ML19320A491
| ML19320A491 | |
| Person / Time | |
|---|---|
| Site: | Vallecitos File:GEH Hitachi icon.png |
| Issue date: | 06/10/1980 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Darmitzel R GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 8006250299 | |
| Download: ML19320A491 (1) | |
Text
,*-.
.)
d ertg)g j
UNITED STATES y
.ri (
g NUCLEAR REG'ULATORY COMMISSION a E WASHINGTON, D. C. 20555 b
June 10, 1980 Docket No. 50-70 Mr. R. W. Darmitzel, Manager Irradiation Processing Product Section Vallecitos Nuclear Center General Electric Company P. O. Box 460 Pleasanton, California 94566
Dear Mr. Darmiczel:
On May 23,1980 we issued our position regarding the proper geologic and seismic design bases for the General Electric Test Reactor (GETR). The design bases we specified are more severe than those upon which your structural analyses are based.
By letters dated April 23 and May 8, 1980, you submitted reports regarding the effects of various combinations of vibratory ground motion and surface offset. As a result of our review of your reports as well as discussions with our consultants, we find that additional information, as indicated below, is necessary before we can complete our evaluation of the GETR seismic design.
You are requested to provide additional information justifying the ability of the facility, including all essential structures, systems and components, to meet the loadings associated with the design bases specified in our May 23,1980 evaluation.
This information should include, for both the maximum vibratory ground motion case and the combined surface rupture and vibratory ground motion case, a description of the combined effects (e.g. stresses, response spectra) at the highly affected regions and how these effects were detennined.. All design basis loads, including seismic loads due to motion in two horizontal and one vertical direction, should be considered in determining the combined effects.
If, in your determina-tion of the loadings associated with our specified design bases, you intend to rely on your analysis of " incipient local yielding" of the supporting soils (May 8, 1980 submittal) you must provide these analyses for our review.
Please inform us of your response schedule within seven days of the date of this letter.
Sincerely, Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing cc: See next page 8006250
..gpu=g.
General Electric Company ec w/enclosu,re(s):
California Department of Health ATTN:
Chief, Environmental Radiation Dr. Harry Foreman, Member Control Unit Atomic Safety and Licensing Board F.adiologic Health Section Box 395, Mayo 714 P Street, Room 498 University of Minnesota Sacramento,' California 95184 Minneapolis, Minnesota S5455 Honorable Ronald V. Dellums Ms. Barbara Shockley ATTN: Ms. Nancy Snow 1890 Bockman Road General Delivery, Civic Center San Lorenzo, California 94580 Station Oakland, California 94604 Advise y Comnittee on Reactor Safeguards Friends of the Earth U. S.J Nuclear Regulatory Commission
' ATTN:
W. Andreg Baldwin, Esquire Washington, D. C.
20555 Legal Director 124 Spear Street San Francisco, California 94105 Jed Somit, Esquire 100 Bush Street Suite 304 San Francisco, California 94104 Herbert Grossman, Esq., Chairman.
Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Mr. Gustave A. Linenberger, Member Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 George Edgar, Esquire Morgan, Lewis & Bockius 1800 M Street, NW Washington, D. C.
20036 e
t 8
..S..
__.g.-,--.
-3 i
3 e'
6,,