ML19221A921
| ML19221A921 | |
| Person / Time | |
|---|---|
| Issue date: | 10/31/1976 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| References | |
| REGGD-01.103, REGGD-1.103, NUDOCS 7907100377 | |
| Download: ML19221A921 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION Revision 1 October 19 76 REGI aTORY 6 J00 E OFFICE OF STANDARDS DEVELOPMENT REGUL A TORY GUIDE 1.103 POST-TENSIONED PRESTRESSING SYSTEMS FOR CONCRETE REACTOR VESSELS AND CONTAINMENTS A. INTRODUCTION tion or pieterence m sue of the tendon for a pnen
% stem. % r is thn pude miended to Jnt oura, t i.e
(,cneral 1)esi;.n ( ntenon I. "Quaht) Standads and desclopmt ni of retmeinents of turrent sy sicms or the Retoidt oi Appenda A. "(.cner al l)ewn f uteita f oi daelopment of new }nestresung sy stenn or u rnsepit N ude.n Pow er Pla n t s, io 10 ( l R l'ait 50. "I neinna J pt nt-lensla ult d prest re ntly Id Ultidih tu m and k illl/Jiliin 1 Jul!Illes. iCslulics t';al llie t jllJil!k aIhins I!lal l sJ! cts s) st elli slHHild riiCet in tilder til bC atteptable ha the stilht nies. % 3teiln. and Olntpi4'.cilIs titlpiu t ant ti be desicrn, lahnt.ned..on! t ictied io quahis standaids NRC stat t aie identified m the regulatory poutwn. Rosk tonunensur ate w nh the myoit.inte of t he sately t un<
amhorage q uems are not cosened by tha puiJe tions to be [w tonned llus guide idenones the pou.
iensioned preshesuny 9 4 ems flut hne been icuewed Typv of Systems and approud by the N R(. stall foi u se m u n a c t e rea<1oi u wc h and o m t am men t t 11 aho dewiibes 11 e t y pe of tendon xlested usaally dhtatn the those of snesung eqmpment and aho atic<ts the timne quah t u ations auertah!c to the NR( uan tot new
}hnt lensuined prestienm/ w uems
< >l e nd Jnt hot Jpes.
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B. DISCUSSION separated mto three penerai tategories acondmp to the h P" "I Nndon in use. w oe. st rand, and bar 9 stems.
A po+tenuoncd pichnessm; o stem n mnposed ol a
' nd anluiges f or thew tendons a bawd on cahi piestressmp tendon tombmed u nh a method of sucump w@ or dnutheanng pontiph soinetunes a toinhnu and.unhonog the tendon to the h.odened tonuere. ihe Non ol IM tw ei n ud Post tenMonet. prestlesung wor d 3) siem n u mmiinly awotiat ed with the dit ter-
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eni pr o pt ic t JI ) }bnt-tensuined prestlessmp 9 stenn im and end anthorares.
the nurket and n undentood to nalude the i> pe of lendon, ant hot Jpe des h e..md u tenmp cipupment awo-tiated with J pnen % stent.
wiies pitiu ped it) tiir m a tendt m. U tres inafiub ctured lit
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i li n not pr.h thal in dntow the detaih of ah of the A4.'l. "l'ncoJted Shen-NC hes ed U ne 101 YIe 5 t r e %Cd WJn) pant ICnuoned picsticume 9 sienn asailable m the
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i mted Nalet \\loiemer new pmt.tcinmned presticene ts pes t BT tir U A). Ocpen hop on w hethei they Jie tii be a sienn are bemp descloped, and esntm; ones aie hcInc used w nh buttons or wedge
'n h or age s.
n uJilied. I or these r ea son s the dest ophons m thn imde Jrc hunlCd 10 9ucms InlCd in IJble \\. ad UI lhe BHRV sy stem. deseloped m Sunfeilami by whhh h.ne been used or propined toi uv Ha ke n maie r. Brandestun. Rm. and Vog t. na wm
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Some e \\ a m ple s ad ine are pr e se n t e u m order to ide n t il y more specifically the 9 stem bent dis uswd s rt ir,
.di itin Mi p s t'i ihn and inhi \\%l st ptli n :! n.
and proude a teleiense to some plJuts Ioi whhh the g,g gg ;
l g 9 stenn in Iable A h.ne been pioposed or ' p} nosed. l he fij stiv i a 1916 Hmc 5t m l.
