ML20128E997

Adequacy of Structural Criteria for Millstone Nuclear Power Station

ML20128E997
Person / Time
Site:	Millstone
Issue date:	02/11/1966
From:	Hall W, Newmark N NATHAN M. NEWMARK CONSULTING ENGINEERING SERVICES
To:
Shared Package
ML20125A422	List: IA-92-198, Requests Written Answers Be Provided to Questions Developed During Discussions at Meeting on 660218,for ACRS Review. Lists Specific Questions Which Applicant Should Be Prepared to Discuss ML20125A419 ML20125A429 ML20125A437 ML20125A965 ML20125B006 ML20128E705 ML20128E860 ML20128E913 ML20128E931 ML20128E997 ML20128F017 ML20128F066 ML20128F091 ML20128F095 ML20128F190 ML20128F246 ML20128F283 ML20128F339 ML20128F355 ML20128F370 ML20128F400
References
FOIA-92-198 NUDOCS 9212080228
Download: ML20128E997 (9)

Text

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/.DEiviCY OF iHC STEUCTUP4L' CRITERI.'.

FOR TPE Ml(.Li10NL NUCLE W POWEh'ST T!0N

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. Thi s report .conce rns ti,e J t ruct up1' adequac~ y,. of t he' cont c. Ie cot st ructures end components for the 54i HWc (}727 MJt) Millstone Nuclei r f ower

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Stit lon. hereaf t er re.crred to as 'Milht6ne3 tat io'n'," for which applicat ion f or a Const ruct ion permit and f acil'ityflicchsh hi.5"bcen inade' to t he t'n;t ed

!t at es

• toraic Energy Convis s bn (Docket No. 50dpS) t y t t < Connec t . ,- t' . I . . ' ', .

and Power Company, The Hart icTd Elect ric Lig$ht Company, West e rr Mas s 0 c hu:.e t t i Elect ric Company; and t he Millstone . Point Corv$ny. The facilit s i f- loc-ttd

'on the north shore of long Is l4nd Sound in the town ci Vr t er f. rd, Conn"c t icut .

bnd about 3. 2 tr.i l es C' of t he t awn l imit s "of New tendon. Ce nr.e e t .t Spec i f ic6 Ily. 't't. it rere rt i s concern ^d' wit r ev.. loat a.n v ti. Jesicn c riteric thtt det e rr ine' t he at,'[it y of t he primsry and s econd..rs co nt a :n'+ nt

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s y!- t er's t o wit hs t and t he 0.M g de> ign u rtbr.u +ke *. iw itanccss ly .:t! ti-e c t % e loadr forming the bas is cf the co tainnent design. The f aci tv otro is t e.-

he d:S f0 ned to witnstand a, m i % . grJund iccclerat ion c. O. i . : cv .+ !! '

p re:.e r ve t he ab i l i t y t u rna is.t c in t he plant in a sof c thut fawn con.i t sa, i.lso, t he scisnic di s ign erit er la for other. Class I's t rac t e res , tv ir t od piping are reviewed. . ,

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,, 2 ibis repdtt ' 15 bas'ed or 4nfo rtvt lon and c rit er ia st t f ort h in the De.s ign and Analys is . Report s i3n.f), es liited at t he end of t hi se ' repo .e rt,. in

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addit ion we have pa rt ic ipat ed in discus s ions with t r e AEC Re aff,

- t'%, L i n wh i ch r.any o f t h'e , des i gn c r i t e r i a we re d is cuss ed Iti,,,

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II. D.~' C E F T 1ON Cr' r AC II ITV Millstont ?tati.n 15 desc/lue? In the- 3'i. cs a 1727 r. t (** f f,1c) si.ngle-cycle forced circulat* ion. iling kat er rect tor t hat produces stecri et 1,000 ps ig f o r us e in a s t ear -d r iven;t u rt,ine-gene rat e r. The react.t is f ueled with s light ly enriched 7Ud c-ntained in 2iresiny-; clad fu.l r,:t, and vsater sarves es a noderator end coolent . Tne ' reactor ver s el has an

