ML19225A012

LER 79-017/03L-0 on 790609:during insp,1B Lhsi Pump Suction Valve from Refueling Water Storage Tank Found Inoperable. Caused by Failure of Motor Operator Torque Switch.Switch Assembly Replaced,Tested & Returned to Svc

ML19225A012
Person / Time
Site:	Beaver Valley
Issue date:	07/08/1979
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19225A006	List: ML19225A005 ML19225A009 ML19225A012
References
LER-79-017-03L, LER-79-17-3L, NUDOCS 7907170114
Download: ML19225A012 (1)

Text

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NRG FORM 366 U.S.'NUCLEA R REGULATORY CCMMISSION 0 778 LICENSEE EVENT REPORT CONTROL BLOCK: l I

l l l l l 6

lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI 7

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6 l1 ll 11 uCENSE TYPE l1JGl@lSi CAl I $8l@

CON'T 0 1 8

OURCE l60L @l 0 l 5 l OOCKET el 0 l 0 NUM8ERl 013 l 3 i o84 @l0 63 l6EVENT lo C19 arg l7 lo '@l0 l 7 REPORT 14 75 l0l8 l 7 l 980l@

DATE EVENT CESCRIPTION AND PROB ABLE CONSECUENCES h o 2 (Durine an insOection of valve stem lockinc aurs on otor-nnne,*ed r ,1 < < o onor,rn-q. I o 3 the 1B LHSI Pump Suction Valve from the Refueling Water Storace Tank was found to be!

Lo 4 inoperable.

o s ! I o ic I I o 7 I I Qia I I 7 s3 80

' SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCODE COMPON ENT CODE SUSCODE SUSCODE FoiT1 7 8 9 I S t r I@ I z l@ l a l@ lc lx i r l 3 l n l v l@

10 li 12 13 la 19 z l@ l z l@ 20

,,,, SE QUENTI AL OCCURRENCE REPORT REVISION LER EVENT YE AR REPORT NO. CODE TYPE NO.

@ ,aeg/ROV g 17 19 I l-l lo 11 17 I .l/l lo I, I Lt_J I-l 10 1 21 22 23 24 26 27 23 29 30 31 22 ACTIO N FUTURE EFFECT SHUTOCWN ATT ACHM E N T N P R O-4 PRIME COMP. CCMPONENT TAKEN ACTICN CN PLANT VETHOO HOURS SU8 MITT E D FCRM308. SU P'U E R MANUFACTURER lC l@lZ l@ l05Z l@ lZ @ l0 l0 l0 l l lN l@ lNl@ l43A l@ L l2 l0 l0 l@

JJ 34 36 37 40 41 42 44 4; CAUSE DESCRIPTICN AND CCRRECTIVE ACTiCNS i o phe motor operator torque switch failed because of a broken torque switch roller and I i ei l roller pin. A new torcue switch assembly was installed and the operator was I

, i2 l functionally checked by stroking the valve several times. I 1 3 i I i 4 I I 7 8 9 80 F ACILITY ,

VETkOO OF STATUS  % POW E R OTHER STATUS OiSCOVERY DISCOV E RY OESCRIPTICN 34 iis lG l@ p' l 0l 0lhl N/A l lC l@lSpecialinspection l

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i is8 I:3 I @ Liij@l AMOUNT N/A O, ACTiviTv I

@I N/A I 7 10 tt 44 45 80 PERSONNEL EXPOSURES NUM8ER TYPE O E SC RIPTION

• ii7 101010l@l:l@l

N/A 5

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,3 NRC USE CNLY ,

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o lN ISSUE [81 N/A J/ l [* l ll1Ill ll l{

7 8 9 10 68 68 80. S NAME OF PREPARER

• U PHONE:

4'.2-643-1258