05000237/LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl

Forwards LER 82-026/03L-0.Detailed Event Analysis Encl

ML20058J369
Person / Time
Site:	Dresden
Issue date:	07/20/1982
From:	Scott D COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20058J371	List: 05000237/LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl 05000237/LER-1982-026-03, /03L-0:on 820701,MO2-1501-5C Failed to Close & Breaker Tripped.Caused by Stuck Closed Contact in Reversing Contactor Causing Short Circuit & Tripped Breaker.Contactor Replaced & Valve Successfully Cycled
References
82-805, NUDOCS 8208090242
Download: ML20058J369 (2)

LER-1982-026, Forwards LER 82-026/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2371982026R00 - NRC Website

text

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Commonwealth Edison O

Dresden Nucletr Power Stition gj g RA #1

/ Morris, Illinois 60450 Telephone 815/942 2920 July 20, 1982 DJS LTR: #82/805 James G. Keppler, Regional Administrator Directorate of Regulatory Operations Region III U. S. Nucicar Regulatory Commission 799 Roosevcit Road cien Ellyn, Illinois 60137 Reportabic Occurrence Report #82-26/03L-0, Docket #050-237 is being sub-mitted to your office in accordance with Dresden Nuc1 car Power Station Technical Specification 6.6.B.2.(b), conditions leading to operation in a degraded mode permitted by a limiting condition for operation or plant shutdown required by a limiting condition for operation.

D.

D. J. Scot Station Supef.ntendent Dresden Nuc1 car Power Station DJS:mb Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control U. S. NRC, Document Management Branch i

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bommonwealth Edison DEVIATION REPORT DVR ND.

82

• 43 STA UNIT YEAR NO.

PART 1l T I TL E O F DEVIAfl0N OCCURRED 7/1/82 0030 LPCI M02-1501-SC Suction Valve Breaker Failure caer

...,r SYSTEM AFFECTED 1500 PL ANT STATUS AT TIME OF EVENT TESTING I.PCI RUN 2335 760 E

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DESCRIPTION OF EVENT

Breaker tripped while attempting to close LPCI MO-1501-SC valve during LPCI valve operability test, DOS 1500-1. On second ettempt to.close valve, arching was observed from-the outside of the motor control center cubicle.

10 CFR50.72 NRC RED PHONE O

O NOTIFICATION MADE YES NO EQUIPMENT FAILURE 99199 QvEs O ~0

.0ax RE00Esr ~0.

RFsPONs l Rt E sOPrRvi s0R M. Evans 0Arr 7/1/82 PART z l 0PERATING ENGINEER'S CoWENTS Main contractor in MCC cubicle was replaced and breaker and valve operated satisfactorily.

[ EVENT OF PUBLIC I N TE R E ST 24 HOUR NRC NOTIFICATION REQ'O TECH. SPEC. VIOLATION TELEPH N/A REGION 111 OATE TIME NON REPORTABLE OCCURRENCE N/A TE N /TELECOPY O 14 OAY REPORTABLE /T.S.

REGION til DATE TIME

@ 30 DAY REPORTABLE /T.S.6.6.B.2.b ANNUAL /SPECL REPORT REQ'O IF ABOVE NOTIFICATION IS PER 10CFR21 A.I.R.

m 5-DAY WRITTEN NEPORT REQ'D PER 10CFR21 L.E.R. e82-26/03L-0 F. A. Palmer 7/8/82 1046 77t

,g CECO CORPORATE OFFICER DATE TIME PRELIMINARY REPORT John M. Almer 7/7/82 C0t4PLETED AND REVIE*ED U,,ERATING ENGINEER

/O A TE INVESTIGATED REPORT & RESOLUTION g

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ACCEPTED BY STATION REVIE#

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