ML20091L227

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Sixth Bimonthly Ltr Rept for 800921-1120 Re Interagency Agreement NRC-03-79-167 Re Soils Issues.Related Info Encl
ML20091L227
Person / Time
Site: Midland
Issue date: 11/28/1980
From: Mccallister P
ARMY, DEPT. OF, CORPS OF ENGINEERS
To: Lear G
Office of Nuclear Reactor Regulation
Shared Package
ML17198A223 List: ... further results
References
CON-BOX-01, CON-BOX-1, FOIA-84-96 NUDOCS 8406070386
Download: ML20091L227 (38)
v • d • e


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SUOJCGT: Intern ;cncy A;,rc-cocnt l'o. LTsc-03-70-167, Bi-contbly Letter

!!r. Caorp,o L. ar U.S. i!uclear h;ulatory Cc.:risalon Caf ef, ;iydrologic a deotechnical i;ngr. Er.

Liviolon of Cn;;incuring

!: ail Otoi ?-014 LMshincten, N 20555

Dear fir. Lect:

This is tho si::th of the lit-centhly Ictters requirmi by cubject Jntern3ency carcet..ent. The s tatuc of thc-i-cr.ua-requen c-el-tr - tpr-r. gree-enc-it,

,.t o.i.:x; E. - - --

the follcaitu paragenph i.

f.ff ort e C.r.pleted buriu ; t he Period 21 Septenhor to '24 I;ove.bor 1760

!!!:'iar '. Action can cenpleted thia period by liRC concernin,; the takt ug of aduitional borin n.

The addition.,1 Ir. harJ n ;c ur:t na tal:en by 't no c r.e. dcM.. '

T.one relief van granted by eli..ta:rtitu the SM'c for couc of thu borin..;n.

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.locatioco of the borinl;n to ha tahen at the coolin.; rotd dikes are being roviced. Tahing of district c :ployee depot.iciotta for tbc ALLh hm.ringo van j

achadub:l for Octol er but dua to d;: lays in takiag if%C senG dernaiticas, these j

uill bc rouchedulcJ. Interroantorica have hoen prepared to be ccked of the applicaat aal ito coauttltanto durint; the takin; of depositions. All thic inforn.* tion vill k -tr/ d i : c ri:cti : "J :'

.;r."it-en ":rI-::ty " + F:r.tica

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' Enport (SER) and preparing tha tectinony of.the AGLh hearin:;s in fiarch/ April 19G1. This Wrk ic preparatory to conpletin; suhtauhs 2, 3, 4 4 of tha interoMncy nr.ractent.

I lailIy. There 1 nu bacn no activity.,j i.m um..w.aat7ir ;,U m ili'JJ7et* "--' -"~ "

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toving. An ASLU bearin; uf11 t,e held to dircuna uhethcr or not the i

cer.atruction partit. chould int er.cended. The pile inaua tany be brou;,*;t :p at

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the hezirin;;.

'!or'; in continuing on prepari;t; the decf c SC;t an.l.treparin; additional ;;cotechnical questionn not eclated to the pile issue. - ;ir. John -

Crt!n.le t etra the load revicuar for t! o n.2111y Plant-ban t.cu becum a peruanoni.

coployen dchln the Ocotechnical Ln;;ineerina Section.

JC In preparing an intce4;cncy acece.
ent nodification to f aclit.fc n" full tian pile tirivLn,.; c::rert ou rito durin; tLe pile drivin,t; r.ctivity.
  • iho pcet:onuct to han.Ile thia uork iu to bo gcvi. led by the Chica.;o Jintrict due to the Datroit itistrict's ~

linited stoff.

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FOIA RICE 88-96 PDR 3

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Intera;;ency A:y. rec.t: nt De. IhtC-O';-79-167, 31-Honthly Letter 1,1 cnnt cf Dsads Yman.!ad I

i Site Ercn 1 0.us 60 to 31 Oct TO Cuoulativa Midland S 15,S63.76 S 94,255.00 Sailly

!!jl7.50 61,GS9.95 S 24,4al.30.

$15 6,'>5 4. !;r, Total coat:2 throu :h !Y a0 cre !!idland $65,066.12, r,ailly 030,953.50, total S147,019.62. Lcaitication 2:o. 2, increaala3 funda to $204,000 was received ou 25 Sep on.

i Problet:c Foccuntered or Anticipated The four f.RC spaccu allotted to the District crc :;ood only thru W 61.

Recruitnent of ht;;hly qualified porconnel for only one year, or less, is nearly it.possible. The vorh uill then likely be conpleted uith the presur.c dictrict ctaff. For the liidland project, an Si'R is to be coupleted by the en.1 of February l'J61.

In tores of r.wting the interagency aqrcernne rcquiremnts, this docuuent vill be core than a draf t but lens tnan a final St.?..

With the docuqcat to be completed in February 1981, the draf t uill be considered to be couplete atvl a si;;nificant portion of the final SCR will be considered cccplete.

Proarens Gm:. ary

!!1dland. Subtack tio. I letter report 10 considerc<1 co apicte. Work on subtask 4

2, 3, and 4 to prepare the draf t and finni SF.h and preparc ACLE testi. ton'/ is unw ruoy.

Milly. Guttack Ho.1,1ctter report ic considered couplete. Uoth on cubtach 2, prepar:ttion of the draf t SER isSundelvay.

Plous for the ;!m:t !!nnorting Pericd 21 Novenber G0 - 20 January S1 hidinni. Interro; atorics uill continue to be ' prepared to be ached during; tho tahinS of depositienc frca thu applis:snt an.i its concultautc in prc;hration for tbo ASti; lu:arin n resulting from the 6 Deccaber 79 chou caut,o order. t.11 3

deponitican are to be coupleted by 23 Jantv.ry Dal. Tha District vill hear key dopocitions as they ara'tr. hen. Tho'Dictrict will ha pecpacin3 part of the testirony for the AtiLO henrin;;s. The content of the testir.ony la primrily the satie an the content of the SEP..

Tho Ciutrict, ulll be uorkitV; toward co.1pletion of a fiER durin;; thic period too.'

The SER 10 to be coupicte by the cud of Fchruary 1531.

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SULJT.CT:

in!.ccc ;cucy /.gcccienc !.o. !::lC-03-70-lu7, 31-i cataly Letter t

Cui:.~.it aiditional queutio. s en scatechnical coacarna oi.ner then c ie T,3111v.

j f omu.ation pile f acue.

f.f ter n:t ap;.ropriate regoaso la received ircu the pplicant, t,ork on th.:. drat t '5C'.; uill continue.

I General.

1:y letter dated 2 October 1930, the District requested tiett cil uail f ro.1, MC be dircett d to lir. ' cal is. Celtri og in lieu of '.ir.

Enuhend. !:r.

Lawliead is no luncer ciirectly involved in the 12.C uork cf fortn.

By mkiaa t.h t.) chatea, all correcrondence vill be hand. led facter.

Sincercly, M,b b

'/'P. licCitLLISTER Chief, Un,;innerite Divicion g,..('

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U.S i aclear Reculatory Connicair,n, Director, Divinion of Systens Safety, Uachington, LC 20555, /,TTil:

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. ways le lengthened to 8,000 feet and strengthened s l,oic finnt design grade, speeded up consolido-a I

tion of a pour bearing soll underlying a runneny ; to accosamodato Vt aircrait. g ye r'unway extenL Tl Gliennion at the.Wral.4uziliary 1.nnding Firld, Dion p<ued a pnablem for the only p

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' cause of this poor foundation conditi'on, it ir River,is a seaport satcIlite of the Navnl Air Sta-4" y$

tion,' Jacksmville, Fla. Arthing facilities are decided to conduct 'a careful investigation with" 11 under construction for CV-Il clavi carrien, whwe the am.istance o't BuDock's Soil Muchanics M'

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air grcups will fly in and taxi to aprons at shipi. Section. yff, f.H.id B [. ft c.

