ML19322A362
| ML19322A362 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Crane  |
| Issue date: | 10/30/1974 |
| From: | Creacy C, Logan E, Pittman R BABCOCK & WILCOX CO. |
| To: | |
| References | |
| TASK-TF, TASK-TMR 560, PROB-741030, NUDOCS 7910040539 | |
| Download: ML19322A362 (41) | |
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A-DESCRIPTION OF FROBLEY. On 10-5-73 RC 'e c,verlo.sds hud beer. cver-ridden at A.E.C.'s k%iE.d direction. Daring; drciped real incident (See CFR 556), reactor oj err.d.cr atte: pte.1 f'. G M 'G
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the Wld Zcnc was analyzed in the response of MP.h ALC's cencern vss whether or n:>t unuary 22.1974.- Or. L i and Tom Conlon discussed the analysis and it was finally gQ.;. unjerstood tnat !.EO int (rpcc eed the Joint Desi;;n as.. Cv11ncer anu Flat Head v:iereas K g' Dra.srers analysis f s for a in.b and Flag,e. It was agreed that the followin,r would ..@m .y he de,e and in:Iudec in the raision of the report:
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, - w; r Dresser vill do Stress analysis of cylinder.ind Flat ifcad as it applies to 6p/ 1. Electror.atic 0(sign. .M. F ro see that sc.ecne else has reviewed the Stress Analysis in addition 9 '( ? 2. AEO w to Dr. .41. Presser will da. Dr.1.at 1.111 also apply his PE sta:p to the g ]4y a:121y sis. W,.w' N '.$(s. 1
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. QSjj hre is a statement in hocodix El and a Co:puter Printout included as Appendix Q%? $@M i E2 but no ampIa.=2 tion as to what the printcut is or how to use it. AEC suggested -that Appendix E shoul; be eg.anded to explain the prir. tout or a:plify the statements in App.El. Dresser vill cxp nd the statements in App. El to explain in words that the W9M n1ve was not everstressed cue to the,:old *.!y30 static Test. The printout will he d% P ^G deleted. 20fii; MT ) Dresser co: cit tee to havin; their verk cc=plete in one week and vill send to Mr. 29Cf Thielsch who will revise the report for re-subnittal by Duke to AEC. d@y g[yNow,d.4 It is fully expected that this vill resolve all AEC questicas and the valve Design T will te acceptable to AEC. e4%d {thph CT5-r The fical repert to be submitted for ! 5S-3,4,9 vill be used as a generic answer with spc:ific references on a contract basis ac nay be requi'.ed fcr ! 55-5,6,7,8 &ll. g.5' ..m-
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Repert lio. !!SB, dated Hoved er 4,1973. "Eoluat ica of Veld ? s i,e t Design p gn h5Q ~," So,ndness end integrity of weld and flase Mtal in Electre oric tel~cf Vilses RV-67 (RC-U.A Dresser f ndw trict valve & Inst ru ent Jivision. Units I, :. 3 NQh Qp!
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sconee fluclear Po.rer Statio... Duke Fewer Company" and P.cco. t M. !!43, deced '[$ Q [{ lovember 3,1973, "Resolut ion of Accept ance of Electronatic Relief vaive; IRV-6? $9 AC-66) f ro, 3resser industrial Valve & instrt. rent Division. Units I, 2, 3
- WW WEE fcorice fJuclear Poer Station, Duke Power Company + ra, str.itted Of Cuke Po,er Cccpany d, Q@Muc:D.
Q,Q~@d 9 2/ia;5' etter of t'ovener 3C, 1973. Je y 4 M*E$nW>D' G k 'hc above ns. ed reports have been reviewed in the R3:II cfflets. This 'eview 3 lisclosed def.ciencies in the fo!!o.<ing areas: f Ne.N Y s u% My pi n d$'M , We1d docu-entatIon EEhfhh NlIq.[PN!jhd Valve body.aalysis l
- i. Effects of hydrostatic ov2rpressurization 97 %
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! $3pfgM g%g& i m rmation t',at should be provided by the licensrc. j $c MM e M w;:W , ( s, be9%. c p &,Q M M L,. -l s Wel3 Doc r *,!at Ion bb m,u. 2 1 p. l h M d.4 3 %,a .; r J There are variations in the welding procedures used on t*:e val <e.ind hM% MMN thcsc used for the nockup, particularly in t* 2 area of -ost-weld seat Jg; Myg Rig t re a t c:e r.:. %.Nr 4M A.-.er%a n-b Velding p ccedure qualificati on data conflicts with t*se welding g rocedure W:r*#W 9 WE w n M.- m since the procedure requi es no post weld heat treet-+r.t e:ile tie "s w.M~p,4NJ~d F M m n. ,.c c. precedure cualification (ws-97, Rev 2, dated ':ctober 16, 1973, ard T S# dky VS-G, Fev 3, datc<' October 17, 1973) Indicates post wid heat treat-ent.
