ML20196G340
| ML20196G340 | |
| Person / Time | |
|---|---|
| Issue date: | 02/28/1995 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20196G123 | List: |
| References | |
| FRN-57FR47802, FRN-59FR52255, RULE-PR-100, RULE-PR-50, RULE-PR-52 AD93-1-103, NUREG-0800, NUREG-0800-02.5.2R3D, NUREG-800, NUREG-800-2.5.2R3D, SRP-02.05.02DRF, SRP-2.05.02DRF, NUDOCS 9705160075 | |
| Download: ML20196G340 (27) | |
Text
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m 1 U.S. NUCLEAR REGULATORY COMMISSION l l
2 STANDARD REVIEW PLAN 2.5.2 February 1995 l 3 VIBRATORY GROUND MOTION
Contact:
A.J. Murphy 4 SECOND PROPOSED REVISION 3 (301)415-6010 5 REVIEW RESPONSIBILITIES S
6 Primary - Civil Engineering and Geosciences Branch (ECGB) n k .. ,
- f 7 Secondary - None ,
s -
A v
8 AREAS OF REVIEW - e 3
ns; v
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9 The Civil Engineering and Geosciences Branch ' review coders the seismological, ,
10 and geologicalVyb^oji~SfdsW?ihdipshfRhh u . - a'il investigations carried out to p m.,, m.
11 es tabl - .rm. _ne the-escderat4en-f*Ethe 's'afe shutdown earthquake -.-
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. ev.y syyg, i rounyd.v ,
12 si6ff6.d (SSE) and the Operating ba:i: d:Nhduhke(0"E)forthesite. The-safe 13 shutdown carthquake i; that carthquakh'.thdt i: b :cd upon an evaluation of the 14 : ximum carthquake pctential ~ con:Idcrihg the regional and local geology--and 15 cei::clogy and :pecific chhractchist4es-ef local ;ubsueface : teri:1. !t is s .#..
16 that carthquake that produchiths ::ximum tibratory ground act4en-fee-wh4eh 17 safety related structurc:, :ystem:, and component: arc designed tc rc :in 18 functional . Thelop,erating b;;i: carthquake is that carthquake th:tr
~
19 con:idering-the regicnhl and local geclegy, sci :clogy, and-spee4Me-ehaeae-20 teristies-cf local hubsurface ::tcrial, could rc;;cnably be expec4ed tc affect o . o 21 the-plant-s4te-during the operet4ng life of the pl:nt; it is that carthquake e
This standard review plan is being issued in draft form to involve the public in the early stages of its development. It has not received j complete staff review and does not represent en official NRC staff position.
Public commente are being solicited on this draft etenderd review plan, wich is part of a group of drafte of regulatory guides and standard review plan sections on meeting proposed emendments to the regulations on siting nucieer power plants (59 FR 52255).
Commente should be accompanied by appropriate supporting date. Written commente may be submitted to the Rules Review and Directives Bra -~h, DFIPS, Offica of Administration, U.S. Nuclear Regulatory Commission, Weehington, DC 20555. Copies of commente re( : , ed may be examined et the NRC Public Document Room,2120 L Street NW., Weehington, DC, Comments will be moet helpfulif received by May 12, 1995.
l Requeste for single cooies of this etenderd review plan (which may be repro.iuced) will be filled while supplies last Requeste should be in writing to the U.S. Nucteer Regulatory Commission, Weehington, DC 20555, Attention: Office of Admiriistration, Distribution and Mail Services Section.
9705160075 970422 PDR PR 50 57FR47802 PDR
l 1 that producc: the vibratcry ground =ctica fcr which thc:e feature; cf the j 2 nuclear pcwcr plant necc:: ry for ccatinued operation withcut undue risk te -
3 the health and : fety Of the public are designed tc remain functional. T-~Hs ~ .
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11 The principal regulation used by the staff in determining the scope and 12 adequacy of the submitted seismologic and geologic information and attendant 13 procedures and analyses is si.ff_li.h_i_f_0d._itG6._30i_G._RIPif.M._f_00$m.i(Mi}? .
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14 Additional 9tManee M_(6.filif._l35 (regulations, regulatory guides, and reports)
_ m 15 is provided to the staff through References 2 through 8 9.
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19 The,se]nvestigat' ion's' describe, the ss, ism' icity ,of'the, site region' and;the 4 20 .EoVrel'at i 6'n'"o
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27 Specific areas of review include seismicity (Subsection 2.5.2.1), geologic and 28 tectonic characteristics of the site and region (Subsection 2.5.2.2), correla-l 29 tion of earthquake activity with gcclogic structure cr tectonic province:
30 sej sm,i n, _n.mcssources (Subsection 2.5.2.3), maximum carthquake potenti S
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l 2.5.2-2
l 1 The geotechnical engineering aspects of the site and the models and methods l 2 employed in the analysis of soil and foundation response to the ground motion 3 environment are reviewed under SRP Section 2.5.4. The results of the 4 geosciences review are used in SRP Sections 3.7.1 and 3.7.2.
5 II. ACCEPTANCE CRITERIA 6 The applicable regulations (Refs.1, 2, and 3) and regulatory guides (Refs. 4, 7 5,6,j@3)andbasicacceptancecriteriapertinenttotheareasofthis 8 section of the Standard Review Plan are:
9 1. 10 CFR Part 100, " Reactor Site Criteria" (Ref. 3). This part describes 10 jysfj]) criteria that guide the evaluation of the suitability of 11 proposed sites for nuclear power and testing reactors.
12 M6pMdjlsitM30g2s 10 CFR Part 100, sys5Mjsia@[SEM]Qll)Jj 13 @MQ Appendix A, "Sct=ic and Cec 1cgic Siting Criteria for Nuclcne 14 Pcwcr Plants." Tht:0 criteria describes the kind; cf geologic and ;
} 15 seismic information needed to determine site suitability and identify 16 geologic and seismic factors required to be taken into account in the 17 siting and design of nuclear power plants (Ref. 1).
18 2. 10 CFR Part 50, Appendix A, " General Design Criteria for Nuclear Power 19 Plants"; General Design Criterion 2, " Design Bases for Protection l 20 Against Natural Phenomena" (Ref. 2). This criterion requires that l 21 safety-related portions of the structures, systems, and components 22 important to safety sham be designed to withstand the effects of 23 earthquakes, tsunamis, and seiches without loss of capability to perform 24 their safety functions.
25 3. 10 CFR Part 100, "Reacter Site Criteria" (Ref. 3). Thi: part describe:
26 criteria that guide the evaluatica of the suitability of prepc cd site:
27 huclear pcwcr and test 4ng reacters.
28 4 3. Regulatory Guide 1.132, " Site Investigations for Foundations of Nuclear l I 29 Power Plants." This guide describes programs of site investigations l 2.5.2-3
1 related to geotechnical aspects that would normally meet the needs for 2 evaluating the safety of the site from the standpoint of the performance 3
of foundations under anticipated loading conditions, including in.4 bv 4 earthquake. It provides general guidance and recommendations for 5 developing site specific investigation programs as well as specific 6 guidance for conducting subsurface investigations, including the spacing 7 and depth of borings as well as sampling intervals (Ref. 4).
8 5 f. Regulatory Guide 4.7 JPf6psisdlRdylijjaj2HDG900s)', " General Site 9 Suitability Criteria for Nuclear Power Stations." This guide discusses 10 the major site characteristics related to public health and s'afety wh4eh 11 JHi{ the NRC staff considers in determining the suitability of sites for 12 nuclear power stations (Ref. 5).
