05000281/LER-1981-014-03, /03L-0:on 810212,RM-CC-106 Alarm Setpoint Found Outside Tech Spec.Caused by Personnel Error.Setpoints Reset

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/03L-0:on 810212,RM-CC-106 Alarm Setpoint Found Outside Tech Spec.Caused by Personnel Error.Setpoints Reset
ML19350A325
Person / Time
Site: Surry Dominion icon.png
Issue date: 03/09/1981
From: Joshua Wilson
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139B155 List:
References
LER-81-014-03L-01, LER-81-14-3L-1, NUDOCS 8103130472
Download: ML19350A325 (2)
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LER-1981-014, /03L-0:on 810212,RM-CC-106 Alarm Setpoint Found Outside Tech Spec.Caused by Personnel Error.Setpoints Reset
Event date:
Report date:
2811981014R03 - NRC Website
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IVENT OESCRIPTf 0N ANO *.05 A8.E 00NSE0utNCES h i o,2 6 i On February 12.1981, the alarm setpoint for RM-CC-106 was found to be in error

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(greater than twice background). This condition had existed since Februarv 6,1981.

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io4a,j This is contrary to T.S. 3 7. Table 3.7-5 and is reportable oer T.S. 6.6.2.b m.

I io6s,i Since RM-CC-106 remained functional and the activity in the comoonent cooling syste, I Io is 1 I did not exceed twice background, the health and safety of the rublic vere not l

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ATTACHMENT 1

___.-._ _..SURRY E0WER STATION, UNIT 2 DOCKET NO:

50-281 REPORT NO:

81-014/03L-0

__--. EVENT DATE:

2-12-81

- -- ----TITLE-OF EVENT : IMPROPER SETPOINT FOR RM-CC-106 1-. DESCRIPTION.OF EVENT:

On-February 4,1981, as a result of data obtained from_PT-26.1_(daily Radiation Monitor Surveillance), the alarm setpoints for RM-CC-106 were reset. On February _12,1981, as required by Unit i radiation _.monitora_ refueling calibration procedure, the setpoints for RM_-CC-106 were recalculated. It was

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discovered-that the February 6th's calculations wera.in.. error ancL i ha al am __

setpoint had been set at greater than twics background. This is contrary to Tech. S sc.3v7 and reportable per Tech. Spec._6.6.2..h(4)._

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- -- 2 r-PROBABLF CONSEQUENCES and STATUS of REDUND ANT EQUIPMENT t. ----..._ _.._... _. -. -......__

A review of component cooling activity levels, for the per$od of concern, indicated that the activity in this system liadJnot exceeded-twice background.

Since RM-CC-106 remained functional, although the alarm setpoint was slightly

._ higher (factor of 1.5) the health and safety of the public were not affected.

3.

CAUSE

l The cause of the event was personnel error. Specifically. the setpoint calculations on February 6,1981 were not verifted as requf red by Health Physte's procedure.

4--

trru.uTATCORRECTIVE ACTION:

RardiXrTDtnnonitor, RM-CC-106, alarm setpoints-vere-reset--to-compl-y-with-Techi---

t Specs.

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SUBSEQUENT CORRECTIVE ACTION:

..None required.

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AbstUnd UA&sp TO PREVENT RECURRENCE:

l The personnel involved have been re-instructed to insure compliance with established procedures.

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CENERIC IMPLICATIONS:

None.

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