ML20057E902

Special Rept 93-17:on 930903,LCO 3.7.12 Entered for Fire Barrier Being Nonfunctional for Period Greater than Allowed by Ts.Fire Detectors on One Side of Nonfunctional Fire Barrier Verified Operable

ML20057E902
Person / Time
Site:	Sequoyah
Issue date:	10/08/1993
From:	Fenech R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
93-17, NUDOCS 9310130352
Download: ML20057E902 (3)

Text

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t Tennessee vanev wony Posi once con 2rm UEdy Dasy, Tenr+sd+ 37379-2000  !

Robert A. Fenech f vee Pres.neo*. seouoyah ravciear Piant j

October 8, 1993  ;

I U.S. Nuclear Regulatory Commission ,

ATTN: Document Control Desk Washington, D.C. 20555 l Gentlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 {

SEQUOYAll NUCLEAR PIANT (SQN) - UNITS 1 AND 2 - FACILITY OPERATING l LICENSES DPR-77 AND DPR TECHNICAL SPECIFICATION (TS) 3.7.12 SPECIAL  !

REPORT 93-17  !

The enclosed special report provides details concerning a fire barrier that >

was nonfunctional for a period of time greater than the TS allowable j timeframe. This report is being submitted in accordance with TS 3.7.12 j Action Statement (a). l If you have any questions concerning this submittal, please telephone -f C.11. Whittemore at (615) 843-7210. l l

Sincerely, h&f $- - . i Robert A. Fenech l

.i Enclosure {

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Mr. D. E. LaBarge, Project Manager U.S. Nuclear Regulatory Commission t One White Flint, North 11555 Rockville Pike  ;

Rockville, Maryland 20852-2739 [

NRC Resident Inspector Sequoyah Nuclear Plant ,

2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624  ;

Regional Administrator U.S. Nuclear Regulatory Commission Region Il 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 P

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.c ENCLOSURE SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 ,

SPECIAL REPORT 93-17

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Res.cription_of_ Condition

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On September 3, 1993, with Unit 1 in Mode 5 coming out of the Cycle 6 refueling outage, and Unit 2 in Mode 5 for a maintenance outage, Limiting Condition for Operation (LCO) 3.7.12 was entered. i During fire barrier and barrier penetration inspections and evaluations being performed in conjunction with the fire protection improvement plan, several deficient conditions were identified with the drop ceiling over the unit operator working and living area on Elevation 732.0 of the control building. This area is considered part of the operator habitability zone. However, the design drawings denote the drop ceiling as being a 1 1/2-hour rated. fire barrier; therefore, the penetrations  ;

through the fire barrier have to be adequately sealed with a '

fire-resistant substance equivalent to or greater than that of the ceiling. Several penetrations were identified that were not adequately sealed to this requirement.

The fire barrier was not reestablished, i.e., penetrations were not returned to the designed configuration, within the allowable technical specification (TS) timeframe. This condition is being reported in accordance with TS Action Statement 3.7.12.a.

Carrective Action In accordance with LCO 3.7.12 Action Statement (a), the fire detectors on i one side of the nonfunctional fire barrier we:e verified operable; roving '

fire watches were established. The fire watches will be maintained until -

the fire barrier is returned to the design configuration. The ceiling is  !

expected to be returned to the design configuration by November 1,1993.

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