ML20057F201

Forwards Recomputed Seismic Hazard Curves Re GL 88-20, IPEEE, Per

ML20057F201
Person / Time
Site:	Point Beach
Issue date:	10/08/1993
From:	Gody A Office of Nuclear Reactor Regulation
To:	Link R WISCONSIN ELECTRIC POWER CO.
References
GL-88-20, TAC-M83661, TAC-M83662, NUDOCS 9310140285
Download: ML20057F201 (10)

Text

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October 8, 1993 Docket Nos.

50-266 DISTRIBUTION and 50-301

Docket' File <

ACRS(10) l NRC & Loccl PDRs OGC i

Mr. Robert E. Link, Vice President PDIII-3 Reading RHernan Nuclear Power Department JRoe EGreenman, RIII Wisconsin Electric Power Company JZwolinski PDIII-3 Gray 231 West Michigan Street, Room P379 JHannon Milwaukee, Wisconsin 53201 MRushbrook AGody,Jr.

SUBJECT:

GENERIC LETTER 88-20, INDIVIDUAL PLANT EXAMINATIGN FOR EXTERNAL EVENTS (TACS M83661 AND M83662)

By letter dated September 8,1993, you submitted clarification of two aspects of your commitments for the seismic portion of the Point Beach Individual Plant Examination for External Events.

As a part of this clarification, you requested that NRC forward to you recomputed seismic hazard curves prepared by Lawrence Livermore National Laboratory.

I have enclosed the requested curves.

Please contact me at (301) 504-1387, if you have any questions regarding this information.

Sincerely, ORIGINAL SIGNED BY Allen G. Fansen for:

Anthony T. Gody, Jr., Project Manager Project Directorate III-3 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ enclosure:

See next page

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j October 8, 1993 l

Docket Nos. 50-266 1

and 50-301 Mr. Robert E. Link, Vice President Nuclear Power Department Wisconsin Electric Pcwer Company 231 West Michigan Street, Room P379 Milwaukee, Wisconsin 53201 1

SUBJECT:

GENERIC LETTER 88-20, INDIVIDUAL PLANT EXAMINATION FOR EXTERNAL EVENTS (TACS M83661 AND M83662)

By letter dated September 8,1993, you submitted clarification of two aspects of your commitments for the seismic portion of the Point Beach Individual i

Plant Examination for External Events. _ As a part of this clarification, you requested that NRC forward to you recumputed seismic hazard curves prepared by Lawrence Livermore National Laboratory, i

I have enclosed the requested curves.

Please contact me at (301) 504-1387, if

[

you have any questions regarding this information.

Sincerely,-

~u~

Anthony T. Gody, Jr., Project Manager Project Directorate III-3 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation i

Enclosure.

As stated i

cc w/ enclosure:

See next page k

l A

I

Mr. Robert E. Link Point Beach Nuclear Plant Wisconsin Electric Power Company Unit Nos. I and 2 cc:

Ernest L. Blake, Jr.

Shaw, Pittman, Potts & Trowbridge 2300 N Street, N.W.

Washington, DC 20037 Mr. Gregory J. Maxfield, Manager Point Beach Nuclear Plant Wisconsin Electric Power Company 6610 Nuclear Road Two Rivers, Wisconsin 54241 Town Chairman Town of Two Creeks Route 3 Two Rivers, Wisconsin 54241 Chairman Public Service Commission of Wisconsin Hills Farms State Office Building Madison, Wisconsin 53702 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Resident Inspector's Office U.S. Nuclear Regulatory Commission 6612 Nuclear Road Two Rivers, Wisconsin 54241

+,

^

ENCLOSURE POINT BEACH SITE 1993 LIVERMORE ANNUAL PROBABILITY OF EXEEDANCE FOR PEAK GROUND ACCELERATION (CM/SEC/SEC)

Percentiles Acceleration Mean 15th 50th 85th 50.

.3125E-03

.3930E-04

.1590E-03

.5760E-03 75.

.1825E-03

.1950E-04

.8960E-04

.3460E-03 150.

.6573E-04

.5340E-05

.2970E-04

.1230E-03 250.

.2804E-04

.1570E-05

.1120E-04

.5260E-04 300.

.2017E-04

.9320E-06

.7560E-05

.3730E-04 400.

1160E-04

.3500E-06

.3900E-05

.2140E-04 500.

.7319E-05

.1480E-06

.2180E-05

.1320E-04 650.

.4089E-05

.5460E-07

.9900E-06

.7010E-05 800.

.2493E-05

.2070E-07

.4950E-06

.4210E-05 1000.

.1414E-05

.5750E-08

.2270E-06

.2280E-05 1993 LIVERMORE UNIFORM HAZARD RESPONSE SPECTRA VARIABLE IS SPECTRAL VELOCITY (CM/SEC)

Return Frequency Percentiles Period (Hz)

Mean 15th 50th 85th 500 years 1.0

.641

.162

.430 1.050 2.5

.570

.133

.359 1.090 5.0

.549

.125

.333

.943 10.0

.285

.047

.184

.533 25.0

.089

.010

.048

.154 1000 years 1.0 1.093

.232

.710 1.630 2.5 1.026

.192

.600 1.790 5.0 1.022

.184

.559 1.620 10.0

.537

.078

.320 1.030 25.0

.168

.016

.104

.278 2000 years 1.0 1.706

.333 1.100 2.540 2.5 1.757

.277 1.000 2.950 5.0 1.793

.271

.937 2.750 10.0 1.009

.128

.556 1.680 25.0

.307

.033

.176

.503 5000 years 1.0 3.073

.536 1.630 4.550 2.5 3.579

.448 1.630 5.560 5.0 3.767

.454 1.600 5.380 10.0 1.956

.236 1.120 3.180 25.0

.679

.081

.354 1.070 10000 years 1.0 4.796

.768 2.200 7.050 2.5 5.999

.645 2.350 8.340 5.0 6.271

.669 2.360 7.830 10.0 3.187

.374 1.720 4.680 25.0 1.169

.135

.601 1.660 k

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