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irs ide diomet er of about 18 ft, f, in., and on I.nsih height between hsAon s tee! 5/-3N, Gra' de C, and t he vas.t.'! t e r i,' r is to be clad with Type 334 51 -inles! steel s plied Lv wc!c cverie 7 .-

reacto r ves s el and t he r ec'I rcu lat sn s ,S t en are cent a ined :ns?de the Jrcwell c> f a p r e; s t, ri s u pp res s :c.,r. con t a i orInt sy s t er Prim ry c.'ntainmert cf.r.s ; s t s of a p re s.s u rc t upp rn b lor, cot t . ert b

syster u,tcr ra ses the rcact ?r v sieI, IN react; r coolant on *! r ec i rc.. ' a t ; r...

l oc .,1, an : thtr tervice loops _connt :14 :. a i nt r: tac t c .

s i.e pres:,ur-suppressi . Lystem consitts of a dryic-ll, o pressure surpr < , ion cb er

( t a rn L F a cei') wh i c h s t o re t e large s s < le<' d wr t er, .o cnnnect ing vent

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t y s t e.7 between the drywcjj and wuter p<ci, isolot : p. valves, etc. The

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s e it hel prec5c re sessel -

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• pnerica! )w er port lan (24 ft

. dI. .Idr. O *1 d O. C) l i'dr i cyl Uppc r part i,in 34 ft, in d ?, ter, t h e v / '. r a l l

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...s H.ight of tbc drywell is about - 110 f t.' The Steel head end shell of t he drywell is f abricated of SA-212 or. SA-201 plet'e manuf actured tc A-300 requ i re nent s, -

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The -drywel.l is enclos ed in re inforced . , . con c.3.t re 9,

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) purposes and to provide addit ional res f atance -*to 2

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above tbe sphe re-cylinder t'rans it Ion t he .dr. ywe'll.15, .

separat ed f rnm'tbl.

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r.* in f e rced ' conc ret e _by a ger 'o f abu.t 2 in.: .ke fe re unable t o a ce rt a in f rom the DAR. whether t he backup ilIllng oterial 'in this zone hos es yet been sclected. Shie ld 1r g r,ve r t he t an- of t he drywe ll is provided 1.y .

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r ery>vab l e . segmented, re:nforced sc4c rete shield p!ag. Fer access t- the d rywc i l , in addit ion to t Fe dryw-!! head, one dnUble door airl ek and me The ;ricary con t a

• nrnen* t y s t c.: i s 6t.s c r : t ed i.

bolted hatch .,rc t r ?v ided. ,

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detail in lectjor, V-1 ref DAF-Woluge 1.

. /. rs. actor bui ld;ng, wh i ci prov ides, s ecc ndc ry c;ntaint mt d en the i _

prima ry cont a lnment is in serv!s:c, svelops si e. react nr oud the p *- '

containmc~nt syst dm. . t he ceplete s ecoridarf ce:nt a inment . syf t em i ns;;ts 21 the rccci r bui1:1 ng io;ct' er . t b t r.e ocs 5 tan D; t ri etwr t L,.!M .9 the 'In-it. i. t act The , rs scu.r : t. i!Jinc pir v idet y r ? ; .rf c nt..i w !  : e r.

_.. .. t ne ;' res s u re t u,y to 5 ira :y icm Is open. The coat t ar l . ' Mini uut"-

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ref ue ling and r". ct:,r serv isc cqc n .t , new Or.d y. pen t'. f oc ) Lt rs .c c 4 '-

and ot hc r reac to r av.w l ' ic ry o r s c rv lc c c c,u i pr-et t . ,

T he ree:t c r tu i l ' t.c i5 to be' founded on rock tlc snN t cct a re!,' c'erk ; t - of pw red- ic h. ,t reinforced concrctc cxteri 'r ccliF up to the b iue!Jnq ilcar. Above t i if. -

, fisor level the st ructure coesist? - f. . L t eil v r m e W ii imulat ed In'  !

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!!!. iturtrS OF STRESSES IN CONT ^1N *EKT '5T8WCTUPE5 IND TYPE I COMPONEM, N.D COPr.i.h7b Ch ADf?UACY Of 9[5fGN. ,"..

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Sources of St resses -- The prims ey containmentisyst em, which includes

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tne dryw:ll, vent s, torus, and penet ret lons, . is to de

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he 7 pressurc suppress ion chambe 1 .

