ML20209B419

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Requests Info for 820201-05 Audit for License Condition 5 Re Facility Underpinning.Comments Will Be Forwarded After 820128 Site Visit
ML20209B419
Person / Time
Site: Midland, 05000000
Issue date: 01/28/1982
From: Poulos S
GEI CONSULTANTS, INC. (FORMERLY GEOTECHNICAL ENGINEER
To: Kane J
Office of Nuclear Reactor Regulation
Shared Package
ML20150F172 List:
References
CON-NRC-03-82-092, CON-NRC-3-82-92, FOIA-84-96 81907-1, NUDOCS 8206100357
Download: ML20209B419 (10)
v • d • e


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.OEOTECHNICAL ENGINEERS INC.

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'^ January 28, i H2 ]

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-- ' Pro]ett 81907 e

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I' . Commission i

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3; f.N(+4CW~ ' ' eeth Enteenstion_ Desired at5Audit of February 1-5, 1982 a

jc f e [g$ f,, e Y- Sechnet offices, Ann Arbor, MI 1 For?Edeense: Condition 4

_; p q p%,r 0 4f3. " %! Jb 5141 g-. g ; Plant Underpinning No. NRC-03-92-092 a

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. 3su F dn x,m. '.Beariser. Eenga **

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OJ d-(GBeed ea' oer ' telephone discussion with Mr. Hari Singh cn  ?

5 M:1 727,.1982 and on' my review of the document t regarding 9 .;4

% 'a Lag' of the Auxiliary Building, I suggest th a t the n h is s linformation'be' requested of the applicant as part of i P A W:1 -

'Li Conditions Sa throagh Se. !o

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,5c.- Por: conditions (a) durin 3 underpinnin-; and p) after 5 eenpletion of underpinning provide the folloeing:

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ii G (1)- Se locations in the structure v a on *w bearta; p >

, f' layer which will be most cr it ica ll - strussed. 1 M.

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(2) S e magnitude of tne stres na :n i >

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f (3)

( Measurements and freque'.c; af cu ? :ys 2, i us -. ij g

at the critical lom tiona a mon: t ur t+ ie,n f

during and-after cetplet:nn o

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mm 4

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%'q W ' January 23, 1952 O.3 ,

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' j , _ 1 hef 81907-1 f;[ b ', ~ _e -y c g m. ,(

(eg, Mr?he; movements, strains or stresses at "s , - y f~ , ,

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'x m ettering points.t Snow calculations to pro-y J n y([k d i * ****#"'"*"*"**'"***"

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, t x y< _. 3 V a v. 34 gees .si measur=4lmovesser.t or stress that

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,. ~ Ge W ' test 1s for De-evaluatior. and f or

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naimes Provide the eettmated time j

fa* j '! p yggi, , j. Qgy .the G eorvation of erLtical move-on-ep. &

j 2 s 4td fY . - 5; rn / _ .

. T"1 % Je: p ,( 4 :. Gering taning when the critical jE7)$ . yd j; ' , .

i tag and ccitical structura1 4 ,

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. u o e.

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=, x

  • N_ , S ts > Mapaped by the post-tensioning I g7 o,iz . .if

}b , $. } J .tehen intmaccount wnen evaluating the

' stressed latations. l g.n... en  :& , < .m 4 ;t e , y d j{ ^

l gangef $ ~eemment $ mecessary after e site u T C iflp-l ' en W.iW, its2 4th c ar. , enatten Samue1s.

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stacerely yours, 2

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. -_ .,,. , GSOTECDs10AL ENGINEERS I'I C .

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p

. 2-l l Me emesmang easeewed sa the eixtracel paratratax .s:.n se aa t te e

[ eastset emner 4mes amt esse to ime estessa n. N es sitity of tw st r a:-

I tese et Se eeWLesset emessetica teet oes tA*e* te olan=2ts an s c.

ausstanay ensaemog esmo as asetoc == re eee es esen ar to m. a:.

ammaammama se e . saal. 36. enevetsete. m :s n- *en t e s at it u est bass tee a;aeaW. It' is pnGat* Ele tMt t u f&1l =calt enttle a.s e f

^ i fees es m me Me CT to taso p& amer mas homesta shee. ,oce: sera-team ende as gene Se empteetog tata posth:11tr ant the ect.e 4

, Seek ette @ ga De hp6astag predetare.

