ML20003D831

Discusses Results of Limited Analysis for Site.Encl Estimate of Seismic Hazard for Site Developed in Same Manner as Seismic Hazard for Sites Involved in SEP

ML20003D831
Person / Time
Site:	Seabrook
Issue date:	03/26/1981
From:	Bernreuter D LAWRENCE LIVERMORE NATIONAL LABORATORY
To:	Rolonda Jackson Office of Nuclear Reactor Regulation
Shared Package
ML20003D828	List: ML20003D831
References
EG-81-14, NUDOCS 8104010082
Download: ML20003D831 (3)

Text

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17 NUCLEAR SYSTEMS SAFETY PROGRAM L- (

i EG-81-14 March 26, 1981 i

Dr. Robert E. Jackson,ochief 4

Geosciences Branch Division of Engineering

- U. S. Nuclear. Regulatory Commission Washington, D. C. 20555

Dear Dr. Jackson:

i The. purpose of this letter is to provide you with results of our limited analysis for the Seabrook site that you requested some -

time ago. We developed the enclosed estimate of the seismic .

hazard for the'Scabrook site in the same manner that we developed the seismic hazard for the sites involved in the Systematic

{

Evaluation Program (SEP). We have used the model recommen,ded by NRC and described in Jackson (1980) to specify the hazard for the sites-located in New England, t Figure 1 shows the results (synthesis) compared to R.G. 1.60

} scaled to 0.25g (245.4cm/S2) for 5% damping. The data used to construct this figure are given in Table 1.

4 I hope that this is sufficient information however, if not, 3 feel free.to call me and I will be happy to supply you with any additional information you might need.

Sincerely,

./ '7n Don L. Bernreuter, Leader

[l W i

Engi neering Geosciences Group l

I' DLB/sa Reference JACKSON, R. E. (1980), " Initial Review and Recommendations for Site Specific Spectra at SEP Sites," M2morandum to D.

Crutchfield, July 23, 1980, U.S. NRC.

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Table 1 SY!JTilESIS LOADI!1G VAI,UES AT TIIE SEABROOK SITE FOR 5% DAMPED PSEUDO RELATIVE VELOCITY SPECTRUM PERIOD Sy SEC cm/s .

.04 1.82

.05 2.44

.08 4.71

.1 6.68

.2 19.79

.3 29.01

.4 33.24 1.0 38.78 2.0 30.89 l

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