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W-g;7-following conditions; *

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.5 2' drywell, internal des ign pres sure; 62. ps ig, exte rn'.a_ ,

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su::pression charnber pressure 2nd t empere'ture rise,;35 ps! maximuni and 50 (

retpectively. It should be noted thet (Fe'- 2 pt1 9 va lue, wb ich oc rmcil ly Indicat es e vacuum, in T4ble V-1 is et variance with the stat ement about .

cxternal pressure at midpage V-1-6. As not ed in Sect ion V-3 of OAR--Volume 1, t he as t ismic des ign of t he pr irv ry . cont a innant system, which is clMsified as a Clrss I--C r it ical Et ruct u re in the aforenot ed sect ion, is to be baseo on dynamic analyses using response spect rum curves corresponding te a 0.079 As i;n ei rt hquake. Also, it 15 st;:ted in OAR--/nendment lb . I that the A s ign will be r.nie to insure s saf e shut tiown for a graund ret ien of 0.179, which we Ir terpret to mean on eart houckt ha in; e grounM not ton it.tensi y a tt p r: x t :r.e t e l y twice the* of t he bas Ic des ign c+ rthquake','

The ? econde,ry cant p i nnent systrw. (or.s is t ing of s evera l p. rt 5 cs ae< c ri wd ec rlie r, and i nc l- f i n g t tic 3 7 5 . t . it sc k , is cc.ns i di rrJ c C !c.s 1-C r i t i c t. I ( t ruct u re . The reector nu!! ding is to be dis i;neci t o wi tbteni ,. n int e rnel p r.f s su re of 7 i r. a f w e. - r (ctmu t 1/ 4 p' il ./: t bout 's t ruc t u ra l t a ; iu re cno withwt pressur, relief.  !! is ncted in t bc 0 E t hist t he M e i staic l

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Ga;qn of t ne s t ruct.sr. teill be based c.n dynyric analyses us ing cccelc ret ion rusaonse spect rum curves which are b, sed on a ground mt ion of 0.07q. Also 4 ts noted that the design 'l. be'.guch t h.st a sr f e shut down can be rude J. ;nt c c round mut ion of 0.17 c. -

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.w s  :%:.4.b.:;e In Sec't lon V-3 off t i OAR *1(J, isi,"noted t hat t he plant structures

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will be des igncd to withstand , wind, loadingt'of -140' mphi .kiso it is noted

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.% . . .h. ;?. Ci .5 < t h.'Q '.;. 5.,' &  % ep>.y and that were such winds ,(xwit h i n;ft.hei . . nf/a,n des ig.f.,h,hi . ., . td ; 5! .'g y.i.',, . nrse '

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w m a+; g gir;,s .- ...- gr the site, t he' react .

o r,@p,3id e"capab.le,of g; t..

.,,,, y .il ,O6- .x J ' ,gf i.' 1 Dred

.  %- h!$,$l.$ $1 L.I'8 M & 4C ..s.k In a sbutdown. . t. ' y o trade.9 y n . . ~. .;_In.hc&ponxt-2Nt R 2 :s

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.- f" b d'$. g:fgf k;,?.nw.1p+$, dings would' correspond.$ .' t,o 300$, '

n The crit ical pip'Jng and equipment .f alling within t he c lcs s i f ic.-t lan v . 3 .... . p , Q fl. ~.-

of Class I--Crlt Ical Structure or Class 1- CritIcel Equipnent , as ilsted in Sect ion V-3 of the-DAR, areJto be dejigned;toMithstand the same seismic f orces es nc t ed c. rlier fer t h'e prina ry and secondary cont a inment s t ructures, in

' connect ion with.cther-opplicohic loads.

, f e ismic Des ion C rit er"i -- In terms of t he cdncept emplov in; a bas ic des ign ca rt hquake, and prov is ion f o r Saf e. shut dov.n for cn c.rtt;uake of A.

approdirAat ely .twice t h is int ens ity , we ' concur wit h t h is cpi ra. ch

.o it is.noted in Section V 'J of DAR--Volum* l tnet t he vert .co l .

accelerr t lens will tx assumed to be eQuct to t m-t hi rds t oc n, r ':v t i 1 g r &.r a

cc e le rat i';n . Le i r.t e r;4 r e t t nit tc- mean t he t t he vart ice ! n ; > n> ,

!) in carrot ed in r e des i gn e.- rt hc.u: h e he'v i ng en ,iat ent it y o f tv.-t f.i r h t Mt us.d f o r t he t c ri:nnt al m it i.e . O r, t l i s L.rJ l ? w. ccncur ith tte l';'l r

• It is natca t hc t f r t he des ign of T ]r55 I s t r u c t o r s *. cnc ( '; u i p m , t , -

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the et xinu: ho r izante l acceler. t ion End. ti c mu :mur: virticel c'.cclerc* ion .

l will be cons ide rec to occ' r c inu lt e.neous ly.

