PNO-III-93-051, on 930901,licensee Shut Unit 2 Down to Repair body-to-bonnet Leak in Feedwater Check Valve Which Makes Up Part of Containment Isolation Boundary.Leak Was Reduced to Weep by Tightening Bonnet Studs

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PNO-III-93-051:on 930901,licensee Shut Unit 2 Down to Repair body-to-bonnet Leak in Feedwater Check Valve Which Makes Up Part of Containment Isolation Boundary.Leak Was Reduced to Weep by Tightening Bonnet Studs
ML20203G290
Person / Time
Site: Quad Cities Constellation icon.png
Issue date: 09/02/1993
From: Beverly Clayton, Hiland P
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-93-051, PNO-III-93-51, NUDOCS 9712180097
Download: ML20203G290 (1)


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! Datot Scptctbar 2, 1993 f Ch 7, PRELIMINARY NOTI ICATION QF EVENT OR UNUSUAL OCCURRENC': PN39351 This preliminary notification constitutes EARLY notico of events i , of POSSIBLE safety or public interest significance. The information is as initially rocoived without verification or evaluation, and is basically all that is known by the Region III staff on this date.

Facility: Licensee Emeraoncy classification Commonwealth Edison Co. General Emergency Quad Cities 2 Sito Area Emergency Cordova, Illinois Alert Unusual Event Docket No. 50-265 X N/A

Subject:

SHUTDOWN TO REPAIR FEEDWATER CllECK VALVE On September 1, 1993, the licenseo shut Unit 2 down to repair a body-to-bonnet leak in a feedwater check valvo which makes up part of the containment isolation boundary. The initial leak rate was 5 to 10 gallons por minuto, but the leakage was reduced to a weep by tightening the bonnot studs.

The licensoa expects to restart the unit on September 5, 1993.

O/

j The State of Illinois will be notip ad.. The information in this preliminary notification has been reviewed with licensco

+ management.

Rogion III (Chicago) was notified of the outage by the licenseo at 7 a.m. on September 1, 1993. This information is current as of 10 a.m. on September 2, 1993.

CONTACT:

Pat lliland Brent Clayton 708/790-5270 708/790-5574 DISTRIBUTION:

STANDARD E-MAIL DISTRIBUTION FAX TO: $L T5' INPO NSAC -

DCS (Orig),C^

. LIC NRC OPS CTR DRT PDh (8/634-3343) OIG Trans)

A. Byrdsong, NRR '

(d T State: (IL) .

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