ML19210C356
| ML19210C356 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee, Crane |
| Issue date: | 10/30/1979 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Nixon W AFFILIATION NOT ASSIGNED |
| References | |
| NUDOCS 7911140128 | |
| Download: ML19210C356 (2) | |
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UNITED STATES y[
- j NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555
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Octo'>er 30, 1979
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e Mr. William A. Nixon, III RFD #2 P. O. Box 277A Norridgewock, ME 04957
Dear Mr. Nixon:
I am very sorry that you received a form response to your letter of April 17, 1979.
With regard to the Maine Yankee Atomic Power Station, it is designed to withstand earthquakes of intensity appreciably greater than the nenhable maximten at the site based on the seismic history of the area.
The ecrthquake that was centered about six miles from the plant in April 1979 caused no damage to the plant. All n.ajor structures in-ciuding the reactor building and the auxiliary building are founded on bedrock and are adequate to support all imposed loadings. As to flooding, Maine Yankee nas been designed against surges and waves caused by the probable maximum hurricane and is well above the highest tide observed in the area. With respect to sabotage, Maine Yankee meets NRC requirements for a physical protection system and security organization to provide protection with high assurance against success-ful industrial sabotage from inside or outside of the plant.
With regard to your question about Harrisburg, Pennsylvania, it would be safe for your mother to live there.
The NRC has instruments to measure the radiation dose at 47 locations around Three Mile Island.
These indicate that there is no danger from radiation.
Even during the ten days following the Three Mile Island accident, technical staff members of the DeparLaent of Health, Education and Welf are, the Environmental Protection Agency, and the Nuclear Regulatory Commission concluded that there were minimal risks (that is, a very small number) of additional health effects to the offsite population.
Their study, a copy of which is enclosed, detemined that the maximum cumulative dose that might have been received by an individual 0.5 miles east northeast of the site was 83 mrem, a dose that is less than that re-ceived in a year (more than 100 mrem) from natural background radiation by 1326 026' G
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Mr. William A. Nixon, III October 30, 1979 everyone. The collective exposure received by all, people living within 50 miles of the plant was estimated to be 3300 person-rem, leading to an estimate of one potential excess cancer in that population over their remaining lifetimes, compared to 325,000 expected cancers due to other causes in the lifetimes of those same people.
Sincerely, f
Harold R. Denton, Director Office of Nuclear Reactor Regulation
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) ?:s Mr. Willi a A. Nixen, III N [W /N j W[
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Dear Mr Nixon:
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Your recent letter to President Carter concerning the accident at Three Mile j
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Island Nuclear Station, Unit 2 expressing your views on nuclear power was i)(' referredgthis acency for rw We appreciate your concerns and assure /, thel d 0
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you that every effort is being made to ensure the continued protection or "pd j
health and safety of the public not only at the Three Mile Island Nuclear N 0 N. d i
4 Station, but also at all nuclear power plants.
We have taken or are taking a number of actions with respect to all nuclear [
power plants as a result of the Three Mile Island accident.
Specifically, 7,
full-time inspectors have been assigned to each operating plant utilizing M pC, Babcock & Wilcox pressurized water reactors like those at Three Mile Island.
'a addition,,.the licensees of all these plants which were not already shutdo n have voluntarily shut down their plants.
We have issued confirmatory orders /
i to the licensees of all Babcock & Wilcox reactors like those at Three Mile g' 64 Island to assure that necessary plant modifications, additional training and revised operatinn procedures will be effected prior to resuming operati nhruM ' -[-[/C')
Licensees of all operating plants utilizing pressurized water reactors hava been instructed to take specific actions with regard to the status of certain ( gN Licensees /
equipment, plant procedures, operator actions and facility designs.
of all cperating plants, including those utilizing boiling water reactors,hav their facilities in light of the Three Mile Island accident.
In addition,,6 substantial effort is being expended within this agency to evaluate the Ng',f[
factors which contributed to the Three Mile Island accident and to prevent a y
similar occurrence in the future.
We will carefully review all the information obtained and developed as a result of the Three Mile Island accident and take whatever further action is
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deemed appropriate.
e Sincerely, b
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% 'dT100 200b5-9 Harold R. Denton, 9irect Office of Nuclear Reacto ulation o
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