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%@ 'I I A plan view of the runwahxtension is shown' M..

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on figure L Dorings were taken by an engine'er..

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.f.;d ing drvice contract, and..undistu.rbcd 'enmples' ', d'~hM s l

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basin on at some time supolies fill for surch I*.N. r ~.. '. M...A 4. (. i l f.i ],si f,i, ! l'.

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. geneous OII. organic clay (Casagrande classiGes.. #.

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c car t s e i; g hR

.. tion) having higli compressibility, an average 4}

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and an average moistun content of 142 perwnt. 9 place wet um,t weight of 83 pounds per cubic footPy

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_". d.".hs natural state, it has negh. ible bencing i u,3 c

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t value.,.

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,., ['. [. settlerisent. time cu,rves 'of

-- [. l

'. A. Consolidometer tests of the samples gave thef.-j f.'d ^

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,i based on loading equivalent to that of the pro.

s g

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/" W posed permanent lill for the runway and taxiway '.. j f

..%'i. '.*.8.lE3. ;g.,. tension.

As is typical of all fine grainal, rela-QcM "MW)h.4 i

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ex

w. gg. g.g.9,ggy g.4 Fisure 1.--Plan end typical.section o' temporarFa

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j,.. hydraulic fill to speed up consolidation.] *!{jf,],

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"1 eg 1-were shipped to the Bureau for analys,is and ree-,,.,..?2 -F[iEL D W"'.;s 1,'.N h

[, g,.,

~ornmendations. As shown by the soil proflie'

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< C7

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(fig. a), the muc. !ayer extended to a maximuta.

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depth of 14 feet below rneen low water and was

[ g.g l g~{sg-~{'sii.j.<,.fr yj

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underlain for the most part by a good bearing.

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stratum of silty sand and shell. The profile also

.,...,1.

, f, ~M~ $ Ji ;

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shows an old drelge spoil ana near the m.ddle.

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, of the runway cztension, which had alivady de. '

. 7

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pres,ed the original marsh surface as much as f, I i

, ' 5 ' s..., ( _ t/ %,.,;,.ir, 1* '.

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yg feet.j

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Inhorntary examination of the soil samples dis.'.'

P bl )^>

Psvre 2.-Proi,le on centerline of c3osed that the material was a relat.ively homo * !.Q

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stratum oliand and shell under much.

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W~ :- ,? .t. l [ 2, '.} ~a q. ~> tiwly. impervious soils, i.t took time to reach 'an .'. A system of sand drain wells also undoubtedij.I 4 equilibrium between the soil and an applied load. would have reduced the settlement time patisfac-Initially, the excess load is carried by the water torily. Ilutin view of the relatively high unit cost t

[.

in tho' voids of the soil. The excena hydrostatio of drilling and fillingMdraina in a thin stra. of," or " pore" pnwsure causes the por,s water to flow ; turn, this method did not appear economical. The 9 away inmi the stresuel zone. Gradually, the load .uae of sand drains would have entailed a consid. - - [ [ )' 'is transfermi to the wil graina, and consolidation erable deJay because of the time requimi to pre. ', takes plam Equilibrium is reached when all of ' pare a r3ew contract and, mobilize the necessary 1 - g%* i tb lo.td is carried on the soit grains and none by, specialised equipment. Furthermore, as a con. ' ' ) ,b.' . p..., p, - nn.. frha. velum r~lneti in i: Mr' t :, tract for dredging the, nearby carrier turning.y 7 basin had already been started under an earlier f the vohone of water that esespes from the satu. WA(.j I rmted soil.- j..j ~ ' appmpriation,it was desired to place'all the avail.j Zi i '.. 'n N. $~j i , it will be r.oted that the curves of Agure 3 indi. able hydraulic fill in the runwmy extension, ares.1/. t [.y 1 tate a scrimis and fairly rapid settlement, reach. without interruption sind paymetit of stand,b'y'.tjf/,., g rp !"X "P t' 14 indas and to about 50 pen ent of total tiino for the dredge during installation,of}? ..., t v. "I, '

,,.h '

settlement,,m one year. After that, ther curves drains. The Diretor'of the Paving'Inspe'etion and f Itend to flatten out. Testing Division, Sixth Naval bistrict Publio '.9 ;L vf 'r. j,*@; [ Works Officci propoecd that ' consideratio L given to neceleratingthe consolidation of the muck i'. g, ' u -t m p i., k, gNM d . ~ k ' ',, lay r by teniporarily inervasing the height of fill ' d { Em to be placed upon it. ~ Studies indicated enough g g i i w l'g g d._ good material couhl be pumped in from th ( IN 7- ! (_%- 7 ml-,: t,] e ing project to provide the necessary piennanent - a.i ) f *I, N' J ~ l fill for the rtmway and taxiway extension, in-( w i I N ciuding shoulders, end zone,and a circumferential ' s c !

  • N-I./.

- patrol rniid. Ily piscing an inuch as possible of ' l l d. ] !-l \\ the available sand over the areas to be pared, a 3.,- (,.

  • J-e.

surcharge about ten feet above final design grade 16 would be created. As the snar=h elevation aver-- . s.....,m.

  • y agal about +4.5 feet above mean low water, and 9

. finished subgrado wng to k about +15.0 feet, Y "" ~ ~* P 'q this scheme involved building a 20-foot fill (to

  • h ! " fi. vee" 3.iiime.untement evevn foe mock %nder s

proposed permanent hil show fairly rapid attlement elevation +25 feet) which would be graded back l of about 50 percent in first 12 months. down,to runway and taxiway elevation after con. - % ((.

  • 5 solidation. % surcharge would roughly double

~i .g

c.... (-

i, t i . Several schemes for mlucing or accelerating the the presure on the underlying muck, as compaml '. jf - wttlement were studied. The Ilureau first recom. with the load of the lower, permanent, fill., Thia

  • s.

i' j mended mlucing the settlement by excavating would almont double the settlement taking" place ' h about bit the depth of muck,thereafter allowing within a given increment of tima. J n ~. }.'. ' frnm 0 to 3 months for coupolidation of the re. As an esample, the curves plotted on figure 4 * - ,)y mainder umler tlte load,of the fill to be placed show the conditions for Station 6+50..Without., J I forn constructing any pavement. Innsmuch 'na the surcharge, the predicted settlement was 5% b, -i . ' j [,' the ipml of com.olidation is inversely propor. inches at 5 months.. With twice the load, 5%,^<. l 6 ' y,' tional to the square of the thickneia of the laye'r inches of settlement would occur in only '% 7' l }; undergoing consolidation,.rnnoval of half the months. Thus, by overloading with excen fill, r thickne a of muck would have increased the'apeed the muck would become overbmsolidated,' with ' g" - T of attiement fourfuld, and the flat part of the respect to the load of the final fill, within Icas than [ j curve would have been reached in about 3 months. 3 months. At 2% months, the accelerated curve.. -- i .t.,,. tss' le .s - Meun &IW.