13 6 15 . Regulatory Guide 1.60, " Design Response Spectra for Seismic Design of 14 Nuclear Power Plants." Th4s-guide give: onc =cthod acceptable to the 15 NRC staff for defining the rc: pen:c spectra corrc:pending to the 16 egeeted-scximum ground acceleratica (Ref. 5) . Seealso$566thsd
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24 ChiFi(tdriiatf6n of Seismic' Sourdes and De' termination,of Safe Shutdown 25 Earthquake Grdund Motion," is being d6veloped to describ'e acceptable 26 ineth6dologi'es'for' determining the co'ntr'olling edrthquakes and SSE grodn'd )
27 mott'on for nuclear, power plant s'ites, 1
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28 The pd6M.jii.k.,,.~~.w., geo .lbj.{,.me-,diseM, mi,.ne ciconside., .~ ra t:in onl ~.>yf~o., gs.,. ..~itetsu[fibM. i t.ev pan d 1 29 y'_sb_l_i._y_IE_Eih_d primary required investigation arc described in 10 CFR Net-lMr
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30 4n Sectica IV(a) cf Appendix A (Ref.1) The acceptable precedure; for 1
31 determining-the-seismic design bases are given in Section: V(a) and Sectica l 32 VI(:) cf the appendth MthsM6pbsid!SestisG00/231tah10TCFRNtM00?l 33 DF.i.f tIR. iyU.l st6Fy.T G6. 1 de?. .DGC1. 0327. (Re.- f..M 9 )7sT bsi ni~dsfel dpfd it o,~R,oVi
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1 $Midd[g@iM~op))jjist])st}5M The seismic design bases are predicated 2 on a reasonable, conservative determination of the SSE :nd the CBE. As 3 defined in Sect 4cn 111 cf Appendix A (Ref.1) to10CFRPart100,the}@SSE 4 :nd OBE arc !s based on consideration of the regional and local geology and 5 seismology and on the characteristics of the subsurface materials at the site.
6 :nd Orc de:cribed in tc :: cf the vibr:tery grcund =ctica that they wculd 7 produce :t th: :i te .- No comprehensive definitive rules can be promulgated l 8 regarding the investigations needed to establish the seismic design bases; the 9 requirements vary from site to site. l l
10 2.5.2.1 Seismicity. lafdmeet4egtherequirementsofpfdp6]Is3[ih l 11 Reference 1, this subsection is accepted when the complete historical record l 12 of earthquakes in the region is listed and when all available parameters are 13 given for each eartquake in the historical record. The listing should 14 include all earthquakes having Modified Mercalli Intensity (MMI) greater than l 15 or equal to IV or magnitude greater than or equal to 3.0 that have been l 16 reported in-cll tectonic province: Will]i;iQis[6]i60fdhi, any parts of which 17 are within $20?G (200 miles) of the site. A regional-scale map should be I 18 presented showing all listed earthquake epicenters and should be supplemented ,
1 19 by a larger-scale map showing earthquake epicenters of all known events within i 20 80l M (50 miles) of the site. The following information concerning each 21 earthquake is required whenever it is available: epicenter coordinates, depth 22 cf focus, date, origin time, highest intensity, magnitude, seismic moment, 23 source mechanism, source dimensions, distance from the site, and any cong- l 24 motion recordings (sources from which the information was obtained should be ,
25 identified). All magnitude designations such as m,, M , M , M should be t
26 identified. IgthETCirijfill:a&dj Eastern?Unithdsstitssi;jilatiVslj3}titli 27 jjif6iustM)ilifiiSblejW61nisisifsdF(fd6thsilfsi:ge$15ltpiR;safthjdiks 28 SHds%jt #iiisylbs[appf0pf{stsi;t$felp[66 Tint ~esslity])bssrfati;66R(dssd[jpt))hi 29 66@hg*.Ms fiffsEtsHjiles{imitEniahniisde;s{sfdiIt'6fif ev;shQi(bl5 M Rifis 30 34 :nd 35 30 ahdj[1]). In addition, any reported earthquake-induced geologic 31 failure, such as liquefaction {ishindih@ils6ssimifsiidehts[6fhlifgs 32 Rs@thhjj{iiFthisikss);, landsliding, landspreading, and lurching should be 33 described completely, including the estimated level of strong motion that 34 induced failure and the physical properties of the materials. The
! 35 completeness of the earthquake history of the region is determined by 36 comparison to published sources of information {e+r-Ref . O through 13).
2.5.2-5
1 When conflicting descriptions of individual earthquakes are found in the 2 published references, the staff should determine which is appropriate for 3 licensing decisions. 4 M 2.2 Geoloaic and Tectonic Characteristics of Site and Reaion. In 5 meeting the requirements of References 1, 2, and 3, this subsection is 6 accepted when all gee k g4e-structure; within the region ond tectonic cctivity 7 sifjsisij[53HFjs3 that are significant in determining the earthquake potential 8 of the region are identified, or when an adequate investigation has been 9 carried out to provide reasonable assurance that all significant tectonic 10 steuetures jisliii((jpiifjji have been identified. Information presented in 11 Section 2.5.1 of the applicant's safety analysis report (SAR) and information 12 from other sources {c.g., Ref:. O ced li thrcugh 18) dealing with the current 13 tectonic regime should be developed into a coherent, well-documented 14 discussion to be used as the basis 'fsf characterizing the earthquake-15 generating potential of Mismfyourcss) the-ident4fied geolog4< structure 16 Specifically, each tectenic-province seismidyshbrys, any part of which is 17 within NO M (200 miles); of the site, must be identified. The staff 18 interprets is{sii6 tectonic provinces to be regions of uniform corthquake 19 potent 4cl (scismetectonic province:) saisijisltyl(saiisjffeqUiriEy7df}6sdiffsnEs) dJstbiiMfE6s3hWJisjisisjfflofittieN6fr6liisdisiy?aPsi. The proposed 20 21 is;15iii6 tectonic provinces may be based on seismicity studies, differences in 22 geologichistory,differencesinthecurrenttectonicregime,bFiothsr 23 tistbni[Esusidefitiuss?et+. 24 The staff considers that the most important factors for the determination of 25 [ijs M j6HFEis tectonic provinees include both (1) development and 26 chr. Octeristics of the current tectonic regime of the region that is most , 27 li kely reflected 4n-the neatectenic: (fest-44+ccene or obcut 5 infthe j 28 QBalsFdif)3sFl6f(ipprofiist;ely[t6elast"2 million years and younger geologic l 29 history) and (2) the pattern and level of historical seismicity. Those ) 30 characteristics of geologic structure, tectonic history, present and past 31 stressregimes,andseismicitythatdistinguishthevarioussei_smiCsonFces 32 tecton4c province; and the particular area: within those s6decis peevinees 33 where historical earthquakes have occurred should be described. Alternative 34 regional tectonic models derived from available literature sources, inelud4tuj 35 previous SARs-and NRC staff Sofety Evoluat4en-Repeet: (SER;), should be 2.5.2-6
I discussed. The model that best conforms to the observed data is accepted. In 2 addition, in those areas where there are capable fault: ,fisf65@sjWEii,the 3 results of the additional investigative requirements described in 10 CFR P;;4 4 100, Appendix A, Section !Y(:)(8) (Ref.1)., $@sEfi6MK51{ must be 5 presented. The discussion should be augmented by a regional-scale map showing 6 the tectenic provinces IEfssifi5;UF6Ei, earthquake epicenters, locations of 7 geologicstructuresandotherfeaturesthatcharacterizetheseTsEMs66Msi. 8 , :nd the lceat4en cf any capable fault:. 9 2.5.2.3 Correlation of Earthauake Activity with sifsi F sEOR is 10 Cec 1ccie Structure-cr Tectenic Province:. In=ceting16]#s{therequirements 11 pfdp6iedDhefReference1,acceptanceofthissubsectionisbasedonthe 12 development of the relationship between the history of earthquake activity and 13 the geclogic structure; cr tectenic prcvincc: isfsmjfi6ddss of a region. 14 The applicant's presentation is accepted when the earthquakes discussed in 15 Subsection 2.5.2.1 of the SAR are shown to be associated with either geclogic 16 structure cr-tectenic province iijiiij f s6s M is. Whenever an earthquake 17 hypocenter or concentration of earthquake hypocenters can be reasonably
}
18 correlated with geologic structures, the rationale for the association should 19 be developed considering the characteristics of the geologic structure 20 (including geologic and geophysical data, seismicity, and the tectonic 21 history) and the regional tectonic model. The discussion should include 22 identification of the methods used to locate the earthquake hypocenters, an 23 estimatjdaSftheiraccuracy,andadetailedaccountthatcomparesand 24 contrasts the geologic structure involved in the earthquake activity with 25 other areas within the teetenic province sifim6tIEi5sM)fdy3KEs. Particular 26 attention should be given to determining the capability fihiH2ylihdDjiliH6f 27 'idQ?jty of faults with which instrumentally located earthquake hypocenters 28 are iriay]bs associated. 29 he-p.*c:entation shculd bc cugmented by regional :p , 011 cf the ::me scalc, 30 :hcWing the tectcMc provinces, the carthquake epicenter:, and the location: 31 ef geclegic :trueture: :nd censurement: used to deM nc province:. Acceptance ,
.-~ 1 32 of the proposed tectonic pecvince: selsm j _cisources; is based on the staff's '
l 33 independent review of the geologic and seismic information Efeiestidgjys 34 SpplTEshtEshdisisj hbli{jRthe[sdjinHfi E{lj fsfitsfi.] 2.5.2-7
1 2.5.2.4 Madmum Earthcucke "ctential PrMabilistiFSeisisiiFHiihd 2 An.a l_ysi,s4P$HAb_an_d Con.t_ro11i=n._E_arn_ouak_es_4CEl. a In sceting the requirement + 3 ef-Referen,_.a 1, . +..k..4. e. . . .bsec +. 4. n.n. . 4.,.,
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6 been :::c :cd and when the carthquake-that would produce-the-madmum.-44bratort 7 9r,ound-est4en-at-t u.~,, e. 4. +..,. u.as-b-- . . _.. . _a n s_, m. .m. 4..~. A. r. ~.u nm..~,,u,4.m..~..m. m e
. m._a 4. .u,,..
