TXX-3038, Informs NRC of Plans to Start Onsite Examination Activities Re Pipe Wall Thickness by 790920
| ML19208A755 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/11/1979 |
| From: | Gary R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| TXX-3038, NUDOCS 7909170417 | |
| Download: ML19208A755 (1) | |
Text
TENAS UTILITIES GENERATING CO.TIPANY 2001 IHtYAN Tt)Wicit + I)AILAN.TEXAF 7t%201 September 11, 1979 R. J GARY "l"
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Mr. W. C. Seidle, Chief Reactor Construction & Engineering Supoort Branch U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement 611 Ryan Plaza Dr., Suite 1000 Docket Nos. 50-445 Arlington, Texas 76012 50-446 COMANCHE PEAK STEAM ELECTRIC STATION 1981-83 2300 MW INSTALLATION PIPE WALL THICKNESS FILE NO:
10110
Dear Mr. Seidle:
On May 22, 1979, we verbally informed your Mr. R. G. Taylor that pipe wall thickness requirements established in the project piping specifica-tions may not have been adequately conservative to meet ASME code stress requirements. We considered this "potentially" reportable under 10 CFR 50.55(e).
Preliminary meetings have been held to establish a minimum wall thickness examination program on this problem.
The examination will be performed by Southwest Research Institute and will be coordinated by a Brown & Root Coordinating Group. Technical and QA support will be provided by Gibbs &
Hill, TUSI and TUGCO.
The Brown & Root Coordinating Group's procedure for their activities has been issued for review and is currently under revision to address comments.
The Coordinating Group is in the process of determining suspect weld joints.
This activity is over 50% complete.
Southwest Research Institute is in the process o'f completing procedures specifically for this program. We expect to start on-site examination activities by September 20, 1979 and expect this activity to last approx-imately six (6) months.
If you have any further questions, please advise.
Very truly yours, f,
R. J. Gary [
RJG:df cc:
NRC Region IV - (0 + 1 copy)
%6284 Director, Inspection & Enforcement - (15 copies) c/o Distribution Services Branch, DDC, ADM.
U. S. Nuclear Regulatory Commission Washington, D. C.
20555 7 9 0917 0HK A