~

, h* - l.y '.,, ~ ~. %.'.,A M-y.gl %. v~~ ws<u..d4. sam.J4 mg-y ;.m_r.;.;mt,----4.;;;:.;w. f,';;= m-l., d'ip ( i s s n. L i

g. g.. ~

et .WA. . f)r I inificatGe'tth. ment of 8 inches, which is about area, and $300,000 for b unloading or grniling. 3 ~ i tb same as the ultimate settlement on the normal down operation, a total of $427,000. Timewise, 8 ' D.'curvo,i Thus, if b surcharge were"remond 'this method would requin about 3 months to com. ) J l after '.1% montha, bringing h area at' this station plcts the fW, about 4 months for the settlement nte ~ j l FI i to finished grade and paving,the much thereafter .to reach a satisfactory value, and 2 months for li'J would be fully consolidatel and no fuithersettle-y unloading and grading to runway eleration; 9, j$3 [ meniwould take place. L*: Wl .% months in all.W c 4 : 4 W Y ,s /F . I5e success of the surcharge method 'wouhl de- :.. The Officer.in. Charge of Construction, Capts M[ pedl largely on the perviousness of t'ho 811, in } W. T. Eckberg, CEC, USN,1>PWO of the Sixth, E 7 order that water expelled from the muck by tb Naval District,. directed 'that tb surcharge ' is.creawd pore pmauro migia ' raitiod readily. -. method lumployal, and a notice to proceed with

  1. ^

d i %7 l The fill material, consisting princip' lly of fine and the additional diking and increased height of till a medium sand with varying proportions of 6 heil,, ovier the runway ~nnd taxiway extension area.wus s. I pp M" g das sufficiently pervious to permit the drainsgo. issued on 11 July lost to the Standard Dredging

.: In::nded. Ce,:.:!denbh d=!.:;;: renid cho" TA "" a chance order under Contract NOy-23917

~ - h. _be expected from b lower surface of N muck-for dredging th carrier turning basid.],. g f.. i i *M f-einto the underlying sandy stra. ta. ~ '.. + .l.. }, .Coniparative cost and timistudies for the sev- -. o.. c s.. C i i

j eral methodA indicated that consolidation by sur..

t i 6 i G .,J charge would prove the least expensive, not con? l \\ F l-u: X _" i t e m t~s much. tim 8 end.e41.~ tL..u _ g( ; y ..,;3%s,--+ . v..; q .bg } l nmteriais to best advantage. Resulta of these." N .. rt ' studies were as follows: a1 ..,a . l.... {p (ii) The scheme of remoEing half the muck,5 ~ ~[ q which at Srst appeared to offer the best solution,' j. ~ + -F would have cost, about $600,000, and taken,9.( g. 'Ji@. 3) months' time 1-fore.pnving. couhl.begin. _= 'j ..y. (6) An alternate of the'above scheme was cons ' ^* ( 4 3 'f sidered whereby tb suction dredge would suspend 't.'.:"3" f r operations in the turning basin, cut its way up the '". ' C VJ I f"

  • YKY-"

) h~ o, j! ' slough, and pymp out 6 muck. To retain flota.. ~ } ~~ E l'igwe 4.--Comporison of normal ond occelerated. Lion, the dredge would han had to remon all th { g .la, muck, but ou h chr har,d could do the job,in.%setdeneent-time twves sho l .m

  • cluding backfilling with sand from tb river, in ; Y S.gf.# a
  • v Cg.:$ % Q'.vWM p

,4 to 5 months. Additional All.up to parement / Tlje Iurch$rge wh compidal on 50 SeptembeE Q' subgrade could' ban been placed in anotbr.3 T 1951. Settlement ma'rkers, consisting of 12. foot" ,7., months, and paving could have bean started abont lengths of 1.icch pipe wera driven into h 611 at I 3 7 months after commencing operations. Howent, f 12 locations.. The tope of th pipimerkers werd.?. - i this proendure would hen cost about $750,000. W ',,g*,g,3.,,gg'on + 26.0 feet. Surny erews*were7J ~ g ' (e) Sand drains would han ennt in tb neigh ' ansignal to take periodio levels on h pipe darkW.'- 'h.d[ l Tf borhood of $550,000 and taken 6 monthe for design, ers, result!'ng in the actual settbnent. time curvee.! i award of contnet, s*ul completion 4 to 6 months of Agure8. t ,y V , ;,:.Nf.T j[ more would han been consumm1 in anal Alling, Shortly after comi etion of the All, manSU $l q.j waiting for settlement, and grading preparatory 1 ' springs and rivulde denloped at intervals alongY g to paving. 7 e.i h toe of tb slope on both sides. At sonw points i c..: o h p; . (d) %e edimated cost of, conaolidation by ; h water" bleeding"out of the Cll was dark brown",' aurthergo amounted to $107,000 for additional'.or reddish in color, and gen forth an ofensin *i.i 1 Q j*p higher dikes to confine the fill to a more limit =1 odor. 'Jhis seemed good evidence that water wasi' . ~, .... ;y, .%G f,. t . cro neuena 184 s r;, . t,n., v .a. ~.... '... .e, 4 < :v 'M '4 p ry"; 3, '7W.7,$ESENEr%**@M4a@r[q@,:3.; ;.:y, y,ng..g.y :,y.g $,q:g. >.- . y ;.:. f.p. i M I'* 7. 7.8?eM vT'U.'W' N "*P!M T P."* c. r m.%1.s. .,.e_, i,..w z i t za 9 f ',' i /.I ', t 4ng ex;.elled fi.im the organic muck, as intended. There was n., noticeablo hearing or lateral dis-i Et >.... h p!xem.ut of the meek from beneath the edges of 1 3.c d{ l e t, l' 'I tho fill. ' 33% :r:.I l 11y carly January 10 r2, the springs at the too of q i io iopo had markally diminished, and by tho 3.

yp T

= ~ ' = ' ', ~. _ _ _ _ .N nd of February they had ceased flowing alto-. 4~g'tb.' i."t ty/ "v ~ m geth :r. According to level readings, the rato of p@Ik ,mi f '~~~ ~~* ~ '"- " sub.idence had lessened considerably, and settle-

-T

~ me its had been reached which were in excess of the]y 3.. i i TT.. g.g ,.[y tin 21 settlements that would have occurred under J,f, g.q;;'a.;.,,,,,, ' ' 't the permanent load as shown in figure 3. As a

i""

c%., '. check, additional borings were made and undis- ~~ ..y {f. tarbed samples sent to the Bureau's Soils ~ .. Figure '6.-Komponison of borings before and offer .' ab~ oratory, /N. I'III"8 'b'** d'"* 3" ".uck thicknen due to .. 3. The boring logs disclosed that the muck layer 'j[. had 1.cen compressed to roughly half its origirial thh knew. The average wet unit weight had in-of depth for the surcharge condition and for the creael to 10.! gounds per cubic foot and the permanent load after trmoval of the surcharge. .y) moisture decreased to 67 percent. Tie circled "X" represents the "preconsolidation The combined results of the c!.anges in soit Pressuro" of the undisturbed samplo taken at this i.?f strata as di.<losed by the final borings, and the station. The preconsolidation pressum is that changes in soil characteristics as computed from pressure with which the soil sample has reached . ;*P ~ consolidometer tests, are illustrated for a typical, equilibrimn, with the result that no po location by figure 6, which was taken from the re. port prepared by the Bureau's Soil 3fech2nics, exista with the preconsolid Tds pressure is estimated closely from voidw !C Section. The comparison of the before.and.after ratio vs. pressure curves plotted in the laboratory. .'7 borings clearly indicates the decrease in thickness In the case of this sample, the preconsolidation of the muck stratum due to consolidation. pressure is in excess of the pressuro which will re-i The right hand portion of figure 6 shows the sult from the completed rtmway fill. Therefore, computed preasurrs within the soil as a function no pore pressure would exist, no more water would be stueezed out of the voids, and the soil will

  • rMW ' d carry the lund without further consolidation.

s ,,u f As the results of tests on the other samples wero simila'r,it was definit'ely concluded by the Dureau ~ (4< - that accelerated consolidation by means of the sur.

