ML18046A796

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Forwards NRC Evaluation for SEP Topics II-4, Geology & Seismology & II-4.B, Proximity of Capable Tectonic Structures in Plant Vicinity. Evaluation Will Be Basic Input to Integrated Safety Assessment for Facility
ML18046A796
Person / Time
Site: Palisades 
Issue date: 07/09/1981
From: Crutchfield D
Office of Nuclear Reactor Regulation
To: Hoffman D
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
References
TASK-02-04, TASK-02-04.B, TASK-2-4, TASK-2-4.B, TASK-RR LSO5-81-07-034, LSO5-81-7-34, NUDOCS 8107160362
Download: ML18046A796 (13)
v • d • e


Text

'*.:.

Docket No. 50-255 Lsos:..a1- 01-034 Mr. David P. Hoffman

'1 Nuclear Licensing Administrator Consumers Power Company 212 West Michigan Avenue Jackson, :~ichi gan 49201

Dear Mr.. Hoffman:

July 9, 1981 suejECT:

S~P REVIEW TOPICS II-4, GEOLOGY AND SEISMOLOGY AND II-4.B,

  • PROXIMITY OF CAPABLE TECTONIC STRUCTURES IN PLANT VICINITY

.Enclosed is a copy of our evaluation for Systematic Evaluation Program topics II-4, ~()~ogy and Seismology, 11 and 11-4.'B,* "Proxi~lty of Capable Tectonic Struatit:ires in Plant Vicinity." These assessments compare your site condition~ 'as described in the docket and references with the criteria currently used by the staff for licensing new facilities.

Please inform us i*f your site condition differs from the licensing basis assumed 1n our assessments.

Our review of these topics r_*; ~~--c~nip_l_e-~e -~rid.~ Jh 1

~:-~-Y.a l_ lj_~ ! i.C?fl~ ~i fl ~e __ *~

a basic input to the integrated safety assessment for your fac11 ity

  • unless you identify changes needed to reflect the existing site condi-tion at your faCflity. These topic assessments may be revised in the future if'NRC criteria relating to these topics are modified before t~e integra~~d assessment is completed.

Enclosure:

As stated cc w/enclosure:

See next page 8107160362 810709 PDR ADOCK 05000255

'I P

PDR Sincerely,

.. *~ :.

Dennis M. Crutchfield, Chief Operating Reactors Branch No.

Division of Licensing

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  • CfflCJAL R~CCRC CQPY nUSGP01980,-329*824 NRC FORM 3181101801 NRCM-0.240

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Mr. David P. Hoffman Nuclear Licensing Administrator Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201

Dear Mr. Hoffman:

July 9, 1981

SUBJECT:

SEP REVIEW TOPICS II-4, GEOLOGY AND SEISMOLOGY AND II-4.B, PROXIMITY OF CAPABLE TECTONIC STRUCTURES IN PLANT VICINITY Enclosed is a copy of our evaluation for Systematic Evaluation Program Topics II-4, 'Geology and Seismology," and II-4.B, "Proximity of Capable Tectonic Structures in Plant Vicinity." These assessments compare your site condition, as described in the docket and references with the criteria currently*used by the staff for licensing new facilities.

Please inform us if your site condition differs from the licensing basis assumed in our ~ssessments.

Our review of these topics is complete and this evaluation will be a basic input to the integrated safety assessment for your facility unless you identify changes needed to reflect the. existing site.condi-tion at your facility. These topic assessments may be revised in the future if NRC criteria relating to these topics are modified before

.the integrated assessment is completed.

Enclosure:

As stated -

cc w/enclosure:

See next page Sincere1y,

.. \\

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{LJci.fi.~,

  • fa~~~
  • ~t:.--'Oennis M. Crutchfield, Chief

!: Operating Reactors Branch No. 5 Division of Licensing

/*:

Mr. David P. Hoffman cc M. I. Miller, Esquire Isham, Lincoln & Beale Suite 4200 One.Fir'st National Plaza Chicago, Illinois 60670 Mr. Paul A. Perry, Secretary Consumers* Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Power Company 212 West Mi chi ga n Avenue Jackson,. Michigan 49201 Myron M. Cherry, Esquire su*ite 4501 One IBM Plaza Chic~go, Illinois 60611 Ms. Mary P. Sinclair Great Lakes Energy Alliance 5711 Summerset Drive Midland, Michigan 48640 Kalamazoo Public Library 315 South Rose Street Kalamazoo, Michigan 49006 Township Supervisor Covert Township Route 1, Box 10 Van Buren County, Michigan 49043 Offic~ of th~ Governor (2)

Room 1 - Capitol Building Lans~ng, Michigan 48913 William J. Scanlon, Esquire 2034 Pauline Boulevard Ann ArQpr.__Mj chi gan 48103 Palisades Plant ATTN:

Mr. Robert Montross Plant Manager Covert, Michigan 49043

u. s. Environmental Protection Agency.

