05000333/LER-1980-090-03, /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

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/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:
References
LER-80-090-03L, LER-80-90-3L, NUDOCS 8012290451
Download: ML19351F084 (1)


LER-1980-090, /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
Event date:
Report date:
3331980090R03 - NRC Website

text

NRC 70r.M C66 U. S. NUCLEAR REGULATORY CCMMisSICN (7 77) 4

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8 60 61 CCCM ET NLMg EM 68 69 EVENT CATE 74 75 REPCRT CATE 80 EVENT CESCRIPTICN AND PRCB A8LE CCNSECuENCES h ja12l l INTERIM REPORT: During normal operation, while conducting surveillance required l

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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

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