ML19206A912
| ML19206A912 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/19/1968 |
| From: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Logan J JERSEY CENTRAL POWER & LIGHT CO. |
| References | |
| NUDOCS 7904210607 | |
| Download: ML19206A912 (16) | |
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INDEX ITEM NO. 6
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UNITED STATES
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Q, N,,< TO ATCMIC'E!ERGY CCh*MICGICN Y
1 ws.samorow. o.c. asas f
Docket No. 50-320 SEP 19 IES Jersey Central Pcuer & Light Compcny Madicon Avenue at Punch Devi Road Morrisrown, New Jersey 07960 Attentica:
Mr. John E. Logan Vice Presidant Centlemen:
This refere to your application for a construction permit and facility license for the Oyster Cuek Unit 2 Nucicer Power Station. Our prel1=inary review has indicated that additional information with respect to the quality control and assurance, containment design, and other structural design matters will "be necessary to enable us to continue our review.
It is likely that many questions similar to those contained in the enclosed listing hava either been addressed in other formal submittals or vare previoucly resolved in connectica with other construction permit applications filed with the Cc-mission.
This may be true especially with respect to the containment building design.
In such cases, we encourage you to respond to these questions by reference to the pertinent documented infor-mation, including any additional information needed for clari-ficatica or emplificatien of these matters. Your response on these matters will be necessary to complete the record needed to support your application for a construction permit and facility license.
Sincerely yours, r
F ter A. Morris, Director Division of Reactor Licenaing
Enclosure:
List of Questions cc: Ja=es V. Neely gr George F. Trowbridge, Esq. e
-- a 7904210(o 1 0
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.s JERSEY C'"lTCAL ?CL*ER ti LICET C:'WEf OYSTER CREEK HUCLEAR STATICN - UNIT 2 DOCKET UO. 50-320 s
a 1.0 _Genermi structural Dec.ign 1.1' Provide a liat of Cicou I itama or structurco co=bined with, housed in, adjacent to, or supported by Cleas II structurca.
1.2 Deceribe the protection to be provided cny Class I equipsent not in, or supported by, C1=eo I structursa.
1.3 Stars how the earthquake loads vill be established for equip =ent in 1.2 above.
1.4 Describe the design cethoda used for the cochined atructures in 1.1 chove.
1.5 Justify a cerbined rotational and trsnelational tornado vind velocity of 30D uph.
1.6 Describe the spectrum of external missiles which the facility will be protected against above 25' fron ground and how this protection vill be provided.
J.7 Describa the design criteria and bnces for the supports for the osjor j.
componento in the resctor coolant tnd cmargency cooling cystem, including -
in particular the recctor veseel, oceam generators, pressuriser, main coolant pu=ps, and safety injection tanks.
1.8 Describe the protection against, and effects of, a tornado on the fuel pool.
2.0 Contain=ent Structural Design 2.1 For the contain=ent structure, provide:
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(c) Scaled load plots for moment, shear, deflection, longitudinal force, and hoop tenaien, in order that an appraisal can be =sde of the sig-nificance c the various loadings uhich influence the containment design. Provide riane plces for sevarni centnincent heighta for the folloving loadingc: practre.co, dead, preocure, design carthcueke, wind, linar tharcal (nor=al cnd accident) and concrete thermal (normal and accident).
(b) The nor=al operating and transient accident thereal gradients to be
' used in the design of the centain=cnt for the typical vinter and su=mer days.
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. (c) A descriptico of terzicnal lo ds cad how thsy vill be handled.
(d) Th: values of Z med u ic: crack:d and utcracked rainforced concrete e
e structura for d.*.ffersx: eitvetiens sad exolsin their use in the de-sign of the ceac :te shell end in thems1 lins losding cer:nutaticas.
Include the affect of shri-kcas cud creep. Ste ta whether the cceout:tr preszt.n to ha u;ad cr.xt into acconte thess vzristicas of E and u,
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c=d alao r.xiay ettric lenda.
(e) Tho ranlytical procedures *.:cd fcr zeriving at the forcae, shscrs,
and rm.rnen in tha scructural shall, cen:icering that the stracture is not axisy:neeric (buttresses).
