ML20040D882
| ML20040D882 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 01/25/1982 |
| From: | Sargent C COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, 3312N, NUDOCS 8202020346 | |
| Download: ML20040D882 (2) | |
Text
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. cN Commonwealth Edison I One First Natiort1 Piaza Chic:go Illincis d
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Address Reply to: Post Office Box 767
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, Chicago, Illinois 60690 Janua ry 25, 1982 4
Mr.. James G.'Keppler, Regional Administrator
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Directorate of Inspection and
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Enforcement - Region III U.S. Nuclear Regulatory Commission
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1982h 799 Roosevelt Road i e n.E,, p}
Glen Ellyn, IL 60137
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Subject:
10 CFR 50.55(e) 30 Day Report #81-RCIC Underground Piping. Final Report NRC Docket Nos. 50-373 and 50-374
Dear Mr. Keppler:
Un December 28, 1981, Commonwealth Edison Comptm notified Mr. Roger Walker of your office of a deficiency with the stainless-steel Reactor Cooling Isolation Cooling (RCIC) underground suction
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and return piping.
That notification was made in accordance with 10 CFR 50.55(e).
This letter fulfills the 30-day reporting requirement of that regulation.
Preservice inspection and a hydrostatic test indicated that a leak was present at the cycled condensate (CY) tank and in the underground portion of the line east of the o ff gas building for the Unit II suction line.
Apparently a schedule mismatch between the fittings and pipe and resulting welding difficulties caused sensiti-zation of the weld heat affected zones.
Although the Unit I lines have successfully passed the required tests, concerns over possible weld cracking of pipe under-ground with resulting leakage causing gr,ound contamination, has led t
to the decision to abandon the lines in Unit I and II.
Replacement pipe and fittings will be of the same schedule (schedule 40),
eliminating the welding problem.
The Unit I lines will be utilized until after the replacement is completed af ter Unit I fuel load.
Baseline ' inspection of the remaining RCIC system and other stainless steel lines have shown that similar problems do not exist in other areas of the piping systems.
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J. G. Keppler Janua ry ~ 2 5, 1982
.The Unit I replacement piping will be completed by July 1982 and the' Unit II replacement piping by fue1L load on Unit' II.
If-there are any further questions in this regard, please-contact'this office.
7 Very truly yours,-
(E5E!
1 C. E.
Sargent Nuclear Licensing Administrator CES/Im cc:
Director of Inspection and 3
Enforcement - Washington, D.C.-
Region III Inspector - LaSalle i
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