ML19323B699
| ML19323B699 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities, Zion  |
| Issue date: | 04/01/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Peoples D COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML19323B700 | List: |
| References | |
| NUDOCS 8005140096 | |
| Download: ML19323B699 (2) | |
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UNITED STATES
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g NUCLEAR REGULATORY COMMISSION 8095140 jfg g
g WASHINGTON, D. C. 20555
,4, April 1, 1980
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Docket Nos. 50-265 50-295 and 50-304 Mr. D. Louis Peoples Director of Nuclear Liconsing Comonwealth Edison Company P. O. Box 767 Chicago, Illinois 60690
Dear Mr. Peoples:
By letter dated August 14, 1978, we informed you that atypical weld wire material may have been used in certain reactor pressure vessels fabricated by Babcock and Wilcox Company. Among those were the Quad Cities Unit 2 and Zion Unit 1 and Unit 2 reactor vessels. We requested that you eval-uate your own cases and administratively apply such pressure-temperature heatup and cooldown limits as may be appropriate.
By letter dated August 18, 1978, you confirmed that such limits had been found appropriate and would be applied.
By letter dated March 1,1979, we advised you that further investigation had confirmed the improbability that such material had been used in your reactor vessels, but that continued application of the interim limits is appropriate until the matter is finally resolved.
This is to inform you that our review and evaluation of the matter has been conpleted. We conclude that the probability that atypical weld wire was used in the reactor vessels for Quad Cities Unit 2 or Zion Units 1 and 2 is very low. We find that the present Technical Specifications on reactor vessel pressure-temperature limits for these > nits provide a sufficient margin of safety, and that the administrative operating limits may be removed.
Our Safety Evaluation is enclosed.
Sincerely,
~
'J p Thoma
. Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
Enclosure:
Safety Evaluation CC W/ enclosures:
See next page
t Mr. D. Louis Peoples Commonwealth Edison Company cc:
Mr. D. R. Stichnoth Dr. Ceci! Lue-Hing President Director of Research and Development Iowa-Illinois Gas and Metropolitan Sanitary District Electric Company of Gre:J.cc Chicago 206 East Second Avenue 100 East Erie Street Davenport, Iowa 52801 Chicago, Illinois 60611 Mr. John W. Rowe Zion-Benton Public Library District Isham, Lincoln & Beale 2600 Emmm 3 Avenue Counselors at Law Zion, Illinois 60099 One First National Plaza, 42nd Floor Chicago, Illinois 60603 Mr. Phfilip P. Steptoe Isham, Lincoln and Beale Mr. Nick Kallvianakas Counselors at Law Plant Superintendent One First National Plaza Quad Cities Nuclear Power Station 42nd Floor 22710 - 206th Avenue - North Chicago, Illinois 60603 Cordova, Illinois 61242 Robert J. Vollen, Esquire 109 North Dearborn Street Chicago, Illinois 60602 Moline Public Library 504 - 17th Street Moline, Illinois 61265 Susan N. Sekuler Assistant Attorney General Environmental Control Division 188 W. Randolph Street Suite 2315 Chicago, Illinois 60601 Mr. N. Chrissotimos, Inspector US Nuclear Regulatory Commission Box 756 Bettendorf, Iowa 52722 l
Resident Inspector Zion Nuclear Station l
U. S. Nuclear Regulatory Commission l
Post Office Box 374 Deerfield, Illinois 60015