• We & not agree cortp l t e ly. v. i th t h is s t i.t ener.t and its irplications 7s it stands,_but int e rp ret this to mean

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• th , thc r Kimum st resses t het- occur s irruitantous ly 6t a part icular lucetior t ram toth vert ical and nbrirontal excitot ion aris ing f rert the part iculor i

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des ign certhquake,gunde r , cons ide ra t ion, will"be Addtd dl, rect ly to t he ot her . i

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ths't our interpretatlont :(. . " . -sucor rect w ..concu rj.i. .!n,t he g,

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~ $~ Q{H ing

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f rom ca rt.w, hquMie);- --accel.,drct ions:shown on t he ' family,cof s 64

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s. g . 62 eT(we g g ;(.m b e l, lhH'h.p, 2.z.{ g' l(l ,

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} l;.%_r.hy4 s a ',diacgs kwhen combined a:yp r i n t ahh s. b. .

,it h f unct ic,nal loading st resses,. will be r.alnt ained within the est eb lis hed

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code of allowable workingi'strys es for t he ~ particula,r, p,terials involved.

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The meaning of 'that st atement is not ens I rely..cjeiri but in line with t he

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discussion presented in ppendix F of.Vclume II.'we int e rp ret the presert. tion s

to mer.n that a rigo'rous Ldynamic analys 's, of t he 'st ructure er p. rt icula r elemer.t involved will be mads, with pr~ ope r at t ent ion to t he rudal exc it at ions, codal pari Ic ipat ions , danp ing, tc. , and t be 5 Fc#rs, roments , :nd displ,cenentt t

computed accordingly' in ~a ' rigorous 3nd rat ionally acceptable rs nner to arrive at the st res ses and deformat ions . ' On t he as st.impt ;orn t hat this is t ne rxan ing o f t he 5 t at c V:nt , we concur with tt}te aprroach.

The litt cf dwping factert pro rnted i r. Table V-5 on page V -;

o f 'W - b lu me I appeart renon. r l*; t c us .

The re is li ttle ;nicr it ion r rc e :r.t(d in th' Did on the dvs;cn o*

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I t h-  : tac, ot he r t han tv i.dicct< thit it aill DO  !..,n d ! c c / t a C !c.,'. I ;t rmu r re i s t ume t h. t a rigor ' w l c c y n-:n i c a na l y s r. w i l l

'.'e r," n# h c : the stcck.

and that ca ref ul cone idt ret icr. w 1 be given to its design to insuru ti et ,

shou ld the re be 4.ny f a i lu re, it s coll:ps e will not impai r t he pr imary cor.t e i n-r ent In ot he r wc rds . the fall rene of 1 9 St?ck thould be taken into cansi,rr< tion in i t s des ign and p lac ca.r.t Eith re;rret tc the plant

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to setells erc given concerning the possit le st rengthening of the t rc c s c rc,und t he penet tut i vnt of the cont a irNe'nt . :pa rt icularly t he t r 'm -rv contelnment. f.s p ec i a l l y in tbc case of t he large: pene zat ions

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ghould

-, d,N iy V be token to Insdre that those Itims' will maintain the -

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'. r '. ,,,. y duct ility under earthuuake loading, '- '

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Primary etid Jeconde ry Cont a inment_ kt ruct ur . .- hehe'riil' c r i t e r i a -

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coverlr.c tne des ign of 't be primary and secondary cont aintnent st ruct u res cre contcined in vorious sect loris of the DAP.. and. port lons of t bese er 't er la have s-received coment s In t he prev ious - se.ct ion of t his repvrt . The allowet1 'trtf.srs for typleal situet ions for primary cont'alnment' 'and secondary containment

( ret e te r bu i ld ing) a ra.- presented in Tatales . Va6 end V-7 of Volume 1. (trases not ed t he*aln appear to be in cecordince with the applicele codet , 'r in other cases appear to le rceovble to'us. It s hou ld t,o n' t 'e d 'n i .t. tC t hotj h i nh pi ut du e la*,t I c c urap ,t e d s t r et s'"vo l ves 4, rc c l los.ed. In am ri tre a

