ML19241A931

LER 79-021/03L-0 on 790601:drywell-to-suppression Chamber Vacuum Breaker Div 11 Alarm Sys Breaker Found Tripped on 790410 & Reported as non-reportable.Should Be Reclassified. Cause of Breaker Trip Unknown

ML19241A931
Person / Time
Site:	Quad Cities
Issue date:	06/27/1979
From:	Vahrenwald J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19241A930	List: ML19241A929 ML19241A931
References
LER-79-021-03L-02, LER-79-21-3L-2, NUDOCS 7907110445
Download: ML19241A931 (1)

Text

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$ til 6 63 EVEN T DATE 74 15 REPOR T D A"E dJ EVENT DESCRIPTION AND PRO - + .ONSELUENCESh a  : [ The drvwell t3 suporession chamber vacaum brnaker Div:s ion if ,1,c e vs mm bra & r l n 2 l was f r und tripped and reported as a Non-Recortable Occurrence nn April 10. 1979. and I jo .;  ! should be reclassified. At the t ime the breaker was found t rinced, Division i alarm I ois l system was operable and the drywell ;o suporession chamber d/o was constant, The I a je l alar systen Joes rot a f fect the operability of the vacuum breakers, thus the vacuum j gl q jbreaker system was at al1 tines operable. [

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CYSTEM CAsSE CALSE CCYP valve CODE COCE SL'B C O D E COVPCNENT CCDE SLBCCCE SU8CCCE 7

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CAUSE oESCRIPTICN AND CCRRECTIVE ACTIONS

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