8 earthquak^ '.., +.'~^ '...3- ~+ .^
. . _, .. + ', ,^ ua '~^ ". . ". . +._ - . . _~ ' , ,^,n a b. '. ", '.~^ . ,,^~.+.^_d
. r. +^~^"e
. . , ,m _
9 on-a-geelcn 4. 3 e. e. +. e.s
. _ .s .e + m et. 4. n. . 4,,~k a _e.... .an.t-teeten4c m.a.yn 4. .m..n . . t_' _a n i. n n 4. .,-oe 3_
10 s . '. ~..,n^. '. .,
. ^, ^ 4ea', ^ ". i. . den _- ^ .~' ", ".. .. . . . . +. .. .. .- M ~ .. ^. .' r4hquak ^ '. . . ^ ,, +. '. . . . . ". , "~-
11 mad mum-h4 ster 4: carthquake. Ear-thquake: assee4eted-with-each-geoleg4e 12 streete,a . , . , +eet , . ,, a. .. . r.,. ,, . 4. nee-must-be-4 den +. 4. c. 4_a .
- n. v.. u. ~,..., . , ,. . +. u. ,, ~.
. . . . y .,.~o ,, 4. ,
13
,. .e,m.n,~ e4,+nA ,
u.. t. +.. L. . a _n 3 n 1, n ,, 4. .e 3 ,+m,na.n.n,
. _ .. . . a ,,_
+. k.
M u-~...
. ,. m.. _ n A 4 bl. a _n , a. . k..y,, o. ., bm n. +k,_,+
14 esuld n.e_.e .. n m,.. a n. +k..,+. c +. w.s _. . . e + n.ee. n
- k. ..
. a n 1. .A .~ L M a&nA,m.+ , 0...n 4. n.n3 I. n.
. ,+. n, e_e .n. nnt c,e m amp,.n., +ka +
r..a.nm. ., ,. , c,
.. , ~ .t nr.
15 a. n o. . . c. i. e , ., +_ .. s +J~. a r. ., .... . , + 4. n , - fa . ... .,+ 1. .,..3..
.,,, + k. ,
.3 16 "'+
..... ,, " 4,r- ..'.t , . "r".".
. . ^ ' . ^ .. + . ' . , .v y- +. ." . ^ . , -_ ,. ~. ^. . . ^ " . . ,
. ....d ^
_. ". .'.quak . . '. 4. +. ^, , ," 17 I n.u . ,n .~ v .n a f, e . i. n, +hr.n . . .k. _,SS\. ur,. n,. e. _A n m, +n .Aetere.mn 4,~ +ka s. k. . ,. +. _. e . n n 1. A aseue-en 18 f n.
.. .. ..~ m...,.4.~..m...
n . e
. e,nA
_ . .4..k.1. n .n . e.+ ,, k,a n. ., k a theen.~( ., n.1. kn +kn
. . +. .e, +k...,+. e..,
19 n
.s e.. e k. ..n n,u.n. n.
.. . e.. e,
. .n. .._n A +.. n..~ s a .b.i.
. n , .,~ e.,taf+-aece ts 20 eensc . ". .". '. ". .- ". .' ', _" .~., ', .' ., ^_ ,d, , . , '.'.".-.4.^ ex r.- , *. .~_^
. . . - 4.. .'.'~^ , .^^4.^.
., . ....d.. ., r .~. 4. #. 4. ^.
21 e..n n. e 4. _A n m., .. +. 4. n, n.s-of-the-ear thqu. a k n , k, e,. e,..
+ n..,m.u ., n..A
. n an1, .n r,. 4, .e .L. 4.. c, ,, + n, m. ,u, a,
, r. . ~n .o. na..m.n.n.n. .n. +.
+ka +ka n , ,wn ,
. e,. .,~
- e. n e 4, ., t n_A u. 4. +. ,
22 .,~ f. .% u1+. e. . . U.._ k a m..n ._ s. .%. wJ. . Ln a. c. . . . k.
. +._n .e4.n n. 4. e n e. r .n u. 4. ,n~ e n ,
23 the--largest historic carthquake-w4th4n-the-preMnee-shculd be identified. i l 24 '.-^~^4....~'.
. .~ r .,
sh^,, ".. '.. d. . ' '.. . - ^.~ '^ r-.^~^.+_^d
.. #. .^ . ..~ +'^. . ~^ ., t ,, i,,.- . i. '. i, ^ - . +. .^ .' ". '. . s-"
_, . ak(' . I 28'D vi
*Me-9Fou n..A u.a. . m. e. .on n ,+
+kn
.n. e.
n
- 4. +m e k ,u on. 1. .A kn
.. n
. .A
- u. .,1. . .dt n.uA .s e...ne . m. .nn. y .ppen 4.
1 vr,n u t. ., t .a e.~n 4, c, m.mt..e l 1 aren,+, ,nA +g,+ n
. ., + b a u a.L ant-26 energ,u + m.,. n. . em t e r 4. n..n.
.my, H ... .rvu . c. ., n. m.
m 4. n. n
. 3 . . h. . +bn ...n. .ax. ,o . Jt nm.m
,, , m.
...m.
c+ +m n e +..irT n n t e ny.. w n u,4. ne . n .n.e e n.Ps 27 0 c, e .n .e 4. u, +..u nA u. 4. +.n k .n.ek
.n n y..a n i. .yn n i. .e ,. vn. a .m. un 4, +..b. . n ..., e k.
i i 1 af e ., e..k. a J n_ +n I nn4nt. . T . i .n e. .n c +. .nne.n. v f, 4.-. k.. n..e u 28 a +v +. k. i .a y.vu i yy + m.s i e. +. .. o.evn n e, y n e. .n Yt i . e n .. .i .+. k. a e 4. +. .c. . I 2 n 29 b. .ri
. m. .A n.... c e m 4y. n + 4. .a n n 4, ,e n y e..n o. 4.. A.n Aa-t i . e .n.s. k.e.n .e + 4, av.n, S.Cr.0.f. .
\
y
+ ,6-m 30
'L
'*rfte-eaYT + Ln aR. f ger f +k.,+.
i on o FCu.enAn.. e k .n vii -invn r.i t. e,
- n. u. .n m..a
- s. u. 4.. k m,u ttt. ,o y n e. .un u n. A. m. ~n . + 4.n.n n n One 31 a +. +. .~ k a. _e.. 4,. + n e. k. . ,u, 1.. A_ kn _Aef 4. n.n.A . . T. T. A . 4. f. f. .a m.a
.. n. +. nrn, +m.n n. +. 4. .,1 _ ,.a.y. k. n a.a .m ., u.. .n, .o 1.
. A 32 produse-the-eest sc"cre ground-set 4en in diffement frequency band:, these 33 earthquakes-should-be-specified. The descript4en-of the potential 34 earthquak^'",f g. ' , , +^. . i. nt '. ". d. ^ " . . ' . ^ . - ' Meum-Wm^ ~, ",," ^. . ~ 3 . ". . " dn^ . . . " . ". .le n~ n . .