Federal Activities Branch Region V Office

  • ATTN:

EIS COORDINATOR..

230 South Dearborn Street Chicago, Illinois 60604 Charles Bechhoefer, Esq., Chairman Atomic Safety and Licensing Board Panel.

u. s. Nuclear Regulatory Commission Washington, o. C.

20555

  • Or. George C. Anderson Department of Oceanography University of Washington

. Seattle, Washington 98195 Dr. M. Stanley Livingston 1005 Calle Largo Santa Fe, New Mexico 87501

  • .Resident *.Inspector c/o u*. s. NRC P. o. Box 87 South Haven, Michigari 49090

SEP SAFETY TOPIC EVALUATION PALISADES NUCLEAR POWER PLANT UNIT 1 TOPIC 11-4, Geology and Seismology Introduction During the time frame when SEP plants were designed, the licensees, because compliance with Regulatory Guide 1.70 was not required, usually provided only minimal information in geologic and seismologiC areas. Therefore, in order to assess the adequacy of the design of these older plants with respect to local geologic and seismologic phenomena, a re-review was necessary.

The

. scope of the topic review included surface faulting, potential landslides, ground

.collapse, possiblity of liquefaction, etc.

Review Criteria

1.

Standard Review Plan Sections 2.5.1 thru 2.5.5 *

2.

Appendix A to 10 CFR Part 100 Related Topics and Interfaces The related safety topics are 11-4.A, 11-4.B, arid 11-4.C.

The conclusions from each of these sub-topics form a part of the overall conclusion for this topic, i.e., sit~ specific ground response spectrum fQr this site.

Evaluation The geology and seismology of the Palisades site was first reviewed in late...,

1967.

The *results of that review are summarized in the Safety Evaluation Report, February 7, 1967.

Our geological advisor, the U. S. Geological Survey (USGS), concluded that the regional geologic analysis by Consumers Power Company (CPC) had been "logically derived and presented an adequate appraisal of those

e* *.

aspects of the geology which would be pertinent to an*eng-ineerfog evaluatiot1 of the site" {USAEC, 1967).

The*USGS further concluded that "earthquakes within the region will continue to occur at about the same frequency and intensity that have been recorded in the past 100 years, and that there are no identifiable faults or other geologic _structures whic~ could be expected to localize earthquakes in the immedia~e vicinity of the site." Our seismolo-gical advisor, the National Oceanic and Atmospheric Administration (NOAA),

  • concluded th.at "the area will be subjected to MM Intensity VI with an accelera-tion of.lOg in the sand dune material, and that a maximum potential earthquake of MM Intensity VII with accelerations of.20g within the dun*e material should be considered."

(USAEC, 1967).

The AEC staff.concurred with. these conclusions.

Recently, as a part of the SEP, a re-review of the seismological 'ha_zard at the Palisades site was conducted through the Site Specific Spectra Program* for the

. ~

~

Eastern United States SEP facilities.. The current recoinmendatior. for the seismic input ground motion was transmitted to the SEP Owners in a le.tter from D. M.

Crutchfield, dated June 17, 1981.

In Attachment 2 to the letter, a memo from the Geosciences Branch, Division of Engineering, entitle'd,. "Final Review and Recommendations for Site Specific Spectra at SEP Sites," the following conclusion was drawn:

"Based upon our ongoing review of s'ite geology to sa_tisfy-SEP Topics II-4; Geology and Seismology, and II-4.B; Proximity" of Capable ~tructures t~_ t~~ ~ite, __ we d~ not anticipate our final review of: these topics ~ill".*

h_ave any impact upon the recommended spectra.

11...

During the SEP geological review for the Palisades site the ~taff reviewed

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the following ~aterials: the Palisades PSAR. CPC consultants fciundation investigation reports. the Palisades SER. the PSAR for Wisconsin Utilities r-. r-*

-3.,.

-:----~---~-----

.*Haven NuclEar Plant, the SER for Koshkonong Nuclear Plant, the SER for Greenwood Energy Center, staff'c~ncl~sions ~egarding offshore seismic reflec~ion ~ata in lak~ Michigan.(memo from R. Denise t6 B~ Grimes, October 11, 1978), topographic maps, aerial photographs, and selected documents from the published literature (a.list of references cited is provided at the end of this c~apter). A geological reconnai~sance of the Palisades site and the surrounding region was conducted on July 17, 1979.

