ML20052B412

LER 82-010/03L-0:on 820325,while Unit 2 Was in Normal Operation & Unit 3 in Refuel,Pilot Cell Voltage Readings Were Not Taken for Units 2 & 3 Dc Batteries.Caused by Operator Error

ML20052B412
Person / Time
Site:	Dresden
Issue date:	04/20/1982
From:	Morgan W COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20052B403	List: ML20052B402 ML20052B412
References
LER-82-010-03L-01, LER-82-10-3L-1, NUDOCS 8204300390
Download: ML20052B412 (2)

Text

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LICENSEE EVENT REPORT CONTROL sLoCx: l l l 1 -l l@ (Pt. sass PMINT 00 TYPt ALL REQUIRED INPORMATIONI t o lil8 l9 il t i UCENSEE

• n l a iCODE s 12 l@l 0101 - 10101010 14 15 I O I - 10 l 0 20Gl4 uCENSE NUMsER 2e 11 Iilil11@l uCENsE TYPE JC l

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EVENT DESCRIPTION AND PROSA8LE CCNSEQUENCES h l o I : 1 l While Unit 2 was in normal operation and Unit 3 was in refuel, the pilot cell voltage l g ; readings were not taken for the Unit 2 or Unit 3 DC batteries as required by Technical l

,9,g, g Specification 4.9.B.l. The significance was minimal since the daily and weekly surveil- l

,9,,, , lances revealed that the batteries were operable. There was no effect to public health  ;

, g g or safety. Previous occurrences: R.O. 81-68/03L-0, 81-08/03L-0, Docket 50-249. ,

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. stouSNTIAL OCCURRENCE REPoMT REVis3ON LE R EVENT YEAR REPORT No. CQoS TYPE No.

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44 CAuss OESCRIPTION AND CCRRECTIVE ACTIONS @

litol LThecausewasattributedtooperatorerror. Voltmeter was damaged. Operator did not re- [

, , , , , gplace it and consequently did not take the pilot cell voltage readings. Immediate action l lwas to review the previous daily and weekly surveillances to determine if the batteries  ;

g were operable. Subsequent readings verified batteries were operable. Event will be re- g viewed with Shift Supervisors to prevent recurrence.

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% POWER oTNER STAT 1Js OtsCOV RY OlscoVERY DESCRIPTloN I i I s. 1 I E l@ l 0l 9 l 8i2l@lis

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Surveillance Test

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( PERSONNEL EXPOSURE:

NumeER TYPE oEsCRIPT1oM N/A l

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N/A 820430oM o l

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NAME OF PREP ARER PHONE: i

DEVIATION REPORT Commonwealth E_. son DvR so. 12 - 2 81 16 STA UNIT YEAR NO.

PART 1l TITLE OF DEVIATION Failure to Take Unit 2 and 3 OCCURRED Battery Pilot Cell Voltages 3/25/82 1200 OATE T!vE SYSTEM AFFECTED 8300 EVENT PLANT STgT S unAT TIME OF 2500 (2) 800 (2) }ESTIN DC Systems MODE 7 7 qip . PwR(Mari g rp . LoADtu E) n en y3 DESCRIPTICN OF EVENT 2 x hu 3 24/48 VDC, 125 VDC or 250 VDC batteries as required by Tech. Spec. Surveillance Requirement 4.9.B.1.

10 CFR50.72 NRC RED P'40NE O E NOTIFICATION MADE YES NO E QU I PMEN T F A I LU R E OVES G NO .oR- aEcuEST ~o. RESPoNSistE SuPERv>Soa nichael wright 0,,, mun P ART 2 l OPERATING ENGINEER'S C044ENTS A notation was made on the surveillance procedure stating that the fluke voltmeter used for voltage reading was broken. This event will be reviewed with the shift supervisors to prevent recurrence.

O EVENT OF PUBL IC INTEREST O 24. Hour NRC NoTiriCATioN REo D TELEPH Tom Tongue (courtesy) 3/25/82 1300 O TECH. SPEC. VIOLATION REGION lil DATE TIME O Nos aEeoRTAeLE OCCURRENCE ,,t,c ,,,,L,co,y 0 '4 oAv aEPoaTABLE/T.S. REGION iii DATE TiuE O 30 DAY REP O R T A BLE / T. .

CECO CORPORATE NOTIFICATION MADE C ANNUAL /SPECL REPORT REQ'O IF ABOVE NOTIFICATION IS PER ICCFR21 A.I.R. e

] $. DAY WRI TTEN REPORT REQ'D PER 10CFR21 L.E.R. , 82-10/03L-0 7 t pg F. A. Palmer 3/25/82 1457 CECC CORPORATE OFFICER DATE TIME PRELIMINARY REPORT Michael Wright 3/25/82 COMPLETED AND REVIE*ED GFER ATING ENGINE ER _

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IN VESTI GATED REPORT 4 RESOLUTION g ACCEPTED BY STATION REVIE* sy b p% % - > _ . _ _ .

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4ESOLUTION APPROVED AND AUTHOR I ZED FOR DI STR I BUTION p -

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