Text

Submits Addl Info in Response to NRC 790621 Ltr 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
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ML17173B061	List: ML19273C169;
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	NUDOCS 7908280392
	Download: ML19273C169 (22)
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{{#Wiki_filter:t a 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. Attachment 2: 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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( WTER OFFICE E!EMO;tANDU.'.1 h From b Da.Jr.mc.h ILreD;ccober_5,_1269 subject.Rrcaden _Dergen-Patornon,

                                                                          - UnitaB ll -JJEqn2njon of Col 0 min CKiteri;Litith CS,                                                                 _

i and Grinnoll on Move-her 10, _1969 To: __ It. J. Mazza 4 CCE G. F. Hovoke . G. C. Kuhlman R. K. LaCocco

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i$$n. 0&[&l@yj _Grinnell Co,mnany General Electric (Ralph Gilo) reviewed with Grinnell and Sargent t,Lundy (EDD) (Bill Taylor and Paul Treanor) the designbasin dooign basiscarthquake. used for rcotraints for the operacing and - i

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

chout 10,000 Por carbonpui. otecl thin gives a design stress of The operating banis carthquake (030) was concidered 907, of yield o tress, or as an occar.ional overload and designed to basis carthquako (D3E) about 24,000 pai. The dcaign rentraints would then cauno streauca in tho in excess of yield but well below ultima te. GS (Gilo) stated that alloviing DSU ctrecG to exceed

    ;                                 yield ar.d to rely on a nafety factor on ultinato would i                                   be difficult to defend. Grinnoll (Taylor) stated that                                                                                                             .

l to decign otheratice would result in even core mansivo , I restrainto than now exist. 0 p Sargent A Lundy (Eranch) pointed out that the 0:n: loada given A to Grinnell verc for a 1 ' /\ of tho piping nyctea was actually Laued on a .79 load 9 load. It una whercas the design ouggested that advantage be taken of thic. y ,[ jn f Grinnc11 (Taylor) ntated that if .7 /f

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

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                                              ,          INTER-OFFICE MEMORANDUM
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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, and on the rod drive scrca dischargo header and dinchai.go reservior.

Parann-Patorcen Dergen (Shypallo) questioned the uso of the factor ci 3 on the liluce curves. instructions from S&L. For They were confused by conflicting l Dresden (!bzza) they wero in the rigid range and for Quad Citicstold not to aultiply curvo rea (Kuhlaan) they vero t told to alvaya multiply curvo readings by 3

     '                          - (Gilc) stated that oration of about.        .33 9 the Blume curves contain an accol-Therefore t.o account far any building r,agnification it was originally :;uggested that the curvo readings raultiplied     by 3.         for deficction and restraint loads be But if the piping is rigid no nagnification occurn and the factor of 3 need not be rpplied. In rcccrd to Q cd cities it is certainly conservative to use the factor of 3 across the board. Ilovever, C3 in producing a new abic         cet of loca conservativo curves which chould to avail-coon.                                                                                      ,

Bergen (Shypailo) acked ho1 be corrected to account for the nacs ofEercea a valvo.the curvo re 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 C,a apan restraint load read frc:a tha curvn. C (Gilo) c.nd OLL (l; ranch) k agreed that thia waa necc..'.J.;10. '

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                                                          .            IN*TER OFFICE MEMORANDUM g.,, ,    E. B. Dranch in,, December 5, 1969 sut,p,Drcaden - Units 2 &

Ecrgen-Patercon, 3 - Discuncion of Scismic criteria with GE , 1 and Grinnell on November 10, 1969 y, , . Pago 3 l Cencral Observationn f- Decause of the general confusion on the part of the hanger supplicrs concerning the uno. of the D1uno curves and confusion concerning the design, criteria for the i p3C it is recommended that more detailed innt. ructions ' be written and ' presented for Quad Citica and future jobs 11icec11ancous l 1. t On the 10" IIPCI turbino steam cupply a charp edge I i stop dry well hanpenetration. been installed over the torus near the 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

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i 2. In $tany class I syntens the .tceporary jigo used to hold the pipe during erection have not Loc >3rcroved

     !                                         Most used na   of thejignoncs at observed were pieces of flat bar the floor penetration s1covos. Thenu l

tm could puncture the pipo under scismic deflectio be cautioned to remove cuch jigs when nc. i UCC chould erection is complotc.

t Mcchanical 7.nalytical Division

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Encutive orsgrs rnovsritucr.ri s. In Rcity Renu to. L Co . *!! . / j'RoVIDU4C1'. R. I. 02901

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SFWj United En3rs. & Constra. Inc. 4 ' Diondon iluc. Pur. Cta. ; Rural hout,e di Iorrin, Illinois 60450 'l# t to ia Attn: l'r. B. Derr.or I ii .a r n.