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%5D &c \\ rhyy;hf,h h Wh Orawing f+ %63 Indicates that the welding procedures. to be used f or the lower base to top fiange weld joint are WS-345 and US-7./. Cocisc ent at ion 5' W Q k bz@ Indicates that WS-65 and WS-97,ere used on both the ruba anc tne WMW M. i ,. \\ yrw p.5 j m&: producticn valves.
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, u. g;4 qm Wxw 1 =. t.~.x @m jMp .m. The licensee should furaish docu ented evidence that ;ualified welding W @h: h f.,NW M i procedure:., with continuity; were used throughcut fabrication of the ) M.+ W"^Q valves and in accordance with appropriate codes and specificat.ons, i r;M,: a W sMGO%y r Di$ : & p Qp g;Q.. M ' i I. Valve % Stress Analysts $WN 3c v .m., n+m @j k:W$2D G t m hevi w nf the Dresser stress ana*ys's for valve body as cuttined in NM Wh Duke f,er Company report I:o.1143, Appendix E, revealed no speci"Ic h.h[3 y M '.:&yff[Q' l stress aralysis of the wcld joint betv.cen the to::, flange and the lower base . M?M47 ?f dih cs shown on Dresser Oxg 418463 In addition to the stractural discontinuity VQ'p%Q iffs?N) MWdhdj%, at tac weld joint, there appears to be c. possible strest encentr.ition vM =r w 4%r m:e ? -Ap re f .e m&p.yQ t -+ q Mw
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, l' nit Ibn3E** 19 N.. g, a d frc4 M m us.s n .h R. C. Burnicy. Aux. Systes (2281) q 6 Fil e No. Iiss-3,4,9,5, A 1.3.1 Ar Cost. or gef. Duke. PET-ED. JCPLL, FTC, apt.L SMCD A A 10. /.1 0-ess e r, Date S u n).. . etinit with Duke, Drecrer & AEC on Electrcoatic Relief valve 3/5/74 i g................................... I attended the subject rc.: ting held at DP Co. in Charlotte N. C. en Friday March 1,1974. The followin perscnnel s ere present: 1 AEC (RO II) Dresser Ej,V Duke S. K. Blad. ley, Jr. A. Herdt T. R. Bordelon R. Eurnic T. Conica Y. S. Lai f L. E. Davison J. C. Bryant Tom Cotton K. C. Canady Frank Jape Dan Cardner G 1:alnut Thielsch (Duke Censultant) %a ? The meeting was held to discuss additional AEC conce ns in response to the re-f vised report that was subnitted by Duke en January 22,1974 There vere five (5) r areas where AEC had asked for additional inforcation (See A': tach =ent #1 ) and they felt the responses submitted to items A, B, & C vere nat adequate or their goestions had been mis-interpreted. AEC has no additional qtestions; however, replies to A, B, & C nust be expanded as follows: y A. " eld Documentation A codified Appendix B-6 to the report should be included to show the Thickness Range ter whLch the Weld Procedure was qualified. B31.7, which was referenced in the specificatica, requires all !!DT to be perfor=( af ter Heat Treating. Mr. Thielsch stated that in this case it wouldn't nake It was agreed any difference whether NDT was before or after Heat Treating. that Dresser vould try to establish the sequence in Manufacturing to determine at whte point NDT was performed. If no records are available Mr. Thielsch will add a statement in the report to the effect that it makes no difference with the materials and design of the E1cetremstic Relief Valves. Apparently, either one or both of the above responses are arceptable. i t s 9-v 'T ' ~ ~ 'M 7) ? J:< URT@ikn.p we g4f. ?"W*c 5 m .7r r., %.
