05000366/LER-1981-062-03, /03L-0:on 810624,core Max Fraction of Limiting Power Density Was Not Calculated & Average Power Range Monitor Gains Not Adjusted Per Tech Specs.Caused by Evaluation Program Blocked for Calibr.Personnel Counseled

/03L-0:on 810624,core Max Fraction of Limiting Power Density Was Not Calculated & Average Power Range Monitor Gains Not Adjusted Per Tech Specs.Caused by Evaluation Program Blocked for Calibr.Personnel Counseled

ML20009C575
Person / Time
Site:	Hatch
Issue date:	07/09/1981
From:	GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009C572	List: 05000366/LER-1981-062, Forwards LER 81-062/03L-0 05000366/LER-1981-062-03, /03L-0:on 810624,core Max Fraction of Limiting Power Density Was Not Calculated & Average Power Range Monitor Gains Not Adjusted Per Tech Specs.Caused by Evaluation Program Blocked for Calibr.Personnel Counseled
References
LER-81-062-03L, LER-81-62-3L, NUDOCS 8107210236
Download: ML20009C575 (2)

LER-1981-062, /03L-0:on 810624,core Max Fraction of Limiting Power Density Was Not Calculated & Average Power Range Monitor Gains Not Adjusted Per Tech Specs.Caused by Evaluation Program Blocked for Calibr.Personnel Counseled

Event date:
Report date:
3661981062R03 - NRC Website

text

F NRC FORN1366 U. S. NUCLE AR REGULATORY COMMISSION (7 77(

LICENSEE EVENT REPORT control B LOCX: l l

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60 61 DOCKET NUMBE R 66 69 EVENT DATE 74 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 lDurina s teady state coeration at 92T thermal oower witn CMFLPD areater i

lotalIthan fraction of rated power, CMFLPD was not calculated and the APRM i

10141laains ad.iusted once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> as reauired by Tech Soecs section I

loisi14.2.2.C.

There were no effects on Dublic health and safety due to this I

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This is a nonrecetitive event.

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33 34 35 36 31 40 41 42 43 44 17 CAUSE DESCRIPTION AND CORRECTIVE ACT!ONS h I li101IThe core thermal limit evaluation program (P1) had been blocked for LPRMi i

lililIcalibration.

When calibration was completed and P1 again run the 12-1 li,i2i lhour time limit for CMFLPD calculation har been exceeded by 7 hrs.

Res-I j ii l a l lponsible personne', wcre instructed to assure core thermal limits are I

,iii iIcalculated at the required frequency.

Unit is now in full compliance.

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DESCRIPTION

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LOSS OF CR DAMAGE TO FACILITY TYPE

DESCRIPTION

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8107210236 810709 80

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DESCRIPTION

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f LER.#:

50-321/1981-062 Licensee:

Georgia Power Company Facility Name:

Edwin I. Hatch Docket #:

50-321

Narrative

Report for LER 50-321/1981-062

. Tech Specs normally requires that core maximum fraction of limiting power density (CMFLPD) be calculated at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

However, when operating with a CMFLPD greater than fraction of rated power (FRP) Tech Specs requires that CMFLPD be calculated and the APRM gains set to CMFLPD at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

At 20:29 on 6-23-81, the periodic program l

P1 was run then blocked to perform LPRM calibrations.

At that time CMFLPD was greater than FRP, and the APRM gains were set to CMFLPD.

Personnel involved were unaware of the requirement i

for more frequent CMFLPD calculations in this situation.

l Following completion of the LPRM calibrations the P1 program was restarted at 15:33 on 6-24-81, calculating CMFLPD, The

- APRM gains were then reset to CMFLPD.

Corrective action taken was to instruct responsible personnel l

of the importance of assuring that core thermal limits are calculated at the fraquency described in rech Specs.

There were no effects on public health and safety due to this event.

fhis is a nonrepetitive event.

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