Ni m. W i. IW s i, J
i c amples tited are not intended to indhate ans ieslih-1914'1 USNRC REGUL ATORY GUIDES comments shouid be sent to the se< ret.rv of the comm.ss.on u u-
%wm u-e m e w oC m eme k ey w Rogue or, cu. des are...u.d to desce.de and meme ev aabie io th. pu bhc methods ac c epi.t.i. to ih. mRc st.o of.mpiemeneme spouf m p rts of the h
commist,$n i resuisticas to dehnece temn ques used bv the ste'+ a eveio m gu ynm m %,owy wn b, a
,me et.ngspoonc problems o' postuteted ecodonts or to provide gu denc e to apph a
c ent s Regu.pory Guices are not subst tures f ar regulations and comphance 1 Power Reacto's 6 Produ a e
ute them is eat requered Met ude and notutmns ddterent fro t " ose set out in 2 Researc h and T est Reactors T T r an spo rt st ron ee guides will se an optatue if t hey prow'oe a bes,s f or the hndmgs requis te to 3 g, g pg,e Fuent e S Occup m ne W eith the asuance or c sntinuen, e of a perm <t or h( ense be the Commist'on 4 i nw.c onment ai and 5,v,ng 9 Ant trust Rev'ew Comment s and su ggestions for emprowomenes en these guises are erw ooraged
's M a'*os!s and Prant Protec tion 10 Genevat at eli 1,mes and gu des wol be revised as appsc.priate to accommodate com mants and to sofies t sea mformation os esponence Th.s go.de was eevised as a Cop,es of pubhshed gu des may be obtsmed by wr.tten request md.c at.no the d.w's+one des red to the U S Nudear Reguis'ory Comm+ss'oa W ash m gron DC
- sult of substentive comments race.wed f rom the pubhc and ad:1httonal statt 2,.Wh Attene.on D rer vor Of ht e of St andards Deweicement rew ow VUUd1UU '/ /
con t anonen t s built in the l'nited States. The mam unus length of strand. A maximum hoop p:estressmg teature of this system n the use of cold-lonned force of about 6600 kips per luicar foot of sessel height buttonheads for ducet beanny at ech end of the wire.
was to base been used m the desyn of the PCRV head The prestrewed conciete reactor sessel (PCRV) of the region of the Delmana Sumnut Power Station."
iort St. Vram stanon in Colorado uses the IlllRV sy stem wah 169-wue tendons deelopmg approximately The VSI stond sy stem. wluth was deseloped m 2000 kips capaaty each. A number of containments Swit/erland, uses a wedge ancimoge hir strands. I ach usme the illlRV sp. tem with 90. IM, M9.170. anJ IX6 strand is drawn t!nough the openings of both the beanng wues per tendon hase been built in 'he United States.
plate and the anchor head and is held by a two-piece
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The wire diameter is 1/4 mch (6.35 mm) m all cases spht cone wedged t ghtly agamst the mnei surtase of it'e except for the 16.Lwire tendon. w hich uses 7 mm (0.28 anchor head. As an example, the contamment of the mch) wire.
Rancho Seco Nudear Generatmg Stanon m Cal-torma uses the VSt. sy stern with tendons consi<nng of 55 A wue-w mdmg sy stem was used to proude hoop strands, each tendon deseloping 2250 kips car icity.
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prestress for the llartlepool PCRVs in i ngland. Tha (1he I reyssinet. St I L.md VSL sprems wcre formally method of pnnidmg hoop prestress is smular to that for presented as ahem itnes to the preuous!) aprimed conser>tional prestressed concrete tanks.