Duri~g this*review, new information, which had been identified during the e~~luati6n of t~e Ha~en~ Wisconsin site (WEPCO, 1978), ~as. considered as

.t6 its.significarice with respect to the geologic and seismic analysis *of Palisades.* This* new infQrmati~n.consisted of seismic ref1e.ction data indicating

~he possible presence of fa~lts beneath Lake Michigan.

The staff reviewed

  • these data and concluded that th~ anomali~s appearing on the seismic profiles, if indeed they \\*;ere faults, did not' constitute a hazard to the sites 1n the Lake.

~ichigan region (Denise, 1978). Therefore, conclusions made during the Palisades C? and OL re~ie\\\\'S are not in~alidated by t.Ms ne\\\\' information.

The following P!lragraphs contain a descripti.on* of the regional and site geology and the bases.for the s~aff's conclusion that the site is safe from a geological point of view.

The site is located in the Eastern Lake Section of the Central Lowland Physiographic Province (Fenneman, 1938). The land surface is mantled by glacial drift that ranges.in thickn~ss from a.few.feet to sever~l h~ndred feet. It is s~tuat~d on the eastern shore of Lake Michigan about 4 l/2 miles south of South Haven, Michigan, and approximately 35 miles north

of the Indiana state line. The lana rises steeply from elevation +600 msl near the lake shore to +740 near the site (more than +800 regionally),

then slopes abruptly down to +610 about 1/2 mile east of the shoreline into**;

a north-south oriented topographic basin (Brandywine Creek drainage bas.in).

(CPC, 1966).

Ground surface in the basin is slightly rolling and rises.

g:ntly to the east to aboµt +720 atop Covert R'dge, a glacial terminal mJraine. Surface drainage of the basin is to Brand.)'\\*Jine Creek \\-Jhich cuts through.the shoreline ridge to Lake Michigan about 1/2 mile south. of the site.

The lake. b~ttom \\oJest of the site slopes westward from*25 feet depth.at 1/2 mile out to about 160 feet about 10 miles out. Several north-south trending bars *are present offshore, the closest two being lo.cated 300 and 700.feet fro:n the shoreline (Hough, et al 1967) *. *

,Tne Palisades plant is founded within the shoreline rfdge. This ridge,.

\\\\hich is comprised of fi~e, uniform dune sand, is. badly eroded into a; p'attern *.

of small, conical hills, closed depressions, and.minor steep ridges. The

.~~ne sand extends downward to elevations ranging from +575 to +600.msl where it overlies dense gla~ial l~kebed deposits consisting of sands~ *~ilts, and clays.

The 1 akebeds extend down to elev at ion +540.

~nderlying 'the 1 akebeds*:.

is a ~ery dense ground moraine. (silty, sandy, gra~el'ly clay), which is continuous to bedrock at an elevation of about +445~ **The. lakebeds *hav.e p'.

  • wave seismic velocities ranging from 5000 feet per second to 5800 fps; and*

the till has P wave velocities ranging from 6400 fps tci 7000 fps (Weston, 1966).

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-~----*---**-- **-*--** --

    • --*--*-~--

The bedrock is Coldwater Shale of Mississippian age (325 to 340 million year~ before present).

The Coldwater ~s a compact, blu~,

gray, or red clay shale* with P wave velocities on the order of 10,000 fps.

The major structures of the plant are founded on engineered fill

  • or on the dense lakebed soil (CPC, 1966).
  • Cone l us ion Based on the information provided by the licensee, the acceptable conclu-sions of Topics 11-4.A, ll-4~B, and il-4.C an~ the evaluation above, we
  • conclude that.the information used for dev~loping site specific spectra is adequate and have re-affirmed that.local gelogic and seismologic phenomena. will not affect the planL

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REFERENCES

      • ~**..
  • ~

Bechtel Corp.~ 1965, "Foundation In;estigation for Palisades Nu~lea~

. Plant, South Haven, f*:ich.", Prepared for Consumers Po\\*1er _Company*

r~ovember. 1965 Cohee, G.V., 1965, "Geologic H1story of the Michigan Basin," Wash.

Acad. Sci. Jour. Vol. 55, pp. 211-2~3 i

Consumers Power Company, 1966, "Facility Description and Safety Analysis Report", Docket No. 50-255, June 1966.

