ML19316A787
| ML19316A787 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 04/25/1980 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Linder F DAIRYLAND POWER COOPERATIVE |
| References | |
| TASK-02-04, TASK-2-4, TASK-RR NUDOCS 8005270523 | |
| Download: ML19316A787 (4) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION
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j WASHINGTON, D. C. 20555 April 25,1980 Docht No. 50-409 Mr. Frank Linder General Manager Dairyland Power Cooperative 2615 East Avenue South La Crosse, Wisconsin 54601
Dear Mr. Linder:
We have reviewed your " Answer to Order to Show Cause" dated March 25, 1980, and its attached " Response to NRC Concerns on Liquefaction' Potential at La Crosse Boiling Water Reactor (LACBWR) Site Near Genoa, Vernon County, Wisconsin," dated March 21,1980 (Response). At the present time, our review indicates that, although there is some theoretical basis for the judgements expressed in the Response, the quantification and documentation provided is presently inadequate for us to independently eYaluate those judgements.
To continue our review of your response, we require the additional information indicated in the enclosure to this letter.
Therefore, pursuant to 10 CFR 50.54(f), please respond to the enclosed request for additional infomation in writing under oath or affimation.
Please infom us by letter within ten days of-your receipt of this letter of your intent to respond and provide a schedule for such response.
~ ncerely, c
Dennis L. Zieman hief Operating Reactors Branch #2 Division of Operating Reactors
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page l
8005270 O 3
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Mr. Frank Linder
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April 25,1980 w/ enclosure:
cc Fritz Schubert. Esquire Director, Technical Assessment Staff Attorney Division Dairyland Power Cooperative Office of Radiation Programs 2615 East Avenue South (AW-459)
La Crosse, Wisconsin 54601 U. S. Environmental Protection Agency O. S. Heistand, Jr., Esquire Crystal Mall #2 Morgan, Lewis & Bockius Arlington, Virginia 20460 1800 M Street, N. W.
Washington, D. C.
20036 U. S. Environmental Protection Agency Mr. R. E. Shimshak Federal Activities Branch La Crosse Boiling Water Reactor Region V Office Dairyland Power Cooperative ATTN:
EIS C0ORDINATOR P. O. Box 135 230 South Dearborn Street Genoa, Wisconsin 54632 Chicago, Illinois 60604 Coulee Region Energy Coalition Charles Bechhoefer Esq., Chairman ATTN: George R. Nygaard.
Atomic Safety and Licensing Board P. O. Box 1583 U. S. Nuclear Regulatory Comission La Crosse, Wisconsin 54601 Washington, D. C.
20555 La Crosse Public Library Dr. George C. Anderson 800 Main Street Department of Oceanography La Crosse, Wisconsin 54601 University of Washington Seattle, Washington 98195 Mrs. Ellen Sabelko Society Against Nuclear Energy Mr. Ralph S. Decker 929 Cameron Trail Route 4, Box 1900 Eau Claire, Wisconsin 54701 Cambridge, Maryland 21613 Town Chairman Dr. Lawrence R. Quarles Town of Genoa Kendal at Longwood, Apt. 51 Rcute 1 Kenneth Square, Pennsylvania 19348 Genoa, Wisconsin 54632 Chairman, Public Service Comission Thomas S. Moore, Esq.
of Wisconsin Atomic Safety and Licensing Appeal Board Hill Farms State Office Building U. S. Nuclear Regulatory Comission Madison, Wisconsin 53702 Washington, D. C.
20555 Alan S. Rosenthal, Esq., Chairman Atomic Safety and Licensing Appeal Board' U. S. Nuclear Regulatory Comission j
Washington, D. C.
20555
t La Crosse Show Cause Order Review Ouestions 1.
The Response focuses on the containment building.
The turbine building is also important and may be more vulnerable. All structures and components critical to safe shutdown need to be identified and evaluated to conclude that mitigative measures are unnecessary.
If some structures are excluded, due to alternate safe shutdown capability, these structures and the alternate safe shutdown capability should be identified.
2.
The Response states that the density and earth pressure coefficient of the soils beneath and around the reactor foundation have been i
significantlyaffectedbythedrihingofpiles. An undocumented reference to a Dames and Moore project was raised to justify this 3
statement.
]
i a.
Provide data from the above referenced Dames and Moore project i
i used to justify this statement.
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b.
Provide data from other case histories which reflect on these l-conditions.
Provide, reference, and discuss any reports, if known, which do not support assumed increases in SPT blow counts and overconsolidation ratio.
c.
Provide data that substantiates that insitu material behaves as if i
it were at an overconsolidation ratio of 4.
d.
Provide site specific data to substantiate the (1
- data listed 1
l in Table 1 to the Response.
3.
Provideanyobservationsofheaveorsettlementduringexca6ationand pile driving during site construction.
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4.
Provide a basis for the increase of 3 lb/ft assumed for under the reactor vessel.
Provide a basis for any increase in density J
.under other structures supported by driven piles.
. ProvideatabulationofallN;anddepthhaluesforeachboringandplot 5.
the results on a figure with N) as the abscissa, and d,epth as the ordinate.
Show the location of the FS=1.0 line.
6.
Prohidedatatosubstantiatethattheeffectofanoiledropeistoincrease
. N by 20%'.
TheResponsehascharacterizedtheSSEascorrespondingtoa"herylow 7.
seismic risk". Accordingly, the Response states that "using the designated seismicparametersshouldleadtoconserhatiheconclusions".
Inhiewof theimplicationsinyourresponsethatmarginmayexistrelatihetothe existingspecificationoftheSSE,inhestigatewhetheralowerSSEmay bejustifiedandifso,prohidethebasisforsuchaposition.
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