05000368/LER-1981-011-03, /03L-0:on 810224,review of Plant Protection Sys Surveillance Procedure Identified That Channel A,Steam Generator High Level Trip Setpoint Less Conservative than Required.Caused by Deficiency in Surveillance Procedure

/03L-0:on 810224,review of Plant Protection Sys Surveillance Procedure Identified That Channel A,Steam Generator High Level Trip Setpoint Less Conservative than Required.Caused by Deficiency in Surveillance Procedure

ML20004D741
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/19/1981
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20004D735	List: 05000368/LER-1981-011, Forwards LER 81-011/03L-0 05000368/LER-1981-011-03, /03L-0:on 810224,review of Plant Protection Sys Surveillance Procedure Identified That Channel A,Steam Generator High Level Trip Setpoint Less Conservative than Required.Caused by Deficiency in Surveillance Procedure
References
LER-81-011-03L, LER-81-11-3L, NUDOCS 8106090707
Download: ML20004D741 (2)

LER-1981-011, /03L-0:on 810224,review of Plant Protection Sys Surveillance Procedure Identified That Channel A,Steam Generator High Level Trip Setpoint Less Conservative than Required.Caused by Deficiency in Surveillance Procedure

Event date:
Report date:
3681981011R03 - NRC Website

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O NAC POmu Jae tr m U.1. HUCL&AA MtCULArORY COMut15408s LICENSEE EVENT REPORT EXHIBIT A 1 I l l 1 I CcNTnoe. stoCit:

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r om,q 80 EVENT DESCMiPT'ON AND PACSASL4 CCNSEQUENCES iO ITTil I Durino a review of comoleted Plant Protection System (PPS) surveillance i

t o isi t orocedures. it was identified that on the 10/3/80 routine monthly test I

Lo_u) I of PPS Channel A. the Steam Generator Hich laval trio setcoint was less I to_uj i conservative than that reouired by T.S. Table 2.2-1.

At the time of the i t o is i I monthly test. the setooint was adiostad oer the surveillance crocedt re Io i > l 1_ and channel A returned to service.

However. the crocedure did not can-I tain a mechantm to identify whether or not the as-found(Cont. on next cat 9e.)

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i,ioi i The failure to identify the setooint being outside of the allowable value; range was caused by a deficiency in the surveillance crocedure.

Procedunes tii,ii have been revised to insure that a verification is perfonned.

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t Licensee Event Report # 81-011/03L-0 (Cont.)

setpoint value was outside of Tech. Spec. Limits.

Channels B, C & D remained operable, leaving a been no similar occurrences. 2 out of 3 reactor trip logic.

There have Reportable per T.S. 6.9.1.9.c.

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