Denise, R., 1978, "Preliminary Safety Evaluation of Faulting in Lake Michigan"~ October 11, 1978 letter to B. Grimes

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lardley, A.J., 1962, "StructuraJ Geology of r~orth America", Harper and Row, New York, 743 pp.

  • Fenneman, N. M., 1938, "Physiograpt.y' ot Eastern United States," McGraw Hill Book Co., New York, 534 pp.

Harding, T.P., 1974, "Petroleum Traps.A.ssoci ated with Wrench Faults,*

Am. Assri. Petroleum* Geologists Bull., VoL 58, No. 7, pp. 1290-1304.

. "-~. '..

~.

?~**>0;-; __ :~***:'_~ - liough; J. L, R.A. Davis and G.S. Keeley, 1967, "Lake Michigan Hydrology.

_ \\./i.7. *.

r:ear Palisades Park, Michigan," Report to Consumers Po\\'1er Company.

...... ~:

  • ~::~;);***;....

Raymond International, Inc., 1965, "Palisades site, site. 'investigationu *.

for Consumers Power Co ** NovemLer 4, 1965. * ** * *

'.~ -

Reiter, L., 1980, "Initial Review and Recommendation for Site 5pecific

~*

Spectra at SEP Sites," transmitted by memo June. ~2. 1980 R. Jackson -

._.;./::::.',/:i

  • ~~-=-..
    • to D. Crutchfield..

USAEC, 1967, "Safety Analysis by the Test and Power Reactor Safety 6ranch, Division of Reactor licensing in the f*~atter of Consumers Power Company Palisades Plant," Docket No. 50-, 255, Feb. 7, 1967.

Weston Geophysi.cal Engineers, lnc., lg66, "Seismic Sµrvey, Michigan," prepared for Bechtel Corp. April, 1966.

South Haven Wisconsin Elec.tric f'ower Co. (WEPCO) 1978, "Preliminary Safety **Analysis...

Report, Haven Nuc-lear Plant, Units. l an~ 2, n Docket No. Is 50-502/503.:/'

Wold, R.J., 1980, "Review of LaJ.:e f*~ic.higan Seisr;,ic Reflection Data"~ USGS Open l~.:......

File Report 80~902.

1

.* ~-/

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SEP SAFETY TOPIC EVALUATION

. PALISADES NUCLEAR. POWER PLANT UNIT 1 TOPIC.U-4,B, Proximity of Capable Tectonic Structures in Plant Vicinity Introduction In order to assure that the expected ground shaking characteristics will not endanger th~ safety of plant facilities, an evaluation should be made on the characteristics of local geological features.. The scope of this topic evaluation is to review the existing information provided by licensee and to identify new features such as capable faults, etc.

Review Criteria

1.

Standard Review Plan Section 2.5.2

2.

Appendix A to 10 CFR Part 100 Related Safety Topics and Interfaces The related safety topics are II-4, II-4.A and II-4.C.. The fesults of this review topic may affect the conclusion drawn fo_r these topics, i.e., site specific ground response spectra developed for the SEP plants.

Evaluation The geologic and seismic data reviewed indicate ~hat there are no tapable structures in the vicinity of the Palisades site. _The _Michigan Basin, although several hundreds of million years old, is relatively undeformed~ Folds and fa~lts have been mapped in the Pa]~o~oi~ rocks of the basin, however; For.

example; several minor northeast plunging folds have been mapped in the site

  • vicinity b~~ed on oil and gas drilling wells in southwest Michigan.

These

  • folds have closures in Devonian strata of 60 to 80 feet.

Movement is interpreted -

  • . to have occurred in post Devonian (younger than 345 million years) and to have been ~ssociated with subsid~nce of the Michigan Basin (Cohee, 1965).

The nearest i~ferred large.scale faulting is the.Takonsha and Albion-Scipio frends* located about 50 to 60 miles east of the site respectively.. These postulated faults strike ~orth northwest (Harding, 1974); and affect Ordovician

,rocks (500 to 430 mybp).

There are other structures 1 i ke these within and

. around the Michigan Basin.* All of these structures are considered by the

. staff to be post Devonian to pre Pleistocene (345 mybp.to 1 mybp).with most

.activity occurring in the Late Paleozoic. *This conclusion is based on the 1observation t_hat all Paleo_zoic rocks are affected. by the structures, with Mississippian being the youngest; and there is no evidence that the faults cut Pleistocene sediment.

  • .During* the staff review of the hisconsin Electric Power Company's (WEPCO).

