ML20054C600
| ML20054C600 | |
| Person / Time | |
|---|---|
| Site: | Clinch River |
| Issue date: | 04/09/1982 |
| From: | Check P Office of Nuclear Reactor Regulation |
| To: | Longenecker J ENERGY, DEPT. OF |
| References | |
| NUDOCS 8204210377 | |
| Download: ML20054C600 (6) | |
Text
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Distribution April 9, 1982 Docket File il e
NRC PDR CD e
Docket lio.: 50-537 CRBR Reading
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e. d ggoy" Q R. Stark i
C. Thomas C
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Hr. John R. Longenecker P. Check
,o Licensing and Environmental Coordination R. Rothman E# w..
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Clinch River Breeder Reactor Plant R. McMullen
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U. S. Department of Energy, flE-561 W. Foster Washington, D.C.
20545 P. Shuttleworth E. Tomlinson
Dear Mr. Longenecker:
CRBR Staff
SUBJECT:
CLINCH RIVER BREEDER REACTOR PLA!IT, REQUEST FOR ADDITI0flAL INFORMATI0;l As a result of our review of your application for a constructica permit for the Clinch River Breeder Reactor Plant, we find that we need addi-tional information in the area of Geology and Seismology. Please provide your final responses by May 15, 1982.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
If you desire any discussion or clarification of the infonnation requested, please contact R. M. Stark, Project Manager (301) 492-9732.
Sincerely, Paul S. Check, Director CRBR Program Office Office of Nuclear Reactor Regulation
Enclosure:
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4 o.uc t OFFICIAL RECORD COPY uswo mi--as-seo enc ronu sie no+a nncu cao
s CRBR Questions
.CS 230.1 The last earthquake listed in both Table 2.5-2 and Table 2.5-3 ofthePSARisdatedNohember 30, 1973.
Update both of these seismicity lists to include all more recent pertinent ehents.
Include in Table 2.5-3 all earthquakes of maximum Modified Mercalli intensity greater than IV or magnitude greater than 3 which hahe been reportedinalltectonicprohincesanypartsofwhicharewithin 200 miles of the site. Whereahailable,foreachearthquakeprohide epicenter coordinates, depth of focus, origin time, highest intensity, magnitude, seismic moment, source mechanism, source dimensions, source rise time,rupturehelocity,totaldislocation, fractional
' stress drop and any strong motion recordings; references from which l
the specified information was obtained should be identified. All t
magnitude designations such as m M, M, etc. should be identified..
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The epicenters of all earthquakes listed in Table 2.5-3 should be plotted on a map such as Figure 2.5-8.
Prohide a larger scale map showing earthquakeepicentersofallknownehentswithin50milesofthe site.
CS 230.2 On page 2.5-25 the PSAR states "This prohince has been designated as the Southern Appalachian Tectonic Prohince by the NRC in their
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ehaluation of the Sequoyah Nuclear Plant." The NRC st,aff's position as stated in both the Sequoyah and Watts Bar SER's is that these sites are in the Southern Valley and Ridge Tectonic Prohince. Change the tectonic prohince statement by either correcting the name of the tectonicprohinceorbynotattributingthedesignationtotheNRC.
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o CS 230.3 In paragraph 2.5.2.10 of the PSAR the Safe Shutdown Earthquake is represented as being a peak horizontal ground acceleration of 0.25g used in conjunction with a Regulatory Guide 1.60 response spectrum.
There is no indication for what foundation conditions this SSE is established. Since some category I structures are to be founded on rock and others are to be fpunded on soil / fill, you should specify SSE peak acceleration and spectra for both'of these foundation conditions.
The same conditions should be considered for establishing the OBE.
CS 230.4 The Giles County Virginia earthquake of 1897 is the controlling earthquake for the seismic design of nuclear plant in thd Southern Valley and Ridge tectonic prohince the Clinch Riher Breeder Reactor is located in this prohince.
Dr. G. A. Bollinger has been conducting research on the Giles County, Virginia seismic zone. He has recently written a report titled "The Giles County, VA Seismic Zone - Configuration and Hazard Assess-ment" which was presented at a conference (Earthquakes and Earthquake Engineering - Eastern United States, September 14-16,1981).
