05000316/LER-1980-012-03, /03L-0:on 800305,while Performing Surveillance Test,Steam Generator Water Level low-low Trip Bistable Found to Trip at 11:05% Narrow Range Instrument Span.Cause Unstated.Bistable Recalibr & Returned to Svc

/03L-0:on 800305,while Performing Surveillance Test,Steam Generator Water Level low-low Trip Bistable Found to Trip at 11:05% Narrow Range Instrument Span.Cause Unstated.Bistable Recalibr & Returned to Svc

ML17326A610
Person / Time
Site:	Cook
Issue date:	03/25/1980
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A609	List: 05000316/LER-1980-012, Forwards LER 80-012/03L-0 05000316/LER-1980-012-03, /03L-0:on 800305,while Performing Surveillance Test,Steam Generator Water Level low-low Trip Bistable Found to Trip at 11:05% Narrow Range Instrument Span.Cause Unstated.Bistable Recalibr & Returned to Svc
References
LER-80-012-03L, LER-80-12-3L, NUDOCS 8004010500
Download: ML17326A610 (2)

LER-1980-012, /03L-0:on 800305,while Performing Surveillance Test,Steam Generator Water Level low-low Trip Bistable Found to Trip at 11:05% Narrow Range Instrument Span.Cause Unstated.Bistable Recalibr & Returned to Svc

Event date:
Report date:
3161980012R03 - NRC Website

text

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LICENSEE EVENT REPORT U.

CLEAR REGULATORY COMMISSION

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~03 TRIP BISTABLE WAS FOUND TO TRIP AT A VALUE CORRESPONDING TO 11:05 PERCENT NARROW RANGE INSTRUMENT SPAN.

THIS IS NON-CONSERVATIVE IN RESPECT TO T.S.

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