  • 7,[

k charge had tak.n place as predicted, and that it d,-- was male to proceed with final grading ami paving .Q }, Y N without danger of settlement and consequent A y'*y i ' f*h*3 m pavement failure. f,,. Tie foitgoing is a good examplo of the success-N 'NY s w ful application of soil mechanics to an unurual i.f', foundation problem arising in the Geld, and dem-onstrates that such problems may often be solved ...-a...." /. J with facility if the Oflicer.in Charge calls upon C. the servicea of the Dureau's. Soil hicchmides f.y Fisvre 5.-Actual time settlement curves wm plotted Section. Irom levelleadings on pipe mothers. 187 .r.tr ms - 'q* (., N .\\ --s -'y --- p[M$9.f,.7,4-o4Tdiff*GYMf*7T'41@Id75.N+N:'"tmi' .O a'E*4 * '~n ' b'*

  • s

.:...v. e~ y.*. %q:.:yyx.'. M.:. * :.,:.- {...,*. ~**:. y" 'f* W ).,\\. % ..y,. m<] i,. y'3 *,. ; er -,,, r ;. s. .qq. - }: \\ ? q.>. ~, ' ~.

  • -. r ::~,

'/ ,,,a.-- i. _ _ _ _ }5 ... :a u f_, ~ - a y Cfb% 6 icd i m' 19 80 C3i c c= e, d.,:.~ j g, .7, k q y. t i. 4 ) 3- [ ~. -.<..=.....:,.. .l ..-~ ~.. y. .3,. .M... '.,. t Attact m.t 3 I W ig) CTAtti ggVCLEAR RICULATO.'tY C0!/.M115t0N J tralMiws1088.0. C. 2:385 t.. 1 .01492 7000-if 3 'g n FACSit!!LE *,'EMICE *.20'JECI j 6,7.3, BO 'f gyg g.. s. -eq _ 5 ' ',f.'. ~ ~ pdssrctto; Mdk Onq O tit.ICOPY ff M IA: .. '. B l an0mnC @ ' s. VIAlnu.710N WiAGIA

30. 07 PACIS P1))s INSTRUCT!0X IER STATI & CITY NKb.

C Oi l E IC$sA*I n0F.: 492 8 10 g,Ay1 ray.AV70m21C TII.IOC?Y LIMIT. 492 7617 3M Y1C AWOM71C 492 7371 j VIAlnCATION l'MIR s .I ( t

  • g...: *..,L ';
  • l l* :*s,.. -

l 4.i.1{} I l l &)Q f *** UNITEDsTATES. g Qn?. I NUCLEAR REGULATORY COMMISSION a wAsen=cioN,o.c.tosse b ' I p k. f s s g .r t HEHORANDUMFOR: A. Schwencer, Acting Cl.icf Licensing Branch No. 3. DL FRON: GeorgeLear, Chief Hydrologic and Geotechnical Engineering Branch, DE l s< SUBJEC( REQUEST FOR ADDITIONAL FIELD. EXPLORATIONS AND INF ~ PLANTf1ME: Hidland Plants, Units 1 and 2' LICEllSIEiG STAGE: Post CP DOCKET NU?iBERS: 50-329/330 , RESPONSIBLE BRANCH: LB No. 3 D. Hood, PM REQUESTED C0:#LETION DATE: N/A REVIEW STATUS: Continuing , The Consultant to NRC Geotechnical Engineerty Section, the U. S. Amy Corps of Engineers, Detroit District, has requested additional borings and soil data to pemit verification of Consucers Power Company (CPGp) - - computations and conclusions concerning the plant fill settlement problet and foundation design. This request was initially sutnitted by P. McCallister, Chief. Engineering Division to Dr. Robert E. Jackson, DSS, by letter dated 27 March 1980 and later revised in letter of 16 April 1980. We have enclosed a copy of this later letter as Enclosure 2. We have modified the Corps request for infomation since several of the items have been provided in more recent sulnittals fren CPCo. In addition, we have atteepted to condense the Corps request into the customary forcat j' used by llRC in identifying and asking questions and taking staff positions since this procedure has definite advantages in evaluating the appitcant's "he contents of Inclosure 1 have been coordinated with and responses. concurredinbytheCorps. We request that Enclosure 1 be sutnitted now to CPCo to pemit their Planning of the required subsurface exploration program. We recormend l that the explorations do not physically begin until CPCo has received and absorbed an Interin Report from the Corps. Receipt of this Interim Report from the Corps is expected by June 6,1980. This report will detail the required geotechnical engineering studies that are to be based i on the field and laboratory test results on soil samples to be recovered in the requested exploration program.

i..t.

This memorandum and Enclosure I was prepared by J. D. Kane, GES, HG,EB, DE. '.} George Lea'r, Chief HydrologicandGeotechnicalEng';ne,ering I_ Eranch flyision of Engineering cc: See next page. l

HIDLAND PLA'IT - UNITS 1 AND 2
  • ~.

CONStMERS POWER C0!!PANY ~ DOCKET NO. 50-329/33D l - QUESTIONS A'l0 POSITIONS-GE0TECiclICAL' ENGINEER f i PREPARED BY: J. D. Kane, GES, EEB from the review com::ents of Y the U. S. Anny Corps of Engineers, l DetroitDistrict Provide the boring logs for the following explorationsi (goul.0.4) a. Pull dem holes PD-1 thru PD-27 (35 holes that includeX 362.18 8A, 20A, 208, 200,15A, ISB,15C, and 27A)

b. LGW-1 thru LOW-13 (13 holes) l j~
c. TW-1 thr2 TW-3 and PZ-1 thru PI-48 (53 holes)
d. 0W-1 thru OW-3 (3 holes)
e. TEW-1 thru TEM Q-1 thru Q-12 (19 holes) the type The logs should include date and method of del 11tng,lde the Also please proy and location of samples attempted.

locations, boring logs and available test data of any exploratto,r completed in 1979 and 1980 but has not yet been svinttted. ~ 4 i The refusal of the Applicant in previous responses to Q2estions 5 362.19 and 35 to cceplete additional explorations, sampling and labor-Quesl.5D) h atory testing following the preload progr (RSP and testing program indicated en Table Q 362.19-1.. Several reasons for not accepting the App 1tcant's preytous responses include: 1

a. We.do not agree that the preload program as completed j

on the heterogeneous materials etch wre placed as structural fill is an improvement or would,necessarily Produce foundation soils of more untfonn engineering properties than if the material had been properly compacted to the original requirement estabitshed in the PSAR.

