ML20040F496

LER 82-001/03L-0:on 820103,outer Seal on Vacuum Breaker 3-1601-32B Found Leaking in Excess of Tech Spec Limit. Caused by Worn Rubber O-ring Seal.Seal Will Be Replaced & Valve Retested During Present Refueling Outage

ML20040F496
Person / Time
Site:	Dresden
Issue date:	01/29/1982
From:	Rowley E COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20040F495	List: ML20040F494 ML20040F496
References
LER-82-001-03L-02, LER-82-1-3L-2, NUDOCS 8202090267
Download: ML20040F496 (2)

Text

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, ,,;4.7.A.2 limit (29.38 SCFH). This event was of minimal significance because the inner  ;

seal did not leak, preventing through leakage. No effect on public health or safety. g Similar occurrence: DVR 12-2-77-96.

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de CAUSE DESCRIPTION AND CCRRECTWE ACTIONS

,i,a;jThe cause of this leakage was a worn rubber 0-ring seal. This seal will be replaced and I

,,,,,gthe valve retested during the present refueling outage. No further action is deemed l y

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DEVIATION REPORT t 1f ) Commonwealth E " son DvR No.

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UNIT YEAR NO.

, P ART I l TITLE OF DEVI ATION OCCURRED 1-3-82 0330 Failure of the Seal on the Vacuum Breaker 3-1601-32B nArt vivr SYSTEM AFFECTED 1600 PLANT STATUS AT TIME OF EVENT TESTING Pressure Suppression uoDE Shutdown . PWR(MWT) 0 . LOAD (MAE) 0 g, O DESCRIPTION OF EVENT The outside seal of the vacuum breakers positioning arm was found leaking during the local leak rate test of Vacuum Breaker 3-1601-32B. Leakage was 31.70 SCFH.

Tech Spec limit is 29.38 SCFH.

10 CFR50.72 NRC RED PHONE O 0 NOTIFICATION MADE YES NO EQUIPMENT FAILURE 17886 GYES O NO .0Rx RE0ueST NO. RESPO~SiBtE suPraviSOR M EdeY DArE M4 P ART 2 l 0PERATING ENGINEER'S COMMENTS The unit was in cold shutdown during the discovery of the exCessRe leakage. The seal will be repaired and retested prior to startup from refueling.

O EVENT OF PUBLIC INTEREST C 24= HOUR NRC NOTIFICATION REQ'D TELEPH Mike Jordan (courtesy) 1-5-82 1400 0 TECH. SPEC. VIOLATION REGION III DATE TIME O NON REPORTABLE OCCURRENCE TELEGM/TELECOPY C 14 DAY REPO R TA BL E/ T. S. ,

REGION 118 DATE TIME

@ 30 DAY REPORTABLE /T.S.6.6.B.2.d Ceco CORPORATE NOTIFICATION MADE

] ANNUAL /SPECL REPORT REC'D IF ABOVE NOTIFICATION IS PER 10CFR21 A.I.R. e

] 5. DAY WRITTEN REPORT REQ'D PER 10CFR21 L.E.R. 482-01/03L-0 TELEPH . . a mer M-N UN CECO CORPORATE OFFICER DATE TIME PRELIMINARY REPORT COMPLETED AND REVIEWED Michael Wright 1-5-82 OPERATING ENGINEER , D ATE) / '

INVESTtGATED REPORT & RESOLUTION

• l' ACCEPTED BY STATION REVIEW ). N , . . .. e _ J d .

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RESOLUTION APPROVED AND AUTHORIZED FOR DISTRIBUTION ,

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$6 5176 (FORM 15 52.ft 10 61 O WPr #M j il I

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