Text

Submits Addl Info in Response to NRC Re Seismic Design of Control Rod Drive Hydraulic Tube.Drawings of Cable Trays & Supports Encl
	ML19273C169
Person / Time
Site:	Dresden
Issue date:	08/15/1979
From:	Janecek R; COMMONWEALTH EDISON CO.
To:	Eisenhut D; Office of Nuclear Reactor Regulation
Shared Package
ML17173B061	List: ML19273C169;
References
	NUDOCS 7908280392
	Download: ML19273C169 (22)
	v • d • e

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speg Commonwealth Edison

{ dl,i/ One First National P'aia. Chicago,1 hnois Address Reply to: Post Office Box 767 Chicago, fifinois 60690 August 15, 1979 Mr. Darrell G. Eisenhut, Acting Director Division of Operating Reactors U.S. Nuclear Regulatory Co: mission Washington, D.C.

20555

Subject:

Dresden Station Unit 2 Systematic Evaluation Program Topic III, Scismic Review NRC Docket No. 50-237 Reference (a):

D. G. Eisenhut letter to C. Roed dated June 21, 1979

Dear Mr. Eiconhut:

The following information is provided in response to the request for additional information made in Reference (a).

Attac!.mont 1 Additional information on the soismic design of the CRD hydraulic tubing. :

Drawing list and additional drawings of the cable trays and supports for Dresden Unit 2.

We are attempting to obtain additional information on the stress induced frcm the eccentric mass of motor operator valves on 1" to 4" ditmeter piping.

This will be forwarded to you when it becomes available.

Please address any questions you may have concerning this matter to this office.

Eight copies of this transmittal and attachments are provided for your use.

Very truly yours, W

Robert F. Janecek Nuclear Licensing Administrator Boiler Water Reactors 7 9 08 2 8 0gef y,

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From b Da.Jr.mc.h ILreD;ccober_5,_1269 subject.Rrcaden - UnitaB ll -JJEqn2njon of Col 0 min CKiteri;Litith CS,

_Dergen-Patornon, and Grinnoll on Move-her 10,

_1969 i

To:

It. J. Mazza CCE 4

G. F. Hovoke G. C. Kuhlman R. K. LaCocco

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_Grinnell Co,mnany General Electric (Ralph Gilo) reviewed with Grinnell and Sargent t,Lundy (EDD)

(Bill Taylor and Paul Treanor) design basis used for rcotraints for the operacing andthe dooign basin carthquake.

i Grinnell (Taylor) otated that they had designed for a safety factor of 2.5 on ultimato forVnormalQho' operating load.

Por carbon otecl thin gives a design stress of chout 10,000 pui.

The operating banis carthquake was concidered as an occar.ional overload and designed to (030) 907, of yield o tress, or about 24,000 pai.

The dcaign basis carthquako (D3E) would then cauno streauca in tho rentraints in excess of yield but well below ultim t a e.

GS (Gilo) stated that alloviing DSU ctrecG yield ar.d to rely on a nafety factor on ultinato would to exceed be difficult to defend.

i Grinnoll (Taylor) stated that to decign otheratice would result in even core mansivo l

restrainto than now exist.

,p I

0 Sargent A Lundy (Eranch) pointed out that the 0:n:

A to Grinnell verc for a 1 loada given piping nyctea was actually Laued on a.79 load whercas the design of tho

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9 load.

It una ouggested that advantage be taken of thic.

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ctrecsca proba'aly would not c::cced yield.J ucro uccd the PM

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/i Czinnell vill check scr.o of the worst caccr. and let ua ! %.

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64 1 GENT C4 I U N D Y(

INTER-OFFICE MEMORANDUM

' - ~

Trom C. D.

Dranch

& December 5, __1969 SubJcci.DICDden _ Unitn 2 a 3 - D!rnunnien rif % !rcic_ Criteria uith r3,

_Rergen-Pahann,..rmlainns11 on november 10_._19s9 To:

pago 2 that additional restraint was needed.

This van on tho small piping racko above the rod drive nodules, the rod drive scrca dischargo header and dinchai.go and on reservior.