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l and geseheat. to hegemet eresos ere eeseetet :.a e eenser a:e ae at #v

( e6M M M &en of the SufP6 release. ta t.no nat =e st r acta r . .

L e

k MIT1Th%$ EN M $ U @St4IE& M e$ er'lir* Wrl'. #*!*

[ emessese Ses mammassa mangen na esen en sessil es 2.**t 5. 5. c.

E emme one a enestapata= et tem ease eted wes.: er w as se m.

E t-j 2. C = e v; pre, t

I he* W es et to Metal mer 4 cast tear a t i st r et .n , toe,-

,e- ~ <- . e mesem , - , , .

i I b M W h h14g M f at S weTe el 4 $'L% i g be' Jew %i &.'*- gi a s .

M N N Y M MSTi%y. I h 's W 44 foi immil$1 4 euef = ..e ( -

! ** star mim esse ammewe=et mer. ** *e;** *as. e:N st<

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[ M W M % W tat t.the pt,pect wSuete e %et t j 6.> . h M day eentesme 014da e4er wer Let &#a4

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6: 9 6 h l eteethfbesti e. 24 oc tape., par 9 An es s' s O tenheunty met emme eeund an enes e,4e saep et.t. ce ee e ; m.:

! W 44 Mb. Se S/G 13. grasol ptaties este tws a me weg.e.

l h & Geum 8 m gem gees aqueged enen e peceswf, w s+. tu pera.*2 ; .

?

i 4 eet wasat e eng&e ese seten at +

  • wett aa of . per w m h M M M e$ W W sapet f we De**. * ? tei et ; w hb h @' em h $14em to $1 423 et %s4 e shs Aar i N 9mamente 49 D ha.m===J tt . $he f a as + so yere U r. ~ $

, ene me e m 4 an. gwee & Meus.3 :s se e an c 1. sia p.;r ** m **"trar es4At 44 st M toegasmes me h pisettetty. :te wt ae; ,-r m-amen . g g 1 gr 3n m ge g;sett e tLeat. t mt s a -* t - - * -

M ' M M . M Si T ( 4* ha - e& &* . Defe;y tea ~*?%1ie

& M mee Gestved. Dnet v gs= < t EA ge o et .? .ote

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== ime meesmo er se. se ramen. a v . 3.:. -, . :c.s . .

et a w ash J.an>agoy 4Lapet h.no e**4. as s+ 1 x

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PthE. some ene14 empeet to f &A4 e e++ Dr '.

  • m r t .re %av + -

on es 31 en tw ut. :t egysere tam

  • tM t lar r w4 as * - >

4t t.%* 3 pit:e* ef t** Dof es4st e.

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V t; f , 7 @ $t ses AeSeused that the hard silty clay bearing stra-

- . f; d h . 4 pen &s testi-has boen- crearridden by a glacier. The I

F M i %. se&&& ce6 dent .in the eley and, although the partings i

  • d$i'. thee una es cosykote remolding that is typical b ,

h, .e611. -St.

, therstore, D at this stratun is best L

C g .' Mx a e hope ey _e&ay that hos hen heavily overconsolidated by i fg C. 6; ef -e - dester.'

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@ gl , , -

6 with deyehe et 4 to to fe eere oboerweJ r " .: 1hWe genesotices were'esar various utilities and F tage 6 empteretion parpoems to ensare that they E P $ eagnisq W1ing for dowaterieg wells and

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. esceret& G.una located northeast of the g '; * . see.y eso, aarvies unter pipas hed heon esposed '

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3 gegregas @'e6ther brown $ah-grey silty clay or tan g ,j l b ites' mere preeest la moet of the excavations.

li5 :I k gameset&y weep horisestal. Whether one or I @ l :ta lthe thal W1y was dependent on its

{ %f_. 1) 6 assessorties. ' Stuas, one <ma expect to J D9 O

$Edh$$$hk&tM %NF & ST S 6 weerpiaming erifts end pits.

~

g 1; jE f sh W ee' _esgoeod was parthally dried out .ta the Pp

= s . 'W f W $: (Stellow outa into the. walls revealed a chunky g ,;,wt .

g g esists as rotattvely vedisturbed chunks, in g

M-c,,*g,sg[} - W . anskes, e%Aeh meet to have been perhed together

b agiyises' void spaces were evident between chunks.

