ML20215M227

Forwards Comments on Draft Suppl 2 to Programmatic EIS for Disposal of Radioactively Contaminated Water Stored at TMI Nuclear Station Site

ML20215M227
Person / Time
Site:	Three Mile Island
Issue date:	01/27/1987
From:	Tokuhata G PENNSYLVANIA, COMMONWEALTH OF
To:	Travers W Office of Nuclear Reactor Regulation
Shared Package
ML20215L984	List: ML20215M111 ML20215M129 ML20215M161 ML20215M188 ML20215M210 ML20215M227 ML20215M236 ML20215M264 ML20215M273 ML20215M287 ML20215M389 ML20215M422 ML20215M475 ML20215M495 ML20215M498 ML20215M505 ML20215M514
References
NUDOCS 8705130132
Download: ML20215M227 (4)

Text

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Januari 27, ' 9V Dr. William D. Travers Director TMI-2 Cleanup Project Directorate Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Dr. Travers:

Thank you for sending to my office your Draft Supplement 2 to the Programmatic Environmental Impact Statement for disposal of radio-actively contaminated water stored at the TMI nuclear station site.

As requested, I have review the draft document and provided a brief comment. This supplemental PEIS appears to be very thorough and well thought out. Please feel free to contact my office again regarding this and any other related matter.

Sincerely, George K.

s okuha a Dr.P.H., Ph.D.

Directo Division of Epidemiology Research Attachment 8705130132 DR 870507 ADOCK 05000320 PDR P O Box 90. H AR RISBURG P A 17108 l

DEAFT .SUDPLEMENT 2 TO THE PROGRAMMA IC ENVIRONME:. A'-

IMPACT' STATEMENT - THREE MILE ISLANL, UNIT 2 Conmer.t.By Gecrge L Tokanata, Dr.P.H., Pb'.0. i Director Division of Epidemiology Research Pennsylvania Department of Health My comments as an epideriologist are confined to the realm of epidemicic;y, particular in those areas where potential health impacts exist. I am particularly interested in an estimate of the possible health effects resulting from radiation doses to the maximally exposed individual offsite, the general population, and the workers. Also there is a need to consider radio-logical health impacts resulting from spills and nonradiological impacts resulting from traffic accidents, injuries, and fatalities.

For all evaluated alternatives, the 50-year dose commitment to the maximally 1

exposed individual dose ranges from 0 to 3 mrem to the bone and 0.00 to 0.53

• mrem to the total body. These radiation doses are in addition to the approximately 87 mrem / year received by the average Harrisburg resident from natural background.

The population dose ranges from 0 to 11 person-rem to the bone and from 0 to 3 person-rem to the total body. The population doses from the atmospheric releases from onsite evaporation or solidification processes at TMI are distributed to a population of 2.2 million persons in the vicinity of TMI. The population also receives an annual background radiation dose of approximately 190,000 pe rs on- rem. Annually, 300,000 people will receive 26,000 person-rem from background sources,

30.Ar SUPPLEMENT I TO THE PROGF.AMMAT:C EN',':P.DNME*,T AL IMPAC ST ATEv.ENT - TMEE MILE ISLA'J , UN1 2

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Occupat'onal d:se esticates for all evabated alternatives range fro.~. :.E-::

25 perscn-rem. Essentially _all of the external occupational doses rece',e:

for all scer.arios are due.to other sources in the vicinity of the woriers, not the accident-generated water.

In estimating potential health ef fects from both offsite anc occupational radiation exposures as a result of the disposal of the accident-generated water, the staff used can:er and genetic risk estimators that are based on information compiled by the National Academy of Sciences Advisory Committe on the Biological Effects of Ionizing Radiation. The estimates cf the risks to workers and the general public are based on conservative assumptions.

The risk of potentially fatal cancers in the exposed work-force population is estimated to be 0.003, i.e., the probability of one cancer death over the lifetime of the entire work force as a result of the disposal operation is about 3 chances in 1,000.

The risk of potential premature death from cancer to the average individual within 50 miles of the reactors from exposure to radioactive effluents from the disposal operation is much less than the risk to the maximally exposed individual. The staff estimates that less than 0.001 cancer deaths may occur l

I in the exposed population. The staff also estimates that about 0.002 potential genetic disorders may occur in all future generations of the exposed population.

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DRAFT SUDPLEMENT 2 TO THE PROGRAv.MA'IC E: V1;0!.E'.' AL IMPACT STATEMEN' TdREE MIL E ISLANC, U'.;' 2

( CO'. * ! )

Based cn updated infc ,ation in this draft supplement, the staff concl. des that the risks to the cer.eral putlic from exposure t: radioactive eff'.'e-::

i froc an,. a'ternative are very small fraction of the estimated normal incider.ce of car.cer fatalities and genetic disorders. This conclusi:r :s valic. I also concur that the most significant potential impact associate:

with any disposal alternative is the risk of physical injury associated witt transportation accidents (0.03 to 0.80 traffic fatalities).

January 21, 1987 l

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