Parann-Patorcen Dergen (Shypallo) questioned the uso of the factor ci 3 on the liluce curves.

They were confused by conflicting instructions from S&L.

For Dresden (!bzza) they wero l

in the rigid range and for Quad Citicstold not to aultiply curvo rea (Kuhlaan) they vero told to alvaya multiply curvo readings by 3 t

- (Gilc) stated that the Blume curves contain an accol-oration of about..33 Therefore t.o account far any 9

building r,agnification it was originally :;uggested that the curvo readings for deficction and restraint loads be raultiplied by 3.

But if the piping is rigid no nagnification occurn and the factor of 3 need not be rpplied.

to Q cd cities it is certainly conservative to use the In rcccrd factor of 3 across the board.

Ilovever, C3 in producing a new cet of loca conservativo curves which chould to avail-abic coon.

Bergen (Shypailo) acked ho1 be corrected to account for the nacs of a valvo.the curvo re Eercea suggcated i f a valve '.:cre present in a cpan t.',:ct tha valvo weight be nultiplied by.3 t.r.d the recult acS S to k

C,a apan restraint load read frc:a tha curvn.

C (Gilo) c.nd OLL (l; ranch) agreed that thia waa necc..'.J.;10.

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IN*TER OFFICE MEMORANDUM g.,,,

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B. Dranch in,, December 5, 1969 sut,p,Drcaden - Units 2 &

3 - Discuncion of Scismic criteria with GE Ecrgen-Patercon, and Grinnell on November 10, 1969 1

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Pago 3 Cencral Observationn l

Decause of the general confusion on the part of the hanger supplicrs concerning the uno. of the D1uno curves f-and confusion concerning the design, criteria for the p3C it is recommended that more detailed innt. ructions i

be written and ' presented for Quad Citica and future jobs 11icec11ancous l

1.

On the 10" IIPCI turbino steam cupply a charp edge t

stop han been installed over the torus near the I

dry well penetration.

i the pip'e under ceicmic deficctions.Such a device could puncture Grinnell (Treanor) to the pipe to distribute the lorel. stated that a pad would be added

/

In $tany class I syntens the.tceporary jigo used to i

2.

hold the pipe during erection have not Loc >3rcroved Most of the oncs observed were pieces of flat bar used na jign at l

the floor penetration s1covos.

tm could puncture the pipo under scismic deflectio Thenu UCC chould be cautioned to remove cuch jigs when nc.

erection is complotc.

i t

Mcchanical 7.nalytical Division E. D.

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?,'/{. >.f.i SFWj United En3rs. & Constra. Inc.

4 Diondon iluc. Pur. Cta.

Rural hout,e di Iorrin, Illinois 60450

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tto ia Attn:

l'r. B. Derr.or I

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Dear 31r:

e t...), w i This letter in to confirn our convercation en Nov. 19,~1969 concerning the seicaic rentrainta required,.

by Mr. R. Gilo of G.E. on the control rod hydraulic piph3 put up by Ecactor Controla and on the CCMM ditch.r ;a and volume hondera per flow chcot M-34 on Unit #2 cnd flou chcot U-365 on Unit #3

^

.11 cant 11cvors on the tubing are to bo rentrained, c.c UcIl oc the entire icnc.tho of cach of the four hent' ara on cach set of centrol red h;draulic system.

Unit '2 and Unit 63 are to both be concidered in the caue fasnica.

Restrainto shculd be placed appro.iinatcl'f at every han:cr Simple restrainta of an~,la iron and u-bolta c.; por cpan.

our discussion, are all that are required.

If cny further inforna. tion is nececcar/', I uill to c.t tho jobcite the ucek of Lccenber 8,1959 Very truly youra, GRIL:i'W., CO., I: C.

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.v AT0;!!C POWI:R D) DIP!1LNT DEPARTMENT San Jose, California k

Neverber 26, 1969 cc:

R.P. Ha n k'. ! - tiock J.C. I.uve 1.J. P.iaho.

