ML20041B117

LER 82-001/03L-0:on 820111,during Normal Operation,Two Fire Barrier Penetrations Found Nonfunctional.Shift Supervisor Immediately Notified;However,Fire Watch Not Posted.Insp & Supervisor Personnel Instructed on Proper Actions

ML20041B117
Person / Time
Site:	Fort Calhoun
Issue date:	01/19/1982
From:	Rollins D OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20041B108	List: ML20041B107 ML20041B117
References
LER-82-001-03L, LER-82-1-3L, NUDOCS 8202230287
Download: ML20041B117 (4)

Text

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- NRC FCRM 360 U. S. NUCLEAR REGULATORY COMMISSION (7 771- .

LICENSEE EVENT REPORT

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?i J GJ bl DGCK ET NUMBER C8 E9 EV ENT DATE EVENT DESCRIPTI.ON AND PROS ABLE CONSEOUENCES h l l o l 21 ] During normal operation, while performing ST-FP-9 (F.1), two fire barrier penetrations l

jo jal Juere found to be non-functional. The Shif t Supervisor was immediately notified. Con-l

' l o l .t l l trary to the requirements of Tech. Spec. 2.19 0), a fire watch was not-posted within j i

j o l a J lone hour, nor was an hourly fire watch patrol established. The fire detector vonee j 1019 I ladjac mt to the degraded fire barriers were operable. l 10171 1 I I

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- CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I c l o l [ Personnel performing the fire barrier inspection brought this matter to the attention; ,

jiI g j of the Shift Supervisor. Due to the press of other operational matters at the time,j 2

inspection personnel were' adi71 sed to contact another plant management representative.

l ,,,.,j j This contact was made; however, lack of proper communication on this occasion did g I not result in proper corrective action until the following day, when the. matter l i t a l l _was annin discussed with the manacement representative. Reinstruction was provided l to both supervisory and inspection personnel involved in this event.

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LER No.82-001 Omaha Public Power District Fort Calhoun Station Unit No. 1 Docket No. 05000285 ATTACHMENT NO. 1 Safety Analysis The two non-functional fire barrier penetrations are located in the walls dividing the lower electrical penetration room from the air com-pressor room and the air compressor room from the Turbine-Generator building. The penetrations consisted of a one-half inch annulus opening around a two inch pipe. This amounts to an opening of approximately four square inches per penetration.

The fire detector zones adjacent to the degraded fire barriers were operable. An hourly fire watch patrol required by the Technical Speci-fications is redundant to the fire detector system. The lack of a fire watch patrol for approximately 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> did not pose a significant fire hazard since the fire detection capability in the affected zones was still operable.

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LER No.82-001 Omaha Public Power District Fort Calhoun Station Unit No. 1 Docket No. 05000285 ATTACHMENT NO. 2 Corrective Action Upon discovery by plant management that a fire barrier was de-graded, immediate actions were taken to repair the barrier within the one hour time requirement of Technical Specification 2.19(7).

Discussions with management and inspection personnel involved in this event were held nad the impurtance of proper cen.municatica re-garding potential license violations was emphasized. Prompt follow-up by management to clarify potential problem areas in order to clearly assess caf sty ::1; nif L:,a : 2 11 a u a -:... * .nal.

LER No.82-001 Omaha Public Power District Fort Calhoun Station Unit No.1 Docket No. 05000285 .

ATTACIDfENT NO. 3 Failure Data This is the second failure involving a fire barrier penetration at the Fort Calhoun Station Unit No.1. The first failure corresponds

':o LER No.30-004.