2.5.2-8
1 d4stence frc the :::umcd locat4en of the patenti:1 carthquak:(:) to the site. I 2 Be-st+ff-4edependently evaluate: the site ground mot 4cn produeed-tyy-the 3 4argest caethquake-asscciated with each geclogic structure er tecten4e 4 province. 5 Aseept.ance of the-desee+ptica of the potential that .;culd produce the hygest J 6 ground motion at th: ;ite is based on the staff': independent analy i w ! l 7 The' staff will,rbview th~e applicant's probabilistic seismic hazard analysis; 8 . including'the " underlying
- assumptions and how the results of the site 9 in^veitigattiins an'd" finding ~s of'$ections' 2;5 2 2 ahd 2 5'2 ,. ... 3 'are;~used to u'pdate l 10 th~e ~ existing so'u'rces in' the probabili~stic seismic hazard analysis, how thef
^
11 are used to, develop additional sources, or how they are used to develop a new 12 data.zbaieg 13 ThsMsffjjjllfperf6rm}anlihdependsntLevhluation?of tijs{esrthqssksipotehtlil 14 a5;sosi st6dMi thibichfie t smi? iod rce;.sthitT eoul d ?sffsit;;? thsTsi te M Thei; stsff 15 Elll{eViliistiithB2 dpp1]ds;ritN; con _tE6111hil;6aEthil uskisib;s ssdlohMst6ftls~alissd
} 16 pv.il. 5.6_:s_st_im_id.i_ti_fM_.nE.t.
hT. s.E. .~6_ Va..l d. st.i. ary._th. i. _c_'os...t.F.. 61._1.is. g? ssF_th4G_i. ki.s3..._dri_e.aE_li. l v.sv.y y,.y v.v ..,.v.n >n....~:.;.;.. -r.. ...w . ..,n., - n .. 17 sourcegarela .:.w ~ .n ms.ct l < , n: . .eastiasMm argeyan t,n e,s.r.. .. ;maximumi..
..y h:.ivstor c.: ear.. <. ,th<q.:n :.:k :.uaeejiTheista:ff
- ..:.iv...s.n.:
+v -
~.,,nv .,
a and;.,..,,n.. t.., e d. ,,., 18 trev w i l l4, . .,. .i+e,w,.,..; t h., ..ge , .,t r.: . l. .~ . . w.. v...ol ing;earthq... .. k . ,..,.,n.:...ua esl 3 e con :.,d. yng v.asroun so.cin. e
. moti..wn. ..,. ,:....onstatith.r 19 lii tMdeBisdllfffWins]sppljijsht} s {pfobhbi.1;i[sfl(haia Fd[ansly51's[t'o35;is;d fs 20 thitithsylsrsTe1.t.hl5fEonsi stin.t Vi thithsfcoht f61,1. i ng (ea f thi iakesjyrouhd 21 sotj bn sTUssdfin;il i censiss ; o fj('a)fotherfl i cens ed ( f acil i ti ss? s t7 the [si th M(b) 1 1
22 psifbHlip{sM6rMKp]ihti sl i cen sedfi nfsisil sK sei smogeni c ;Lrspi on s[6Fths 23 Feas5ns[thiy[aRh6.t36nsistintlAre[un;dersto6dp l I l
. -.v. .. , .e... . - e v s. - v s 24 Th.v.wy me .wl, v s .wweqappjeant's szpro
.ssm..sv.v bsbilist. .s.v.icTanalysis{s i s.. . ".. cons.
vs. ..n s.v .,i d .s.e red <.vacceptable [i,ff.it f'. bilows.u . 25 t helpF;6ceddFsysp6Ysd $n!Appund iftf 6flDGZ10323Rs f ? 9)1 3hb[i dc.6fphrit 16h 26 o. f ~f. sidi fifif fil t'eT.. i. iiV. i.st. igs. flohs'into "the' probibil. i stief analysi s?.fs v- - .- . . I
\
27 considsysdictspltablslifLitifollowsLthe' procedure [obtlinedlinAppendixLELo.f ; 28 DG1032Tind3Rhonsistshtiwith"thelreviewifindingsof'Section's2;5?2.2and 29 2:5;?.{3; , 30 2.5.2.5 Seismic Wave Transmission Characteristics of the Site. I 31 IEthi]PSHATpFociduFsidsicFihsdi.1hTDG?l032l(Reff 9),Jihe'controllihd 1 32 ssrth.ilii. kssTife'det.er.m. thsd. ' f6pT.ssts. ilPof. ' hip 6thstichif rbckL conditio6s.1T6s i 2.5.2-9
yf ff #% . . ARd & f NQ-Q . . f' -
** f *f U- ^5 R ffEPG Q -
I r s e am'p'.21 ushv -
' '/}f.*{/aon'w'ff.y.*,'tst.v."u'P*/'
'+.we v - io.u m m.an d..w*.}v#'s a'.'r'*? '?)}.Q'?f/.**fe v
Jrme
'G"**f9*,%*.*d*,
aw.. .x. xe-ui p.e.vmLx awn i .. ev 'e r-ari.
.'i, est.*.?' .GF.ms.
.w ku. .wn.*a'cu'ct7 r."a,'?/,' *,"a*.)"t'
- ..w . A-m .Uh'fff?
uwduse'*'p'a -
'.'* 't- wm
- a. w:.ps. -%K *e i s ep'?'T'a s. .%y vm .
2 or.yfs gas D.i.i.ww o ,0W.was.+,.d.. tymeserm w; van- na.;wn;<wwvm4+v o e.w .m::eri9%tytxi+on;;e+w??t.".s+h,w,wmv e.ss:s van :epaAt v~b.bmwn.nt . stsec tM+ wmum.wne:..nu. on at.- wayw:eswH-m v&a:+ne ta .p.
~p~.~ w4:9 mww'hwayp<wyw;hv-wemtsy'erWpi.<~tM ev e an- / ~ ~nma.s.&;w. .
*s en
~
m v 3 ..--
. f_i ca _on_ss
- e. mtoi.nnwup,v~t_equ n ud_e_s_ga_reyre.v._ew iwomom,mesym.mw.wiwwe_vd. --
.o co.n _un_c._on.
~._l sm.wie t :.yi-erwwf:~i.
- w~.4..g_eo._e_c._n_c_
md.-: ~r<wwsem. - 1 an ant:hmwmm.ut.w.w. h>w.:i +w.b;m.w+.wd-4 J.._tVEfWi.1Nni_TWssF_i@w __ m I _mm+ u, 5 _u..,,,m...,.
. + t, ~m _.y,..a. _. m_..m. w.. o. .
c, n, m c, ,u w _m . ., .. ,
+..u. .t. ,, .,mu,
,m_. m . u... ..
_ _ m u .4 m. u. .en
- o. ., ,.my.-
4 6 e
.w4ewa~.>w.-
_a.ta_c_ce_p _ tm,blweg a.m_et- the seismic wave transmission characteristics (amplification 7 or deamplification) of the materials overlying bedrock at the site are 8 describedasafunctionofthesignificantfrequenciesIR6Q2{. The 9 following material properties should be determined for each stratum under the 10 site: IK_i^E.6i_si]. - _ seismic compressional and shear wave velocities, bulk 11 densities, soil index properties and classification, shear modulus and damping 12 variations with strain level, and water table elevation and its variation i 1 13 (~R.E_ BIO)<'.In each case, methods used to determine the properties should be 14 described in Subsection 2.5.4 of the SAR and cross-referenced in this 15 subsection. em. . ..
+um _,4._...._
..m . . . . . . ....
w . m.+..mmu.v m, i, m .a . m_ u. . , _m A u, , , c,, . . u., m... . .. m +m .u... w.. e..w,.,, + L. m . a 16 free-f4cid grcund act4cn (including cignifiOant frequencic ) must be A , ,
,u.u u.. um . +um
..,....,..a.., +.~mw, rr, m-++
. . , m 17 Amu mw.... .. u. . ~ A . , .~ .. . .~ -rw, c..om..a
. . . . _ a.. A
.m, u m.m. u. . ~
..m a,
. a 18
.. u. e. e. w m ren+. ,.mu ... ..it ._._, ~ m +..a,
,, r s ., u. . ...~ +u a. ,
. 3
- a. . e. u, _, .s. . . e.. _y. . s~ . . ,. . u.,.A, . ,~ . , c, 19
+La .
1, ,u , 4. , , h.m 1. .A
,.m.,
4.Am#+, ,mL . w mr. t, _m , + , o. r. , 4. +. wm ,m , A
.-m.m.rrr m.4, m, + m , ..~ .~ -.. _.m A4.+.4.m . . . . , .s .m 20 matwm,u. . ,.r.. _,rs. mms.,. ...m.u. _s u, . , .r.....,~m
. . . . .a r. u.m .~ ,.. -m.u.w.s...
m.... r m..m, . +y.3.. u... .
