ML20084R404

Telecopy Ro:On 750429,HPCI High Temp Isolation Switches Drifted During Operations Exceeding Tech Spec Limit.Caused by Drift of 12 Sensors Found During Refueling Outage.Sensors Will Be Replaced W/Capillary Type Switches

ML20084R404
Person / Time
Site:	Dresden
Issue date:	04/29/1975
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	Oleary J Office of Nuclear Reactor Regulation
Shared Package
ML20084Q736	List: 05000249/LER-1975-024, AO 50-249/75-24:on 750426,during Routine Calibr of HPCI Area Temp Sensors,Setpoints on 12 of 16 Temp Sensors Found Above Tech Spec Limit.Caused by Unsuitable Existing Temp Sensors for First Operation Surveillance Type Operation ML20084R404 ML20084R406
References
NUDOCS 8306150096
Download: ML20084R404 (1)

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• 2 00 DECREES F THE DRIFT OF TJELVE OF THE 6IXTEEN SEUSORS WAS FOUdD D URIHG HEFUELIdd OUTAGE FJ..CII0dAL SERVAILLauCE. THESE 6 WITCHES HAVE DEEN A CG.iTI JUI dd PdO?Lici a ud THE STATIOC EXPECTS T0 hEPLACE THESE WITH A CAPILLARY TYPE SJIiCH IG THE JEAR FUTURE.

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