(f) The ceneideraticca given to, :nd the analytical procedures used for datamining discontinuitv s trr:ac.s at the bere, d.v 2 (ring gird:r),
tnd buttrasses. St:te the assu=cticns, with regard to structural stiffness, that fom the basis for these stress deceminations and indicate the extent to which variaticns of E and u are considered.
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(g) Because of cracking of concrete due to shrinkc2e, to testing, to thamal stresses, cnd during an accident, the preb1cm of adequate bar enchere;e is of special concern. Provide infornation on hev the teinforcing be.r: are enenored at certain criti:21 points cuch as:
center of the dec.a, internsdiate terminal points of radial bars in -
the dem, bcra provided to take discentinuity stresses, some dianenal bars, bara connecting the buttresses to main shell, bars under pre-etrossing Eschora, etc.
(h)
Discut the influenes of crceking en bend and anchors:;e of bars ter-minting in cr: eked seca. The incrcase of cr ek uidth during tha life of the plent due to the=ci cycling, to pregressive shrinkin2 and creep of cencrets, to weathering (free::ing uld thc::ing), to acistic losding occurring during the life of tha pl:nc, and to s trcas reWrJul, should ha c caidered.
2.2 Indicata whether the folleuing h:va been or will be considered:
(a) Pcesible ravarsal of str: aces dut to cr:ap durint; cold shutdeun.
(b)
The crtcking of the cylindric:1 vall, compared with the behavior of the uncrackad mac.63-079
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2.3 For the basa slab, describst
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(a) The tuelytter.1 pre.cadur.se used to arriva et the forece, merento, und shcer=, coscietring ths em- :yrmtric 154 dice and dsfertutiens of tha n,tt.
Stc a whethat trsasient thsensi gredients havs been censid-ersd.
(b) The elcatic propertius of ths cands which hevs been used for the design t
2.4 Ulth reepsce to 6eir=ie d::igs of thz ccetsinnaat, describe:
(c) The gancral analyticel model for tha containment including mass dis-tributica, =tiffnese cceificiente, modes of vibratien, cao (nclycient prcesduras fcr arriving at a loading distribution en the contalement structura.
(b) The manner in which damping will be considered in the structural de-sign. Justify the damping values employed for the various components of the structuro censidering pessible cracking and dif f:r:nt e: des.
(c) The extent cad ocnner in which tha hori=cntal, vertical cnd rocking motions vill b2 c;ccidsrmd in tha desi;.n, and hei the corr spending damping vill b3 incitiad. Describe the eetica of the structure with respect to grcund using the above three compenents of actien.
2.5 Vith respect.to liner design, describe:
(m) Types cad coebinations of loading censidered with regard to liner buckling, cad the ar.faty factort p rovided.
Includa tha influs.nca of large tangential streins due to possible opening and clesing of cracks in the concrete under the load ec=hination that includes accident cud earthquake Iceda.
(b) The effect on the linar plate of nudden cooling by the centainment spreys.
(c) Tolcrcnce: ca liner pl:ta thickness and liner yielo strength vari-ation sad ths base: for thm selected valuss.
(d) The possibility of clnstic end inolcstic buckling especially at bcsc of ths vall. Provida semple eniculaticas cheuin3 the influence of all perticent psrcascars, such es:
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Variation of plate thickness; Veriatien of yicid peint of 11:er stec1; Influzaca of Poiason's ratio for eteel; Erection inaccurecies (local bulges, offsets at saata, vreng enchor locctien);
Ptea tressing; l
Creep of concrete; Variation of Yocag's medulus cad Poi:een's ratio for cracked end uncracxed concretc. cad co a function of stress level in ccacreta (clastic
&nd plactic); rad Ground vatar infiltration, earchqucke, temperature loading.
r (e) The stessa cnd strein limits used for the liner, the bases for theca licits, cad tha extent to which thcom limite relate to liner leakage.
(f) If the effect of temperature rise in the liner vill be represented by a uniform pressure increase, justify this approach.
(g) Describe the design approach that vill be used where loadings must be transferred through the liner such as at crcne brackets or machinery equipcant counts.
(h)
It i= noted that the bottom liner is not accessible for inspectica during the life of the plant.
It is therefore very important to avoid any unnecessary strasses and strains in the botten liner. The arrcngement for load transfer thrcugh liner under the bottem of the i
interior stru:ture should provide for transfer of shears parallel to the liner. Indicate how the shcars, ecpecially those due to thermal expansion and carthquake, will be accommodated.
