ML20009B533

LER 81-016/03L-0:on 810515,tests Indicated That Two Foxboro RCS Flow Transmitters in Loop a Were Out of Calibr.Caused by Setpoint Drift.Transmitters Recalibr

ML20009B533
Person / Time
Site:	Kewaunee
Issue date:	06/12/1981
From:	Molzahn D WISCONSIN PUBLIC SERVICE CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009B532	List: ML20009B531 ML20009B533 ML20009B535 ML20009B538
References
LER-81-016-03L, LER-81-16-3L, NUDOCS 8107160235
Download: ML20009B533 (1)

Text

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• 8 61 69 DATE 14 REPORT DATE EVENT DESCRIPTION AND PROBA.tE CONSEQUENCES h lGI2l lDuring refueling operation, survai11 =,,, a testing indicated that two RCS flow l

[O I3 l l transmitters in loop A were out of enlibration misch rhnt their low flow reactor trip l 10141 l settings (2/3 logic) were a mnv4==== 0.37% be10weha Ts requif red neepnine. Thin i IOI5I i placed the facility under reporting requirament T.S.6.9.2.b(1) and T.S.2.3.a.4.A. l l O 16 I l Reactor trip would have occurred voii 2%ve che limiting e-vin nnine mannmed in the l I O I 7 I I FSAR. The reactor was shutdown at the rima of dincoverv. There van up2ffect qLp d i O I a i l operation or public safety. I 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCODE COMPONENT CODE SUBCODE SUSCODE

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i l O I I Instrument drif t of the Foxboro flow trappmitters caused them to be out of I I1 11I I calibration. The transmitters were nr.alibrated with no indication of further I Iil7l l problems. No further action required. I 12 131 I l 11 141 l l 7 8 9 80 ST S  % POWER OTHER STATUS ISCO R DISCOVERY DESCRIPTION L1_l 5_] lJLjh l 0 l 0 l 0 lhl NA l W@l burveillance Testing l ACTI% *Y CO TENT RELJASE3 OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 1 6 [Z_) h ( Zj@l NA l l NA l 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER Ti/E i 7 l 0] 0l OlhiZ '

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7 2 O 8 9 ISSUE ] NA @ DESCRIPTION O 10 S PDR l GE 69 lllllllllllllj 80 5 NAME OF PREPARER D. J. Molzahn LdUNt 15 198l psoss; (414) 388-2560 {