ML19329B629

Submits Radiological Impact Section Proposed Responses to Agency Comments on Facility Des

ML19329B629
Person / Time
Site:	Davis Besse
Issue date:	08/29/1975
From:	Harold Denton Office of Nuclear Reactor Regulation
To:	Muller D US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8002050745
Download: ML19329B629 (5)

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AUG 2 91975 Daniel R. Muller, Assistant Director for Enviremmental Projects RESPONSES TO AGENCY CODfENTS - DAVIS BESSE 1 DES Plant Nasas Davis Besse Unit 1 Licensing Stage OL Docket Number: 50-346

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Milestone Number: 36-33 Responsible Branch: EPB-1 Project Manager:

H. Thonrpoon Date Raquest Received by RAB: Bluebook Requestad Completion Date:

8/22/75 Description cf Response: Transmittal of Responses to Agency Cocusents Review Statsas: Complete Enclosed are the Radiological Inpact Section's proposed responses to agency cocunents on the Davis-Besse 1 DES.

These coments were prepared by T. Essig, RIS/RAB.

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Harold R. Denton, Assistant Director for Site Safety j

Division of Technical Review

Enclosure:

As stated cc w/o encl:

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2. Soyd W. Mcdonald SS/BC's J. Panzarella ec w/ encl:

S. Hanauer R. Hainaman G. Knighton H. Thompson J. Collins 8 0 02 0 5 0~/49 J. xasta.r E. Conti f -

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s Responses to Agency Comments

' Davis Besse 1 DES 1.

ERDA (p. 5-14)

The valcas of Theapsca, et.al. are concentration factors (not a dose assessment model) and were used in the radiation dose assessment in the DES.

It is our position that the

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Thompson reference contains data which are reasonable values to use in lieu of site-specific data.

2.

HE7 #1 The applicant will be directed to include snapping turtles in the radiological environmental monitoring program under the category " wildlife" in Table 6.4.

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DOI #11 4

Lake bed sediments will be included in the operational monitoring program, because as is indicated in Section 6.3.2 (p. 6-3), "The applicant plans essentially to continue the preoperational program during the operating period."

Table 6.4 '(p. 6-10) furdner indicates that bottom sediment samples will-be included in the program.

The sampling locations include indicator and centrol locations and should be sufficient, in our vieu, to indicate any significant buildup of radioactivity due to plant operation.

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OEP #6 a) We recommend the following respcase to the ec.unent relative to considering how radioactive effluents are i

quantitatively distributed in the environment:

The qu ntitative iistribution of :niionuclides in t' c a

environment has been considered by the Staff and is implicit in all of the radiological impact es timates in Section 5.7.

This distribution is accomplished through the use of hydrologic and atmospheric dilution factors.

1 b).We reco=nend ' the following response to the comment relative to estimating radionuclide concentrations on j

land areas and on vegetation:

1 Estimates of radionuclide concentrations on vegetation I

are implicit in the estimates in Section 5. 7.

Such concentrations are due entirely to radiciodine deposition 4

I since, based on the source term in Table 3.3, radiolodine is the only species which will deposit on vegetation to any extent and will in turn be consumed by animals and i

humans. Dosas from concentrations en land areas of the e

radionuclidea in Table' 3. 3 have been found ca n ;,enerie basis to be too small' to warrant further consideration, l

and hence, hava not been considerad in the. Or/is 32ssa DES.

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We recommend the following response to the comment rel:ttive to the ':uildup of radionuclides in the savir arent:

The buildup of radionuclides in the environment has been considered in the dose estimates in Section 5.7 in that all radionuclides were assumed to be at equilibrium levels in the environment. The dose frem radionuclides in sediment was specifically evaluated (recreational use of shoreline - DES Table 5.2) and was based on the anticipated buildup after 40 years of plant operation.

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OEP #7 (2)

Fish and terrestrial wildlife will be included in the s

radiological environmental monitoring program, as indicated in Table 6.4 (pp. 6-10 and 6-11, respectively).

6.

JLC #5 The NRC Staff (and its predecessor, the AEC) has significantly increased its review effort relative to occupational e::posures since the design of Indian Point-1.

This effort was brought into focus with the publication of Regulatory Guide 3.8, "Information Relevant to Maintaining Occupational Radiation Exposure As Low As Practicable (Nuclear Reactors)." The Staff's review effort has resulted in increased attention by D

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, the nuclear industry t ccupational radiation exposure in

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