BHRV sprem. The VSL sy stem was chmen by the apphcant. Coinequently, the l'repsmet and Si l I sy s-Strand.9 ste ms. Strand sy stems use a number of tems were not reuewed by the NRC statt with iegard to "st r ands" that are bundled mto a tendon. A strand as then acteptabihiy toi use in nudcar pow e r pl.m t made up of a number of factory twisted wires. Stress-con t a m me n t s. )
ichesed strand is made in two forms The hist is the sesen-wire strand, wh> h conforms to ASTM Spea!ica-Ihe Snewteel 5111 muhnnand sy stem. winth was non A-416 "l'ncoated Sev en4ne St ress-Rc hes ed descloped m the l'mted States by Snewteel Corporation Strand for Piestressed Concrete. The second form m tooperation with flowlen \\tadune brks, n s harac-consist s of larger strands that are made of Luger tented by a three-picte slutted wedge cone that gnps uidindual wues and may consnt of more than sesen tlnee stranJs m its senated teeth. with a numbei ol wues per strand. lhe larger strands are not cmcreJ by wedees m a smgle anthor plate makmg up a multnnand ASIM speaGeations and have not been used for the tendon of the desned sve. As an example. the cont.nn-const r uc tion of nuclear power plants m the l'mted ment at the lhree \\1de Island Nude.n Sianon l'un No.
use s a Snewicel S ll mulnsnand States.
2m Pe nm.> h ama sy stem tonsisimg of tendons with 541/2-mch. Grade Strand systems have been introduced m the consnuc-270K 7.wne sirands per tenJon. eath tendon deselop-tion of nudear power plJnts b) Strand 4 rap. VSL.
ing 2230 kips capacity.
(Vorspann Sy stem I osingerb Stressteel. I repsmet. and Si i I (Societe d1t u des et d'l quipements d'l nter-Ihe i reyssinet sy stem was named atter the i rensh prises) lhe last two systems were considered but hase engmeer I igene I rey ssmet, who imented the anthorage not y et be-used m the lJnited States m nuJear power deuce m I"N. The ongmal anchorage deme was f oi a plJnts. Ih the I rey ssinet and Sl l:1 sy stems base been wue sy stem only. Ilm n a commonly used tonunciual used in I urope on concrete reactor sessels.
sptem. The a? thmage somnis of a male comcal plug and a temale wmcal recess. The plug, with the wues lhe StrandMrap sy s em has been ieuewed and spaced esenly aro md its penmeter, anthors the wne by apprmed or.l> for app!)ing hoop prestrewing to some wedge acnon. Asj resuh of omket iciporements and PCRVs m the t aned States. The basic poncipics of subsequent desch 6ments, the l' rey ssmet sprem now applying hoop prestressmg to the PCRV by the Strand-also h.n as ailable anthorages f or str.md tendons and Wrap sy stem are the same as those of a wue wmdmp other shapes ot anthorage deuses ditterent f rom the sy ste m.
In one of the design me. hods, steel hned ongmal one. The same wedee punuple loi andonmg the cucumicienhal precast concrete thannels are anthored tendon n retamed, howeser Conaete iemim seweh to. the outer cy hndncal surtne of the sewel by base been budt m I uiope usmg the I rey ssmet snand remf orang bars extendmg radially mw aid f rom the sptem wah a maxnnom tendon capauty el abour 2000 pres.nt channels. The strand n anthored at one cud by kips.
inC J o s oI a lapeied wedge pnp m the nb between aJ pcen t thannels and then wound around the sewi.a Re Sill sy stem w as descloped m l iance bs C the desien tension tot a numhi id mn., and anthored m Soaete dltudes et d'l quipements d'l nierprises. Ihe the nest adiace u ob. I Ah band of cucumteiennal ssuem fea t u r es ilneadcJ anshorage htungs extinJed presnessmg tonsnts of mulnple layen of su.md wound onto the ends el a pioup of suands. An.mthoung,ut n onto these thannels. I mh layer consats of one
- t. otm-then tlucade.1 onto the anshorre Inimg and tumed I bc i& w.a w no P.% r ' son"n he un uno L a \\ g' 3 tnssnau.oc nh e nu ions s o m m u.,a s im 126 s
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tightly a;ainst the beanng plate. A tendon is composed C. REGULATORY POSITION of one of seseral sudi anthorage tittmgs on a common heJIlng plale.
