ML20027B505

LER 82-067/03L-0:on 820813,two Auxiliary Feedwater Pump Turbine Low Suction Pressure Switches Failed to Perform During Functional Test.Caused by Switches Being Out of Calibr,Possibly Due to Instrument Drift or Misadjustment

ML20027B505
Person / Time
Site:	McGuire
Issue date:	09/10/1982
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027B504	List: ML20027B503 ML20027B505
References
LER-82-067-03L, LER-82-67-3L, NUDOCS 8209210147
Download: ML20027B505 (1)

Text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o j 2 l l While in mode 1, during performance of the " Aux. Feedwater Low Suction Function 4

!ojaj!al Test" two Aux. Feedwater Pump Turbine (AFPT)1ow suction pressure switches  !

l a l4 i l failed to perform properly and were declared inoperable. This violates T.S.3.3.2 l o !s l lwhich is reportable per T.S.6.9.1.13(c) . A review of work reauests on 8/26/82 l lojell discovered that the switches had been incorrect 1v calibrated when corrective l j o l 7 l l action was performed for the 8/13/82 failure, and the switches were anain de-  !

l a ; P ! lclared inoperable. Since at no time did a loss of the assured water supply to th'e s AFPT occurreQealtil ,ggyi safat;y of the public were unaffgrJ,ed, .USCODE y,uE

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CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h i110llThe switches (United Floceric Tvno .T an ?) were found out of calibration (on 8/14/

Iilil182);possibly due to instrument drift nr minndjuntmone- The incorrect adjugement l

[ t l 2 l lduring corrective action on the 8/13/82 failure was due to nersonnel error attriL i s l 3 l lbutable to a lack of training in the use of setpoints obtained from the Mechanid I 114 l l cal Instrument List. The switches were recalibrated and declared operable. Apprd-

.,grgtetrainingwillbegiven,@and,m,9.Q..,E.,ogs

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NAME OF PREPAHER Phillip B. Nardoci PHONE: (704) 373-7432 l