b. We feel it is prudent to independently verify the l

predictions of future settle:ent and the conclustens of the preload progrqa etch was complicated by the j i simultaneous ratsing of the cooling pond reservoir. l . In addition, an esticate of total and differential settlement is still required for involved structures following drawdom under the proposed pemanent f dewatering system. 362.20. Provide a discussion that addresses dether the \\ safety -related., piping and conduit connections with other structures such as the Radwaste Sufiding and Turbine Butiding dich have also been constructed on the plant fill now ex - i pertencing the settlement problem. f l ...:,o - ..; !.Q. F Enc.) t 6 i I 4 1 e Tabel Q 362.19-1 Request for Additional Explorations, Sampling and Testing a y l 31 W f ' 9/ l Location.1/ Depth Sampling Lab Testing Anticipated Gedtechnical Engineering Studies to be Required 1 1 Rits21 Generator IThru fill and a Classify samples For cohesive soils Bearing Capacity Building - ! minimum of 5' according to C-D (Consolidated-Drained) Settlement pg,,....,0; 7 into natural Unified Soils C-U (Consolidated-Undrained; l glacial till soils Classification . Consolidation 5/ Pc. iia l. p System, l _ quh:fg

  • c ty,,
  • g
  • 1 1

I For sands

. _ ([' '~ ' '-- --

.. _ h ., ' y -~-. -Draineo Direct Shear on both loose & dense spect. ..,g,, 1 mens Relative. Density ~ _........ - : g. a erviceWaterrPump! Same as above except con- -Pi.le and Caissjm Foundation Design tructure and Re-Same as above Sand o ai>ove solidation testing would. - (Vertical and Lateral Load Support) 1 mining Walls ' be limited to samples in

t. ~

xiliary: Building .- t p / retaining wall foundation. Retaining Wall Stability 8 Sett1ement. - 43 3.:. + a ~ 'i' For cohes.1ve soils. C:oling Pond Em-Extend thru fill " *l ba:kments,- ' and a minimum of h *5 * 'C-D (Consolidated-Drained) Slope ~ Stability 'C-U ICorlolidated-Undrained)g us f 5' into natural 3 "i.:.T-j..;'.'; ' residual soils ex- / ..- -. i. cept hole no. S ~ 1-fl,'M.P[ which should extend ) ;...u,.t,, ,to. bottom elevatioh icf cooling pond. g NOTES: See next page. 4

3..c x,

~< '..$}*'&w'}.. o$;.l5.,. w. /.' ve;,. e f-. _ NOTES: ';, l,'. bb,%.g. ~* y .O. .g E ee attached Fig. Q 362.19-1 for approxiNte bo ing' location.' Holes S to be accurately located in the fleid to avoid cbstructions, underground piping and conduits and slurry trench area. 1-y M o boring is to be terminated in loose on,sof) soils. 3 M ontinuous split spoon,sampilng using SPT is3 required. Holes are C to be held open C'-- --- ;" ; using either* casing or hollcw stcrs auger. Additional borings to obtah repres:$ntative undisturbed samples for detailed laboratory testi,ng shotild be located at the. completion and evaluation of the split spoon saepling progran. The f groundwater level should be recorded at the ctcpiction of drilling in all borings once the level has stablitzed. 3,.

f-

~. ,':v.. l 4 Hormal classification (e.g., gradation. Atterberg L'inits) unit weight ~ and moisture content testing to be perfomed on representative samples from each significant foundation layer. This column pertains to lab testing in addition to the above mentioned tests. It is requested that at 1 cast one week notice be provided to the HRC before openinga.s. undisturbed samples to pemit on site visual observation by Corps of Enginect representative. O The maximum load should be great enough to' establish the straight-line portion of the void rati,-pressure curve. .--.-........?_.... i, j .i q ,. s jL i I. I j. 3 1 1 g ' r* / i., i 4 g [ s.: .j. i. .i i 1 y. t g t s j 'L','3 .,.,3 p -WATER TREATMENT (T TAMK AREA OOLING TOWER

    • (

\\/ ,j vs e-., g -(Q_T**- Q,J m ( ) ~ E k HYDROGEN + OlLY WASTE STORAGE ~ i . i. i ~ l ((" 4... R ADWASTE BLDG. I A*=e AND TREATMENT TANKS ~ } AUXILIARY BUILDING ~ N b,, RL OCIR irU1uRE: N [ "N (Ftffuk) T NK N UNIT I UNIT 2 [ CONTAIN'JCNT, CONTAINr/ENT Coe % ,...41 .C-1." O Cog \\8 ... COE l b i i %,,sc"o .y*.. ,\\ U . DING TURBINE BUILDING 0 11 i s> t }' COE8 COE9 CC E\\0 + M U /-,ikh...., t_ 3 1 ft ,:.. vl.... / I I -4 y \\ r/.Q 'R =s-* t -,r pq .,, a e. ,a ~ 4 0 i R I F1 4,.If..,.r'. t.y %.,,'-" q 2.'.r*4 0 ! R !.T1 + Co E I5 "~' .," 't 4

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/ ~ .gI-s 's ( SERVICE WATER M** es

    • "5 s t-g4

-s .p % GESEL PUMP STRUCTURE - A.s s' .NERATOR *. e CCEl3_ "o *s*L-s CHLOR.d<th _ COEM ..-. %s GUARDHOUSE N ~ a.. s' 'LoiNa c \\c,-s $.\\ CIRDULATING L,. O E.R CONDENSATE ) -.et., n WATER INTAKE ../ .' Q;'.C STORAGE STRUCTURE TANKS-c, g{'[N O 14 7 2D ~ "'.,g),.;.',.,,'f-M 3 .. c: aN / I

  • 5:

COOLING POND l OtESEL GENERATOR FUEL Q p-gQ e . Ott ' 'GE TANKS -M i II Iil ll - il I T N ~ l I 'l I l l l E C ~- s w. ,, a to .o N _ o .e .+ q, n, y . -.., g W/ / i il + o u -.y0,/, tl/ 11 h) i _p 9 o @N +8554 l l m c~ + t. r I i i

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.~N;a o 2 f*-<re. .m.. oo p u '/. , i ... a, s?Cd. t ? O - :i 4, ll; l 9 + g,i .+ r 0 ) R(Lb - l;F: _ gr + s\\ + {+ + c / ..! / +l}s /c- + ikn. _' w. .r.t l s t.ec. g g +

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+ l !..a. .I4 8 ^k )!1 (I, n c + a-navmmun macuuauif la I N glp.LO w _T __.,1 I i i .i. l i -g 6 .o .g h 3 kl.. . h p

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SUSJf. cit he.C Midland Fropect, kequest for Mditionsi horings and Czistis- ) soll saca - uvision ha. 1 ..t .s .:. e .~. j 1 0.5. huelaar Re3alatory Co.wission I lie. Ko: art :...iackson ...s ...2. .. i... e.. 1sivistou c1 Syster.a Safety s. !*.a11 htop P-314 O i Vanctcgton, D.C. 20355 {'. .t 3.... :....,. ts. r 't t 'a s r ; i.;...

