ML20028C270

LER 82-098/03L-0:on 821127,fire Detection Sys Alarm for 4 Kv Switchgear Room Received Due to Pyralarm Detector Alarming. Caused by Low Alarm Setpoint.Pyralarm Replaced

ML20028C270
Person / Time
Site:	Cook
Issue date:	12/22/1982
From:	Palmer R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028C263	List: ML20028C262 ML20028C266 ML20028C270 ML20028C278 ML20028C282 ML20028C286
References
LER-82-098-03L, LER-82-98-3L, NUDOCS 8301070284
Download: ML20028C270 (1)

Text

LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l  ;* LEASE PR4NT OR TYPE ALL REQUIRED INFORMATIONI to I8 el 8

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! t o ,2 i EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h i DURING NORMAL OPERATION, A FIRE DETECTION SYSTEM ALARM FOR THF 4W WTTrH i o ia 11 RECEIVED DUE TO A PYRAI. ARM DETECTOR ALARMING FOR FIRE No APPARENT WATCHES l REAS Lo L.4J l WERE ESTABLISHED IN THE AFFECTED ZONE OF THE ALARMING DETECTOR s

LoIsI LCORRECTED. THIS CONDITION REMOVED ANY FURTHER CAPABILITY FOR THE FIRE DETECTIO g t o 1611 SYSTEM TO ALARM IN THE CONTROL ROOM IF ANY ADDITIONAL PYRALARMS WITHIN l THI 4

i o I il l ALARMED. THIS DESIGN FEATURE WAS EXPLAINED IN DETAIL IN R0-05

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, d L OPERATION DEPARTMENT PERSONNEL IMMEDIATELY REPLACED THE ALARMING DETECTOR. THIS WAS j i: Ii11 PERFORMED TO MINIMIZE DETECTOR IN0PERABILITY TIME AS EXPLAINED IN R0-050/315-096.

i u L_j 1 THE NEW DETECTOR WAS VERIFIED 70 BE OPERATING CORRECTLY AND THE SYSTEM WAS RETURNED g

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INVESTIGATION OF THE REPLACED DETECTOR FOUND THAT THE ALARMl SETP0 ii4 1 L WAS LOW. NO FURTHER ACTION IS PLANNED.

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