File:

PIC/LB N.F. Lat:ia Requiniston Engineering M/C 377

Subject:

SETSMIC RESTRAINTS FOR CRD PIPING - DRESTWN 2 On November 18, 1969, an inspection of sore of the Class I piping systens for the Dresden 2 plant was tude in regard to the installation of seisrde restraints.

L'e have the follo.cing cements regarding tha CAD piping that is Class I:

1.

One additional support should be installed en the piping at each end and above the Hydraulic Control Units similar t.o the supports at interr;cdlate points.

2.

At points where the horizontal piping cibows into the vertical piping goint, to the control r:odule and cantilevers, tore than 2 feet from the last support should be cla ped to the nearesc rigid horincatal pipe running between supports.

3.

The 4-inch scram discharge headers should have horizontal supports that are spaced not vore than 18 feet opart.

4.

'Ihe 2-inch ceran discharge pipe going to the 10-inch neram discharto volute asser..bly chould h tvc horizontal cupports that are cpaced not core Lhan clcVen icet apart.

5.

The 10-1nch ecran dit.charro volt.a chould be horizontally restrair.ed near the top of the csuen' ly.

a The above cor. ente epply to the CnD piping cutside the dr p ell.

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li.F. Lattin Nover:ber 26, 1969 The insert and withdrau lines from the penetration of the dryvell to the reactor pressure vessel pedestal are...legaately cupported except cere of the clanps attaching the pipes to the support fraces give vertical support only - these should be replaced with clc-ps that extend corpletely around the pipe, providing thernal conditions vill pernit. Alno, the nupport franes beyond ti.e dryvell penetration should bc horizontally restrainad.

The nost critical insert and withdraw lines from the pedestal to the control Rod Drives should be dynamically analyzed to deterr.ine the naxitum stresses in these lines.

In these runs, there are no horizontal restraints and the spans are ruch greater than 9 feet.

The above cc:~ents should not be taken as indicating that all of the Cin;;s I piping systc 2 are adequately supported to resist selt.nic lotces, as only a fe *wurs were devoted to this inspection and review.

i I

h above cocuents should be reviewed with Sargent & Lundy in that this t

is in their arca of responsibility.

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.E. Cile Structural Design Unit

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s A10:!IC ltLtil EqtfIPMChT DEPARTM121T by*/*(,d' f... ]

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" ;pi V December 2,1969 cc:

R.P. Barr J.11. I.ove

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File: 06.03 ItLC/LU N.F. Lattin Requisition Engineering M/c 377

$ubject:

DY"NfTC ?"AT.YRIG or IMT r:0 UTTpr'J 1.1::r.n on cp.n prpy"<;

DRrw:! 2

Reference:

Letter to N.T. Lattin fron R.E. Gile dated 11-26-69, Eubject:

Scienic Ecstraints for CRD Piping.

To fur ther establish the need for dyna =ically inalyzing typical incert withdraw lincs of the C.'.D piping fron the reactor precture vemel pedest 11 and to the Control Rod Drives, t c are attachin~, a pact perforted en sin 11ar piping for the Oyster Creek t c->ct.of the.'ynenic analyala You uill note that 2 typical lines were anglyred - 3/4-inch cod 1-inch diareter.

These lines had a cpan of about:J13 feet uithout supports.

periods and spectral accelerations are given for five r.ades on each if ne The The acceleratico responac spectrun uaed as input - Firure 2 - u u neccesity, cstinated on the conservative side as tine and cocts did not

, of pernit c.aking a response spectru:a at this location for the Oyster Crcck riant.

The r axinun stress for the 3/4" line van 10,:'00 pai at point 12 the 1" line, 14,100 Mi. at point 12.

. for 1" lina due to prccsure, trai;:ht and reicnic is 13,760 pai schich 13The cattmted tci over the alle'. cable of 1. 2 14,300 a 17, 150 pai. An stated choce, tb c1h atly respouce spectre,. use,i C3 in?ut Ura, of nec Arity, catf r ted c 1 t'-

c c.-

rarv tive sida.

for the first cada of 2.03 c ratity. ret tha 1" 11ae, this rem:lt d in a m etrni cc,.