, wi t h t he A$in C.odet.. ' f or s t res s cc,Eb i ndt Innt It loce t lorit of 51rit'nte dis cont inu it y, in tr.C rt 4,1 I ? a t ion t N t lot..! y i t ld ing ** l1 ) t de plac. l' t n i '. t. mc cor.t es t , in conrsct icn w:t r 'T..ble V- 7 , c ~ r' ti e d:t :uf tiin :n tre t h i ra pe rcoru;.h on paw V *$, it it tant e d 194t wi t t. ri S to t u t hs n . r l 4,. s ai.

.t.'.inq fro.t t he f C ; >r:lc l ac.J ~ 1,r, n f a p p r n ! n.A t e i-( ti<!cc th. des;on errtt o.Ai plub t L. t ht r ap; } i c a',1( l'vc - ". s - n d o f cc t ! * ., hod, ;- ,v i *. I n t- ..!'. i.e re a e f o r r ne r(;y obt o rpt ion suc h * * .it rt t. ult inc, cet lcct :nna c r c > t o r' ,.-

will nt.t rc.cnt t he p rop e .' t u tu t i e r og of t he if ruct ures or pir r! c' i pn.ent , ' .'c . a r e in ao f errien #th t his pe rt icul r cppranch, Tht dctcils of th_ pix t enct r.t ion dra irn for t h's s t earr.l i te s rs

.I.ca. ed 'n f rct len V-! r ' N E- "n i ev.-  ! .md i l g . 6J of rgA..ynjurse II,

. n d i , P. r t>*t r >f o t or c * ' .:nd :tm !! t ent w? t h ct he r

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i 11 it noted on page V 1-9 thtt t he drywell, vent pipes, and penet rat onsi are -

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do ignt d t o withstend r afely.t he f o rcer, 'couse.d, by the Isnpingemer't of t hi f lu hl , l i

f r ,e a rupture, or in otherwrds, the j et f orers , tlc Jou lonw. ,

of

. tr.' ,

t ie downs sind support s f or' Type, I piping, but .ansum.? that '

y p rov ided in c rit icil loqat ionst'o res is t the appropria 6,, 2

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- - , t a t%m incluriing seismic loadings, and eny jct ibrusts (of a %ec ta n gerne' n t 4 ,c

. . . . , , .m . . .* ,

typ". rat her then j us t a fluid leipingement) i rou pass lble i roken pipes .

^

IV, ,C 0 t:C t t,I51dN S The des i gn goa l Is - t o prov ice s erv i c estle s t r uc t.'r e * .nd cs -poni ot s rm rve of 5t rength and duct ilitv (a tvirs in of se fet v) t

• t w! !! u r ' t

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w i t b t.

the structur.5 and corrponefit t t o'br hove succet5iul!y un.ler pas & it le " t rt w icadings. On the basis of the. inferrat ion with wt ich we have been t vi'" i ,

"d, we be 11 ove t he ric 5 lgn c r it erla out. ! int d f c r t he p r in.. I 9 of 1 ' V C O ' . d e f '., Cttin-r9ent ! ,y'. t ems and c t be t Clasi !.tttuttures oculpma t end 0:ning .,;1I r .* hje on odet;ua t e rne r g i n o f s a f et y f v r s e i :. : c re t is t'coc e

'-; * : n f ": ~ 5 1, " 3 s ' t r' n t. n ii en lysis Frp9r!--Volun-e 1, " " ; i i s t c n e h .. r hw r i t so ,

T he Cennect Icut t lor t c od A-r ac.w. nw . (t c..  :-6'

. "3n ' :r. ma wlys ;t Ft- r t - .> i s.o 1 , " r ' 3 ! . t ' .co 'ati_,r c r- , .t..,",

I b t* ( O l', fi t C t e C U t s I: ht O f i f. E C1 f POD'. t tt 0' b

3. L'".' n cod nnilysi "a

• r' r t - - t.s s : %. r. ! ?... ' P '. i l '

E 1. , . fi i it ' :T ,s a

. it.t wn. Int Connacticut Lipht u nd Po,a r R pany , et .. . J ..a'<y '!, I"f r .

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