ML20062D315

/03L-0 on 781028:at 95% Rated Pwr,Lprm Calibr OD-1 Was Performed,Changing Cmflpd from 0.97 to 1.004.Flow Was Reduced After Which Peak LHGR Was Reduced to 99% of Its Limit.Caused by Inaccurate Base Distrib in Computer

ML20062D315
Person / Time
Site:	Hatch
Issue date:	11/13/1978
From:	Thomas Greene GEORGIA POWER CO.
To:
Shared Package
ML20062D313	List: ML20062D315 PM-78-439, Forwards LER 78-090/03L-0
References
LER-78-090-03L, LER-78-90-3L, NUDOCS 7811210346
Download: ML20062D315 (1)

Text

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] [At 95'. of ratOd cower , followina a pre-condit icninn ramp. nn em-1 RPFM calibratien) I b 0

] lwas performed. CMFLPD chanced from o. 97, orior to the calibration, to 1.004, after l '

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@ Ithe calibration. No flow chances or rod mo'vements had been made durino the OD-1. Flev l '

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] pas reduced within 5 minutes to correct the oroblem. Following the flow reduction, thol  !:

.' 4 D tocak LHGR was reduced, within 20 ninutos, to aceroxihtelv 99% of its limit. The LUGR I l'

] lindicatiori was in violation of Technical Soecifications, Section 3.11.1.B.' This is a I !I

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occurrence. See LER 78-71 and 78-A6. I SYSTEM 2AUSE CAUSE so COVP. VALVE (

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]. l calculation cf LT.CRin that recion. The OD-1 (LPF21 Culibration) corrected'the eroblem, I /

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g indicatino the violation. Reduction of flow reduced the LHG2 to within Toch Scoc limits. l l g [k bo further action was necessary.

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