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.a. - ~;...=.. ;,. %:. ) i. ' Dear Lt. Jackson s s.... Inclosure 1 to our letter of 27 !!aren 1%'!3 bas been revised and attached ., i ~ heroco. Tt.e twa caps provided Lacaicatius borite; iocations rc:241n unch.anged, i [ TCR THE DISTi1CT E!;GI!! eel u,. + .s s..e t r ^ 6 t. t 1 ~

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t. a s. 4 1 inci As scated 4... i I...- . g F.. +,. e-2. i. .n .g.. N Copy furnished: S -. NCDED-C t / ~ - i s ? . :. 2 c.. 6: .4 s H..r. ... - s .o L e i 1 g [' .........i....~..,.-_...,.........j.,.*..,..... 5,,.! e i =-- + f IFCI.0$tfRE 1

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.. :s. :.>.:- ..... s. s - : '..- ~. ' ~' l. It is requested that the applicant furnish tre borint lors listed below indicatinr, when and how these were taken, the type of sacpling, and samples [ ..u e, k-h g y,: .. ~ pc - Pell down holes PD-1 thrti PD-27* (35 holes) - hi,o VW e i LN-1 thru LCst-13 & V-1 thru r-4 (16 i! alee)- ' )J' OT N1 t hru i'.;-5 4 v7.-! t hru PZ-4 5 ( 5 3 1.c i e s ) ' : i N':* 8 O 08v-1 thru O,-3 & @l~~i' thin UL-6 (5 iolyn L TEW-1 thru 71 -? 6 Q-1 thru y-12 (19 ti. tea) .i

  • 1aeledes SA, 20A, 208, 20C, 15A, 155,1: C, & 27A. ' M

'l* ". i +".t r e.: 'd'** .a. .. A 2.1.ocaticns, enfin.e. lor.s and test data from any other drill holes taken*in ^ 1979 and 19s0 are also requested.

  • w 4

. s .s..- - :s..* i ' $. Dutch cone penetrometer data from holas P-1 thru P-33 cuat also be

  • /

provided. \\co P.9@ t M

  • Q o',

p - - ( g,,, Q; 4. Inforcation is requested on all pienneters ti.at vera installed to nonitar. procleus edated to plant it11. The intormelon stiould loclude tee neter and Iceation, the time of instellation. tre type of filter arour,d the piezonacer, 9 ti,e installed depth, ud the type of piccoacter. thp c h Av.A i ^ f:tw (, ;. I O 'S qj s pve p.

13 < -

5. All yteroceter readinr.s for each inst.allation wi e dates and tit.es are W required. ~ ~ ~ I s.. 6. The data and infornation recuented in para *raphs 1 thru 5 above is needest to verify the applicar.r's co.scutations and cor:elusione and to nate any needed 4 cocputations for the dewaterinr, enalysis, et,e setsuie anal-sis end tila settlerent analysis. .e t s :.

i j

7. A noud exists for additional hcrince, ainee randon explcretory borings throu :hout the plant site have revesteo ao &at, of e af t ele.,'> gubject to" { settia. erit and ne consolidation. and let.rse saada suo.tect t~c lia,ueinctier.. A nee:f alen cists to ched. tb> rasulta of the preposed re.tental rio.eures of l adreharr.s loadiuq at the Utesel Cenerator building; ar.d the dewatering plan. I In the can of t!.e trinael Leuerate,r hulldia.,. check borints must bc s. made in the vietntty of torints vrtich 15:entified ice *:;" v. luce to t!.4 clay l end aan! fill. It.o proposed borin tm ahnt,1 ce carried into the placial till 4 an.1 all acaples, including those in the r,lacial till, tested an incteated i ) below. ..r' .#.py,nf>4a.

s....., ; k. f 0" 4 g *,

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p... pc.,j.; [* j,

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,), a.. p. ' at .Q .b ? .,b n ../. b.. Q.Y t h. 2 b d s () g.. &sg 3 1 f i s t ..... ~.. -.. -. ~ - - - - - - - - - - - ~ p. .-- g __-_,_-_.,_,--___.c. _.,.._-.m. .~,. .,,,y- s. h gd t'#,/-- 'h *. [ .f, f ..../' l .7 1 The hortoc locations urs as in.iicated on the attached tap. All soil for the slkl f uti depttt et the horis.:s snail os classtf ico accordina jo the lattled toil the soil en411 be Any tests necessary to ci,sssg) unspica unould also .j Classification Systa=. Unit weir.ht and r.oisture coatmat 01 g acco.tplianed. g ser. ries obtair.ed trou any {cohosive er. rata a:i 11 to te 1 d e te r-.loed. Thst caterial shall be a coase 11dat10 5 crained as,i uaJrained 7 'ibe tests :or cohesivt. [ hb triaa141 encar testa (n&a) and a.co;1ht Loa t4st.uitgrptruintnc load g ,, -- b - esual tu-tee. lema in.piace at the strata copt'\\tcu 4.::: pie ' represivits. T;.e p a I N.6 sands stia11 bu tested in direct shear f or a icone and f.cuse conditiors and th C f .. Mq s.? rc14tive censity c1 tsie saud in sitw determinad. Q gy g s. i p O, b.M J.. !,,.. 1 . e, - tm b. khere pility,or $1saons are pror.on.ed to uaderrin the Aervico Water 8uildin=. and auxiliary r,uildina - teed vator valve pits which are lveated on I v fill, tee load bearini capacity at the bear 12:: nerata uunt be unternised. Tiws l cacability to resist later.il shearin.! stronnus t. set could be turtuced i:s lov i

  • N* value soil ausjt.cted to seiscic action cost 41so us detarticec.
  • 4tu came E

tests required f or soil sanpies ostained f reu tl.a utv uorings at the Llesci.. [ Censrator t.uilding shall also be made on soil saanies trca new horia.;s for ,gthese tN11dia.ta.) b.o a.h preev.v.6 en, rc.6 k..v.s.6 QMt.54 0 4. ~. w b.. W.

  • t w

i Igd The <:uestionable cito area fill rtay ttava a couuterpart in tt.a coolics M*.o e.m t. tea.td.1.. W 4 W wwe 4 'td hel..' c. ' pond er.bankr. cat which van c'onster.cted contcoperatteously with tLe site tille (I ) it in requestod Ct.at exploratory contint.ous drive trocin;;s te tah.n at a nut. tor'. _ of doturc.tions the coren as.d cast estasheents, nr.icting ttie sturry creach ,,4 cuenf f over.s which are so.ittively sealed. Tre apercxinate teriv. loct.tions .V are as indicateu on etwi attacr. d c.a; ct tne caolic.< pund. Upon cuspictiott of h _ drive boriu a secono undist. rubes ooric shall oc r.ase A4jactat ut tr.a ,k( i disturhoo torin< to sasole cot,esivo ac114. Tue tests on Lt.o soil saaples ot,tair.ec f ron ti.e Mrin.a.s tu the ct.iuiw,enta sbal1 include tN tolic in., te.ss t s., cat.s olidated,, d rained triaxial stear teatt., (cotesive seaples) ~~i.H4rier; 11 nits and all totis cicer.itice accorain-to the (,ntfied holl I 4 ",* 4 Clausi:1 cation Systen. Ito drive borinAs st.til ca cuntinously sar. pled usins; a 'st!' $*r, standard split spoon aanler. Tr.e t. ole shall tre tele oren usin; a collow sten 4 ' V au.ti.c or cap tur. Particular attent. ion casall uc paid to Jround water ,,, [ *covitions durin t and af tcY ccepletion of detilips. La tbc case of 1:ola 5, 1 the horin/, shouls be drilled to t.tos certti of cl.e cooliu> pad bstton.cile sto \\.'*(, renaisia.- huriny,s uced ;entatrate only $ f =+t into t.cdorlylug re sistal aoLis unican soit i,round iudicates a nesid ter furt).or 1. ole penetc.stion. s ' 5 N._ . b AD USA $.,o p A. 4 w w 7, 6. Sisaary of kequested thrillina 1 'a'. Diesel Cvoorator tuildit; 6 holed around ti.e perimeter of the buildtol:. !opics t.f all atrats froe grour.d siittf. ace into t6 e rincial till Include dowtSolic, croos ole anc_ surf a!.o c. cop yste 1 C.:sta,,,,to l e(iioleu WI D.1:ssitu recpre sion 4 twt sh44r, nuac11 tor (104 respi;.se spectra nt abli sit design cl.ack r.entionsd on pg.10 Q V11EoT.Intcriu ht.t!.4 MSI w'; F'. i MJ I l s w ws VM,,. :..t w q.h.Ah q ra. m p w. a,,7 [q,w., cM...hri.t.a : t ( u.,n m, r..., m..w.a n ,QQ '. l yM ) P "6. M ' > n t 3c s 1 t. k p.,.., .__.%..._.L l l ,,5 v.N s s I ? ' b. Take two boring,s arctied the propnsed support Auxiliary Euilding T-vrout$ed of lonsa sands an.: piitot or estisson forarenedis voit clays adjacent ~ to pile or c4126on ta stif ten piles and arijotrin. f round anninat lateral I loaainA. 1crined neeJ to remetrate to'llac'i's1'till. (see attachec cap for l borin.; locations - tioles 4 & 5.) 4 5 c. Service Ustar hu11dina - A bort'nt (hole 16) shall be pode as indicated on the attached i,ag town 4 into tt.e glaci 1 till. All soeptem obt straod aball 4 he classificJ acent: int, to tua L'ultitd soil C.lassification bysten also Q.ussolidatiou, drair.ed and cudrained triasial coupression teatu uade ud con.isive soil sa. oles..ar.J i:1 rect suests zur a loone a:us conse coudition stall I \\ be tsade on all ;ranular soil sas. pics, as s,,4cif tad in parat,raph 13. i 1 Q% QA :,u w .}f$1}'2