(i)
Describe the liner arr:ngenent to be used at tha base-cylinder to liner juncture, the strain limits imposed at the juncture, and provide an analysis of the capability of the chosen liner arrangement to ab-sorb these strains under deaign basis accident c=d carthquake conditient Discuss the influence of local cracking on liner anchors.
2.6 For the d,aign of the liner anchorages, describe (a)
The analyr.ical precadures and techniques to be used, including sample calculatfans.
(b)
The failuce mode and failure propagation characteristics of anchorsqcs.
Discuss the exte.nt to which these characteristics influence Icaktient-ness integrity.
Indiceta uhat desiga provisions vill be incorporated to prevent anchorage f ailures from jeopardizing lecktight integrity.63-081 m
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' (c) Hcu citatic ad inalzatic beckling cf the liuar vill be considered in tha droi;:e i,I us snehers. Discus: tan possibility of unbc1cnced loada :.: ting es cna or savarsi nchora cnd pr: vide c ocudy :houing that ce chsJin nnetica een occur e.ad ta e ensriva buck 1tng of the linor, cad c:an failure of rachere in exclud:d.
2.7 With regrrd to penstratien design, dascribe:
(c) The deeign criterie that vill be applied to ensure that, under nost-ulated design bcsis sccidsnt conditicas cotential ::cultant torai. mal, sxist, bandie.x, er shsze pipin;; it.eds vill rot czuse a breach of the cont ainr.an t.
Include the design criteria intended to prohibit 1 Lpe rupture between the cenetr tica and containment isolation valves.
l Specify the ecdas that vill be used.
Provic e design details for j
typical penetratiens to illustrate hcv th criteris vill be tppiicd.
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(b) The extent to which the penetrations and the applicabic surrounding liner rentens will be subjected to vibratory loading from equipment attached to the piping systems.
Indicate how these loads will be treated in design.
(c) Critaria for cencrete themal protection at penetrations; include the temsraturs rica ce be pernittsd in the cencreta ender cpr.rering conditicas md the ti=a dependent effect that loss of themal pro-tactica would havo on ths containment's a cructural and leaktightness characteristica.
Indicate the themal gradients that will be uced for dcaign purposes.
(d) The espability of the penetratien design to absorb liner strein with-out severe diatress at the opening.
(c) The naner in uhich axial ctresses, loop stresses, shear strescas, bending stresses (in two directicns) and shear strasses dua to torsion vill be ec.bined in the pisstic demnin, if the full plastic strength of a pipe with regard to torsien, bending and shear is to be used.
a Stato the failure criterien to be used.
Indi mte hev the exterior loads including jet forces will be co-6Lned. utve factored leadinz ccmbinsticas for all the loed: for all typ.ms of penetrati:na cenetd m d in the deai p.
T.wltin how the Stsaderd Code for Pressure Pipinc,-
Pcver Piping, E 31.1.0-196 7 uill bs used for these loadine ecses.
In-dicata whether f&ctored load combinations vill be used with this code.
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. (f)
For all penetratiena, Lne criteria that will be u:cd for ths bendine of reinfer: inn bars which ha*u to cicar the opening. Critaria de fin-ing maximum slopes end nini=um bending r.tdii to avoid loen1 crushing of ccacreta anould be included.
(g)
For penetratic.ts between appronimately 9 inches and 4 feet in dia-mater, hev nernal, shear, bending, cad torsicani strasses vill be covered by the prescrcssing cnd the reinforcing hers.
2.3 For largs openings describc (a) Critoria with regard to opening sizes that constitute large openings; hence, eeriting special design considerstico.
List the nunber cad indic:te the size of the 1srge openings for the centain=ent.
(b)
The primary, necendary and thermal loads thte vill be considered in design of the openings.
(c) The stress analysis procedures that will be used in de ign.
(d) The method that vill be foll& sed for the desien (working stress design method. ultimate strength design method, er both).
I f ul-timate strengi n is used, the factored load ccebinsciens cheuld be given togethor with correcpending capacity recuetien factors.
(a) How the existence of biaxial tension in concrete (cracking) vill be taken care of in the design and how the nornal and shear stresses due to prestressing, axial load, two-directional bendine, two-direc-tional shear, end torsion vill be cerbined. Also, state the propered criteria for the design of the thickened part of the vall around the opening (ring girder).
