05000271/LER-1980-042-03, /03L-0:on 801211,control Rod Block Was Not Received as Required Per Tech Spec.Caused by Arm on GE Limit Switch Model CR-1156 Working Loose & Being Bent by Platform.Arm Straightened & Tightened

/03L-0:on 801211,control Rod Block Was Not Received as Required Per Tech Spec.Caused by Arm on GE Limit Switch Model CR-1156 Working Loose & Being Bent by Platform.Arm Straightened & Tightened

ML19340E789
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	01/12/1981
From:	Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340E787	List: 05000271/LER-1980-042, Forwards LER 80-042/03L-0 05000271/LER-1980-042-03, /03L-0:on 801211,control Rod Block Was Not Received as Required Per Tech Spec.Caused by Arm on GE Limit Switch Model CR-1156 Working Loose & Being Bent by Platform.Arm Straightened & Tightened
References
LER-80-042-03L, LER-80-42-3L, NUDOCS 8101150685
Download: ML19340E789 (1)

LER-1980-042, /03L-0:on 801211,control Rod Block Was Not Received as Required Per Tech Spec.Caused by Arm on GE Limit Switch Model CR-1156 Working Loose & Being Bent by Platform.Arm Straightened & Tightened

Event date:
Report date:
2711980042R03 - NRC Website

text

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s aeCaTOArs ao E3caipr:CN ANO 8ACSASLE 00NSECUENCE3 h EvENr Ia+:I l Durine refueline coerations when the refueline clatform was moved ever the core withi laia!I a fuel assembiv en the hoist, a control red block was not received as reOutred bv la!Ai !T S.

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j-i a i l The failure of the interlock was due to the arm on the limit switch working loose i

t i i ! I and beinz bent by the olatform. This limit switch indicates when the refueline f

j,,-t1clatfor= is over the core. The arm was stra12htened out and tightened uo.

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l,alI repair, the refueline interlocks were tested satisfactorilv. The limit switch is I

ti44 ? I a model CR-1156, manuf actured bv General Electric.

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