05000313/LER-1980-020-03, /03L-0:on 800621,during Makeup Pump Test,Rod Index Limits Exceeded.Caused by Operator Inadvertently Opening Inlet to Standby Demineralizer.All Operators Reviewed Occurrence

/03L-0:on 800621,during Makeup Pump Test,Rod Index Limits Exceeded.Caused by Operator Inadvertently Opening Inlet to Standby Demineralizer.All Operators Reviewed Occurrence

ML19320D481
Person / Time
Site:	Arkansas Nuclear
Issue date:	07/16/1980
From:	Bramlett L ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19320D476	List: 05000313/LER-1980-020, Forwards LER 80-020/03L-0 05000313/LER-1980-020-03, /03L-0:on 800621,during Makeup Pump Test,Rod Index Limits Exceeded.Caused by Operator Inadvertently Opening Inlet to Standby Demineralizer.All Operators Reviewed Occurrence
References
LER-80-020-03L-01, LER-80-20-3L-1, NUDOCS 8007210413
Download: ML19320D481 (1)

LER-1980-020, /03L-0:on 800621,during Makeup Pump Test,Rod Index Limits Exceeded.Caused by Operator Inadvertently Opening Inlet to Standby Demineralizer.All Operators Reviewed Occurrence

Event date:
Report date:
3131980020R03 - NRC Website

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NRC FORM 364 U. S. NUCLE AR REGULATORY COMMISSION LICENS".'E EVENT REPORT EXHtBIT A 4

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EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h I During P-35C Operational test (makoup numo test ner on 1104.et Lio. III). I o 2 o

i Rod Index Limits were exceeded as defined in T.S.3.5.2.5.3.

Immediate. I j action was to reduce Rx. power until the Rod Index was in specification i o.

ITra I per T.S. Fiaure 3.5.2-18.

The highest reading was 208 and the limit is I o e i 206. There have been no site ]3r occurrences.

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l o i r l I T.S. 6.12.3.2(b).

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i o g,must be-placed in service.

The operator inadvertently opened the inlet g g3 i to the standby Demineralizer (T-368). This demineralizer had a high i

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