(f)
The method to check tha design of the thickened atiff part of the shell around large openings and its ef fect on the shell.
Include the canner of considering prestressing, creep and shrinkene. Compariaen with etr2 sees in a circular flat plate vould not be convincing, since it eliminates the effect of torsion which is one of the cost impo rt an t effecta involved. How will torsional stresses be diecked?
(g) Additienal informatien on reinforcing patterns and prostressing pctterns that will be used around large openings (i.e., rebar size and spacing).
(h) The safety factor provided in desien at large openings. Sampic corpu-tatiens should be provided, listing all the criteria and analyzing the effset of all perrinent f a.ctors :uch as prentreasing, cracking, etc.
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!.9 For the desigs of the tendon anchorage zoneo, (s) Provida a description of the procedures used for analyzing cnchorage zones and provide typical cesults of such analyseo.
Include consid-eration of biaxial tension in concrete.
(b) Provide typidal dctaiIs of znchorage zone reinforcing.
Provide in-formatica to cupport the acceptability of this method to resiot the imposed anchcrage loading (particularly under long-carm loading).
2 Justify bcad valuco used for anchorage of reinforcing bara.
l 2.10 Provide en evaluation of the corrosion inhibiting characteristics of the grouted tenden prestressing syocco. Clearly identify all aupporting j
evidtnce and include discucalons of the following:
(a) Uac of, and reporto frem, specialized censultanto en the corrocion potentials and protection requirenents.
. (b) Grout co= position and interection with the tendons.
Specifically, includa ef fects of hydrogen or n.itrogen generated by the grouc and admixturas. Discuss the resulting possibility of c brittlement.
2.11 Provide discussions on the followingt (a) The extent to which the structure will, because of the use of grouted tendons, behave as a brittle structure in relation to an unbended design,.which 19 relatively insensitive to local cracking.
(b) With respect to the long-term surveillance program for the tendons, list the =ethods tc be used, the surveilicace intervals, the accep-
'1 tance criteria, and steps to be taken if the acecptance criteria -
are not cet in any instance.
(c) State the value of the bond stress transfer between the tendon conduit and the contracting internal and external cencrete surfaces.
State whether the crack control / temperature reinforcing and tendon anchor-ages will be designed taking credit for this bcnd or uhether it will be designed sidilcr to that for an unbonded tenden system.
(d) The maximum allowsble percertage of void area in the grouted crosa-section within the prestressing conduit and the basis for this valua.
(e) State taether the design acco==odates the secondary stresses which the tcudon will crgerience due to discontinuities of the shell, s
dynamic loada, ten garature, bending, etc.
(f) Provide the sequence of prestressing and grouting.
3.0 Materials 3.1 Describe the type and usage of admixtures, their coupliance with ASTM specifications, and extent of testing.
3.2 Provide the detailed cat rial selecticns for contain=cnt penetratione, list the corresponding ASn! opecifications and indicate NDTT considera-tions in their oclection.63-084
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4.0 Con"cructier 1
4.1 Sepplement the listing of codes with an cdditicnal list of sny docunents l
(U.S. Army Corps of Engineers, Sureau of Reclamation, etc.) which nay be used as the basis for your specificaticns to centractors to cover itcus not recognized by specifi,c ccdes.
State the basic on which these supple =entary csadatory opscificctions will be prepared.
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4.2 Sinca ASS: Standards do not define erectien tolcrences in aufficient detail l
to casure a satisfactory erection of the liner (e.g., they do r.ot caver local curvatu a deviacicas), provide the comprehensive act of erection i
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tolcrance atendards selected for the licer, and ehen that th2y identify j
and satisfaccorily limit all inaccurccies likely to occur during erection.
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4.3 Giva n detailed descriptien of the placing of concrate in the deme, especially near the center portion of the dona.
4.4 ILJiccce the extent to chich cylicing of reinforcing s:cel vill be cede by velding. State the location of thece velds.
l 4.5 Describe the " splicing" cf inclined bara, or hori: ental attrrups provided to taka the radial shcars in the base of the valls, with the vertics1 bars.
