ML19351F084

LER 80-090/03L-0:on 801130,MSIV 29-A0V-80A 90% Open Limit Switch Did Not Reset When Valve Was Fully Opened.Cause Undetermined.Fuses for Follower Relay Pulled to Keep Channel Tripped While Being Repaired

ML19351F084
Person / Time
Site:	FitzPatrick
Issue date:	12/17/1980
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19351F078	List: ML19351F077 ML19351F084
References
LER-80-090-03L, LER-80-90-3L, NUDOCS 8012290451
Download: ML19351F084 (1)

Text

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L 'CENSEE EVENT REPORT CCNTRCL 3LCCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQutREO INFORMATION) lo til8 I9 NI Yi Ji Al ?! il@l 0101-101010101-101010l@l to 15 UCENSE N6MSEA 25 41111 26 1 1!1l@l uCENSE TY8E 40 l

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CCCM ET NLMg EM 68 69 EVENT CATE 74 75 REPCRT CATE 80 61 EVENT CESCRIPTICN AND PRCB A8LE CCNSECuENCES h ja12l l INTERIM REPORT: During normal operation, while conducting surveillance required l io,3; ; by TS Table 4.1-1, Main Steam isolation Valve 29-A0V-80A 90 percent open limit l

.3 i 4 , j switch diC not reset when the valve was fully open. Other 90 percent switches l i, !3, I functioned properly and the failure is conservative in nature. No significant j i ; ,3 ; ; hazard existed. l lCi7!I I l

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}1 i;jl Cause of failure can not be determined at this time. Fuses for follower relay  ;

i , ,,il are pulled to orovide assurance that channel remaines in tripped condition until t investigation / repairs can be performed during future plant shutdown. Followup l i, ;3, ; report will be submitted. l i

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