ML20010C097

Forwards Request for Addl Info for Review of Site Seismology.Response Due by 811001

ML20010C097
Person / Time
Site:	Wolf Creek
Issue date:	08/07/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Koester G KANSAS GAS & ELECTRIC CO.
References
NUDOCS 8108190116
Download: ML20010C097 (4)

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DEisenhut TERA BJYoungblood NRC/PDR Docket No.: STH 60-482 RLTedesco L/PDR GEdison NSIC MRushbrook TIC Mr. Glenn L. Koester SHanauer ACRS (16)

Vice President - Nuclear RVollmer Kansas Gas and Electric Company Tilurley 201 North Market Street RMattson Wichita, Kansas 67201 RHartfield, MPA OELD

Dear Mr. Koester:

OIE (3)

Subject:

Request for Additional Infomation for the Review of the Wolf Creek Plant, Unit 1 Regarding Seismology As a result of our continuing review of the Wolf Creek Plant, Unit 1 FSAR, we find that we need additional information to complete our evaluation. The specific information required is in the area of seismology and is presented in the Enclosure.

To maintain our licensing review schedule for the Wolf Creek Plant FSAR, we will need responses to the enclosed request by October 1,1981.

If you cannot meet this date, please inform us within seven days after receipt of this letter of the date you plan to submit your responses so that we may rey ew our schedule for any necessary changes.

Please contact Dr. G. E. Edison, Wolf Creek Licensing Project Man ger, if you desire any discussion or clarification of the enclosed request.

Sincerely.

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Robert L. Tedesco, Assistant Director for Licensing Division of Licensing

Enclosure:

,oym j 9 As stated sy-1 cc: See next page

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Mr. Glenn L. Koester

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Vice President - Nuclear Kansas Gas and Electric Company i

201 North Market Street i

P. O. Box 208 l

Wichita, Kansas 67201 i

cc: Mr. Nicholas A. Petrick Ms. Wanda Christy i

Executive Director, SNUPPS 515 N. 1st Street 5 Choke Cherry Road Burlington, Kansas 66839 i

'lockville, Maryland 20750 Eric A. Eisen, Esq.

Ilr. Jay Silberg, Esquire Birch, Horton, Bittner & Monroe i

ahaw, Pittman, Potts & Trowbridge 1140 Connecticut Avenue, N. W.

1800 M Street, N. W.

Washington, D. C.

'1036 t.

Washington, D. C.

20036 Kansans for Sensible Energy i

Mr. Donald T. McPhec P. O. Box 3192 l

Vice President - Production Wichita, Kansas 67201

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j Kansas City Power and Light Company i

1330 Baltimore Avenue P. O. Box 679 j

Kansas City, Missouri 64141 Ms. Mary Ellen Salva i

Route 1, Box 56 Burlington, Kansas 66839 Ms. Treva Hearne, Assistant General Counsel Public Service Commission

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P. O. Box 360 Jefferson City, Missouri 65102 Mr. Tom Vandel i

Resident Inspector / Wolf Creek NPS i

c/o U.S.N.R.C.

P. O. Box 1407 Emporia, Kansas 66801 Mr. Michael C. Kenner Wolf Creek Project Director State Corporation Commission State of Kansas Fourth Floor, State Office Bldg.

Topeka, Kansas 66612 o

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ErlCLOSURE

. WOLF CREEK GEllERATIrlG STATI0tl, UtlIT 1 KAtlSAS GAS Atl0 ELECTRIC COMPAtlY i

DOCKET fl0. STri 50-482 SEISMOLOGY QUESTI0flS 230.0WC Geosciences Branch 230.1WC Provide a figure to illustrate the geographic regions used in th'e probability calculations discussed on FSAR page 2.5-144.

l 230.2WC Provide a figure similar to FSAR Figure 2.5-82 ;omparing the SSE and (a) the scaled response spectra discussed on pages 2.5-148 to 2.5-149 and (b) fluttli's proposed spectra discussed on page 2.5-149.

230.3WC Current staff practice is to approach the development of response spectra by performing statistical analyses on the strong motion records for sites with similar foundation conditions.

(Seeforexample, Lawrence Livermore Laboratory,1979, Draft, Seismic liazard Analysis: Site

)

Specific Response Spectra Results). Estimate the magnitudes of (a) the maximum random earthqt.ake near the site and (b) the maximum event associated with the flemaha Uplif t.

Accordingly, estimate the ground motion at the Wolf Creek site assuming (a) the maximum random event less than 25 km from the site, and (b) the maximum event associated with the tiemaha Uplift about 50 miles from the site.

Select response spectra from accelerograms for recording sites with foundation conditions similar to Wolf C.eek. Choose those events inat are within one-half the estimated magnit'udes. For the data set compute 50 'and 84 percentiles of the response spectra assuming the spectral ordinates are log normally dis-a tributed.. On a plot similar to FSAR Figure 2.5-82 compare these spectra to' the SSE.

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230.4WC.

Discuss the following recent studies and their significance to the Wolf l

Creek site:

Yarger, H.L.,1981, Aeromagnetic Survey of Kansas, EOS Transactions,

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a.

V. 62, N. 17, 173-178.

1 b.

Steeples, D.W. and M. E.,Bickford, 1981, Piggyback Drilling in Kansas:

An Example for the Contint.ntal Scientific' Drilling Program, EOS Transactions, v. 62, no. 18, 473-476.

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