ML19289C219
| ML19289C219 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 11/30/1978 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Groce R YANKEE ATOMIC ELECTRIC CO. |
| References | |
| NUDOCS 7812140383 | |
| Download: ML19289C219 (2) | |
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November 30, 1978 Docket No. 50-309 Mr. Robert H. Grece Licensing Engineer Yankee Atomic Electric Company 20 Turnpike Road Westboro, Massachusetts 01581
Dear Mr. Groce:
By letter dated March 18, 1977, you provided a detailed evaluation of the potential consequences of a postulated fuel handling accident inside the containment at the Maine Yankee plant. We have reviewed your analysis and have detennined that the assumptions used for the analysis are comparable with the guidance of Regulatory Guide 1.25 and justified by the quality of the equipment on which you rely. For us to conclude that the potential consequences of this postulated accident are appropriately within the guidelines of 10 CFR Part 100 (i.e., less than 100 rem thyroid), we must use ycur assumption that the containment can be isolated before any radioactivity from the damaged fuel assembly can be released to the e1vironment.
In your letter, you stated that the time to close the containment purge valves was approximately 2 seconds and that all personnel and equipment hatches leading from the containment could be closed imediately. Neither of these statements are based on limits in the Maine Yankee Technical Specifications. We consider it appro-priate to have these limitations identified in the Technical Specifi-ca tions. Therefore, we request that you propose, within 60 days of the date of this letter, specifications which provide adequate assurance that the containment purge valves and all hatches leading from containment are closed before any radioactivity is released to the environment. These would be required for at least 110 hours0.00127 days <br />0.0306 hours <br />1.818783e-4 weeks <br />4.1855e-5 months <br /> following shutdown.
Sincerely, l
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k Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors cc: See next page 7812140.373
Yankee Atomic Electric Company CC:
E. W. Thurlow, President Mr. Robert R. Radcliffe Maine Yankee Atomic Power Company Office of Energy Resources 9 Green Street 55 Capitol Street Augusta, Maine 04330 Augusta, Maine 04330 Mr. Donald E. Vandenburgh Vice President - Engineering Yankee Atonic Electric Company 20 Turnpike Road Westboro, Massachusetts 01581 1
John A. Ritsher, Esquire Ropes and Gray 225 Franklin Street Boston, Massachusetts 02110 Mr. John M. R. Paterson Assistant Attorney General State of liaine Augusta, Maine 04330 Harold P. Green, Esquire Suite 1000 The Watergate 600 New Hampshire Avenue, N.W.
Washington, D.C.
20037 Mr. Nicholas Barth Executive Director Sheepscot Valley Conservation Association, Inc.
P. O. Box 125 Alna, Maine 04535 Wiscasset Public Library Association High Street Wiscasset, Maine 04578 Mrs. L. Patricia Doyle, President SAFE POWER FOR MAINE Post Office Box 774 Camden, Maine 04843 v
.