ML20198F517

Forwards Site Analysis Branch Comments on Des.Meteorology Info Discussed

ML20198F517
Person / Time
Site:	Satsop
Issue date:	05/05/1975
From:	Harold Denton Office of Nuclear Reactor Regulation
To:	Muller D Office of Nuclear Reactor Regulation
References
CON-WNP-1248 NUDOCS 8605280530
Download: ML20198F517 (2)

Text

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DISTRIBUTION:

Docket File l'!^f 5 1975 .

NRR-RDG .

SAB D. R. Muller, Ameistant Director foe Environmental Projects RL

' RESPONSE TO ACENCY ColttENIS ON DES - METEORCLOGY PIANT NAME: WPPSS NUCLEAR PROJECT NO. 3 - UNITS 3 & 5 LICENSING STACE: CP DOCKET NUMBERSs 50-508 & 50-539 RESPONSIBLE BRANCH: EP-4 ILM. UESTED COMFLETION DATE: Anril 28, 1973 Enclosed are responras by the Meteorology Section, SAB to the U.S.

Environmental Protection Ar,ency coswients concenting the Draft Environmental Statesent for the tiPPSS Nt: clear Project "o. 3- Uutta 3 and 5.

These responses were prepared by R. Kornamiewicz and E. H. Markee, Jr.,

Site Analysis Branch. TR.

W Signed by it. R. Onten

3. C. Denton, Assistant Director for Site Safety Division of Technical Review Office of Nuclear Reactor Regulation

Enclosure:

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RESPONSE TO AGENCY CO>CE.NTS ON DES WASHINGTON PU3LIC POWER SUPPLY SYSTE>I

!.~JCLEAR PROJECI 50. 3 - UNITS 3 & 5 o DOCKET N Q3ERS 50-503 & 50-50?

MEIECROLOGY The following co=:ent concerning meteorology was included under Additional Co==ents in the U. S. Environ = ental Protection Agency's review of the Draf t Environ: ental Statement for the Washington Public Power Supply Systea (W?PSS) Nuclear Project 3 - Units 3 & 5:

" Regulatory Guide 23 on onsite ceteorological programs reco== ends that the probability distribution of X/Q esticates be presented for critical time periods. However, this is not presented for the Environmental State:ent, and only the 50 percentile X/Q values are included in the Environnental Raport (Chapter 7, Table 7.1.1) . In addition, the guide also reco= sends that meteorological data recovery should be at least 90%. However, no value is presented in either the draf t environ-mental statecent or in the environmental report. This information on meteorological data should be presented in the final statement."

In response to the first part of the co==ent; alchough Regulatory Guide 1.23 (for:erly Safety Guide 23) does contain a state =ent con-cerning probability distributions of X/Q estimates for various' time periods, it is in reference to Regulatory Guides 1.3 and 1.4 which are concerned with design basis loss of coolant accident evaluations for Botling Water and Pressurized Water Reactors, respectively. These analyses, including the X/Q values used, are not appropriate for the environmental accident assess =ent in Chapter 7 of the Environmental Statement, but are presented in the Safety Evaluation Report for the plant. This report, prepared by the Nuclear Regulatory Commission staf f, is also available to the public. Regulatory Guide 4.2. Revision 1 -

Chapter 7 Preparation of Environmental Reports for Nuclear Power Stations, offers guidance to the applicant as to the appropriate X/Q f values to be used in the assessment of the environmental icpact of plant accidents.

The staff agrees with the EPA concerning the irclusion of the information

.on the joint data recovery rate. The recovery rate of the data used

• in the evaluation, during the one year period May 1973 - April 1974, was 96%. This information will be included in the final Environnental Statement.

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