If done by lapping the dicgenal bar vita a vertical bar or by bending the stirrup around a vertical bar denonstrate that, despite bi-J axial tensile stresses in cencrete and vertical and horizontal crack i
patterns, the load in the diagonal bcrs or stirrups can be transmitted
-j safely to the vertical bars.
4.6 Specify the proposed' quality centrol procedures for the strength velds of reinforcing bars to structural elecents such as plates, rings, and sleeven.
i 4.7 Describe the ce= positional specifications for reinforcing bars which are to be velded, and what degree of non-destructive testing (x-ray, dye penetrant test, etc.) vill be performed.
4.8 Indicate the extent of user verification testing of certified liner NDTT propcrtics, liner thickness, ductility, ucidability, etc.
4.9 _Dascribe those quality control procedures and standards for field welding of linct plate that differ from the general procedures and standards.
Include velder qualifications, veldin.g proceduren, post-veld heat treatment, visual inspection, cagnetic -article inspection, I
liquid penetrant inspection and construction rococas.
4.10 Indicate the requirements that vill be placed on seam velds to assure adequate ductility.
4.11 Indicate the factory quality centrol requirementa thet will be inposed on the prestrescing system to inaurc that production tatorial vill acet design requirc=cnts and specifications.
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4.12 Describa the corrocien protectica that vill be r.iv:n to ths prutr:ssing wira or. strt-'.d at th: factory, threcah transport:tien, cd in the str*.: t. era g
prior to prastrsacing.
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4.13 Indic ts tas ec.spe end extent of quelity cetrol teette; of anchortse ce.r.
pur. nt: azd predn:ica meuortta asa: 611:s.
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4.14 If ths aietsr relie: techniqta is unsd for t:: ting Cedvtid splic2e, stets y
hev r. cay Ltchup predcetien splicas vill c1:o be tuted.
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.i 4.15 Civa the tastins procedur2 to be fc11oved if a t:tt eplies tuma cut to be unteceptable.
1 5.0 Ten tinx te sy-w i l l en ee j
Sol Provic's a t:ble ths:
cor.wres the ec: outed etresses for two different cru-sure te:t ect.ditica.1 vith th t i:: gut d stra::ts dei to tne dczit;n b.sia 4i accidsnt tiene, end to the earthqur.ke plus sceident ecaditicas.
The infor-r.ation ehould be sufficient to evaluate the relichility of the strc:s corou-j tatieno.
Explcin the methods used in the preparation of this tcble, tha physient ccnstants artployed, etc.
Include the follouings (a) Thernr.1 strea:ca at lare.s openings: avcluction of terocreture gradiente, ctress cer**str. tie ~s fer emcrets t: d reinforci.g ettal, nethods of c=esining strnets due to norms.1, tenatati:1. bcMinn end torsional Iced, assurptions en crc:hing, stressee in stirrepo, sec.
(b) Prestrassing.
(c) Inf1rcsca of chrickcge.
(d) Crecp.
(c)
Influence of linar cle: tic cnd plastic deformations.
(f) Liner stresses before cracking of concrete occurs.
(g) Influence of transient thor =si grcdients.
5.2 Provida en enctvais of creek si:n, cpecing, and pattern e::pected during centnint.snt structural tacting.
5.3 Deceribe the curw.illence c-:chtlitica nrovided by the ec.tniner.nt desten with reL:to.cs to bcth partedic inacection of tha prectressing craters and the etcol linor and periodic =cructural testing of the centain:stnt.
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.s the Icek rets testin is intended to h p?rfe.:d at ref:ia:d ;;ca:nra, prosida m svel4ctica of th uf.uitm isnt of wch c.tato th:t verld also ecrm t1 */alfy r: tiSe.r4 ct. at? arrt im*4 tvity.
Cer.cids in the avalta.tf.c n : 2.*,2.oni ?:9een* r.?d rm3111ues it.een--nc.tica ere:uire-r.ints.
h fie.ns d 1? J = vacie.4 t111 to u !a (c,7 6 41 vie.a:1 cacti;c et cale.ci.sd escata,.
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f~ppendix 5A (petge 5/.-5) stntes the denhn criteria for Citas I cystens tthi coep=Ints, csd refers to a nathed of entlyais deceribed in ths Flcrida sever Corporttica's ISAt for crysted Nivt Unit 3, Decket D.