Dear 31r:

e t...), w i Nov. 19,~1969 This letter in to confirn our convercation en ! . ,, concerning the seicaic rentrainta required, . by Mr. R. Gilo of G.E. on the control rod hydraulic piph put up by Ecactor Controla and on the CCMM ditch.r ;a and 3 volume hondera per flow chcot M-34 on Unit #2 cnd flou - chcot U-365 on Unit #3

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                                                 .11 cant 11cvors on the tubing are to bo rentrained, c.c on cachoc UcIl            setthe   of entire centrol    icnc.tho red h;draulic    of cachsystem. of the four hent' ara Unit '2 and Unit      63      are        to   both     be      concidered Restrainto shculd be placed appro.iinatcl'f at every han:cr                    in     the     caue    fasnica.

cpan. Simple restrainta of an~,la iron and u-bolta c.; por 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. 9

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                 .        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'a ly. The above cor. ente epply to the CnD piping cutside the dr p ell. _, ,_.n..--- - ~ ~ - - --" l - a

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3I e r / li.F. Lattin i 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 in these should be dynamically analyzed to deterr.ine the naxitum stresses 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 t h above cocuents should be reviewed with Sargent & Lundy in that this is in their arca of responsibility.

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Structural Design Unit

                           !!/C 761 Ext. 2400                                                                              -

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                                                                                                                                                                     ;pi V December 2,1969 cc:       R.P. Barr                                      '

J.11. I.ove < I'3 T.J. panhes T File: 06.03 ItLC/LU ' N.F. Lattin - Requisition Engineering M/c 377

                   $ubject:

DY"NfTC DRrw:! 2 ?"AT.YRIG or IMT r:0 UTTpr'J 1.1::r.n on cp.n prpy"<;

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 and withdraw lincs of the C.'.D piping fron the reactor precture vemel pedest 11 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. The periods and spectral accelerations are given for five r.ades on each if ne The acceleratico responac spectrun uaed as input - Firure 2 - u u , of ., . neccesity, cstinated on the conservative side as tine and cocts did not pernit c.aking a response spectru:a at this location for the Oyster Crcck riant. The the 1" r axinun line, 14,100 stress Mi. for at thepoint 3/4" 12. line van 10,:'00 pai at point 12 .

                                                                                                                                                      . for 1" lina due to prccsure, trai;:ht and reicnic is 13,760 pai schich                                                                      c1h atly 13The cattmted tci '

over the alle'. cable of 1. 2 14,300 a 17, 150 pai. An stated choce, tb respouce rarv tive sida.spectre ,. use,i C3 in?ut Ura, of nec Arity, catf r ted c 1 t'- c c.- for the first cada of 2.03 c ratity. Iret p: tha 1"t 11ae, f na ' t* this rem:lt cc, . d in a3 m . etrni 1

                      ' a   of 2 .I to 0.11 t!.a     1:c  mthed      cr.            fer       t'a 17'1 c: O                                '

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

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

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             -'              nortIc reann t?>n~ err DerAnm.:it                                                                                                                          I San Jose, Califontia                                                                                                                                    .~.

Decesbor 12, 1969 .,N cc: R.P. Earr [ J.E.' Love ~' T.J. Fenca J. f.ecso Tilo: 06.S3

          )                                                                                                                        R2C/L3 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. x 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 line of the C"1D piping ca Laing about 12 (ect.

ration of this lica is ciuller to the Oyuter creck Since CED incert the size n.-d confir.u-cud withdtc.i i lina, for s.Lich a dyr.c-ic cualysia vna r_cde. it secc4 appropriate to rdo au cvaluaticn nults c5tained atofOyster tha otresrcoCreek. in the Dresden CFD lines tarod t.rco the re-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 pack cceelcration floor toresponso be 1.63 . spectrun for Dresdca indicates the Creek van 2.0;t. The peak ccceleratien used for C ~.; , tor Therefera, the Oyster Creci stresses cca La rc-

      . j duced by the facter of 1.6 over 2.0.

Sinca was 14,100the rpai,iu nit ecir-ic 13 Mnieuw ctrew for Cjeter Creek in tho 1-11th lire . 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. 8? f.. } > l cJ. 1 i e M Wh am. Omdum e w @wN .neske.e d sp- i s ee .e.W s ' #*% M ** emeuuW --* ^

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gi k m U.P. Lattin - 2., cacc.-ber 12, 1959 ._) 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. F.L Cile Etructural D sirn t%it ] H/C 761 T. :. 2400

