ML20094N918

Special Rept 84-03:fire Detector Rendered Inoperable When Water for Drill Cooling Dripped Onto Detector.Hourly Roving Fire Watch Established

ML20094N918
Person / Time
Site:	Sequoyah
Issue date:	08/02/1984
From:	Wallace P TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF ADMINISTRATION (ADM)
References
84-03, 84-3, NUDOCS 8408160453
Download: ML20094N918 (2)

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TENNESSEE VALLEY AUTHORITY l

' Sequoyah Nuclear Plant

. . Post Office Box 2000 Soddy Daisy, Tennessee 37379 August 7,i1984 U.S.. Nuclear Regulatory Commission Document Control Desk Washington,.DC 20555 Gentlemen:

TENNESSEE VALLEY AUTHORITY - SEQUOYAH NUCLEAR PLANT UNIT 1 - DOCKET NO.

50-327 -' FACILITY OPERATING LICENSE DPR SPECIAL REPORT 84-03 The enclosed special report provides ' details concerning the inoperability of the fire detector in the mechanical equipment room of the auxiliary building in excess of fourteen days'. This report is submitted in accordance with Sequoyah Unit 1 Technical Specifications 3.3.3.8 and 6.9.2.

Very truly yours, TENNESSEE VALLEY AUTHORITY OR. ten -

P. R..Wallace.

Plant Manager Enclosure cc (Enclosure):

James P. O'Reilly, Director U.S. Nuclear Regulatory Commission Suite 2900 101 Marietta Street, NW Atlanta, Georgia -30323 Records Center Institute of Nuclear Power Operations Suite 1500 1100 circle 75 Parkway Atlanta, Georgia 30339 i

NRC Inspector, NUC PR, Sequoyah i

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8408160453 840802 An Equal Opportunity Employer lll y

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_ i SEQUOYAH' NUCLEAR PLANT. ,

UNIT.1 - -

SPECIAL REPORT . ,

84-03 -

s Event Description and Cause- ,

A fire detector was made inoperable >when water;for drill ' cooling < dripped onto the detector making it inoperable. Dus drilling is being done to modify the mechanical equipment room,in the auxiliary building to become the new fif th vital battery (125V) room. < The fire detectors in this room are not necessary to be in service at this time due to the occupancy of the room. The detectors are required due to the minimum number of detectors required to be operable as specified in technical'apecifications.

Corrective Action The requirement for an hourly roving fire watch as specified in~ technical specifications is being met. The involved fire detector will be restored to functional status and verified operable after completion of the modifica-tion to install the new 125V vital battery. The roving fire watch will' be maintained until the fire detector is declared operable.

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