ML20049J515

LER 82-013/03L-0:on 820126,two Upper Head Injection Train a Accumulator Tank Level Switches Miscalibr,Rendering Isolation Valves Inoperable.Caused by Faulty Data Programmed Into Computer Memory.Program Corrected

ML20049J515
Person / Time
Site:	McGuire
Issue date:	02/25/1982
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20049J510	List: ML20049J509 ML20049J515
References
LER-82-013-03L, LER-82-13-3L, NUDOCS 8203180297
Download: ML20049J515 (1)

Text

T NaC POmas see U.S.NUCLEAA RECULATORY comme tsacos (F FFI LICENSEE EVENT REPORT EXHIBIT A CONTROL SLOCE: l l l l l l l (rLEAss PAINT OR TYPE ALL REQU.ReO INFORMATiOM i e@

l l 8 l NIcIMi r e e cI silcaos

. ucamas l@tol 0 l 0l -10 lo lucease in O l avassa 0l 01 -l010 l@l4 2e a l1 11 usews l 1l 11@l rvre e se car na @

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"% I, e l0 l 5 loccmer ei 0 l 0numosa l0 l116 lse9 @l0 se 11 l 2 l 6l Rl 2hl0 event care #4 re lmercar 2 l 2loare 5l8l2l@ se tveMT cesCnierioN ANO PROSA8LS CONSEQUENCES h o lWhile in Mode 1, during performance of annual preventative maintenance, two upper r.u s a lhearl iniection (IfilT) acc mulator tank level switches for IfilT train "A" were mis-l

@ Ical ibrat ed . Two tilli train "A" isolation valves were subsequently declared inopert o e table per T.S.3.5.1.2 which is reportable pursuant to T.S.6.9.1.13(a), and one hoyr r:ura llater reactor shutdown was commenced. Since train "B" components were operable, g o 7 lanr1 the train "A" valves were either open and disabled or open and operabic but [

o Islic.htiv miscalibrated, the safety function of the UllI accumulator was never dist-esabled and healLh and saleLy ut the pubile Wet'e unallected. es ccoE - E Ma co ponentcaos su sS$e o s e

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43 cause OesCnieTios ANo Conneenve Actions 27 i o lDue to faulty data programmed into computer memory, the work requests generated ,

i lhv the computer aided preventative maintenance program (PMP) specified an inapprp-i lpriate calihration procedure for the instruments involved. The UllI accumulator g 2 lwas restored to operable,and the programmed PMP data corrected. A review of PMP g i . l work requests to ensure that supplemental data is appropriate has been initiated. g

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