ML20040G709

LER 82-002/03L-0:on 820107,while Local Leak Rate Testing During Refueling Outage,Determined That Outboard MSIVs 3-203-2B & 3-203-2D Were Leaking in Excess of Tech Spec. Caused by Valve Packing Leakage.Packing Tightened

ML20040G709
Person / Time
Site:	Dresden
Issue date:	02/02/1982
From:	Rowley E COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20040G703	List: ML20040G702 ML20040G709
References
LER-82-002-03L-04, LER-82-2-3L-4, NUDOCS 8202160391
Download: ML20040G709 (3)

Text

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,n,,,; limits. This event had minimal effect on public safety since there was no leakage from l

, , , , , g the respective inboard isolation valve. Similar event reported by R.O. 81-08 on Docket  ;

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DEVIATION REPORT -

- O Commonwealth Edison PART Il TITLE OF DEVI ATION Dvn NO. 12 - 3 STA UNI 7

- 82 YEAR

- 2 NO.

OCCURRED Excessive Leakage Through The "B" Outboard MSIV l-7-82 0800 SYSTEM AFFECTED 203 PL ANT STATUS AT TIME OF EVENT TESTING Main Steam MODE Shutdown . PWR(MwT) 0 , LOAD <u.E3 0 y ,

DESCRIPTION OF EVENT While performing a local leak rate test per DTS 250-1, MSIV was found to be leaking in excess of the 11.5 SCFH Tech. Spec. limit. The valve will be retested following repairs by Mechanical Maintenance.

10 CFR50.72 NRC RED PHONE O O NOTIFICATION MADE YES NO EQUIPMENT F AILURE 17975 OVES O No noRx RE0uEST NO. aESPO~SiBtE SuPtRviS0a Ed Rowley n yt 1-9-82 P ART 2 l 0PERATING ENGINEER'S COWAENTS This failure exceeded the single MSIV leakage limit.

Indications are that the inboard valve is not leaking, ie., small or zero through leakage.

The official retest will be performed with Rx water level below the steam lines.

[ EVENT OF PUBLIC INTEREST O 2 2 HOUR NRC NOTIFICATION RE0'D 0 TECH. SPEC. VIOLATION TELEPH Tom Tongue (courtesv) 1-11-82 1030 REGION lil DATE TIME O NON REPORTABLE OCCURRENCE TELEGM/TELECOPY O l A DAv aEPOaTABLE/T.S. REGION iii DATE TiuE h 30 DAY REPORTABLE /T.S5 6.B.2 d.

CECO CORPORATE NOTIFICATION MADE I O ANNUAL /SPECL REPORT RE0'D IF ABOVE NOTIFICATION IS PER 10CFR21 A.I.R.

• C 5-DAY WRITTEN REPORT RE0'D PER 10CFR21 L.E.R. ,82-02/03L-0 F. A. Palmer 1-11-82 1159 TELEPH l CECO CORPORATE OFFICER DATE TIME 1

( PRELIMINARY REPORT g gg g COMPLETED AND REVIE4ED 7_7 7,p OPERATING ENGINEER _, , 7p TE , /

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INVESTIGATED REPORT & RESOLUTION ACCEPTED BY STATION REVIEW f h

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DEVIATION REPORT .

. Commonwealth Edison

• DVR NO. 12 - 3 -

82 - 9 STA UNgy YEAR  %

PART Il TITLE OF DEVI ATION OCCURRED Failure of the 3-203-2D to Pass LLRT l-20-82 1400 OATF T!vr SYSTEM AFFECTE 203 PLANT STATUS AT Tit /E OF EVENT TESTING Main Steam MocE Shutdown , P RiunT)

CESCRIPTION OF EVENT 0 . LOAD (M*E) 0 y 3 h While local leak rate testine the "D" main steam isolation valves. it was determined that the outboard isolation valve was leaking 21.24 SCFH which is in excess of the Tech. Spec. limit of 11.5 SCFH.

10 CFR50.72 NRC RED PHONE O O NOTIFICATION MADE YES NO EQUt PMENT FAILURE --

QYES O NO AORx aE0utST NO. aESPONSistE SuPERviS0a Edwad Rodey o,7, bM-M PART 2 l 0PERATING ENGINEER'S COWENTS The leakage will be reduced to less than the Tech. Spec. limit prior to Rx startup from refueling.

O EVENT OF PUBLIC I N TE R E ST O 24. HOUR NRC NOTIFICATION REC'D O 'TECN. SPEC. VIOLATION TELEPH tom Tongue (courtesy) 1-25-82 0930 3 REGION lli DATE TIME O NON REPORTABLE OCCURRENCE , N/A O '4 DAv aEP0aTABLE/T.S. REGION iii cATE TIME

@ 30 DAY REPORTABLE /T.S.6. 6. R . 2.d l

O CECO CORPOR ATE NOTIFIC ATION MADE IF ABOVE NOTIFICATION IS PER 10CFR21

[ ANNUAL /SPECL REPORT RE0*D A.I.R.

• C 5. DAY WRI TTEN REPORT REC ~ D PER 10CFR21 L.E.R.

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• E O Combined with 82-02/03L-0 CECO CORPORATE OFFICER CATE TIME DVR 12-3-82-2 PRELIMINA W REPORT Michael Wright 1-25-82 COMPLE TED \ND REVIE*ED OPEa ATI NG ENGINEER AM f OA7D /

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INVESTIGATED REPORT & RESOLUTION ,8 4 '

ACCEPTED BY STATION REVIEW Qu h f .

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