50-302,.na;>Jnsnt na. 2 i,mpplerent ;;o.1) dated Fe'er.: J Y 7,1%d, Q: cation 911. To clerify the prcpost.d dreit;n criteria, cc:lirs tuct ell CluI I ptat: cr.1 c qcx2;,a vill ts esiceca unir; the ic&lirq l
cor.hinsticci, cai streso lir.ito listed in page 911-5 (Enviaed 4-6-65) of the Crystnl River thit 3 cyplication. Alco, ec= nre the propoced decir;n criterin uith ths criterie. for Marg
- ncy tre fullt conditic.:a i
rccer.tly c;;revect by the ADO 0::ction III Cc=sittee.
Provide otrain litits for the principal catorials of construction for the loading ec bination including ci:.ultanecus ccx1=um carthgache j
ani loco-of-coolant locdo.
Descrite c2thods that vill to uced for ceismic cr.aly:1c of C1cca I systens a:xi couponents. A3 caz example, describ2 tha cnalytical codel to de uced for t)c reactcr ecclect syatcu, incluti:q loca.ics of lusped = eases c.=d support conditienc.
Identify cpecif'.e recctor internals which cust =aintain their functic.cl perte..znee cepabilitica to cccure care chutdevn of.the reacter. Previda calculcted (cr ectinated) =c=1=un li=its of defor mtion er streca, at whid2 in dility to function cec _rs, fer I
each c urc= rt idene,1fied. Alco, supply the eclevicted (cr ent1=*.ted) caximum desi.gn linit value, cad the expected defor=ation or ctrecs.
In all co.ses identify the opplicshlo locdin.g combin2 tion cui state the propoetd =crain of safety.
For recetcr intctnsla provide infor=ation that vill per=1t evaluation of the effect of irrediation on the caterici properties and on the propoced deforr.ation linita.
7.0.
Tm'M._ F."Oc en "".*!:Tc7 ccm"'rs With regard to ther=cl chock on racetor ec=raonents, induced by operation of the c=str;ency core cooling syst.cn (2003), the PSAR (psca 4-10) refera to tha reculta reporte:1 in !'.:trr;olitan L11 con Co: pay's MAR for Three-Hile Isla d ruelear Station (Dociet 14.
50-20)), /ceriment r,o. 3 (mpplezcat r;o. 2), dated november 6,1967,
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j, Qucatica 11. Prveide detsils of the brittic fracturt r:21-nia,
- p includi:t eqastir2s und to cor-clate cerch cir.2 with tha ec1 41cted
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etrau ta:2rmity rece r (x.f, e 4 e7e, m.alte d tb c u lycia.
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8.0 _QJALITY AssLT1.NCE MATTEns t
8.1 Provide a general discugsion of the experience accumulated by j
the Jercey Cer. tral Pe>er & Light Cenpsny in the generci srcas of quality aravr-Ace and centcol.
Include references, if applicable, to erreriences with large ccavantional plants ovned by the Cc 7mny, and the org:ntratien, neeffing, and experience of any pcrueneut in-hcuse groups respon91ble for quality, i
8.2 Provide a functional organirstica chart for Jercey Central Pouer &
Light Cc=pany.dctailed to chev reopensibility channale fr r quality Accurt.n:a (design) ced Q:rclity Centrol (inspection) efforts, includir.g censultant services tulisted.
- 8. 3 Provide a functional organi=stion chart for Burns & Roe, Inc.,
l and describe the recponsibility channels for Quality Assurnnce (design) and Qu lity Control (incpectien) effo:ca, incicding safety rel:ttd c-lactrical, instrementation end centrol systens, i
j Include the alte organtration, consultants and service organi-4 zations which have been enlisted.
i 8.4 Will electreslag velding be used for any Class 1 preccure veseel, j
and if co that la the cpplicznt'a planning for quality control requirctanto during ichrication?,
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, i; 9.0 INSTRUlTITATIO:i & C0!iTP.0L 9.1 Ple:sc perfers a fcult analynis of the ralsy contcet =strices which dirr:cly control the cera-bre xe.rn.
ihis anslyaic suculd include considarctiona of-I fault datecerbility oy the prcpened teacing =atheds.
9.2 Please descrito the cualification ecste chich vill ha performed en vital instrumentation and centrol equip =ent (including viring) located within ecntaiarant.