~a;en ~ite se;eral sources of seismic reflection data indicated the possible presence of NNE and NW trending faults beneath Lake Michigan. The staff

,re;ie~1ed these and other data gained during WEPC.O's in*~estigation and studied the seismicity of the Lake Michigan region.

Based on that review

    • 1(memo from R. Denise to B. Grimes, October 11,.1978) the staff concluoed that (1) faulting within Paleozoic strata in the Central Stable Region is widesp~ead.
  • in rocks that are Mississippian age and-older (320 mybp), therefo.re, the.

disco;ery of* faults, or the inference of faulting ~ithin ~ississippiari or __. -.

  • older units beneath Lake Michigan is not surprisi,ng; (2).. no historic earthquak~
  • epicenters have been plotted in Lake. r*~ich,igan, and (:;) the faults be~eath lake Michigan are geologically old: and pose no potential to increase the

~arthquake hazard of the region~

.*~->

~old (1980), based on the examination of the available seismi~

reflection profiles in lak~ ~ichigan identifie~ faults beneath the northern half of Lake Michigan, which he attributes to iollapse structur~s formed by the dissolution of salt within the zone*of outcrop of Middle Silurian _(445 mybp) through t-:idale Devonian (360 mybp) stra_ta. The closest approach to this zone is approximately 30,mi"les \\'1est of the site, and the strata that outcrop fn it dip to the east and lie several thousand feet beneath the Palisades site. Therefore, collapse that could affect

  • grouna surface due to dissolution.of salt is not a hazard to the Palisades site.

It *is likely that the Paleozoic rocks in the site vicinity contain unidentified,

. *minor faults. There is no evidence that these faults, if they exist, affect the overlying *glacial deposits.

We conclude th~t there are no faults within the site region that could be expected to localize earthquakes in the site* vicinity,* or that could cause surface displacements at the site* *.

Conclusion Based.on the information provided by the licensee and the evaluat.ion described

~

above, we conclude that there are no geologic feature~* that present a hazard to the continued safe operation of the Palisades fac.ilities~

)'

~,.

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REFERENCES eechtel Corp., 1965, "Foundation Investigation for Palisades Nuclear

. Pl ant, South Haven, l*:ich.", Prepared for Consumers POl*:er Company f iovember, 1965 Cohee, G.V., 1965, "Geologic lhstory of the Michigan Basi_n, 11 Wash.

Acad. Sci. Jour. Vol. 55, pp. 211-2~3 Consumers Power Company, 1966, 11Facility Description and Safety Analysis Report", Docket No. 50-255, June 1$66.

.Denise, R., 1978, "Pr~liminary Safety Evaluation of Faulting fo lake

_Michigan", October 11, 1978 letter to B. Grimes lardley, A.J., 1962, "Structural Geology of Uorth America", Harper and Row, New York, 143. pp.

  • Fcnneman, N. M., 1938, *"Phys iograpt.y ot Eastern United States," McGraw Hi 11 Book Co ** New York, 534 pp *

. Harding, T.P., 19i4,. "Petroleum Traps Associated with Wrench Faults,*

Am. Assn. Petroleum Geologists Bull., Vol. 58,.No. 7, pp. 1290-1304.

  • Jiough, J. t., R.A. Davis and G.S. Keeley, 1967, "Lake Michigan Hydrology

.. r.:ear Palisades Park, Michiga,n, 11 Report to Consumers Po\\*1er Company.

Raymond International, I1,1c., 1965, Palisades* site~ site* 'in~estigation"*

for Consumers Power Co ** Novemuer 4, 1965.

Reiter, L, 1980, "initial Review and Recoma1endat ion for.Site ~pecific Spectra at SEP Sites,a transmitted by memo June. ~2, 1980 R. Jackson *

\\o D. Crutchfield..

USAEC, 1967 * "Safety Analysis by the Test and Power Reactor Safety 6*ranch, Division of Reactor *Licensing in the f*~atter of Consumers Power Company Palisades Plant.~ Docket No. 50-, 255, Feb. 7,.1967.

Weston Geophysical Engineers, lnc., 1966, "Seismic.Sµrvey, South Haven Michigan," prepared for Bechtel Corp. April. 1966.

Wisconsin Electric f'ower Co. (l~EPCO).1978, "Preliminary Safety.-Analysi~... -

.. Report*;- -Haven Nuclear Plant, Units 1 and 2, ~* Docket :No *. *.s 50-502/503."'.

Wold, R.J., 1980, "Review of Lake mc.higan Seis111ic Reflection Data"~- USGS Open.

File Report 80-902.

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