ML20023C212
| ML20023C212 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 05/02/1983 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Garrity J Maine Yankee |
| References | |
| NUDOCS 8305160201 | |
| Download: ML20023C212 (3) | |
Text
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yyg p plS-ol(O Docket No. 50-309 Mr. John H. Garrity. Senior Director Nuclear Engineering and Licensing Maine Yankee Atomic Power Company 83 Edison Drive-Augusta Maine 04336
Dear Mr. Garrity:
SUBJECT:
PROPOSED TECHNICAL SPECIFICATION ON PURGE AND VENT SYSTEM OPERATION.
We have reviewed the Technical Specification (T.S.) changes proposed by your letter dated October 7,1982 related to the operation of the purge and vent system.
The T. S. change proposal reviewed by the staff pertains to the periodic leak test interval of the purge and vent valves.
In our letter dated May 21, 1982 the staff recommended a 3-month test interval for the Maine Yankee purge valves, since the valves are used during normal operation.
You proposed instead to leak test these valves after each use of the purge system. Since the purge system is normally used only when the plant is being shutdown for refueling or repairs, the interval between tests would most likely be greater than 3 months. You also stated that the continuous leak rate system, used to monitor containment leakage during normal operation, would provide additional assurance that the purge valve i
resilient seats are not excessively degraded. However, the lower pres-sure (3 psig) used to monitor containment leakage may not be sufficient to detect seat deterioration that could cause excessive leakage at the
'i high pressure associated with a LOCA.
Therefore, we find your proposed leak test interval to be unacceptable.
Alternatively, the staff would find acceptable a test program whereby the purge valves would be leak tested after each use of the purge system, with a maximum interval of 6 months between leak tests. This approach would be acceptable to the staff because the purge valves are used in-frequently and could be considered to be in a,cassive state between purge operations. Therefore, the 6-month tan interval for passive valves, with the added provision that the valves be leak tested after each use, is an acceptable compromise to the 3-month test interval for active valves.
If you accept our alternative proposal, we will find technical specifications reflecting this change concerning the purge system operation to be acceptable.
8305160201 830502 PDR ADOCK 05000309 P
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l Mr. John H. Garrity Please indicate your position on our alternative proposal to the staff within sixty days of your receipt of this letter.
Sincerely.
Original signed by:
Robert A. Clark. Chief Operating Reactors Branch #3 Division of Licensing cc: See next page DI TRIBUTION ocket File Local PDR ORB #3 Rdg D.Eisenhut JHeltemes RAClark PKreutzer (3)
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Maine Yankee Atomic Power Company cc:
E. W. Thurlow, President Mr. Robert H. Groce Maine Yankee Atomic Power Company Senior Engineer - Licensing Edison Drive Maine Yankee Atomic Power Company Augusta, Maine 04336 1671 Worcester Road Framingham, Massachusetts 01701 Mr. Donald E. Vandenburgh Vice President - Engineering U. S. Environmental Protection Agency Yankee Atomic Electric Company Region I Office 1671 Worcester Road ATTN:
Reg. Radiation Representative Framingham, Massachusetts 01701 JFK Federal Building Boston, Massachusetts 02203 John A. Ritsher, Esq.
Ropes & Gray 225 Franklin Street Boston, Massachusetts 02110 State Planning Officer Executive Department 189 State Street Augusta, Maine 04330 Mr. E. C. Wood, Plant Manager Maine Yankee Atomic Power Company P. O. Box 3270 Wiscasset, Maine 04578 Regional Administrator U. S. Nuclear Regula~ tory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 First Selectman of Wiscasset Municipal Building U. S. Route 1
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Wiscasset, Maine 04578 Mr. Paul Swetland Resident Inspector c/o U. S. Nuclear Regulatory Commission P. O. Box E Wiscisset, Maine 04578 Mr. Charles B. Brinkman Manager - Washington Nuclear Operations Combustion Engineering, Inc.
7910 Woodmont Avenue Bethesda,. Maryland 20814
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