.. . . , -~ .. .m _.
A +a 21 % r,,m_m. t, a, m1. w .A e.,~ 3..o ,,~ m e. 4. .m . I .,1.
.. s
. m.mar.,m_m A .. . . ,
_. mm.. + _1, .,m~ + . 4.
.. .m . ,i , L.m. m . 1. .A La
.s L a . 1. .A km
+- km r .A L.,mA A,+,
.Aar,t 3m,vum.A ,. m.
4, ,., . +
- m. , m... ,a 22 w s .w .A .. .w .is . ., u im, ww ...w ,a.svu .w - u .i s . .is muu a
. k.+. u, 4, m m.A w 23 free-f4 v^', ,d. . ' . " . . ^ m" - -^
- .. w
, _ " m^ - + . " ' , ' ,, _ "_"^^^m'"..3
, rw. ^ ^^
.m
+'^
..~ .m^". , w.'m' . m- +v.^ ". +. '.es 24 a +. +.. 'm^"..".w . ' ^', ~.m- W e( +.
. "-"a"....,",,',+,,,^,#,
.. .. .'^y'..r, r
- ^-
", "_ , m -^- .d _'" 3' ,m" , "~ , . ..,','+"..n A,+, , , .. .1 . n 25 .A .- 6. ., . t._r.m.
k a ., .m .m..m .o u. 4 1. ., k.,1,w m , t. .m m. w,, ,me,w, r. .m m. _1.
. w ., +. 4. . ,.w m l, ,u m . - , 4. +. wm.,,
- 4. r. e m.m.. , a, t, m +km 26 , m 4 1,
.m .m m. ,m,om,n t,. o. 4. +.. k. . .
. ~m , ,m,4,
. .k,.
- 4. +i.m.
. ... , m, f, r m..m.am.
n rw +. 4. w.e, o. 4. +. .L, .Aep+.k. . , .m_ em _m. . + m..m 1r.... . 4..+ 27 # 1 mm s m, +. 4. m ...,..
,+
- m. L. 4. w,. L,., + L_a ,m.+.
_ . . . .m 1 .. ~,a. t. ... o. . 4. ,, er 1 4. _,. A ,s , L, m .1. .A mm k.m,.
. mmr _ a.-f 4. _A .m.,
.. .,~
+Lm
,+ +u r. u. m r,e c,u,w..u ..ot4en 28 n, , ...m.c m. m .. u...r .o c. s..mu mc u, ,, o. u.mm.A 3,.,Am. _ . . ., ~A
.~ . ,,~ m 3.,~ .
29 m-
. m..,m.+m..m1
. . . .~ 4 4. .m . ., L,,m , - o 1. A6ae-eens.,+.m
, 4 wm. + u. t. +. L. . ..~ + L ,. .m. .m ,. m, + 4. w r rs . .,,
m
.o,r+Lm ,,~ , m, a, l, f m E
, ee-s4tw-,,
30 pee , 4,1, w . .
,_,r.._
m m... m e, n A at. m.m
..m .,
, , . . ~ , w mmm
+..L...4. . , .m m d.1, 1. ,o wm.,m,
, m.
.m o. w 1, ,u d, m .g-a 31 eempetent acteric1, or in cc e of insufficient reccrded-geeund-met 4en dctc, w w.+_, y. u. . . +. u, sysw 3L, m - . . ,. ~ + , . _ , m um ,+ ,
i.., v, s. m a. c. u. w.A vii ..i . w s .y m m, v u u ~ m + u .a. u. w u, ,, wh w , .y u. myy.Tms u e , + 4. .mm. vmm. +Lm +m. T, ,L, m mA 33 1m vsu. .mw .y a
. t. 4. L. w.aew.inyw.wi m - m m + - . +, .uu.a ,swa m 4. u,1. . w Oen+, m.m i i, m so.m 4 4..ims. ,syww . m ,. 4, ts 4, w u on1 m+m +
34 e.L.v u Au k .w m. ,wv,.. ,. . , 4 ,as 4, w +m.. ons.4 + L. . +..L. w .m,m a y .ywmm.+ .m 4. w , .T s at + L. ..wm
,m w vmy w . .. i s ,
-mu, + mw.m t, u,1, .
2.5.2-10
1 Where vertically propagating shear waves may produce the maximum ground 2 motion, a one-dimensional equivalent-linear analysis (e.g., Ref. 23 cr 2' M 3 6Ef5) or nonlinear analysis (e.g., Refs. 25, 25, cnd 2716*1TT_6_6T18) mm _La ,~ may be 4 appropriate and is reviewed in conjunction with geotechnical and structural 5 engineering. Where horizontally propagating shear waves, compressional waves, 6 or surface waves may produce the maximum ground motion, other methods of 7 analysis (e.g., Refs. 23 eind 29 I@iid30) may be more appropriate. However, 8 since some of the variables are not well defined and the techniques are still 9 in the developmental stage no generally agreed-upon procedures can be , 10 promulgated at this time. Hence, the staff must use discretion in reviewing 11 any method of analysis. To ensure appropriateness, site response 12 characteristics determined from analytical procedures should be compared with 13 historical and instrumental earthquake data, when available. 14 2.5.2.6 Safe Shutdown Earthauake G?60iidIM6fT6il. -In =ceting the
+, +u, --mm+mA 15 mm m.,. mi 4im _m _ m ., i v ., c, n .ma c. amm we w s_ ,-m i
- e. m. u ,~,. . += i4 vii m- 4.. , ,
m
-i .L.m. w ..,
+ L ,.
m.e. u., m ., +w.,m.,. m.
, . . , v i i i ., .
me mo v.iw s nma A -m+4m- f +La +m.__, m r. +La 16 , cwU e r,. 4i..,uusws A m .awww _ m 4 u m,4 4 como cim,A y vuisu mv6 a vis - afm,4 ww ati n Aiwu v'O i 5,iw isi ww s ms v Liew i sww iiwsu mm,---,m ,m,,,+n,- ,mA 4- %+ ,,+ a wus ss s u,+4,om
..L 4 , L ..an1A 17 . w a ywis a w ., y w w w i u m u s.u is us 1.wuaw
, ---,m vuw ww us 4wik. u + wr i s i s s a en v u i u w m iw.m e. ni 1 w +
}
18 ct the :lte frc tAe-maM mum certhqucke deter & cd in Subseetica 2.5.2.', 19 considering the :ite trcr,,=t::icn effect determined in Subsectica 2.5.2.5. 20 .
. -^".w-i.'
w ,"'."s.w.... --^ +
. - ,,', .~".i ru s.. . .
- + ^ +
- m.swi.' w.,w's,"..".,w., - +-
a r i .. d."_-- +'m-we '...s~w~,+6 y .
--^
3 . . " .. d. 21 mm54
.im -s i .,
4, 5, -
- i. m.i .A .i 4.
ammm i f r, w . w . , +w ti o,m
, m u. n m. .n ,. o, L., ..,. .A . ,, #c a,.s i .- +v mA
- m. 4.. i ..e.. s i k, ,, _m ,-i 4v.i4 , - 9 . .% r. 9 . A,, i , +v.L.e utk s+mmu namn J mm44n- La c e r -.. s e + km emmemmu=44ue. maak 22 u uns .s y s ,y y i w wiiu mu w a vi.
e
., pwws n m a 4 f.swu 4m sviA tam +Tt s' w w w s. musw uw us sv.s.,wi vuw ww 4, is www.s s am m 23 t, m, ,m a n i m m L
. .,.m. .A m.m.u, .. +w.L u +w f. v . me
_m e k. _i ssm . L. ,a n. _% L a .
.. .:.. g ~ ., ..,.c: .,..;.x- n.
24 ni. isisu sec-I n..wt.h .,; m. Anbn.,- st.i.v.ongtv
- - , hmn e;staffer.- -,....~isn..u..i.,th~e..
. - ev
- ~ ews.- rapp. , .,.. .sl-icant'>s . . . .proc,ed.g. . . . - .ure?to!
. ~v. nswy,det,er,,,m.nin nen !
