ML20076E300

Special Rept 91-07:on 910709,nonfunctional Fire Barrier Doors Between Fire Zones OB-FA-6 & TZ-FZ-11B Not Restored to Operable Status within 7 Days.Caused by Ventilation Flow Preventing Door from Closing.Fire Patrol Established

ML20076E300
Person / Time
Site:	Oyster Creek
Issue date:	08/12/1991
From:	J. J. Barton GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-07, 91-7, C321-91-2215, NUDOCS 9108190222
Download: ML20076E300 (2)

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Forked Rwer, New Jersey 08731-0388 609 971-4000 Writer's Direct Dial Number:

August 12, 1991 C321-91-2215 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC P0555

Subject:

Oyster Creek Nuclear Generating Station Docket No. 50-219 Special Report No. 91-07 Enclosed is Special Report No. 91-07 which is submitted in accordance with technical specification 3.12.E.

If there are any questions, please contact Mr. Michael Heller, OC Licensing Engineer at (609)971-4680.

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7L g Join J. B r an V e Pres d nt and Director ster Cre.k JJB\MH:jc Enclosure cc: Administrator, Region 1 (All w/ enclosure)

Senior NRC Resident Inspector Oyster Creek NRC Project Manager

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S PDR 7 (J GPU Nuclear Corporahon is a subsidary of Generar Pubhc Utt t.es Corporation l ,

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Soecial Report 91-07 Report Date: August 12, 1991 Occurrence Date: . July 9,1991 Identification of Occurrence:

A non-functional fire barrier door has not been restored to functional status within (7). days as required by technical specification 3.12.E.

Descriotion of Occurrence:

During a routine weekly surveillance of fire barrier doors, the door between fire zones 08-FA-6 and TB-FZ-llB was identified as not meeting the acceptance criteria. The door was declared non-functional due to not being able to latch under its own power.

A_D31vsis of Occurrence:

This door-is normally held open by an electromagnet device. Due to ventilation flow in this area, the door will not close and latch when the magnet is released under certain HVAC operating modes. Upon discovery of the non-functional fire barrier doer, th- required fire watch tours were established. The safety significance of this event is minimal.

Corrective Action:

l Upon discovering the non-functional barrier door, a fire watch patrol was l established in accordance with the technical specification. An action item has been assigned with a due date of March 30, 1992 to identify the modification necessary to ensure the door will remain functional during all modes of HVAC operation.

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(Heller \C321-91-2215)