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fer t'a 17'1 t

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N.F. Lattin Decer.ber 2,1969 This information should be pasocd on to Sargent & Lundy

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Alb R.E. Gile Structural Design Unit M/C 761 Ext. 2400 CB N

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cc:

J.E.' Love ~'

T.J. Fenca J.

f.ecso Tilo: 06.S3 R2C/L3

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h.F. Letcia Prquinition angineering H/C 377

Subject:

AWALYSIS 07 CFD TM';!"tT AND ITIT*tDPAV LIXt0-

_UKr'20: 2

Reference:

Letter to h.P. Lattin freu R.5. Cile dated 12-2-09, cr.:o subject.

On Decet:her 5.19t9 a telephece call frcr.a Estrent t. Lundy (R.J. Ma::s and E.B. Ercach) cave tha r.axi: an developed length of an incert end withdr:na x

')

line of the C"1D piping ca Laing about 12 (ect.

Since the size n.-d confir.u-ration of this lica is ciuller to the Oyuter creck CED incert cud withdtc.i lina, for s.Lich a dyr.c-ic cualysia vna r_cde. it secc4 appropriate to rdo i

au cvaluaticn of tha otresrco in the Dresden CFD lines tarod t.rco the re-nults c5tained at Oyster Creek.

ing uanner.

Wis evaluation cr.n Le rude in the follc,-

1.

Since the upan for Dresden (12'-0") 14 lean than at cycter Crce's (23'-O"), reduce thcae stresses by the ratio of the equare of the etcts.

2.

no appropricto floor responso spectrun for Dresdca indicates the pack cceelcration to be 1.6.

The peak ccceleratien used for C ~.; tor 3

Creek van 2.0;t.

Therefera, the Oyster Creci stresses cca La rc-duced by the facter of 1.6 over 2.0.

. j Sinca the r iu n ecir-ic ctrew for Cjeter Creek in tho 1-11th lire was 14,100 pai, it 13 Mnieuw that by reducins. this ty the retto cf the equcro of the rpans - 14*. cict 529 - cr.a a f urtter rt. :.ctica cf 1.6 over 2. - the rccultin*, ctress of about 3%0 pci b vell within tho allowcLIo for Ercadca.

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f.11 of tbo ebevo inforestfrm has 1<cu given to ferpnt & Lendy, r_94 they cro to verk cut LLo final dotatje cnd ctrescen for Dre::'en CD inrset and withdrev lizca.

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.r Mail Code 367 JRS/Ltr. 345-59 Decerr.ber 12,1959 i

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Mr. G. F. Hoveke Sargent and Lundy, Inc.

140 South Dearborn Street Chicago, Illinois 60503

Subject:

Dresden Units 2/3 Control Rod System flexability Analysis

Dear George:

At the verbal request of R. J. !!azza, Sargent & Lundy, APED Engineering has evaluated the revised CRD return line flex-ability analysis as it affects the 3" vessel nozzle for Unit 2.

The loads as indicated have been found to be acccptable, hc. aver, it is our understanding there Icads do not consider any seismic loads but rather only consider dead v:eight and therral ic:ds.

Scisr.ic values should be calculated to assure th:t values do not exceed those as follows:

H= 920 lb.

!!= 765 f t-16.

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= Section redulus of no;3;zle safe end cross scetien ebcut a dic.metral axis, in -

A

= Area of the cross section of the noz:lc safe end, in 2 us et your convcnicnce.ycstions rcgarding the abovle,n9 '. = "ca u d O If there are any c m,i t r o R

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SYSTEM 1400 '

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Dl; L'illett i

,I March 11, 1970 RS 2cr.o i

i l'

A. b. Low:on Cencral Electric Co.

Cordcva, Illinois

Subject:

VISIT TC L2IS02N - RE TO S2:SulC 32STh&NTS A::ach:

Lc::cr.:. Sasso :o Xcz::c 12/3/6t>

Mr. N. Anderson, C. Mi*lcr and D. Nelsen v: re con:

his 'ob.

tiens used cre givcn in the cc:cchcd latterThe work vcs perfora d by P I

cnd the instruc.

were added af ter decc:or Con:ro." s.cd lef; the ci:c addud rcstrain:s Thcr.o no know.'cdge of thca.

snd thcy ecy h vc The six pcrcgraphs of :he at:cchscn:

various creas cnd all vere chechd out.nd rea fled cxcdoccri' u cdd a

and in fcc: ovczent c ' vitra:ica vce casily prodeccd icoul ept Gl. 1lc

. u e be.nb; Kr. !.clson vill look in:o this.

n end units.

