ML19344A444

LER 80-028/03L-0:on 800718,during Setpoint Surveillance, Solenoid Valve for Torus to Reactor Bldg Vacuum Breaker 3-1601-20A Determined Inoperative,Preventing Valve from Opening.Caused by Mechanical Failure.Valve Replaced

ML19344A444
Person / Time
Site:	Dresden
Issue date:	08/14/1980
From:	COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17192A889	List: ML17192A888 ML19344A444
References
LER-80-028-03L-01, LER-80-28-3L-1, NUDOCS 8008200322
Download: ML19344A444 (1)

Text

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U. S. NUCL5AR REGULATCAY CCMMISSICN

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, LICENSEE EVENT REPORT CCNTRCL SLOCX: l l l l l l (PLEASE PRINT CR TYPE ALL REculRED INPCRMATICN) l l l .3 la 33 l lI uCessEE 7

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l0!ti [,"e[ l L @l O i 5l0l0l0l2l419 gl0[769l1 18 64 18 10 !@l 0 l 3 AEPORT EVENT DATE 74 is i l l a3 ATE 181040j@

7 4 60 61 OoCKET NLMSER EVENT CESCRIPTICN AND PRCBA8LE CCNSECUENCES h i

l o ! 21 lDuring normal operation while performing set point surveillance, solenoid valve for [

,,3j georus to Reactor Building vacuum breaker 3-1601-20A was determined to be inoperative, l

. , a ,, j ; preventing the valve from opening. This event is of mini =al safety significance l lia , g ; gsince redundant valve 3-1601-203 was immediately tested and proven operable (T.S. 3.7. A. l

!,a g i ;3.b). This is the first event of this nature.  ;

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i7 8 9 COMP.

SYSTEM CAUSE CALSE VALV E C ct CecE suscocE COMPCN ENT CODE SUICCCE SUSCOCE ll o-l 9 l' 7 3 lS lA lh l E lh l3 l@ lV lAlLlVl0l?l@ lEl@ lzl@

3 10 11 12 13 18 13 20 SECUENTIAL CCOUARENCE AEPCRT 8EVISION EVENT VEA A REPCRT No. COCE Tvpt N gaf ag

@ ;(Eg l_l l0 l2 l8 l jfl l0 l3 [ lLj l_l l .l l210 22l0 l 23 24 26 27 28 23 NPMCJ 30 741ME COMP.

31 32 COMPCNENT ACTtCN suTumE EpsEC* $MUTOCWN ATTACNMENT TAKEN ACTt CN CN PLANT METHCO MCURS SUSMmED PCMM WS. SU P*LI E9 iAANUFACTURER ..

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, CAUSE CESCRIPTICN AND CCARECTivE ACTCNC h llijallThe cause of this event is attributed to the mechanical failure of the solenoid valve. l r

li;t i (The entire solenoid valve was replaced and the vacuum breaker tested satisfactor11v. l

,, ,7, lNo further corrective action deemed necessary. l I'}3l l llitai3 l3 i7 30 I

47CWER QTHER$TATUS Cl RY OISCCVERY 0E3CRIP9CN l ST A Ii ! 5 l l E lg l 0 l 9 l 6 lgl N/A l [3(gl Surveillance DIS 1600-3 l 7 3 3 t 12 11 44 45 de 90

• Wt. EASED Op aELEA3E AMCUNT OF AC 1VITY LOCAT!CN Cp mELEASE N/A I I N/A I i2 ! s4 1%/l E f @ 10l z !@lf1 F 44 45 to

• tR$CNNET. EN9C$1JR E5 NUM8E4 OESCRI8SCN d 12 i l 101010 l@l*v*E  ! @l N/A I 30

• EuSCNNE N;LpiES I NUMSE4 OE3C3189CN 41 ll1 { ; } l 010 l0 [gl 'J/A

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! LOSS CP OR OAMACE TO 54CluTV -

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