25 th5,7.;..S,.,.$. E.M.Nw
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17 The follcuing step: cu=: rice the :t:ff rev4ew-of the SSE. l 18 1. Both horizontal and vertical component site-specific response spectra 19 should be developed statistically from response spectra of recorded 20 strong motion records that are selected to have similar source, 21 propagation path, and recording site properties as the controlling 22 earthquakes. It must be ensured that the recorded motions represent 23 free-field conditions and are free of or corrected for any soil- , 24 structure interaction effects that may be present because of locations l l 25 and/or housing of recording instruments. Important source properties l 26 include magnitude and, if possible, fault typer and tectonic 27 environment. Propagation path properties include distance, depth, and 28 attenuation. Relevant site properties include shear velocity profile 29 and other factors that affect the amplitude of waves at different l 30 frequencies. A sufficiently large number of site-specific time-l l 31 histories or response spectra or both shc0 3 be used to obtain an l 32 adequately broadband spectrum to encompass the uncertainties in these 33 parameters. An 84th percentile response spectrum for the records should 34 be presented for each damping value of interest. and-ce: pared to the4SE 2.5.2-12 l _ _ _ _ _ _ _ _ _ _ _ _ ______-__m _ __ . - _ - -_-__-- : - - - - - - - - - - - - - - ~-- -.- - - - - - - -
1 free field and de:ign rc pen:: :pectrum (e.g., Refs. 30, 31, 32, 2nd-33
} 2 ( Q (jf( @ @lf{}. The staff considers direct estimates of spectral 3 ordinates preferable to scaling of spectra to peak accelerations. In 4 the-Eastern Unhed-States, relatively lit 44e-hfer=tica 1 vail:bic on 5 =gnitude for the 1:rger hi:tcric carthquake:; hence, it =y be 4 6 apprcpri;t: tc rel/ cn inten:ity cbservat4ca: (description; cf 7 eaethquak; cffect:) te c:ti=tc =gnitude: of historic event: (e.g.,
8 Ref:. Si :nd 35). If the data for site-specific response spectra were 9 not obtained under geologic conditions similar to those at the site, 10 corrections for site effects should be included in the development of 11 the site-specific spectra. 12 2. Where a large enough ensemble of strong-motion records is not available, 13 response spectra may be approximated by scaling that ensemble of strong-14 motion data that represent the best estimate of source, propagation 15 path,andsiteproperties(e.g.,Ref.36$5). Sensitivity studies 16 should show the effects of scaling.
} 17 3. If strong motion records are not available, site-specific peak ground 18 acceleration, velocity, and displacement (if necessary) should be deter-19 mined for appropriate magnitude, distance, and foundation conditions.
20 Then response spectra may be determined by scaling the acceleration, 21 velocity, and displacement values by appropriate amplification factors 22 (e.g., Ref. 37 26). Where only 0;tinte cf peak-grcund : cclcration 23 arc available, it i: acceptable to :clect a peak ac-eclcratica and c:e 24 this peak acceleratica as the h49h frequency : ymptete te standard + zed 25 rc; pen:c :pectra :veh : de cribed in Regulatory Cuide 1.50 (Ref. 5) for 26 both the horizontal :nd vertical components of =ct4cn with the 27 apprcpriate mplificatica feet +es- For each controlling earthquake, the 28 peak ground motions should be determined using current relations between 29 acceleration, velocity, and, if necessary, displacement, earthquake size 30 (magnitude or intensity), and source distance. Peak ground motion 31 should be determined from state-of-the-art relationships. Relationships I 32 between magnitude and ground motion are found, for example, in 33 References 12Md37] Due-toBecasejofthelimiteddataforhigh I 34 intensities greater than Modified Mercalli Intensity (MMI) VIII, the 35 available empirical relationships between intensity and peak ground 2.5.2-13
1 motion may not be suitable for determining the appropriate reference 2 acceleration for seismic design. 3 4. Respense Spectra developed by theoretical-empirical modeling of ground 4 motion may be used to supplement site-specific spectra if the input 5 parameters and the appropriateness of the 'nodel are thoroughly 6 documented (e.g., Refs. 10, it, 45, and 15 M Tt._2_7 K_ d.dI_28). Modeling is . particularly useful for sites near capable fau,,t: -.-...t..~.o..~n.i 7 tec c._# s.~ou. .rc.. e. s bE.l 8 [;gri,dee., pe- n..t_ruc.,.t p ures-,.. that may experience ground motion that is 9 different in terms of frequency content and wave type from ground motion 10 caused by more distant earthquakes. ! l 11 5. Prchabili: tic c:timate: cf :e4smie-basard :hculd bc alcu h ted (e.g., j 12 Ref:. ?! and ??) :nd the underlying :::umption: :nd :::cciated 13 eneeetaintic: :hculd be dccumented to :::ist in th: :t:ff': everaR 14 ,2.m.- s . . u. . . u. s. s. . py. , _a..
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, ,,, u, , u. 3,u A 15 which cismic scurc e are :ignifi ant to the cite. "niform h =rd 16 spectra (,pectra that have : uniform probaW444y-ef excecdance Over the 17 frequcacy range of interest) :hcWing uncertainty :hculd be calculated 18 for 0.01, 0.M1, =d 0.0001 :=ual probabilitic; cf excecdance at the 19 citc. The probability of exceeding the SSE rc:pon:c spectra :hould 01:0 ;
l 20 bc =timated nr.d comparisca cf rc; ult; made with other probabilistic 21 studic:. x .s .w.n m, , . .~,a ,x.. sm;.$ 4grou._nd.:. mo
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f :w 27 28 The time duration and number of cycles of strong ground motion are required 29 for analysis of ite foundatien liquefaction potential and foe design of many 30 plant components. The adequacy of the time history for structural analysis is 31 reviewed under SRP Section 3.7.1. The time history is reviewed in this SRP 32 section to confirm that it is compatible with the seismological and geological 33 conditions in the site vicinity and with the accepted SSE model. At present, 34 models for deterministially computing the time history of strong ground 2.5.2-14
1 motionfromagivensource-siteconfiguration::ybehijlimited. It is
) 2 therefore acceptable to use an ensemble of ground-motion time histories from 3 earthquakes with similar size, site-source characteristics, and spectral 4 characteristics or results of a statistical analysis of such an ensemble.
