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' c t LE Pw o oe t 627 4377 April 21,1964 Mr. Edson Case Division of Licenses and Reguhtions U. S. Atomic Energy Commission ' >.
Washington 25, D. C.
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Dear Mr. Case:
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After the meeting at Bethesda on' April.14, I requested'that your secretary reproduce a copy of my comments on PG&E Amendment #6 which I assume -
you have. Some of the comments therein;were not discussed in the meeting.
Herewith I am transmitting a similar set of comments applying to PG&E Amendment #7. At the time of the meeting these were available only in '
very rough form. For this reason, I could not furnish a copy at the time.
j The material in these comments may be usefat particularly since it pro-i vides you with specific information which should be adequate to enable you l
to obtain the H&N & Newmark reports on tunnet lin er s.
l Sinc e rely 'yc ur s,
y OLMES & NARVER, INC.
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.j O "J2c p Comments on PG&E - Amendm<mt #7
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This amendment appears to merely present in writing what was stated l
verbally by the applicant before the ACRS committee on February 24 and provides little if any, amplifying information. The following are
.q specific comments.
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1.
On page 2 the proposal is male to fill the annular space between l
the containment structure anc) the adjacent rock with a layer of compressible material of a t ;pe yet to be selected. It is assumed
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that this statement applies 2/tso to the space between the wall of.
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I the containment structure add the adjacent soil above the rock. The statement " type yet to be selected" might better read " type yet to be deve loped". The general subject of frangible filler materials has received a large amount of study in recent years in connection with-underground facilities hardened against nuclear attack. This effort has included tests at the Nevada Test Site. Various government-agencies have been involved including the Waterways Experiment Station, Vicksburg, the Corps of Engineers and the Defense Atomic i
Support Agency (DASA). The University of Illinois has also been in-volved as well as the firm of H&N. Among the various materials investigated have been plastic foams, such as polyurethane, vermi-culite concrete, perlite concrete, and volcanic cinders.
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Polyurethane Foam i
1 The firm of H&N has utilized plastic foams in connection with shock i
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isolation of towers, winch footings, and other similar installations at
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the Nevada Test Site. Soft foams are subject to creep. This tendency I
is increased at low temperatures. The soft foams also tend to lose strength under exposure to moisture, but the harder foams are less effected. A foam with a compressive strength of about 150 psi weighs approximately 6 lbs. per cubic foot (and therefore tends to float) and costs roughly about $1. 00 per Ib. or possibly 3 times the cost of con-i ventional conc rete. A foam in this strength would not be greatly effected by creep or exposure to moisture. It Onl1 sustain a compressive deformation of approximately 50% before locking.
Vermiculite Concrete This concrete consists of Portland cement and aggregate consisting I
solely of vermiculite. The vermiculite aggregate has directional pro-l p e rtie s.
However, when in concrete the random orientation of the particles causes reasonably uniform directional characteristics, s
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1 Comments on PGLE Page 2 1
i Vermiculite concretes in the range of 150 to 200 psi strength have l
been made. Unit weight in this strength range is less than that of wate r. The yield range, unlike that of polyurethane foam, has a decided slope upward, and, in the: case of a 200 psi concrete, the locking range appears to begin at about 25% elongation. 3The Water-ways Experiment Station and the University of Texas have'both in-vestigated the properties of vermiculite concrete.
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The information obtained at the Nevada Test S'pe in connection with tunnel liners is contained in the following H&W report: Holmes, Kwan,
Skinner, and Wong Loading Response, and Egination of Tunnels and i
Tunnel Liners in Concrete - Operation Nwgat, Shot Hard Hat, Project
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3.1 POR - 1801, for Defense Atomic. Opport Agency, July 1963 (Secr et). The data obtained in this report forrried the basis for a sub-sequent report prepared by Drs. Newmark and Merritt entitled Design l
of Test of Nearly Invulnerable Structures (n Granite (Secret) which is i
identified with a new series of tests now being proposed at the Nevada l
Test Site. It is my understanding that the linings to be investigated will include polyurethane foam and some new types of foam concretes.
One factor to be considered in the use of frangible materials is their j
effect on the response of the structure. The deformations of these l
materiais in the yield range are irreversible. Consequently, ocil'a-
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tions of the containment structure causing lateral pressures sufficiently
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intense to compress the material would tend to leave an annular void.
The structure would then be in contact with the oscillating ground at the base only. This could possibir amplify the input oscillations re-ceived by the equipment within. Whether this void could develop due to ground oscillations alone, in the absence of displacement 00the reactor fault should be investigated 2.
Amendment #7 appears to assume that the movement is along the existing reactor fault.
Mr. Schlocker of the U. S. Geological Survey expressed the belief in the ACRS meeting of February 24 that differential move-ment could occur along iny line beneath the reactor'ar5d not merely along the existing fault. If this is considered to be a credible possibility, then PG&E should resgudy the problem. It should be noted that a movement at approximately 90 to the existing reactor fault could cause collapse of -
the wall in the region of the steam lines witt,the possibility of damage to the isolation valves.
The entito amendment lack t any discussion regarding
Comments on PGLE Page 3 malfunction of critical equipment caused by contact with caved-in walls and, in fact, there is no discussion at all which indicates the extent or nature of the investigations which lead to the conclu-sions given.
3 Amendment #7 needs to be considerably amplified in order to be considered adequate. There should be some description of the number and kind of outside sources of water and power and other umbilical features which must remain intact in order to permit safe shutdown. There should be proof that the isolation valves will function and that all other elements of the containment will remain intact. This situation calls for explanation substantiating the mere statements that survival is possible.
4.
The sketch submitted with the amendment is vague in its delineation of the limits of the concrete, particularly in the area around the toroidal suppression chamber. It should be revised to remove this confusing ambiguity.
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9 s Alaska Quake and Bodega i
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' }T WILL BE no consolation to the people of Alaska, but a
their tragedy may prevent the much discussed Bodega T'
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nucicar power plant from being built near the San Andreas h$ I For a couple of years, many in the San Francisco Bay
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Area have been trying, to bicek Pacific Gas and Electric from building a nuclear reactor en secluded Bodega bay on j
p the coast north of the city. Though some of the opposition results from nature lovers who are opposed to spelling this l
g spot by the invasion of industry, the most effective opposi-9 tion has comgfrom experts who have objected to its being j
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d for the 1906 temblor that wrecked San Francisco.They ha l
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l the Bodega bay plant would be Aw A % M.fwa F atomic poison over the area The local courts have overrul this opposition and the j
final decision now lies with the Atomic Energy Commission K
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But the San Andreas fault, extending from central Alaska
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along the California Codst, along the San Francisco Penin-f f?
j sula, to a point east of Los Angeles, now is shown to bel
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j still active. The AEC may now decide against PG&E:M2175, by
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ritime Union and the Scafarers In-pfE NATIONA ve been threatening to wage a ternational Union i Agriculture Orville Freeman j campaign against Secretar W
because he insists on getting u.at shipped to Russia wheth I
.I Dg er in foreign or American botto s; Freeman wants to help 3j the American farmer, also reduc surpluses, also show the
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. As a result of'his' insistence, Ea rn labor leaders have
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