BasedonthelocalseismicactihityDr.Bollingerimpliestheexistence l
of a buried fault in the Giles County area.
He uses the largest extent of the seismic zone, taking into account errors in hypocenter location, in order to calculate a possible maximum earthquake of surface wSe magnitude M = 7 f r this zone.
s Prohide a discussion on any effects this hypothesis has on the following with respect to the Clinch Riher Breeder Reacter.
a) The potential of the 1897 earthquake being associated with
-this specific geologic structure; t
3-J 7.0 located
. b). The potential of an earthquake up to M
=
s in Giles County, and any far field ground motion effect (both peak Yalues and response spectrum) at the site from an M =7.0eYentlocatedinGilesCounty.
s c) The potential of similar seismogenic structures being locatedneartheClinchRiYersite,andanyeffectsatthesite from earthquakes on these seismogenic structures.
CS 230.5 Reference 1 on page 2.5-21 and reference 11 on page 2.5-23 are not to the right publications. Reference 129 is not in the reference list.
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CS.231.1 In addition to the work of Bollinger described in Question 230.4, update the DSAR to include a consideration of all pertinent geological and seismological research and other work that has been done since 1974, which is the latest geological reference cited.
Considerable research in geology and seismology has been done since that time in the southeastern United States EYaluate these studies $s to their significance to the geologic and seismic safety of the CRBR site.
In Supplement. 2, page' 59, response to.NRC Qbistfon 323.33..(2.5.3.N, 5
CS 231.2.
you state that the stratigraphic and structural relationships in excaYationsforallCategoryIstructureswillbemappedconcurrent withexcaYation. You further state that the AEC (fiRC) will be kept fullyinformedontheprogressoftheexcahation.
It is our position that you notify Geosciences Branch in sufficient time (at least 1 week)afterexcaYatingandm$pping,$ndpriortoplacinggunite, backfill, or concrete, so that a trip to the site can be arranged by a staff geologist if considered necessary.
In addition to bedrock features the map should.show the relationship of oYerlying soils, particularly the high terrace deposits, to structures in the rock.
The geologic maps should be included in the FSAR.
In response to flRC Ouestion 230.2R during the enhironmental reYiew, CS 231.3 which addressed possible undetected c$hities in Unit A lidiestone,,
youindicatedth$t$testgroutingprogramandabedrockverification program will be conducted $nd will confirm the homogeneity of the Unit A limestone. ProYideadescriptionofthetestgroutingprogramand the Yerification program, including methods used and locations and depths of proposed borings.
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, cc:
Dr. Cadet H. Hand, Jr., Director Barbara A. Finamore Bodega Marine Laboratory S. Jacob Scherr University of California Ellyn R. Weiss P. O. Box 247 Dr. Thomas B. Cochran Bodega Bay, California 94923 Natural Resources Defense Council, Inc.
Daniel Swanson 1725 I Street, N.W.
Office of the Executive Suite 600 Legal Director Washington, D.C.
20006 U. S. Nuclear Regulatory Commission Eldon V. C. Greenberg Washington, D.C.
20555 Tuttle & Taylor 1901 L Street, N.W.
" William B. Hubbard, Esq.
Suite 805 Assistant Attorney General Washington, D.C.
20036 State of Tennessee Office of the Attorney General L. Ribb 450 James Robertson Parkway LNR Associates Nashville, TN 37219 Nuclear Power Safety Consultants 8605 Grimsby Court William E. Lantrip, Esq.
Potomac, MD 20354 City Attorney Municipal Building P. O. Box 1 Oak Ridge, TN 37830 George L. Edgar, Esq.
Morgan, Lewis & Bockius 1800 M Street, N.W.
Washington, D.C.
20036 Herbert S. Sanger, Jr., Esq.
General Counsel Tennessee Valley Authority Knoxville, TN 37902 Chase Stephens, Chief Docketing and Service Section Office of the Secretary U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Raymond L. Copeland Project Management Corp.
P. O. Box U Oak Ridge, Tennessee 37830
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