11 ~ 5-b

/s-Q ' gd. Plant Arca 2crisgs - if femaaibis,sove borin:.s si.ould he taken undar y Q the f.sJ aste an:1 *urbine* Buildi.r,s to dstert ine if unvate. red pockets 4 stat or yv puraist. ~ Su;aesteftorir.: locations ticuld be as indicated on tha attached v 'f e.pusp. lurt1.or investi.atics ceuid ce nesced af ter the resuits of ti.ese borier.t j 8, t/.y arn octaiaed. ho uorin?,a presently exist in these areas. 'Inu cortigs should Le cesc3 ur hilov ste.a aus.or trocin;s vita drive ca.w.les every 2-1/2 feet 7 i \\ Enroo;h cl.e 1111. n.u-toies-onould.t,e-<os.verted to devatarin;t ' boles-or. used j for piezoogtega O! oles 1, '2, j, 6 & J). t _ c r g any 6.;. 1 y e. ':te site visit of 27 or 2H Tebruary 1980 turned up ttro dif ferentini 9 settluacut roints os cle retainina sail adjacent to LM Service batar Fuup Structure. Twu corings, l'olow 14 acd 13 an iudicated on t!e attacted rap shall be towns to tuvcsticate trils prouieo. '.'esta requiroa Arz co gulidatica tecta.Etrh ial co.n res41oo tests. Attar.Sery.11atts at.J grasation t.sats tudo on cohesive soila., and direct onear tor loose and ueose conditions and ,, te nte p t,radatton testa uada on granular soils. [ p,s g,3 g g g!, L 94 f f. la all new b.orings made, crte water table shni1 be datornined. yo r p R wnym L. ! C %; = < th = W.c.% ee pa.ay,h... r1. ,4 ?. .WRf c u Q,s,p ' .%g .;j y+ t ~ h 3 3 I. 1 d f\\ k I R 4 L ~. .I I .- m,.... ~ ' ' I f ,hf f /$/-fd BECHTEL POWER CORPORATION - PERSONAL RESUME NAME BIMALENDU (BIMAL) DEAR DATE August 1979 CL'ASSIFICATIO[i Engineering Supervisor (Group Supervisor) i. ORGANIZATION & LOCATION SFPD Ann Arbor BIRTH DATE. s/19/36 ORIGINAL BECHTEL EMPLOYMENT DATE 7/2/73 l RE-EMPLOYMENT DATE(S)

  • N/A l

NAME OF SPOUSE Gita CHILDREN'S BIRTH DATES N/A PHOTO DATE MILITARY SERVICE & RANK None l PROFESSIONAL LICENSES AND SOCIETIES i Registered Professional Engineer, State of Michigan Member, Institution of Civil Engineers, Londos EDUCATION AND PERSONNEL DEVELOPMENT PROGRAMS l DEGREE, CERTIFICATE, ETC. SCHOOL MAJOR (O'R SUBJECT) DATE I University of Civil Engineering 1958 j Calcutta, India Post Graduate University of Concrete & Structures ).963 Leeds, England Bechtel EMC Currently Enrolled s GTHER SIGNIFICANT INFORMATION PERSONAL & FAMILY: l SPECIAL IhTERESTS: i I LANGUAGE CAPABILITY: C s IEVEMENTS: A P Plt M TT Atef. / BIMALENDU (BIMAL) DEAR August 1979 Page 2 I f MEMBERSHIPS

  • Task Force member for preparation of Design Guide C-2.35 -

Support for RCS systems (Initial Issue) Containment Constittee Member - 1977 and 1978 i f a s 4 0 T l l \\ l WORK HISTORY COMPANY, DIVISION, OR POSITION HELD,

SUMMARY

OF ATES DEPARTMENT:

RESPONSIBILITIES, ANO

.s0M Tj!

LOCATION AND SUPERIOR SIGNIFICANT ACCOMPLISHMENTS 1/67 12/70 Engineers India Ltd.

Senior Engineers analysis and design of structures New Delhi India for a lube oil plant from initial stages till S.K.N.S.-Dixit completion.

3/71 6/73 Sargent & Lundy Engineert analysis of structures for normal and Structural Eng. Dept.

abnormal load. Remedial action to coal bunkers Chicago,Ill to correct local failures in their components.

H. H. Shah Report evaluating effect of aircraft impact and pipe break o/s containment on category I structures for Zion Nuclear Station. Report evaluating the forces due to seismic event for LaSalle & Bailly Nuclear Stations. Assisted in preparing design guides for coal bunkers.

?!73 10/74 Bechtel Power Corporation Senior Engineert responsible for design of Ann Arbor, MI containment internal structures for Quanicasse J. Isted -

and later Midland plant. Checking calculations 1.74 5/75 J. Hink of base slab for containment - Grand Gulf Nuclear Station. Preparation of Design Guide C-2.35.

6/75 11/75 Bechtel' Power Corporation Senior Engineers responsible for the design of San Francisco, CA pipe anchors for FFTF project.

M. Lin

  • ~ 75 10/76 Bechtel Power Corporation Senior Engineert responsible for restraints and

_/

Ann Arbor, MI jet bcrriers for RCS piping for Midland plant.

G. Tuveson

  • 1/76 7/78 Engineering Supervisort group leader for contain-ment building, Midland plant. Responsible for pipe whip restraints, NSSS re-analysis and coordination of internal structures and construction support.

sDuring this period significant part of containment exterior and interior structures were constructed and NSSS were set.

3/78 6/79 Engineering Supervisort deputy group supervisor and civil task force member for resolution of soil compaction problems for Midland plant. Took part in investigation and definition of probles, develop-ment of remedial actions. Interfacing with client.

consultants and NRC for technical discussion and presentation. Helped group supervisor by performing specific assignments to resolve problems.

