ML20197H933

Forwards Responses to Two Addl Comments on Des.Page 5-43 Corrected & Table 5.8 Re Radiological Impacts of Accident Clarified

ML20197H933
Person / Time
Site:	Satsop
Issue date:	07/27/1984
From:	Muller D Office of Nuclear Reactor Regulation
To:	Novak T Office of Nuclear Reactor Regulation
References
CON-WNP-1281 NUDOCS 8408080537
Download: ML20197H933 (4)

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Docket tio.: 50-508 AD/RP RF g 37

!!EHORAfiDU!1 FOR: Thomas tiovak, Assistant Director l

i for Licensing Division of Licensing l

FR0il

Daniel R. tiuller, Assistant Director

for Radiation Protection Division of Systems Integration

SUBJECT:

RESP 0tiSES TO ADDITI0tlAL C0lltiEllTS Dti titlP-3 DRAFT EtiVIR0t!!!EllTAL STATEliEilT (DES)

Enclosed are cur responses to two additional coments on the WilP-3 DES:

WPPSS-39 and 50-7.

The responses were written by Pat Easley, Accident Evaluation Branch (AEB) who is the lead AEB reviewer for the titlP-3 FES.

Or%inal signed by Danl*l R.Mul:e(j Daniel R. ituller, Assistant Director

, for Radiation Protection Division of Systems Integration

Enclosure:

As stated cc: B. K. Singh G. lJ. Knighton 08080537 ADOCK 05000508 840727 M h

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. 3 Responses to Coments on t.he WNP-3 DES from the Accident Evaluation Branch WPPSS-39 Page 5-43 has been corrected.

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Tatle 5.7 Su mary of environmental impacts and probabilities P.opulation Cost of exposure, Latent

• offsite t PrcS4Sility Persons Persons Early millions of cancers, mitigating of impact / exposed exposed fatali- person-rems, 80-km/ actions, reactor yr >200 rer.s >25 rer.s ties 80-km/ total total 5 millions 10 4 0 0 0 0/0 0/0 4 10 5 0 3000 0 0.4/1.7 50/140 210 5 x 10 8 0 13,000 0 1.5/5.3 200/470 710

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10.s 1500 110,000 0 5.9/24 750/2000 2,800 10 7 6900 270,000 92 10/30 1700/2800 4,300 10.a 30,000 540,000 340 14/41 1800/4000 4,300 R31ated .L M G G 7  %

Figure. 5. ji 5.? 5. )( 5.X 5.N 5.M aIncludes cancers of all organs. Genetic effects would be approximately twice the number of latent cancers.

. r Note: Please refer to Section 5.9.4.5(7) for a discussion of uncertainties in risk estimates.

Figure 5.5 shows the probability distribution for the total population exposure I in person rems; that is, the probability per reactor year that the total popu- l Iction exposure will equal or exceed the values given. Most of the population  ;

exposure up to 400,000 person-rems would occur within 80 km (50 miles), but the more severe releases (as in the first two r.elease categories in Table 5.6) ,

would result in exposure to persons beyond the 80-km range as shown. ~

32 oco For perspective, population doses stown in Figure 5.5 may be compared with the  !

anneal average dose to the populaticn within 80 km of the WNP-3 site resulting ,

frcs natural background ' radiation of M. person-rems, and to the anticipated )

annual population dose to the general public (total U.S.) from normal plant  :

operation of 56 person-rems (excluding plant workers) (Appendix 0, Tables 0-7 and D-9).

Figure 5.6 shows the probability distributions for early fatalities, represent- g ing radiation injuries, that would produce fatalities within about 1 year af ter exposure. All of the early fatalities would be expected to oc ur within a 28-)( Nm '

(18-mile) radius and the majority within a 6.4-km (4-mile) radius. The results of the calculations shown in this figure and in Table 5.7 reflect the effect of cvacuation within the 16-km (10-mile) plume exposure pathway zone. Figure F.1  !

c WNP-3 DES 5-43

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SD-7 It is not clear which impacts are referred to. With respect to the non-radiological impacts of postulated accidents, the " direct" impacts are generally of a different nature than " indirect" impacts, so a

" cumulative" impact would not be meaningful. With respect to the radiological impacts of accidents, the impacts summarized in Table 5.8 include dose risks from both early exposures and long-term exposures.

Some of the'latter are " indirect" in that the doses are from the food chain pathway. The radiological impacts shown in Table 5.8 are, therefore, cumulative. Those impacts that were not discussed were judged to be of less importance than the impacts discussed.

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NUCLEAR REGULATORY COMMISSION C W ASHING T ON. D. C. 20S55 ge%d

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%, ...../ SEP 2 71984 Docket No. 50-508 MEMORANDUM FOR: George Knighton, Chief Licensing Branch No. 3 Division of Licensing FROM: William H. Regan, Jr. , Chief -

Site Analysis Branch Division of Engineering

SUBJECT:

WNP-3 FES INPUT ,

Plant Name: WNP-3 Docket No.: 50-508 Licensing Stage: 0L Responsible Branch: LB #3, B.K. Singh, LPM SAB Reviewer: Al Brauner

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Requested Completion Date: ASAP Review Status: Revisions Completed Enclosed is a revision of the WNP-3 DES Table 4.7 that is to be incorporated in the WNP-3 FES. This revision is the result of updated population data received from the applicant in ER-OL Amendment 2, dated May, 1984.

Additional changes to be made involve rewording the following .section as indicated.

Section 4.2.2 (2nd paragraph'- discussed with G. LaRoche, EHEB)

The minimum distance to the exclusion area boundary, shown in Figure 4.1, is 1310m (4300 feet) measured from the center of the WNP-3 reactor contair. ment building. The exclusion area lies completely within the fee-owned and easement rights property, s

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George Knighton Page 2 Section 5.9.4.4(2) (1st sentence, 2nd paragraph)

First, the site has an exclusion area, as re with a minimum distance of 1310m (4300 feet) quired by measured 10the from CFR 100, center of the WNP-3 reactor containment building.

William H. Regan, Jr., Chief Site Analysis Branch Division of Engineering

Enclosure:

As stated cc: B. K. Singh A. Thomas G. LaRoche DISTRIBUTION:

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