Iln5 tegulator) etilde CanCis the peiletic qliJllficath111s of post lensio')Cd prest ressing s) stCnB usCd W tonCiele
/AF kITlemi. lllt ss stenn u se a fiumher i>t higli-reacti3r senels aiid tiintatonicills, with no atteinpt tii tenstle-strength steel hJIs thjt are hundled into a tendoll.
c\\ tend 1]s gope to deMyn ayWit lhe acet plJbiht) ol The bars are mJJe f rom an alloy steel tontoonmg to any pmi-tenuoned prest ressmp 3> stem in conjunction AST M Specifications A-322.md A 29. A-32 is a general with a specific st r utl uie design would hne to he sptNillCatton tilat cthels only the cllemlCal 04npthlinin es JluJted t)U a Case-h){Jse bJsis. An) pntpthed s)steln of Inan) grade deMpnJ1itins of J!Io) steel hJis, alid A-[I suhinillCd itH NNf applina! s!HnJId.iddleM tilC I t 1!-
is a spt'cllicalit.fi gning pencIJl regtulellFCitts Itir llol-Iniw ing rolled and cold-timshed carbon anJ alloy steel bars. Ihe Illec h anlC al Jnd pll) slidl IC4uirements lor Ilie pre-l, pint-teilshined prestrewine sy stella tiiJt i!Jse hCen stressing bJrs ale ctneled h) ASlM SpettlicJihlll A 22.
appItned in plCshtus nuclCar pinwCf plJnt licelhe app!ICJ-Tnioated Illg}i-Stienyllt SleCl llJ! ItM Yr C st l C s4 n g lions are regarded as Jccepted s)sleink SCe 5ab!e A loI Con C r CIe.
Identitication. When the clann n made hy an apphcant tlui ihe prest ressing sy stem pmposed is an accepted llars are cold-stretthed and also stiewichesed by heat ss stem, sutlicient infon:utn n should be pnniJed with treatment to pioduce the prest uhed meJunical proper-c'ach apphtathm to demonstrate that the sy stem pro-ties. lloth detoimed hars and smooth hJrs with tineaded posed n the SJme Js the one IhJt wJs JpplosCd in ends aie Juilable, but only 3nmoth Mn hase been used presions nuticar power piam heense apphcations. Poor for nuclear power plant conslIuttion ni lhe l mied 3py,3] of 3py sy stem does not ichese the apphtJnt of States.
the respon sibih t y for demonstrating that its sy stem inects all the reguliements of the Code lor Concrele The Stressteel Corporation m the l'mted Siaies uses a Reactor Vessels and Contamments?
bar sy stem. The bars are stiewed by means of a hydrauhc ptk that tonsnes of a toupler and pullmg har-1 Clunges in pre:ticsung element matenais or m T he nornul commercul techmque f or anthonnp uses ant h o r a. e items of preuously auepted systenn that anthor n ut s.
Dunng s t ressm g the anthoi nuts are nyy,equne iepeatmg the sy stem perfoimance tests are con t m uo u sly wewed down en washen and hearmg identiticJ in Subsections Cil and CC. Article 2466 of the plates. and the prestiessmg f orte n then transfe red to Code for Concrete Reactor Vessels and Contamments.
the anchorage assemHy by releasmg the force m the pek. Wedge and gnp-nut anchorages a:e also a:nlable to
- 3. Any new post tensioned prest ressmg sy stem anchor the Sar; they hne the aduntace of bemp able to should meet the requnements set forth in the Code im gna the bar at any pomt along its length.
