ML19209C038
| ML19209C038 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 10/09/1979 |
| From: | Vandenburgh D YANKEE ATOMIC ELECTRIC CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19209C039 | List: |
| References | |
| TASK-07-04, TASK-7-4, TASK-RR WYR-79-145, NUDOCS 7910110426 | |
| Download: ML19209C038 (2) | |
Text
Telephone 617 366-9011 710-390-0739 YANKEE ATOMIC ELECTRIC COMPANY ea.2.1 WYR 79-145
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20 Turnpoke Road Westborough, Massachusetts 01581 es s
t October 9, 1979 United States Nuclear Regulatory Commission Washington, D.C.
20555 Attention:
Office of Nuclear Retetor Regulation Mr. Harold R. Denton, Director Re ferences:
(a) License No. DPR-3 (Docket 50-2 9)
(b) USNRC Letter to all light water reactors dated September 17, 1979 (c) USNRC/IE letter to YAEC dated September 14, 1979
Dear Sir:
Subject:
Potential Unreviewed Safety Question Regarding Safety Function Interactions with Non-Safety Grade Systems This letter responds to your letter, Reference (b), regarding the above subject, which was initially detailed in Reference (c).
Yankee has completed an investigation of the systems specifically identified in Reference (c). We have not identified an environmentally induced failure which would alter the conclusions of the operating license.
A description of our investigation which includes an identification of possible interactions between non-safety grade and safety grade systems, and their impacts on the safety analyses are presented in the enclosure entitled:
" Report on Failure Effects of Equipment Not Qualified for Accident Related Environments".
Much of the safety analyses contained in more recent LWR license applications did not exist when Yankee was issued an operating license.
However, Yankee has taken additional steps to ensure that the concerns expressed in Reference (c), which are well beyond those events considered or analyzed during the Yankee licensing process, have been addressed as part of our continuing obligation to ensure the health and safety of the public.
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United States Nuclear Regulatory Commission Page 2 Mr. Harold R. Denton, Director October 9, 1979
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As noted in the enclosed report Yankee is continuing its efforts in this matter, which we identify as Phase II.
'/e believe that this work will constitute a long term commitment, and recommend it be incorporated into the existing SEP program, as a long term consequence of lessons learned from the TMI accident.
We believe the information and commitment presented herein are responsive to your request. We are concerned at the prominence given this matter when industry resources are being severely taxed to respond to similar matters already under consideration as detailed in NUREG-0578.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY
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D. E. Vandenburgh Senior Vice President RHG/nj COMMONWEALTH OF MASSACHUSETTS C0JNTY OF WORCESTER Then personally appeared before me this the 9th day of October, 1979, D. E. Vandenburgh, who, being duly sworn, did state that he is a Senior Vice President of Yankee Atomic Electric Company, that he is duly authorized to file, execute and sign the foregoing request in the name and on the behalf of Yankee Atomic Electric Company, and that the statements therein are true to the best of his knowledge and belief.
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My Commission Expires September 14, 1984 Robert H. Groce Notary Public
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