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9' PIPE 8 LARGER . 1 SYSTEM 1400 ' .NO. OF RESTl! AIMTS f500 ja - . Ag IGoo . . 2300 s gG .. . . - 7500 'gq i300 3 t16 i .. _2/2 TO (O PIPE . SYSTEM 0300 _No. OF RESTRANTS ' g4 1400 22 ' IGoo asco 24 ' SG i -
, 3900 .. i. - 69 E36- f>
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Jy Ak:A CG;l 309. If 6sPr.cht a34 2112 l gC p d pef [c; i . p7 i Dl; L'illett
,I RS 2cr.o March 11, 1970 i
i l A. b. Low:on Cencral Electric Co. Cordcva, Illinois
Subject:
A::ach: VISIT TC L2IS02N - RE TO S2:SulC 32STh&NTS Lc::cr .:. Sasso :o Xcz::c 12/3/6t> Mr.
his N. 'ob.Anderson, C. Mi*lcr and D. Nelsen v: re con:
I tiens used cre givcn in the cc:cchcd . Thcr.o latterThe .. cnd the work instruc.vcs perfora d by P were no added afofter know.'cdge thca.decc:or Con:ro." s .cd lef; the ci:c addud rcstrain:s snd thcy ecy h vc The six pcrcgraphs of :he at:cchscn: a various creas cnd all vere chechd out .nd . ept Gl. rea1lcfled cxcdoccri' u cdd and in fcc: ovczent c ' vitra:ica vce Kr. !.clson vill look in:o this.
. u casily e be.nb; prodeccd icoul n end units.
All theshapes. unistru: added restraints varc fctrict.:cd frc: cn i vcided to the U frcac carr/' ins ecch bundic of 177 pipe 1:ca 2 . This pipc extended carrying the on one side cicyc:cd of the U frc:a to the rt.ther vc."k grc:in3 cngic hervy ircn fr.rc ing of a U shaped cn ;1c cnd L-bolt cc::cch re.in; ccn.: d ct-
orestraints be p 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 cnc ar.310 iron necrand Uthe tol: top of cach 10 1:; ci t required Ob : to an I tccr. c.: s di:cM e c volu.:-c cle:pa which vcre cc1:c cc cna ursTryin3 1: c ar eni: . 1: ... o cc:pictely envclopi.d the pf tcrcund the individual t', m cla mps pipesi :.1:htc rep 1 c a with unis
.c 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; ..
pL f' L h TDmm _ h $Nn a
p. ei % -
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S4me . ^ _(
I I - I6 O o Mr. days.Miller esticated that the above work package was co pl t d ee in 4 One or tw other ten there felt that this estimate was overly eptimist.' t No effort was cade to involve P.01C in thiss work since it wa recso:ed that extra peopic. costs and lost tir.e would resultz fro:n ng theirremobili i l li i
/ V C. M. Erb 1
Project Engineer CME /dh en 1. I i 4 l t m _.e.~---------***"-'*^*,,,.__,_._.o-**---~'---" ~ 1 -
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" arch 27,1979 b
TO: !.. I . lattin
21M:.CT:
QISr'IC ffNITAJ'Tll JUT _~.P. C"', ,9"j,I " Mr. !111ctt of i'C1 rn. has a colere.'-ir 1"'I:in!!catini; the Clnrs ! 115.cs . The revised ;Im c curves are also 1:. !.is rossession , 1.ut 'sc ims poi::tel out ts.o areas vi et.
. t! - ' Ir e curves a;.1 car to !c tr.-
ccc.plete for 7eactor tbn:rcir. .~esi:. n: (1) -
' o et:ives for ?/4 r.td l' Jiaceter ni' es, scho'ule no.
(2) ,o catve for a 2 carten steel pire, rcl c<*ule Ira. C. it. 1 rb Project Digir:cer IP).cDU: T. r; FAD C.ITlir TFJiCTS jjh cc: R. {. icwton
.t. a. Icffer j u 2 I:. P. Icissier )
1 % ~ ~~ ~~ ~ .. D V P. e-.C 1 \.t t- {-} 4 ,
- d v..i. .'u n ,.0.
i v- '
.- iud i L- .~.. ~ . . _ . . b ,G q MmY " _ . . . _
g # ** fe hv *$ ( '* h h ,,- o
$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
Dear Mr. Koester:
Enclosed is one microprint of each of the following drawings as requested, which shov the Dresden - Unit 2 cable pan installation. Drawing No. Rev. 12E-2018 E l?E-2019 W 12E-2020 E 122-2021 D 12E-2022 C 12E-2023 B 12E-2024 G 12E-2025 D 12E-2026 B 12E-2027 B 12E-2028 B 12E-2029 K 12E-2030 F 12E-2030A B 12E-2032 F 12E-2033 F 12E-2034 K 12E-2036 J 12E-2038 D 12E-2039 E 12E-2040 D
SARGENT& LUNDY E N GIN E C H S CHIC AGO Mr. W. II . Koester July 30, 1979
Confonwealth Edison Company Page 2 Drawing No. Rev.
12E-2041 D 12E-2042 J 12E-2043 D 12E-2046 D 12E-2047 11 If you have any questions, please contact me. Yours very truly,
d. 4. 4/
A. G. Lord Mechanical Engineer AGL:kl In duplicate Enclosure Copics: D. Palagi (1/0) T. J. Victorine/F. P. Tsai (1/0) F. W. Fischer (1/0)}}

ML19273C169

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ML19273C169

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Dear Mr. Eiconhut:

Dear 31r:

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Dear Mr. Koester:

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