E { .4plag ^ ..the emeevetion walla revealed the boundaries of

@- ,. v. ;Sately)el erly. es soliot evidence et ~aheepeswt-roller feet L

s O. am the se deep etoavation to the stity elay.

m -

e ,

OC l 1/

i$m eQ necesic s lay rs of the s11ty mand froo one Lnch to two

(_- . M $$m Wye Seena withis the stity clay fill.

h"ag 'm- -amame== unre ensnest entir:1y in si tty sand fiii.

, 3 'SW" gpessee selet19ely widely graded. Perhaps the coef-

,4 k # RJe&$estetty %Ame.4mithe range of 6 to 15. Laywring was

[T het 'm spee&Se chetesetione ~ of their thicknessee were ande.

h 9,

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the esity clay in these escavatices was .u f t or ur e. and tne atter. seed wee. sense someth s3 e.and <eit in an op n e; t . sone or en

2' emessatioes esteshi below the water table.

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I - 3; w-  ; 4h N W MDSRFINNING PITS IN FILI, w .

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.+

..Jy? WE p of send layere below the. water table within the silty NWf 3e84 .

_%- esse _tmeabl, esses; flows into the excavations. The silty E

{[2 g jStsoverfang$ ef:en ammiliary beilding tJaereganAmeAa is a natural silty fine T Q J]j.NI N8834 4.a M'vely 'etdo haed silty clay.'and may r.o

~

( fg feet thick eserlying theinatural have-aftendeney,to run. Thus, dowatering in advance

,f);;j'. .

/is 1spectems to nsinimise potential movements of the Q@f.j g QpqW MM; underpiasing. It .is for this reason that numerous

, T. . ISkS6..

xA. ., n g =

_ . : walk een heing planned % anchtel.

h :: 5' h. * '

, g* c. '

. *  % uh_ mettre'arrentlyfiaplaceJarerelativelyfarfromthe e

[ -

' .*ia.neset&ene dare the l fill is shallower than at the 43t' to' W to lasta11 a pit early during the

.Ge hoy 2111' ed to use this pit for gtts 'emy them he' installed with less likelihood b , ,

et p&es 'Sec. puging and pits for hearing may 93.with&a the- 36ta used for bearing.

E " -

y 7p 4 _. 4, r

, Mare:wkil to periods when'the open face or the

. , . my . egen- .If this period is more than one Goeld ha ttaken to support the face securely n M' 40 peevost megeant of the adjacent soils.

ir MO +

A, R* Ndh; .  :$Eu gS a d N.. a g

c gy,p ,y.

p h. y.'m -

g'g,.

~

    • M ice M S PIT (FIVP)

E Agn "M4 W<g r

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k , xe,

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[ . - SWge Det pass thsough Ithe FIVP were inspected to P 829 'ietfesta' of ditfeeential settlement between s 5- 4 n W streedure. Ca&y the west FIVF was M ., 9 <

g

  • w 91 # ,j

[

f W '$s 4 free 90. top by a grid of steel

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.,x

, ;, thr;esL;ee hubseces n -

. access shaft wall and on the turbine

'%,.p 7 ..M J >

v v 4, Qgv G F p-j .

a .e . , M . .

^

( , . . .

7 $WgD pipes have heem ,1astalled and cont.ected 'to the con-L  %/M (G 4..W Ge'emetherly;well of the FIVP. The pipe supports E "4 - DD of to amore dets the rIvy are 'not un ple.ce. The opening b [hJ _

haineing eG1 muwegh which the pipes psas has a 1 hf< #e11j eWund of' Gest'4 la. or more. Also, the pipes are sup-W s

=~ R getag-leaded esents within the turbine bulliing near the TIVP 3

J K , eW41.; See pipes make a te* bena just af ter the'y enter the .urbine y

g gk Q . ~ w~ 4 , u t a sr ta go 4 b

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e . 4

+ W&

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E:

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E

=~

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h. i n .. .. . .

= _.