4 9.3 Our invict' i dicates that eingla failures of individual pu=7 eenitore vere not coaaidored in analysa cf flev los: tranoiants tartinsted by tenitor ecti:n. Ple:2c en:ly:a all much tr:rsiert9 s su=ing thcc cra tenitor faila to indicata the Icos of ito reapactive pt p.
9.4 Picase describe the centrol cystem which initiates runback in the erent of asy=22tri: ::d ec tarna. What are cna consequences of failure to pro-i vide runbsek shen required? Can any failure ccess the cyctaa to utthd: u j
rods?
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'l f.5 Please analyze the consequences of withdrawing rod groups out of sequence.
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l S.6 Please describe your criteria for cable tray loading, and cabic derating, j
h routing and overload protection.
This questien is intended to explore the icnunity of your design to cataetrophic cable firas.
9.7 Are the circuits which tie tocether the engineered safety feature busses l
controlled canus11y or automatienlly?
I 9.8 With respect to redundancy and independence, uhat are the design criteria Q'
for the d.c. circuite which control the load-chedding and load-connecting breakers in the engincared cafety feature busses?
i 9.9 Are your station batteries located in caparate rec =s in a Class I structurc7 i
l 9.10 Please evaluate the stability of the external peger network. What is the i
effect upon the nervork of tripping one cait? What is the effect of j
simultaneously tripping both units?
I 9.11 What are your criteria with respect to diesel generator loading margins?
9.12 Please describe the quality control procedures which apply to the enutynen:
in the reactor protection system, c=crgency safety feature and containment isolctica systems, and the casociated cecrr,cncy power systems.
This descriptica chould incinde, bu: not ncease rily be li=ited to, (a) quality control procedures used during equipcent fabrication, shipment, field storage, field instc11r. tion, and system cocpenent checkout; and (b) records pertaining to (a) above.
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10.0 cu r i.' 5EI W TC " T Ic3 10.1 Indicate the various foundation levels with regard to exiating grade, finiched gr de, and the underlying soil strata. Alao provide a diccu:sion cf the potentiql fcr 11;uc2sc:foa eccer the vsricas atruc-tural fottixtien.
10.2 For the ccatsit=ent seit=ic design, sa vall ca Class I couipment cnd ite=a occh cn pi,,Legy r% crica the rathode for ccuputing ecde chepts, tcd p:rtic1 :tien factors, cad the cethecs for cc=hining frequencic:
7 the ccdal volten to obtria che dtstra vulces of secaleratica, shear, noment, ecc.
10.3 If seiz=ic cerf ficiente tre to be need for d :ign tu pisco of eerssi model c :1y:de procederta, explain th2 braio for ccicctica of ths ccefficic::: c 4 their typlterties.
10.4 State whether carthqucke streeces vill be added linearly and directly to the et.*.tr cpplic2ble ettesses.
.d.5 Under the fcetored lo-d design, vill the load capacity be linited to yield or below? If the total strces execeds yicid, describe the criteria ceployed to enoure that stresses and defor=ations are limited.
10.6 Previde locding ccebinatiens for which the piping in to be designed and the scrcco end str in critsris cpplied fce e:rthquake 1cadings.
10.7 For the prcstressing tendons, givs strand details, sheving the '
nucher of strenda per tandos. Alco provide apprc= irate diccasiena and spacinga of cnchcr ge cone: toth thrcu?h the wall thickassa cnd alcng tha circunicrence of the structure.
10.5 Describa functienclly the side gallery (cet th2 prcetrenning gal.lcry) located a' ose tae focadatica slab to abcuc grade.
o 10.9 Daceribe design criteria uhich ensure that criticci centrols, inntre-nentation, betterica, etc. vill cperate properly to provide safe chutdeen ender acionic or other dccign loeds.
i 10.10 Gi.-c the design critaria for design of the cooling vater intake ctructurca cnd acaociated pipi 2 critical to the cafe shutdown of the pir.t vadcr sciacic, hurricana ce bi;;h vaM cenditienc.
10.11 Canaistency of dcaign eith the 0.22; earthquake vould inlicate that Class Il ctcueturen z d ceuir ent be cesi:ned to 2/3 of the Uaiforn Buildie; Csd3 7,cne 3 _ quirz.sato.
Indicate the design criteria cad detail; for Class II structurca and co=penento.
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