ML19340E789

LER 80-042/03L-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

ML19340E789
Person / Time
Site:	Vermont Yankee
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: ML19340E786 ML19340E789
References
LER-80-042-03L, LER-80-42-3L, NUDOCS 8101150685
Download: ML19340E789 (1)

Text

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17 77) I LICENSEE EVENT RE.DORT LER 80-42/3L i s

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la!Ai !T S. 3.12.A.I.b. Refueline coerstions were i tediatelv *oceed until the oreblem !

l) i5I f was corrected. There were no sienificant events as a result of this cccurrence nor i f3iSfI *.-o, o *%o a n r.<v n A va, co ,ccanen o m ,,4 3 4 ,. %p,1e% , , , . m _, ca e.,_ v%4e a,y a n 4e ee l

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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. After I 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. I 7 3 3 f3

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