ML20005G061

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Discusses Natl Research Council Committee on Biological Effects of Ionizing Radiation V Rept.Rept Consistent W/ Testimony Presented by Licensee & NRC in Proceeding & W/ Board Decision LBP-89-07.Svc List Encl
ML20005G061
Person / Time
Site: Crane Constellation icon.png
Issue date: 01/03/1990
From: Baxter T
GENERAL PUBLIC UTILITIES CORP., SHAW, PITTMAN, POTTS & TROWBRIDGE
To: Kohl C, Moore T, Wilber H
NRC ATOMIC SAFETY & LICENSING APPEAL PANEL (ASLAP)
References
CON-#190-9650 LBP-89-07, OLA, NUDOCS 9001180068
Download: ML20005G061 (5)
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(202) 663-8090-January 3, 1990 Thomas S. Moore, Esquire Christine N. Kohl, Esquire Atomic Safety and Licensing Atomic Safety and Licensing Appeal Panel Appeal Panel U.S.

Nuclear Regulatory U. S. Nuclear Regulatory Commission Commission Washington,.D.C.

20555 Washington, D.C.

20555 Mr. Howard A. Wilber Atomic Safety and Licensing Appeal Panel U.S. Nuclear Regulatory p

Commission Washington, D.C.

20555 i

l In the Matter of GPU Nuclear Corporation (Three Mile Island Nuclear Station, Unit 2)

Docket No. 50-320-OLA (Disposal of Accident-Generated Water)

Administrative Judges Moore, Kohl and Wilber:

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1' This letter is written to apprise you of the issuance of the report of the National Research Council's Committee on the Bio-logical Effects of Ionizing Radiation -- the BEIR V Report.

The conclusions in this report are consistent with the testimony pre-l sented by GPUN's witnesses and the NRC's witnesses in the Accident-Generated Water proceeding, and with the Atomic Safety 1

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. SHAw, PITTM AN, POTT 5 6. TROWBRIDGE A DARTNgeSmp 8NCWDiNG PROFESS @NA. ConSchATCNS Atomic Safety and Licensing Appeal Board January 3, 1990 Page Two 1

and Licensing Board's decision, LBP-89-7, 29 N.R.C. 138 (1989).

For your convenience, the pertinent portions of the record below, and the implications of the BEIR V Report, are very briefly sum-marized.

This letter and summary are provided simply to inform

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you of the new development-and its' lack-of effect on the decision under review.

No adjudicatory consideration of this information is necessary.

In the Accident-Generated Water proceeding, GPUN's witness Dr. Fabrikant (a member of the BEIR V-Committee) testified that the United Nations' Scientific Committee on the Effects of Atomic Radiation (UNSCEAR 1988) and the BEIR V Committee were reevaluat-ing radiation-associated cancer risk estimates, taking into account the new DS86 dosimetry for Nagasaki and Hiroshima.

At the time, UNSCEAR was just completing its reevaluation, while the BEIR~V Report was expected later.

Tr. 1297-98.

For high dose, high dose rate radiationg4UNSCEAR 1988 arrived-at lifetime cancer risks of 4.5 x 10 per rem using an 4

absolute model and 7 x 10 per rem using a relative model.

UNSCEAR 1988 also recognized that cancer risks at low doses and low dose rates would be lens due to a dose. rate effectiveness factor (DREF) of between 2 and.10, as reported in NCRP Report 64.

Thus, with a DREF of 2, UNSC{AR's 1988 results corresponded to

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risk estigates of 2.25 x 10 per rem (absolute method) and 3.5 x 10 per rem (relstive method) for low dose, low' dose rate exposures.

The high end of these estimates is less than a factgr of 2 greater than previous upper-bound estimates (e.g.,

2 x 10 per. rem).

Id.

Dr. Fabrikant further demonstrated that even if risk esti-mates are increased by a factor of 2, the evaporation of AGW would still be deemed insignificant.

Tr. Igl5.

The NRC Staff actually applied a risk estimate of 4 x 10-per rem in its tes-timony and also concluded that the risks from evaporation were insignificant.

Tr. 616.

This testimony is reflected in the Licensing Board's decision, 29 N.R.C.

at 172, 174-75.

The BEIR V Report arrives at a lifetime cancer mortality 4

risk estimate of about 8 x 10 per rem based on exposure to high dose, high dose rate (instantaneous) radiation and using a rela-tive risk model.

The BEIR V Report states, "For low LET radia-tion, accumulation of the same dose over weeks or months is l

expected to reduce the lifetime risk appreciably, possibly by a l

factor of 2 or more."

BEIR V summarizes DREFs that have been E

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SH Aw,.PITTM AN. POTTS & TRCWBRIDGE

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a Atomic _ Safety and Licensing i

Appeal Board i

January 3, 1990 Page Three l

observed ranging from 2 to 10.

Acce,idingly, for low dose, low dose rate exposure, the BEIR V Report indicates an upper-limit

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-lifetime cancer mortality risk estimate of 4 x 10 per rem.

r-In summary, the BEIR V Report bears out the testimony pre-sented by GPUN and by the NRC Staff, and the Licensing Board's findings.

While a ner development, the issuance of the BEIR V Report does not change the testimony or findi'ngs and need_not be considered further..

Sincerely, N.

Thomas A.

Baxter Counsel for Licensee TAB:jah-cc:

Service List attached L:07E M 5413.89 l-1 i

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING APPEAL BOARD In the Matter of

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GPU NUCLEAR CORPORATION

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Docket No. 50-320-OLA

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(Disposal of Accident-1

-(Three Mile Island Nuclear

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Generated Water)

Station, Unit 2)

)

SERVICE LIST Thomas S. Moore, Esquire Dr. Oscar H. Paris Atomic Safety and Licensing Atomic Safety and Licensing Appeal Panel Board Panel U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, D.C.

20555 Washington, D.C. 20555 Stephen H. Lewis, Esquire Christine N. Kohl, Esquire Colleen P. Woodhead, Esquire Atomic Safety and Licensing Office of the General Counsel Appeal Panel U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Washington, D.C.

20555 Commission Washington, D.C.

20555 Docketing and Services Branch Secretary of the Commission Mr. Howard A. Wilber U.S. Nuclear Regulatory Commission

-Atomic Safety and Licensing Washington, D.C.

20555 Appeal Panel U.S. Nuclear Regulatory Adjudicatory File Commission Atomic Safety and Licensing Board Washington, D.C.

20555 Panel Docket U.S. Nuclear Regulatory Commission Peter.B. Bloch, Esquire Washington, D.C. 20555 Atomic Safety and Licensing Board Panel Richard P. Mather, Esquire U.S. Nuclear Regulatory Department of Environmental Commission Resources Washington, D.C. 20555 Commonwealth of Pennsylvania 505 Executive House Mr. Glenn O. Bright Harrisburg, Pennsylvania 17120 Atomic Safety and Licensing Board Panel Ms. Frances Skolnick U.S. Nuclear Regulatory 2079 New Danville Pike Commission Lancaster, Pennsylvania 17603 Washington, D.C. 20555

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Ms.-;Vera L. Stuchinski.

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-315'Peffer= Street.

Harrisburg,. Pennsylvania 17102

n Mr.. Lee H. Thonus U.S. Nuclear Regulatory Commission P.O. Box,311 Middletown, Pennsylvania 17057'

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