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UNITED CRATES
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1 ATOMIC ENERGY COMMIGSION I
- WASHINGv0N, D.C. 20545
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- A February 11, 1964 l
Docket Nos. 50-133, j
l Pacific Cas & Electric Company 245 Market Street San Francisco 6, California l
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l Gentlemen:
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l The Atomic Energy Commission and the Department of the Army are jointly sponsoring a study of reactor operators entitled " Technical Study of the Characteristics, Associaticos and Predictions of Perform-ence of Reactor Operators." The purpose of this letter is to apprise facility licensees and authorization holders and other interested parties of the nature of this project and to invite comments concerning centent or participation.
The project vill be a comprehensive study of many facets concern-ing operators and their operation of reactors. The information derived therefrom is expected to be of interest to operating managements, per-sonnel departments and training directors as well as regulatory organi-zations. The objective of the study is twofold, as follows:
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l Phase I, to develop a correlation between attributes of individuals and the likelihood they vill make good reactor coerators Phase II.
to develop and demonstrate a means for effective testing for attributes identified as key predictors of likely good performance.
Earlier this year, proposals to perform this study were received from several qualified organizations. The American Institute for Research, located in Pittsburgh, Pennsylvania, was selected as the contractor for this study.
Implementation of Phase I of the study is now commencing. In k
the early stages of this phase, the contractor vill visit a number of reactor facilities for preliminary discussions and orientation.
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In addition to facilities owned by the Commission and the Department of the Navy, it fs planned to include a representative group of licensed facilities in the study. The suggested list of licensed facilities has not yet been established but will be based on inclusion
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of the requisite variety of facility types and consideration of 6ther statistical factors relating to the study. After suggested facilities l
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am proposed by the contractor, the Division of Licensing and Regulation vill contact each one concerned to determine whether that 'organir,ation vould care to participate. Participation in the study by a licensed facility is,. of course, at the discretion of the licensee.
j It is planned that reports generated as the result of this study' vill be made available to the public. Although it is expected that such mports vill include data and conclusions, no facility or operator vill be specifically identified.
We plan to keep you apprised of any significant developments in this project and vill be happy to meelve any comments that you -
may care to offer.
.i A copy of the public announcement is enclosed for your information.
- Sincerely yours,.
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R. Lowenstein, Director Division of Licensing and Regulation Enclosum :
Public announcement d
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s For Information DL For appropriate handling For preparation of reply for Chairman's signature I
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For discussion at Coornissioners' Information Meeting i
For distribution to other Commissioners Daily Log u;;,r -
9 REMARKS:
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TorPG&E (F.F. Hautz Chief Civil Engineer) 1 ce rectd & 9 cys xeroxed in I&R w/cc to Seaborg (Directed to DR for I
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Ltr..comenting favorably from a pro-j j
j fessional standpoint on PG&E's proposed a -((;_ M ic e 3-3
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j ut Fua Aaru s wfua a nun 9hm site after their one-day visit to site
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s 26 February 1964 e
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F. F. Hautz E
-3i Chief Civil Engineer
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,2 g Dear Sirs In light of the continuing dispute over the advi., ability of a
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nuclear-powered generator at Bodega Head, and particularly in light of
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Bonilla and S&hlocker's recent report, we feel that we should express our l
professional opinions relative to the site. The opinions here expressed I
J are based upon a one-day visit to the site and the reading of reports by Bonilla and Schlocker, by Eaton, and by St. kaand.
It should be made clear at the outset that this opinion was not solicited by you, that neither of us have any connection with P.G.
l and E. other than as customers, and that our visit to the site was at our request and was made possible by your courtesy.
From a professional geological point of view, there are two I
major problems concerned with major site damage due to earthquakes a-long the San Andreas Fault System. First is that of damage due to ex-
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cessive ground vibration during an earthquake with epicenter near the site. We feel that Dr. Hugo Benioff is of great competence in this area l
of investigation and we have no reticence about accopting his evalua-tion of the site relative to this type of damage. Any realistically i
foreseeable ground motion can be handled by appropriate construction.
The second s(urce of possible damage would to actual rock displacement within the area of the site, thus tending to tear the structure apart with possibly serious consequences. The pertinent ques-tions in this regard seem to be the following; What is the life-time of the reactor being installed?
What is the likelihood of displacement within the site-
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What magnitude of displacement would be expected if' dis-placement occurred?
What magnitude of displacement could be accommodated by the planned structure without' damage to.the reactor vesself -
We were informed by you that the reactor life will be about 200 years.
The entire Bodega Head is strongly sheared as is the proposed i
site; however, only slight distortion of such a rigid mass as granite at -
shallow depths in the earth vill give rise to este,nsively sheared rock.
Such shearing is not of itself evidence of. large displacement within the I
region of the shear-st-face. The only good indications of measureable movements within the site are small displacements of a narrow vein that completely crosses the bottom of the hole, the total offset of 1he vain being a foot or so with none of the individeal displacements exceeding a few inches. In our opinion, th's most recent fault, called the " Shaft Fault" by Bonilla and Schlocker,has not caused these displacements. They a.re of a l
right lateral nature and are older than the Shaft Fault. The Shaft Fault has 1
had virtually no displacement or a few inches at most and has a different orientation from the small faults offsetting the valn. It seems reasonable i
to us that the Shaft Fault is the result of tensional forces,.this opinion being based uoon its orientation relative to the San Andreas Fault, its dip toward the San Andreas Fault, and on the fact that it does not cut through all of the overlying Pleistocene deposits. As we believe that the stress -
.j pattern giving rise to the present g6 ology of western California has been operative for at least 90 million years, such semil displacements as' those observed seem extremely unlikely during the next 200 years. There are no e
large faults through the site. - Your radiocarbon date on wood fragments from sediments overlying the granite indicatos no faulting in' the site area for at 1
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possibly much more, em tha da g t:chniqua us:d is
~ incapable of dating beyond 40,000 years and can only indicate "more than 40,000 years" for older materials no matter what their age.
You informed us that, due to the proposed style of construction, l
in which the reactor vossel will be essentially free-standing within the l
major structure, the site could undergo 2-4 inches of shear displacement I
without damage to the reactor vessel. Therefore, we can see no reasonable objection to the site. We are advising the taking of a calculated risk, but this risk seems so small as to be insignificant. In brief, displace-I ments of the magnitude observable in the site have not occurred within I
t more than 40,000 years, have occurred only a few times within the past l
i 90,000,000 years, and would not dangerously effect the resctor if they j
did occur.
The argument presented relative to site safety need ne t con-l
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i cern itself with the dispute among geologists as to the nature of move-
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q ments along the San Andreas Fault during the past millions of years but
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1 only with the displacements to be expected within the site area. The rel-evant evidence for this is to be found within the site. The evidence in 1
the field makes it clear to us that no major displacement has ever taken i
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placs within the site area and none is to be expected in the near future.
I Before our one day trip to the site, both of us were emotionally biased against use of the site by P. G. and E.
Having now seen the site and been made aware of construction plans and the availability of the Head to the Public except for the acres reserved by P. G. and E., we can no longer
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maintain an attitude of antagonism toward use of the site by P. G. and E Q Please feel free to use this letter as you so choose.
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2s Youes sincerely,
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Copy to Dr. Glen Seaborg Chairman, Atomic Energy Commission
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SiO Washington 25 Garniss H. Curtis l
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