDR ADOCK 05000312 $1 --7 g PDC f

I RANCHO SECO NUCLEAR GENERATING STATION C 1444o Twin Cities Road, Herald, CA 95638 9799;(209) 333 2935

e SPECIAL REPORT NUMBER 89-06 Fire Barriers Breached More Than 7 Days Date of Occurrence February 26, 1989 Plant Conditions at Time of Occurrence The plant was at cold shutdown.

Identification of Occurrence Fire barrier penetrations 31-36AE, 36(71/1)AA, and 3086 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 temporary cables in support of Special Test Procedure (STP) 1218, " Diesel Generator G-886A 24 Hour and Load Rejection Test." The delay in restoring the fire barrier penetrations to operable status was due to the length of time required to perform the STP.

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 March 2, 1989.

l l

m _ - - _ - - - - ----- - - - - -- - - - - - - - - - - - - - - - - - - - - -