All the added restraints varc fctrict.:cd frc: cn i unistru: shapes.

vcided to the U frcac carr/' ins ecch bundic of 177 pipe 1:ca 2 extended on one side of the U frc:a to the rt.ther hervy

. This pipc carrying the cicyc:cd vc."k grc:in3 cngic ircn fr.rc ing of a U shaped cn ;1c cnd L-bolt c::cch d :orestraints be p c re.in; ccn.: ct-tM cicva cd grcting walk strue:ure.

cnother cnLic teciccc to knce braces with a U hol; be c:c cc.ed to che ccncrc:Icca el, required that 2 cdd

rca discharr,c pipe. Iten 5 required tha:

a v ll for th 2' vi:h other and being veldedassembly bc c::cched necr the top of cach 10 1:; ci cnc ar.310 iron and U tol:

to an I tccr. c.:

s di:cM e c volu.:-c required Ob : cle:pa which vcre cc1:c cc cna ursTryin3 1: c ar eni:. 1:... o cc:pictely envclopi.d the pf tcrcund the individual pipes tc rep 1 c a with unis

.c t', m cla mps i :.1:h Two unis: rut vertical piccc and r stric. ed ca:1ec. in al~ dire:: a;..

frc:a to provide bc:h hori:ca:Li and ve n t. vere v.h to :L uc::r cf tha sniatra:

. 1 r a.

in;..

f' h TD h pL L

_ mm $Nn a

p. ei %

,,ap>,4-e -

S4me. ^

_(

I I

I6 O

o Mr. Miller esticated that the above work package was co pl t d days.

One or tw other ten there felt that ee in 4 overly eptimist.'

this estimate was No effort was cade to involve P.01C in this work since it wa t

that extra costs and lost tir.e would result fro:n remobili i s recso:ed peopic.

z ng their l

l i

i

/

V C. M. Erb Project Engineer 1

CME /dh en 1.

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" arch 27,1979 b

TO:

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21M:.CT:

QISr'IC ffNITAJ'Tll JUT _~.P. C"',,9"j,I "

Mr. !111ctt of i'C1 rn. has a colere.'-ir 1"'I:in!!catini; the Clnrs !

115.cs.

The revised ;Im c curves are also 1:. !.is rossession

, 1.ut 'sc ims poi::tel out ts.o areas vi et.. t! - ' Ir e curves a;.1 car to !c tr.-

ccc.plete for 7eactor tbn:rcir..~esi:. n:

(1)

' o et:ives for ?/4 r.td l' Jiaceter ni' es, scho'ule no.

(2)

,o catve for a 2 carten steel pire, rcl c<*ule Ira.

C. it. 1 rb Project Digir:cer IP).cDU: T. r; FAD C.ITlir TFJiCTS jjh R. {. icwton cc:

.t. a. Icffer j

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$3 A n u n ser F: Luxnv ENGINEU3th F OU N D LD tsY F 5'E Of 88iC R S AN GE NT-19 98 SS EAST MONROC STREET CHICAGO,lLLINOIS 60C O3 Tr it PHON L

- 312 269-2000 C ABLE ADDRE SM - S ARLUN-CHICAGO July 30, 1979 Project No. 5667-00 Commonwealth Edison Company Dresden Station - Unit 2 Systematic Evaluation Program Mr. W. H.

Koester, Project Engineer Station Nuclear Engineering Dept.

Commonwealth Edison company P. O. Box 767 - 35 FN West Chicago, IL 60690