ML20207H243
| ML20207H243 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/16/1988 |
| From: | Johnson I COMMONWEALTH EDISON CO. |
| To: | Murley T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20207H245 | List: |
| References | |
| NUDOCS 8808240410 | |
| Download: ML20207H243 (3) | |
Text
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/,~N Commonwealth Edison
/ One First National Plaza, Chicago, Illinois l
_ ] Address Reply 12: Post Office Box 767
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/ Chicago, Illinois 60690 0767 o
August 16, 1988 Mr. Thomas E. Murley, Director Of fice of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Quad Cities Station Unit 2 "Transmittal of Information Pertaining to Metallurgical Analysis of End Cap-to-Header Weld Overlay (02A-S10) -
Spring '88 Unit 2 IGSCC Inspection" NRC Docket No. 50-265 References (a):
Letter from I.M. Johnson to T.E. Murley dated June 13, 1988.
(b):
Letter from T. Ross to H.E. Bliss dated June 17, 1988.
(c):
Letter from I.M. Johnson to T.E. Murley dated July 14, 1988.
1 Dear Mr. Murleys In Reference (a), Commonwealth Edison provided mes'bers of your staff with the results of the Spring 1988 Quad Cities Unit 2 IGSCC Inspection.
This i
included information pertaining to the types of flaws found, as well as j
analytical and repair actions taken during the Spring 1988 refueling outage.
j After reviewing the results of the IGSCC inspection, your staff determined j
that the unit could be restarted and a more detailed Safety Evaluation Report (SER) would follow (Reference (b)).
Commonwealth Edison provided your staff with additional information on the results of this inspection in Reference (c) for consideration in the preparations of the detailed SER.
On July 26, 1988, representatives of Commonwealth Edison responded to inquiries of your staff regarding End Cap-to-Hebder Weld Overlay (02A-S10).
Attachment A provides a list of the conference call participants.
In the call, it was noted that samples were removed from the overlay repaired 02A-S10 0\\
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T.E.
urley August 16, 1988 weld which were examined by our System Material Analysis Department (SMAD).
We agreed at that time to provide your staff a copy of the SMAD report upon its finalization. We are now providing a copy of the report by this letter.
We believe it is important to note that of the three boat samples i
removed and examined, no defects were foundr It remains Commonwealth Edison's plan to re-inspect this overlay in future outages.and base any repairs upon the results of these inspections.
Please direct any questions you may have regarding this matter to this office.
Very truly yours,
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I. M. Johnso Nuclear Licensing Adm 1strator 1m Attachstents At List of July 26, 1988 Conference Call Participants B:
SMAD Report on Metallurgical Analysis of End Cap-to-lieader Weld Overlay (02A-S10)
Boat Samples from Quad Cities Unit 2 cc:
T. Ross - NRC (w/Att.)
A.B. Davis - Regional Administrator (w/ Attach)
Quad Cities Resident Inspector (w/o Attach)
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CMEIRENCE CALL w/NRR OUAD CITIES STATION UNIT 2 IGSCC INSPECTION RELATED TO ENDCAP JULY 26. 1988 2 30 p.m.
liAliE ORG.
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I.M. Johnson Ceco Nuclear Licensing Administrator Dan Wilgus CECO BWRED Engineer Tom Spry CECO-PSD ISI & Material Materials Engineer l
Dick Bax Ceco-Quad Cities Station Manager Dave Hogheem CECO-Quad Cities Regulatory Assurance Raam Gaf' ude CECO-EMAD Sect. Engineer Dave Pitcairn SI Pete Ricardella SI Thierry Ross NRC/NRR QC Licensing Project Manager Bill Koo NRC/NRR 4929K
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