5 Total duration of the motion is acceptable when it is as conservative as 6 values determined using current studies such as References 40, 19, 50, and 51 7 2.9"3.0.L k 9 3Piii.n.d?32.. L-8 _fo'r~eila1H. at_tiWs_f_"ths_'1_th0ifactiss'. potent'ial~'ht'~th~i sits"~ _ -_ - ~ ~ ._~ &.the_'t_f ee_"as_at'.ios, v ~ vn rw n na ,v -e .w .a ,~e ,, m-+
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11 hayif. msgni tUdels ' o f'l e~s s' than ' 6;~ th's' time h i st6ry ~sel ectsd foF thsiVal'u ati6ri, 12 of'ljjdefiction.';iotential mustlh' ave duration and number 'of st'rdng . motion
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13 6^yclesfcrfesporiding o to' at.least an event of masnitude 6, unless"a larger
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. ~m.w,.w.sw e . .nt 15 2.5.2.7 Occretina B :i: Earthcuake. In aceting the requirc cat: cf 16 Reference 1, thl: ubsectica i: acceptable when the vibratcry grcund actica
} 17 for the CBE i; de:cribed :nd the rc:pon:c :pectrum (at appropriate d = ping 18 value:) at the site :pecified. Prcbability calculation: (e.g., Ref . 41, 17, 19 and-54) should be used 40 c;timate-4hc probability of exceeding the CBE during 20 the 21 cper; ting life of the plent. The maximum vibretcry grcund =ction of the CBE 22 :hculd bc at least enc half the maimum vibratcry ground action of the SSE 23 unic:: 10wer OBE can be ju:tified en the b :i: cf probability calculation:. 24 41 h:: been :taff pract4cc tc accept the CBE if the return period is on-the 25 crder cf hundred; cf year (e.g. , Re f. 31) . 26 III. REVIEW PROCEDURES 27 Upon receiving the applicant's SAR, an acceptance review is conducted to 28 determine compliance with the pf6p6ssJ investigative requirements of 10 CFR 29 Part100,SudildhIil0l0]23AppendixA(Ref.1). The reviewer also identifies 30 any site-specific problems, the resolution of which could result in extended 31 delays in completing the review. 2.5.2-15
i l l 1 After SAR acceptance and docketing, the:c Orc:: Orc identified where fM l 2 [ji M E [(( @ @ ] @lj[(i@ipii Q iid additional information 1: required-to 3 [0@6ffdhQijlifi$tisQpp}ipshtD$si{siijfdei{gh dctcrminc thc carthquake l 4 hazard. These are transmitted to the apphcant as deaft requests for , l 5 additional information. j 1 6 A site visit may be conducted, during which the reviewer inspects the geologic l 7 conditions at the site and the region around the site as shown in outcrops, 8 borings, geophysical data, trenches, and those geologic conditions exposed 9 during construction if the review is for an operating license. The reviewer ; J l 10 also discusses the questions with the applicant and his consultants so that it i 11 is clearly understood what additional information is required by the staff to 12 continue the review. F0110xing the site visit, a revised Oct cf request: fer 13 additional infer::tien, including any additional question; that ::y have been 14 develcped during-the site vi:it, i: fe=:11y tran:mitted tc the applicantr 15 The reviewer evaluates the applicant's response to the questions, prepares 16 requests for E6) additional clarify 4eg information, and formulates positions 17 that may agree or disagree with those of the applicant. These are formally 18 transmitted to the applicant. 19 The Safety Analysis Report and amendments responding to the requests for 20 additional information are reviewed to determine that the information 21 presented by the applicant is acceptable according to the criteria described 22 in Section II (Acceptance Criteria) above. Based on information supplied by l 23 the applicant sHdMuf6fmiti65
~ - - -
obtained from site visits, ee-frem staff l 1 24 consultants, or literature sources, the reviewer independently identifies s@ l 25 siis]iisiss the relevant :ci::ctcctonic provinces ss{ss!Ms6if@, gplMiHj l 26 ihsil evoluctc; the capability-ef fault; in the region, and determines the 27 earthquake potential for each province and each cap ble fault er tectenic 28 st+uet-see using procedures noted in Section II (Acceptance Criteria) above. 29 The reviewer evaluates the vibratory ground motion that the pctential 30 carthquakes (6htfb]lij6plii{thjiiakis could produce at the site and def4nes 31 isitspifeslthA(Igp61iddlin5 fish [th the SSEI cafe shutdcwn carthquake and operating 32 b;;i: carthquake. e 2.5.2-16
l 1 IV. EVALUATION FINDINGS I 2 If the ev;13: tic by the ct:ffr On completion of the review of the geologic 3 and seismologic aspects of the plant site, Kt[Qysluit]KliyJf{slitiff 4 confirms that the applicant has met the requirements or guidance of applicable 5 portions of References 1 through 6 IIQ3, the conclusion in the SER states 6 that the information provided and investigations performed support the 7 applicant's conclusions regarding the seismic integrity of the subject nuclear 1 8 power plant site. In addition to the conclusion, this section of the SER 9 includes Elgdi{ijDif (1) definition: cf tectonic provinees IIfiiiG l 10 jii65[#j, (2) evaluatica: cf the capability of geologic structures in the 11 region, (3) determination cf- the SSE carthquakc(:) and E65{f5}}jjij l 12 s_iEth.4U_.s_k_i._i?ih_disiis_6iitid_ free-field response spectra b :cd en evaluatica cf ; 13 the potent 4a1 carthquakes, h)]thsISSENidd (5 4) thi time history of strorg 14 ground motion, and (5) determination: cf the CBE free field rc pen:e :peet+a. 15 Staff reservations about any significant deficiency presented in the 16 applicant's SAR are stated in sufficient detail to make clear the precise 17 nature of the concern. Mygddl[}jQili{ijjf(M)laljaliidfiliSi((iiQii[5] } 18 )^[Q~nli@hdih{ijil{isKl((pjF{p@idEj6d[dfi$usil[6[thisF7EIU)li[M[s 19 Esiif3fiQhHsifity[sii))II((bM The above evaluations determination: ce 20 redetermination: are made by the staff during both the construction permit 21 (CP), and operating license (OL)s N 6nihlhidll R snsbl(C$ )M W jihlyfiifi[pshiij 22 ((iiii[jf(jfi((jj[%jipy6pf@). 23 OL applications are reviewed for any new information developed subsequent to 24 the CP cafety evaluatien repcrt SER. The review will also determine whether 25 tne CP recommendations have been implemented. 26 A typical OL-stage summary finding for this section of the SER follows: 27 In our review of the seismologic aspects of the plant site, we have 28 considered pertinent information gathered since our initial seismologic 29 review wh4eh Vest!was made in conjunction with the issuance of the 30 Construction Permit. This new information includes data gained from 31 both site and near-site investigations as well as from a review of l 32 recently published literature. 2.5.2-17
1 As a result of our recent review of the seismologic information, we have ! 2 determined that our earlier conclusion regarding the safety of the plant 3 from a seismological standpoint remains valid. These conclusions can be - 4 summarized as follows: 5 1. Seismologic information provided by the applicant and required by 6 AppendixA(({Q6Qy@}to6]10CFRPart100providesan ) 7 adequate basis to establish that no capabic fcult: ((@H500f@ 8 exist in the plant site area which tfig would cause earthquakes to 9 be centered there. 10 2. The response spectrum proposed for the safe shutdown earthquake is 11 the appropriate free-field response spectrum in conformance with 12 Appendix A $s@l6;ii3100I2316f te 10 CFR Part 100, 13 The new information reviewed for the proposed nuclear power plant is 14 discussed in Safety Evaluation Report Section 2.5.2. 15 The staff concludes that the site is acceptable from a seismologic 16 standpoint and meets the requirements of (1) 10 CFR Part 50, Appendix A 17 (General Design Criterion 2), (2) 10 CFR Part 100, and (3) 10 CFr Part 18 100,AppendixAl$ij[1E6]100123. This conclusion is based on the 19 following: 20 1. The applicant has met the requirements of: 21 a. 10 CFR Part 30, Appendix A, General Design Criterion 2 with 22 respect to protection against natural phenomena such as 23 faulting. 24 b. 10 CFR Part 100, Reactor Site Criteria, with respect to the 25 identification of geologic and seismic information used in 26 determining the suitability of the site. 27 c. 10 CFR Part 100, Appendix A (Scismic end Ccologic Siting 28 Criteric for Nuc1 car Po=r Plants) Sshtfori[1004231[{Rsfl[1)l 29 with respect to obtaining the geologic and seismic 2.5.2-18