WW W

.. t

, A WW 7" g v y w:y"%MA M q=y N=

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{ ki .' hh h @ ; iM*W r :G8., a n - -

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hjd9s(esslette.the allowable dif *sranaai mettlement of the rIvP, the

$ geNesties(m.sessNin' titese pipes should be checked due to (a) novesent Igi M M dy to M :wartically^ relative to the containment and (b) movement of (Noter

, 2 Streeses

- f N:gMNMWENYWEticallystelative 9

to the terbino baildr g.gMSdjXf M!$ggles.si.

isola- (

in w#M84$M 6 and6therefore, may not he safety-related. )

y _

The dif f e r e n -

g @@hi{ $@B %M $NW lhWogh stseeses^ehould be consid passent%t all times.j unless the pipee are disconnected.

. $%$d 14pidirocommeeted ar+st may settlement has occurred. 'the d.i t -

MQQ4M Lastklament:titet would emaseistress is the sum of all dif f e ren-

- N ..

thE4(hile occurred, oriwill occur, af ter the pipes m s E

y$M.g;k dW.

n ygAcny~sy e g;.

gam , , . .

(geettleap:}..

~a

,a,n, ,

I u,

w n., Mw a? 9 3.seStubek d e;v y. x-

- to obeerve whether any cracks exist on the q %. w w sne y

z.

bw im11e ..af

- ~

. gyeelte theplocations where the Williams rock I- p?M Wrpg . tusse-4aste$$etifertemporary Laupport of the structure. Thesa My

' %3astrate%9ew' Seet- into thettop of the outside walls.

b_J M!h@ifff M$ h esgastediat these looetions becaw.e expansion loada

- %Ndd$n$ms , h0enjeppl%.,g.

o $erlag installation of the a chors.

No cracks

= y+w- ,,

do ~ss M %%mn %Www/ a w$9 m

C~ '.,4 a +

s] &v ~ :  ?

7 & %W;.$$ gems me4%e ebeerve any gracks inside the FIVF between the f

WOWL the W ef;the outside wella. 'this 3unetion could crack i %4$@[ WW9erentimideeMag between the rock anchors in the well and the dM? ' M Mt#4 Penetrete the top sistid it appeared that a caulking conr-

~

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M w

[T.M-.,n_. W heen.. placed eti.th.is joint, but das to the

- amall (2 in . ) space, s_ GF ^$4T11bS~98W Weselb&e to athe a satisfactory observation.

s pm'4;Jgy,

% ~ w. z %f%m ww?kw ,x o . 5,

'*$ h 'p By;bettseer the FIVF wall and the containnsnt is filled with

_ . e t k

)[$dQ'

' ^

% Nd] Mdg " h . D je&gt tsas tight and no movements bet een the foam y ie$esent esserete walls was apparent, although any dif f eren-i y , g[ / Mal ~W weeld he dhtiicult to observe due to the de f a r:r.ib t 11 * ,. 2f l P, My' M g+g.s M ~*he 'w 88ma t.,  :

R=- ".

,. _. }:_J?* . Q *s * .-. '

E Mfg access sha r e .:so h ^

' m.

((dh((AQh Q je&atedhet1 with 98S1 peen figid the foma.FIVF wall and No ev14cace of tne da f fbutta eront : ese 41 mov w.

& gympg +ges'ehemaged and the:3oint was tight.

n PL E

? %gg ag;g@ . y - , w: r 0 'nsC ' .

i IIN h abuts the contal ment 4,* car.

3 g$$$h[hi8,Q@MM S111ef %Eelhettrees hy$ accesa f K M h within the FIVP. 'Zhis pint is narrt .e f in in. t 4

4 4 dhjASe Ee dence of downwar . mveau.r >*

F-Ei Iiff IW Weset(An h@khskM N;6)[GR4da UEE%8488.4Bootet. deft relative to the containment was ouerve-the'$siatihad parted pttehed trith or and esseurennt a the grout.vertice. .:+

l- -qfh%h j $ $"perting 12419e4e4 4 relativo noveosn- 2f 1/ % t. to i 1 beriaeetal~-relative movement was apparent .

=

&(dk  % n eseurred when the load froia the rivp vos v .:=a T51s sov em en t c w e.:

g_

{

C wu @m

'An M beter.se oce . haft.

gw y c y g,m( N -Q +

~ "s< w';

- - s.r r' .

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",V e p

r h

E- ,.

y I -- .

