ML19331D990
| ML19331D990 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 08/08/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Rich Smith VERMONT YANKEE NUCLEAR POWER CORP. |
| Shared Package | |
| ML19331D991 | List: |
| References | |
| NUDOCS 8009040532 | |
| Download: ML19331D990 (3) | |
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- g UNITED STATES
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NUCLEAR REGULATORY COMMISSION O
WASHINGTON, D. C. 20886
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Docket No. 50-271 Mr. Rocert L. Smith Licensing Engineer Vermont Yankee Nuclear Power Corporation 25 Research Drive Westboro, Mas _sachusetts 01581
Dear Mr. Smith:
By letter dated February 23, 90, you were requested to provide informa-tion regarding primary coolant ystem pressure isolation valves.
The objective of this 10 CFR 50.5A letter was to identify those plants which have either or both of t.
valve configurations found in WASH-1400 (Event V) to be significan isk contributors to an intersystem LOCA which results in a core met accident.
We have confirmed that the two specific Event V valve configurations do not exist at your facility. This is based upon the evaluation of your response to our February letter as well as the review of previously docketed information (Enclosure).
Based on this, our activities regarding these valve configurations have been finalized for your f aci lity.
In addition to these Event V valve configurations, we are continuing our efforts to review other configurations located at high pressure /
low pressure system boundaries for their potential risk contribution to an intersystem LOCA which may result in a core melt accident.
Therefore, further activity regarding the brcader topic of intersystem LOCA's may be expected in the future.
Your time and effort in closing out the Event V portion of the inter-system LOCA concern are appreciated.
Sincerely, o, Chief Operating Reactors Branch #2 Division of Licensing Enclosure and ces:
See next page 8000040 S E L
s Mr. Robert 'L. Smith 2-
Enclosure:
Franklin Research Center Technical Evaluation Report, " Primary Coolant System Pressure' Isolation Valves,"
dated July 21,' 1980.
i cc w/o enclosure:
See next page l
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3-Mr. Robert L. Smith cc:
Mr. W. F. Conway John R. Stanton, Director Vice President and Manager Radiation Control Agency of Operations Hazen Drive Vermont Yankee Nuclear Power Concord, New Hampshire 03301 Corporation P. O. Box 157 John W. Stevens Vernon, Vermont 05602 Conservation Society of Southern Vermont Mr. Louis H. Heider, V.P.
P. O. Box 256 Vermont Yankee Nuclear Power Townshend, Vermont 05353 Corooration 25 Research Drive Dr. Mars Longley, Director Westboro, Massachusetts 01581 Occuoational & Radiological Health 10 Baldwin Street John A. Ritscher, Esquire Montpelier. Vermont 05602 Ropes & Gray 226 Franklin Street New England Coalition on Nuclear Boston, Massachusetts 02110 Pollution Hill and Dale Farm Laurie Burt West Hill - Faraway Road Assistant Attorney General Putney,, Vermont 05346 Environmental Protection Division Attorney General's Office Public Service Board One Ashburton Place,19th Floor State of Vermont Boston, Massachusetts 02108 120 State Street Montpelier, Vermont 05602 Ronald J. Wilson 810 18th Street, N. W.
W. P. Murphy, Plant Superintendent Suite 802 Vermont Yankee Nuclear Power Washington, D. C.
20006 Corporation P. O. Box 157 Honorable M. Jerome Diamond Vernon, Vermont 05354 Attorney General State of Vermont David White 109 State Street Co-Director Pavilion Office Building Vermont Public Interest Montpelier, Vermont 05602 Reserach Group, Inc.
26 State Street Mr. J. E. Griffin, President Montoeiler, Vermont 05602 Vermont Yankee Nuclear Power Corooration Vermont Yankee Decommissioning 77 Grove Street Alliance Rutland, Vermont 05701 5 State Street Box 1117 Vermont Yankee Decomnissioning Montpelier, Vermint 05602 Alliance 127 Main Street Brooks Memorial Library Brattleboro, Vermont 05301 224 Main Street Brattleboro, Vermont 05301 o