ML20037D368
| ML20037D368 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 07/06/1981 |
| From: | Kay J YANKEE ATOMIC ELECTRIC CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| FYR-81-103, NUDOCS 8107100141 | |
| Download: ML20037D368 (2) | |
Text
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YANKEE ATOMIC ELECTRIC COMPANY 2.C.2.1 jh 1671 Wonester Road, fromingham, Massachusetts 01701 FYR 81-103
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f'ky July 6, 1981 g'
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1 United States Nuclear Regulatory Commission
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4' Washington, D. C.
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At ten tion :
Mr. Darrell G. Eisenhut, Director Division of Licensing
References:
(a) License No. DPR-3 (Docket No. 50-29)
(b) YAEC Letter to USNRC dated December 31, 1979 (WYR 79-163)
(c) YAEC Letter to USNRC dated April 9,1980 (WYR 80-43)
(d)
YAEC Letter to USNRC dated December 15, 1980 (WYR 80-136)
(e) YAEC Letter to USNRC dated January 1,1981 (FYR 81-6)
(f) USNRC Letter to YAEC dated April 8,1980 Subject :
Shielding Design Review
Dear Sir:
In References (b) and (c), we provided information detailing our shielding reviews at the Yankee Plant. The results from these reviews identified the potential need for substantial modifications to the plant, thereby necessitating our request to couple our shielding evaluation to the SEP integrated assessment.
We have, however, continued our detailed shielding review independent of the SEP schedule.
Je have conducted detailed reviews of areas containing vital equipment, focusing on required operator actions in response to an emergency s itua tion. These reviews were conducted with the objective of evaluating alternative approaches to substantial shielding modifications by identifying the need for additional local shielding and/or remote operability of required equipment.
Based on these evaluations, it is our conclusion that a viable alternative exists.
This alternative calls for remote operation of required f
equipment from the Control Room to maintain cold shudown conditions for as long as necessary.
Continuous occupancy of the Control Room and the Technical Support Center, is possible because of sufficient shielding, even considering an accident with a fission product release equivalent to the guidelines of TID 14844. A control room habitability study considering radiological rel(ases has been performed and the results presented in Reference (e).
Furthermore, adequa te provisions have been made to ensure logis tical supplies (i.e., food supplies, sanitary f
o 8107100141 810706 PDR ADOCK 05000029 9s D P
U.S. Nuclear Regulatory Commission July 6, 1981 Attention:
Mr. Darrell C. Eisenhut, Director Page 2 facilities, sleeping facilities), will be available for personnel who will be working in the plant af ter a theoretical accident such as this.
In addition, plant staff emergency training includes the plant access arrangements that would be used for high radiation conditions.
Additional work is underway to finalize our conceptual design, and we expect to complete detailed designs within two months. At that time, we will be prepared to meet with your ataff to discuss these plans.
Very truly yours, Y NKEE ATOMIC ELECTRIC COMPANY J. A. Ka y Senior Engineer - Licensing