- . . p w - r ~n-

. W$..

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ng Am,wn 5%:&g< ggggg ^ % e";& I m,f%DQQ %l(3 g0  %

, 4 .

y.(

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$7 }M,@%g%;DhN & .

k $Nk@hN h G

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h ffh 1stestglept ;h

'Y leflyf te} gala visual insight J- ?g ~ ~ jbie; uses?ebreiens ters'wcking W [e giesee' jet the levels "f

N.

[ M r aersese pstably about 0.905 x- a/ M d

.W ..

i

. ~ dis.e. ction. , and were . ;

t i ~ . m ettthe,.53n's. On each floor t taboueCesj thsee;amata cracks.-

@E[Ik

%ifSYM i

h hhihNhkh,h m gen M

'?d$:qyjF gf& 5ugT ;hy[6$hni[ xw MkmwN.

~ 9. ;9*,. p g- +wwn:,ww w , w%ws.gvg a 4 c

E.cd_ a m@.w 1r up

~'t w? m)us 4,

p g

.,s t i ghesR < 4ad'Yipht: Ante the nsture of the g M j

^~

[essi pina"isl eet'most of the p' Serltwo^ y tK araeks were observed

tiesileg pt leget,[ pas ta'the' comp 11-4ptueenfatu '

(CTfa64 the a ulliary (1d b eneso&ation between the

. mul tiseetsI ketween these two ON%wQM5%:

VM yQ$  %

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2n s q ja %%ySQQ@$hf?4f^t qf - -

im di -h %

ma W k~A.

r Ma%1p%;

eM W . w=-s
- - ~ ~

1 M, .& 1

%gqdsf pre WF Aw N@: MWM?n' +  % ,=

A ggt '

@ 9

g
y .

c @hty]'afMM te ein 'lasight into h

.m E .

ma es /tes. G  ;

3 .+s - y::

e43,1l % ~, ,y.  ;;nv? AArQ% m i  ?

et taiisth e structure w*.th steel rods that

1. en J MMsgetlleveli.to eseysees? the structures.

c

  1. ' Men;es the-Aatake streetate, which is "l' w:ww

.A4 ms m wwp G&m&Qll i f W 9

' $b

' y M.. M. Weente&regonal ascks that start near

=-

3 efet af angle away from the intake m$ s .

' areet seems to be consistent vita m%gt 9081 massies se(tha' intabe' structure. The p eigDE se 4 40 in. wide. It was not

[MN -

M /S egleal eueeks penetrated the antire

?\hM $ N%

. 2 ,6hM1 cred was cheerved La an inter f or rey-g y W h 'eeged with a 1-in.- or 1.5-in.-dia.

Djhib%k

' %fy ,. W <.n.;g HV i M k:'

Geis% pese # e kseely threingh time wall.

n .y V

Y$. )  %? -

/

3 V<4 9ff  ;;? ~ fek.:'rteks 5fithe'M are now being- recorded on a irawing ty g$qdg[gA"& h M@'M1.I w$ MS Week Roaltoring prograts of the s'@S cons 1at s

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Response to Letter pated April 22, 1982 W

. J. W. Cook (Consumers) to H. R. Denton (NRC)

- on d

Geotechnical-Related Issues for Upderpinning the _

Service Water Puap Structure -

Needed Information i '

f  !

Geotechnical Engineers Inc.

Project 81907

[ _liay 12, 1932 L ,

p~

Items are listed ' by Confirmatory Issue No. in letter of April 22, 1902. ',

4 1 Basis for stresses i

By others 2 Justify 4000 kcf In our opinion, it is not appropriate to use a k-value of 4000 kaf to compute stresses due to Jacking load. Jacking should ,

cause curvature of the lower mat. The structural group should review'this item.

3 Acceptance criteria 5/lG-in extension in s gage length of 20 ft implies a very high stress in the steel and cracking during underpinning.

Control abould be on vertical differential settlement. The cri-terton The shouldshould criterton oe consistent be smallwith enough that used for corrective so that the Control Tower.

action can be taken in advance of severe stressing of the structure.

4 Tendon anchor By others 5 Dowels / rock bolts By others 6 S11 ding calculations andProvide interfacecalculations friction. and assumptions used for soil properties 7 Empty forebay By others

.

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