7/79 Present R.L.Castleberry/L.Curtis Engineering Supervisor group supervisor (Civil),

responsible for Civil / Structural work for the Midland plant.

i i

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REDUCE CAPACITY OF 4540 EOLTS (ES.=l65K)

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Da M March 12, 1979 AMO rca 2,;a c7 jY MEMORANDUM FOR:

H. D. Thornburg, Director, Division of Reactor Construction Inspection Office of Inspection and Enforcement FROM:

James G. Keppler, Director

SUBJECT:

MIDLAND DIESEL GENERATOR BUILDING AND PLANT AREA FILL Meetings on this subject were held on February 23, 1979 and March 5, 1979, between Consumers Power Company, Bechtel Corporation and NRC. These meetings were a continuation of the investigation conducted by our inspectors during December 11-13, 18-20, 1978 and January 4-5, 9-11, 22-25, 1979.

During the February 23, 1979 meeting we presented to Consumers Power Company our preliminary investigation findings, a copy of which was previously forwarded to you.

During the March 5,1979 meeting Consumers Power Company provided their responses to those findings, cepies of which are enclosed.

Our summary findings with regard to this matter are as follows:

1.

The quality assurance program for obtaining proper soil compaction of the Midland site was deficient in a number of areas.

2.

Soil of the type used insthe foundation of the diesel generator building is also located, to varying degrees, under other Class I structures. Whereas excessive settlement has been observed with the diesel generator building, the settlement of other Class I structures has not exceeded predicted values.

3.

Several incorrect statements are contained in the FSAR with respect l

to the soil foundation.

In addition to these findings, we have compiled a list of technical que'stions which bear on the resolution of this problem. These are enclosed for your use in working with NRR.

l

(

~, d i o wiu r+v u w u s i < -

l

- March 12,1979

.p.

H. D. Thornburg r

As previously discussed with you, one of ocr concerns is related to why construction activities at the Midland site, which could be affected by a Class I structure settlement should be continued while the total cause of the diesel generator settlement has not yet been determined. During the meeting on March 5,1979, this question l

was posed to'the licensee. Their response was that continuing scheduled construction work would not compromise the committed evaluations or remedial actions nor make irrevocable any conditions Based which do not fully satisfy FSAR or licensing requirements.

on this, they are willing to accept the risk of continued construction.

In that we have questioned the licensee's intent to continue construction, we consider that the matter also warrants examination by HQ. This examination we feel also involves NRR for the following reasons:

1.

If one assumes the foundation settlement placement was in accordance with design, then the matter of design adequacy becomes questionable.

2.

If one assumes foundation placement did not meet design specification, one must question acceptability of the soils condition under the affected structures. It should be pointed out again, that the type of soils placed under the diesel generator building were also the type placed under other Class I structures and associated pipes and utility lines.

In light of items a and b above, the matter of seismic design also 3.

becomes one of concern.

4.

Because of the licensee's total evaluation of the specific cause for the diesel generator and plant area fill settlement is not yet complete, the question of FSAR design review sad its acceptability may warrant further attention by NRR.

As an alternate approach to the issue, consideration should be given to an NRC Directive or Show Cause Order which could expedite the licensee's confirmation to the NRC that continued construction will not compromise the design function of the involved structures for the life-time of the plant. It may also expedite the licensee's investigation into the basic cause of the diesel generator settlemect and its relationship (or absence) to ~other Class I structures.

is :,

t e ',

  • t y.

H. D. Thornburg -

11rch 12, 1979 k'e will continue to followup on this matter and keep you informed of new information.

&a.2y James G. Keppler i

Q Director i

Enclosures:

As stated 4

6 i

7 l

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MIDLAND QUESTIO:e f

The licensee has stated that the fill has settled under its 1.

own weight. Wat assurance is provided that the fill has not settled locally under:

Structures with rigid mat foundations as portions of the a.

auxiliary building or service water pump structure,

' Class I piping in the fill resulting in lack.of continuous b.

support causing additional stress not accounted fer in design.

How has the lack of compaction and the increase in soil 2.

compressibility affected the seismic response spectra used in design and therefore, the soil-structure interaction during seismic loading?

After current preloading material is removed will additional 3.

borings be taken to ascertain that the material has been compacted to the original requirements set forth in the PSAR and construction license application?

Since the foundation material is variable as described in 50.55(e) 4.

interim report number 4, how can long term differential settlement be predicted to assure reliable startup of the D/G in the event of emergency?

i Wat tolerance does the D/G manufacturer require on the alignment 5.

of the D/G for reliable operation and startup?

Preliminary information indicates that the piping in fill under 6.

and in the vicinity of the D/G building have gross deformations Wat is induced either prior to or during the preload program.

the extent of the deformation. Is this deformation beyond predicted?

i If so, what plans are being taken to correct the condition?

The borated water storage tanks and diesel fuel oil tanks have 7.

not yet been constructed and are to be located in questionable plant fill of varying quality. Wy should those Class I structures j

be constructed prior to assuring the foundacion material is capable of suppor:ing such structures for the plant life?

i I

.(

g o

4-g

" ~

MIDIJLND QUESTIONS 8.

FSAR Figure 2.5-48 shows estianated ultimate settlements which indicate a differential settlement across individual mat foundation and within individual structures. Was this differential accounted for in the original design of the mat foundation and in the desig:2 of structural member within the structure. If not, what effect does this differential settlement have on additional i

. stresses induced in the mat or in structure members such as slab-beam-column connections?

9.

Based on the information provided in CPCo interim report number 4, i

it appears that the tests performed on the exploratory borings indicate soil properties that do not meet the original compaction criteria set forth in the PSAR and specification for soils work.

What assurance is there that the soil under other Class I structures not accessible to explorator */ boring meet the control compaction requirements?

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29, 1980 mm a w

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O'FFICE OF THE FoR ID., AS OF l b

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to DOCKET !J' t,'CC J

PROD.& UTIL FAC...p y y

.t..,.......330aM MEMO T0:

Samuel J. Chilk Secretary FROM:

Thomas R. Gib Legal Assistaht to Comissioner Bradford SU3 JECT:

POSSIBLE EX PARTE CONTACT IN MIDLAND PROCEEDING, DOCKET #

50-3290M AND # 50-3300M On July 30, 1980, I had extensive discussions with James G. Keppler, Director of Region III, and other Region III personnel on general NRC enforcement issues.

During the course of these general discussions, we touched briefly upon the Midland case.

I have recently reviewed my notes of these conversations and have now realized that the Midland conversation could be considered an ex parte contact.

Accordingly, I request that pursuant to 10 CFR 2.780, you serve a copy of this memo and the attached summary of discussion upon all the parties in the Midland proceeding and also place these documents in the PDR. With regard to the sumary of the discussion, Mr. Keppler notes that while there are some technical inaccuracies, the substance of the discussion is portrayed correctly.

Attachment:

As stated i

l cc: James G. Xeppler l

7

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Keppler also stated that the Commissioners needed to express in one f orm or another the philosophy that once something is found wrong at the construction site, construction will stop in that area until the item was resolved.

He gave the example of Midland where I&E found that the diesel generator building had settled excessively.

They also found that there was no Q/A program of any substance related to the basic foundation of the site.

He said,there really wasn't a Q/A program in this area.

In response to this, the NRC issued an order which said that this should be remedied or work would be stopped in: 30 days.

The company requested a hearing and, therefore, stayed the order.

Midland is continuing work today which will make resolution of the l

settlement problem much more difficult.

Keppler said that the

' staff had not yet made up their minds on whether the fix proposed by Midland is acceptable.

Therefore, the project continues to be built and the problem gets worse.

He wanted the work stopped I

until the problem is solved.

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