1 information necessary to determine (1) site suitability and ) I 2 (2) the appropriate design of the plant. Guidance for l 3 complying with this regulation is contained in Regulatory I l 4 Guide 1.132, " Site Investigations for Foundations of Nuclear ; 5 Power Plants" (Ref. 4); D@(9ti@j@fRjj@el@l0[2] ( 6 $@l[j[cj((R@l@Tr]Mffif]j@HQJa[@l@@@@ 7 $ @ @l @jggi@(@[@6ji@ M QM Q $@])fi@ 8 Regulatory Guide 4.7, " General Site Suitability Criteria for 9 Nuclear Power Stations"g}P p~6@l@Q]j@f{ (Ref. 5)i-and 10 Regulatcry Cuide 1.50, "Dc:ign Rc: pen:: Spectre for Sci:M e 11 Oc:ign Of Nucle:r P=cr Pl:nt:" (Ref. 5). 12 V. IMPLEMENTATION 13 The following is intended to provide guidance to applicants and licensees 14 regarding the NRC staff's plans for using this SRP section. 15 Except in those cases in which the applicant or licensee proposes an l 16 acceptable alternative method for complying with specific portions of the 17 Commission's regulations, the methods described herein will be used by the 18 staff in its evaluation of conformance with Commission regulations. 19 Implementation schedules for conformance to parts of the method discussed 20 herein are contained in the referenced regulatory guides and NUREGs (Refs. 4 l 21 through8y). 22 The provisions of this SRP section apply to reviews of construction permits l 23 (CP), operating licenses (0L), @ZlfQl@iii!{Q peeliminary de:ign approval l 24 f?DA), final de:ign :pproval (FDA), and combined license (CP/0L) applications 25 docketed Miii@jiblfhil@js%$@j@l10d!2)]{@{Q[PRQi@ ftcr ihe 26 date of is:cance Of thi: SRP cction. 27 VI. REFERENCES 28 1. 10 CFR Part 100,[ff(6{@]$@jp[11@23]MGigay[Q@[Q@lp l 29 @{@j((fd%fsijAppendixA,"ScimicandCc;1cgicSitingCriteri: 30 for Nuclear Pcuer Plant:." 2.5.2-19
I 2. 10 CFR Part 50, Appendix A, General Design Criterion 2, " Design 2 Bases for Protection Against Natural Phenomena." 3 3. 10 CFR Part 100, " Reactor Site Criteria." 4 4. USNRC, " Site Investigations for Foundations of Nuclear Power 5 Plants," Regulatory Guide 1.132. 6 5. USNRC, "Ger.cral Site Suitability Criteria for Nuclear Power 7 Stations," Regulatory Guide 4.7[(fjFj@sid!]tii[((5}IC@lypD^{ 8 6. USNRC, " Design Response Spectra for Seismic Design of Nuclear 9 Power Plants," Regulatory Guide 1.60. 10 7. US NRC, " Standard Format and Content of Safety Analysis Reports 11 for Nuclear Power Plants [LWEEd}M6fij," Regulatory Guide 1.70. 12 8. USNRC, " Report of Siting Policy Task Force," NUREG-0625, August 13 1979. 14 9. N. L. Dr:tew ct al., "An Approach to Scismic Zonatica for Siting 15 Nuclear Electric Pcuer Cencrating Facilitic in the S : tern United 16 m tes," prepared by Roundcut A::cciates, Inc., for the USNRC, i 17 NUREG/C411577, Hay-49& 18 $$C[Q$NBC}]MdyfR@fjirij[ajd[ Chir;@J@@j[jfji$53 sii$i}65[ sis [iiid 19 @Q[rjj$it]l((flSi{sls@@6@]JiftMisikBIGF60$dljlN6){6h))][0faff 20 @plii3FjlGMas[D$10322 21 10. C. 'd. Stover et :1., "Scismicity Maps of the State: cf the U.S.," 22 Geclegical Survey Mi ccllencou: Field Studic: Maps, 1979 1981. 23 JO34. R. L. Street and F. T. Turcotte, "A Study of Northeastern North 24 American Spectral Moments, Magnitudes, and Intensities," Bulletin 25 of the Seismoloaical Society of America, Vol. 67, pp. 599-614, 26 1977. 2.5.2-20 i
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n ., .~ , inen. 25 14 M. P. B. Schnabel, J. Lysmer, and H. B. Seed, " SHAKE-A Computer 26 Program for Earthquake Response Analysis of Horizontally layered 27 Sites," Report No. EERC 72-12, Earthquake Engineering Research f 28 Center, University of California, Berkeley,1972. I 2.5.2-21 l
i l 1 1 IS. A. J. Eardley, "Tectenic Divi:icn: cf North America," Bulletir, cf j 2 the American A :cciatica cf Petrelcum Ccclecists, Vol. 3S, 1"51. I 3 15 B4. E. Faccioli and J. Ramirez, " Earthquake Response of Nonlinear , t 4 Hysteretic Soil Systems," International Journal of Earthauake i 5 Enaineerina and Structural Dynamics, Vol. 4, pp. 261-276,1976. 6 15. J. S. Madley :nd J. F. Devine, "Scismetectonic Map of the E;; tern 7 n. . a. . .a
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1 i 8 ((25. I. V. Constantopoulos, " Amplification Studies for a Nonlinear 9 Hysteretic Soil Model," Report No. R73-46, Department of Civil 10 Engineering, Massachusetts Institute of Technology, 1973. 11 17. M. L. Sbar and L. R. Syke;, " Cont-empeeary Comprc::ive Strc : and 12 Scismicity in E;; tern North America: An Example of Intra Pl:tc 13 Tectonic;," Sulletin of the Ccclecical Societ', of Americ;, Vcl. 14 84r44% 15 }fB6. V. L. Streeter, E. B. Wylie, and F. E. Richart, " Soil Motion 9 I 16 Computttion by Characteristics Methods," Eroceedinas of the 17 American Society of Civil Enaineers, Journal of the Geotechnical 18 Engineerina Division, Vol.100, pp. 247-263,1974, 19 IS. . S. Smith and M. L. Sbar, "Centemporary Tecton4c: :nd Sci;micity 20 ef-the "c tern United States with Emph :i en the Intermcunte4e 21 c o-ismic Scit," Bulletin ef--the Ccclecica' Society of ^merica, Vcl. 22 BE,. .i n. ,. ,A . l 23 18G7. W. B. Joyner and A. T. F. Chen, " Calculations of Nonlinear Ground j 24 Response in Earthquakes," Bulletin of the Seismoloaical Society of 25 America, Vol. 65, pp. 1315-1336, 1975. 26 10. USNRC, " Safety Evaluation "cport (Ceclogy and Scismology) "clated 27 tc the Operatica of San Oncfrc Nucle:r Cencrating Statica, Unit: 2 28 e...a ,. , u.n..n
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1 }]l M. T. Udaka, J. Lysmer, and H. B. Seed, " Dynamic Response of 2 Horizontally Layered Systems Subjected to Traveling Seismic 3 Waves," Proceedinas of the Second U.S. National Conference on 4 Earthauake Enaineerina, 1979. 5 20. D. B. Sle=cas, "Determinatica of Oc ign Earthquake-Magnitude: fce 6 M4crczonation," Proceedinc: cf the Third International Earthcuake 7 Micrczonction Conference, 1982. 8 20 G9. L. A. Drake, " Love and Raleigh Waves in an Irregular Soll Layer," 9 Bulletin of the Seismoloalcal Society of America, Vol. 70, pp. 10 571-582, 1980. 11 21. M. C. B nilla, R. K. Mark, cad J. J. Lienkeemper, "St+t4st4eal 12 Rektion: Mong Earthquake Magnitude, Surface Rupture, Length cnd 13 Surface Fault Disphccment," Sulletin Of the Sci :clecical Society ; 14 cf 6crica, Vcl. 74, pp. 2379 2411, 1984. I n . l 15 2)30. USNRC, " Development of Site-Specific Response Spectra," NUREG/CR-16 4861, March 1987. 17 22. T. C. Mank: and M. Kansmcri, "A Momcat Magnitede-Scale," Jcurnal 18 cf Cecchysical Research, Vol. 84, pp. 2348 2350, 1979. 19 22 34. USNRC, " Safety Evaluation Report Related to Operation of the 20 Sequoyah Nuclear Plant, Units 1 and 2," NUREG-0011,1979. 21 23 33. USNRC, " Safety Evaluation Report Related to the Operation of 22 Midland Plant, Units 1 and 2," NUREG-0793, May 1982. 23 2(33. USN_RC, " Safety Evaluation Report Related to the Operation of 24 Enrico Fermi Atomic Power Plant, Unit No. 2," NUREG-0847, July 25 1981. 26 25 36. T. H. Heaton, F. Tajima, and A. W. Mori, " Estimating Ground 27 Motions Using Recorded Accelerograms," Surveys in Geoohysics, Vol. 28 8, pp. 25-83, 1986. 2.5.2-23
, 1 24 37. USNRC, " Development of Criteria for Seismic Review of Selected 2 Nuclear Power Plants," NUREG/CR-0098, June 1978. Wt?MTMWM:T?M1 'y' ~ }7 '**"? 4+ " * * ~ ':"d?f'y
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12 1520, 1978. I 13 30 49. B. A. Bolt, " Duration of Strong Ground Motion," Proceedinas of the ' l 14 Fifth World Conference on Earthouake Enaineerina,1973. ' 15 3]50. W. W. Hays, " Procedures for Estimating Earthquake Ground Motions," 16 Professional Paper 1114, U.S. Geological Survey,1980. 17 M 54. H. Bolton Seed et al., " Representation of Irregular Stress Time 18 Histories by Equivalent Uniform Stress Series in Liquefaction 19 Analysis," National Science Foundation, Report EERC 75-29, October 20 1975. 21 33. W. B. Joyner and-0,-#. Secrc, " Peak Hert:cnt:1 Meclcration and 22 Velocity frcm Strcng Motion Recceds-Inehding Record; frc the 23 1979 Imperial Valley, Californi: E ethquake," Bulletin of tAe 24 Scismolecical Society of Merten, Vcl. 71, 2011 2038, 1981. 25 39. K. W. Campbell, "Meer Scurce Attenuation of Peak Horizcntal 26 Acceleratica," Bulletin Of the Scirmc1ccical Society of Merica, 27 Vol . 71, pp. 2039-2070,1981. 9 2.5.2-24
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