Concrete Reactor Vessels and Coniamments.
The containment structure of Il.it Rohmson l nit
- 4. The use of any post-tensioned pre >tiessing sy stem No. 2 m llartsuDe, S.C, uses the Stresteel hai sy stem should permit the apphcation ol an mseruce mspection anchored w:th llowlett Gnp Nutu The tendon.whith is program that will serify the contmued funchonal capa-composed of sn 1-3/8-inch diameter Sirenteel bars, bihty of the structure. Implementation of this program deselops a capacity of 1428 kips.
shoulJ not degrade the quahty and rehabiht) I the post tensioned prestressmg system. Regulatory Guides Grouted and Ungrouted Tendons 1.35, "hneruce Inspection of Ungrouted Tendors in Prest r essed Concrete Contam men t St ruc t ures, and All of the concrete reactor vessels and contamments 130 "In se r u ce inspection of P3est ressed Concrete designed and butit in the l mted States use unprouted Contamment Structures with Grouted Tendons," should tendons except f or ill Robinson Unit 21bar tendons),
be consulted for recommenJations concermng the use of Three Mile Island l'mt 2 (strand tendons). and I orked unpouted and pmuted concrete contannnents. re-Rner (strand tendonsh all of which were designed for spect n ely.
grouted tendons. On none of these, howeser, has design credit been gnen for any bond of tht grouted tendons.
Whether grouted or ungrouted tendons are used, a usul moier anJ hessure wi < oJe. w oon in. inu+n 2 means of deternunmg the functional capahility of the che late 4 scien. Plus aJJenJa. as endorsed by the N Me.o structure dunng its hfetimt should be nailable. Tins l' 4 """ C""""""""L I I"' ( "d e " ' " " e " ' b " "d " ' '" e" tor en&re nent by t he N Rc suit copics ma > tv < LumeJ results in a need for reliable quaht) assurance procedures
,g m1 Met h.uual t ncmeat t'nneJ for the tendon mstallations and in a need for a rehable g n;.meenne c e,oa. M5 I ei 17th sucet. New Tork N i.
structuralinseruce inspection program.
Inoi?
\\26 \\ d 1.103-3
D. IMPLEMLNTATIOfJ ing with specified portions of the Connnission's regula-tions, the procedure described he:cin is bemg and udl
'lhe purpose of tlus setti in is to piouJe inf ormation continue ta be used in the esaluation of submittals le to apphcants regarding the NitC stati's plans for using con st r uc tion per mit applications until tins guiJe is reused as a result of suggestions from th : pubbe or this reculatory guide.
additional staf f reuew.
Ilus guide reflects current N1(C staff practice. 'ihere-tore, except in t hose sases m w hish the a;,phant proposes an acceptable ;!ternatise inethod for tomply-TABLE A STATUS OF POST-TENSIONED PRESTRESSING SYSTEMS AS OF MAY 1976
.1 pyro rcJ lAcJ Sulm aticJ Re:icu cd li t tite In l '. S. \\'in lear l '<.r I.i< cn sin e I or I.it vnstne
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Pon er I'lants Sisitnt Rcrten
.1< < cptabiltt s Start To Ilite lill R V N
N N
N 90,169 l 'U.
1 % W ires (14 :n ci lh.s B ires t ' 111111 Q )
V S t.
N X
X X
( 5 5 st r.ind s )
Stiessicel N
N N
N S 11454 s t r.in d s i i resssinet X
( st r;111d P SILI 1.
N
( st ra nd i St ressleel N
N N
N tti l I N !:1 l).t r. l lTRY Strand-N N
.\\
W rap 9
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UN57ED STA f tS f
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NUCLE A't etGutATony covwsgion W ASHINGTCM. D C. 2CSSS posy at,a A NO f t f 6 F AtO V% Pa uCLE A R N E Ca.$k A TORY M'
073 ict AL Sv5)Nf 55 c o w uissio m asuwauwus M
P( N 4 LTY $ OR fMtV a t E ugt,130Q O
126 146