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.y. W ='+~ww,, d$$M cxisting at the edge of the weld zone and LI e Interf ace formed by the i"M&p3 it.ating parts. . $NY@ m.snw h,IM~ % $] The licensee shculd evaluate this stre",s concentration and the pcssible $*#? effect (Sat it could have un t!'e calculated stress levels in the welded p[N joint. In eddition, the licenset. snoeld :; te into consideratiose the -tress d;c to str'uctural discontinuities et the welded ioint as evidenced $NMEl oy Oressor INg.418!+63. fi@;&$ M;ipM p ,.u n,h C. Tf fccts of Hydrostatic Overoressurt rat Ion 3,, ss e n.w~w~>rn The hydrostatic records Indicate that the valves were tested. to 9000 psig DyYgf.! .jlth I for three minutes. This is considerably above the hydro test reg.irements of ASME Section 11.I,1963 Edition. @p%'CJO re hv Mx-/? The licensee should evaluate the possibic dar. age caused by tie excc ss Whed-f.,
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p% M @ M $ $ @ EE8 $ $ $ $ f b 5 N N $ $ $ $ b $ $ $$$ bNN 4 A A,$ s s &? e enc y gg (qui , IMy 9 .d 9/ m. T:.v-Z Babcock & Wilcox c r n -,ceoc,.c o c, o y A[.-[- f [jf4,' p[,-b.E-[4 /7pJ '<[i8 % k' P.O. Box 1250. bNhturg. Va. 24505 4 m ps,y,w., -}L, 3i pd d(b ~,(b d? f 7~"l #w';M"M**
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w ~ u i. f y fy [,.j gh.g r.- Mr. S. K. Blackley ..i 7 b.#-M .f Duko Power Company %) / j (*'[.gt Post Office Ecx 2178 /T . /' m s~ 6 'A g'.; Charlotte, North Carolina 28201 p , Ch i *g * # ' "g ' g'.- .*Ie /.TTENIlO'i: T. L. Overcash , arm h 'Ay SU2 JECT: Oconee 1, 2, and 3 3 Dresser Shutoff Valve.RCV2 4
REFERENCE:
1. Duke letter to L&V dated Fcbruary 1,1974, sano subject (05-18) ? 2. f BLV letter to ruke dated November 13, 1973,- sanc subject y Centlemen: f4 After further review of the operating data on 2 RC-V2 with the 25 f t./lb. p.f 4
- stor, Orcsscr has stated that the 1:.r;tr cotcr is a satirfa: tory resolutisn 4}
f t;;p of the operator problen. As you cro avare, the prescat notar en 2 RC-V2 { does not teet insulaticu spacification fer service ir that area. ] Dresser has ordered replacement r.aters for all three Ocenca units, and they should te t; availab,le for installati:n about June 1974 N 1 If you have any further questions, please advise. =] Very fruly yours, A:: C, a. %;7 d C. A. Creacy Associate Project Manager d CAC/ww w a ec: R. J. McConnell./ fi C. H..Baccich 'f I-H W. Fassse .o c k R; e -1 w aacocua wvce.come orirsianan.oita7 Y. -. n,_ = r... - n. _.g;c. x.nz.u..-.c = 6-s
f g' WE~ BABCOCK WL...'COMPMY ~~',.. - e COX f 1.; D l b* GENERAT10!! GROUP ^ h M s isp To. l w y: , C). R. R. Eesch' %o e,'Frea a ( E. L". Loc e 'b Q ~ aos m.s-M-.. Cast. ,1 F:le No. Q[s% .nse"pov r or Ret -]
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Date .n -q y '~ 9 ' EPE CH 1 EC L (RC-V2) and 1 RC-1 (RC-71) 12/13/73 S' p Si q l n.. u....................,.....w.....% ' c. m(( j ,1 4' i 7.init Owitch LS-9 vas added to the 1 R~-Y2 circuit en 20/12/U.' [See F'c.1). 'Ay ,S. -, '"'Ene switch was set to stcp.valYe travel at L turns of "ha handd. eel. fr.cr: the l T.t - ' ~ .fn11'closetrocition.. This appears to have solved the opening y cbie as, l[y p Lthic val *re vaa, opened on 12/16/73 at - full te parature ar.d prer.sure. - Now the s 0 l j, valve ennnot be closed. Tvo attenpts were mde on 12/17/73 and beth tines the, ',1 qt. ; M ^ overloads tri red. The 15_ ft h noter is evidently not ntron.renogh to surt ,k-.-l' t& F 23 ' the valvitevard the closed position. T,b .., Q, M).. 7., ~ As you knra D2e replaced the'ycle bushing en 1 ECll' ( l' FC 'O. ).'on 11/23/73 *~ ? ' n y '(SPR # 570). The replacenent bushing was not the corren ene ss Rockvell hnd _. @ Q@ 'q JJ I 3 43 ~~
- shipped the wrong replacement part t1 Duke. DAe had planned u -epiv e this J'[p Q
buching during tha Decenber outage. The valve beeane inoperable en 10/16/73.< ,,,ip 'l-24, The valve indicates open when emnded cyan, but syst':2 conditiens inlicate y
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. j the valve, stays closed. If the bushing is stripped as bercre. it see.r, the valve <1 Q vould be hunc open rather than closed. This problen vill have to to invecticated ' _. ~.M. [,d . during the next Unit I shutdown. Duke has closed 1. RC-3 ( 1 EO-T ) to prec1tde MN y . ' un open failure of 1 EC-1 causing a plant shutlown n:: /j.I.f occurred en 11/20/73.
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he Unit I pressurl=er valve line-u.n is as 411cvs: . v.<' y c p q," 5 5s Spray Valve (RC-1) Closed and Incp 4able i (W ah $ %p Sprety D1cek (E-3) ' Closed v y 4 F.lec* rcestic Eclief (EC-66)- Operable j Q Elee. Block (RC 1) Open cnd Increrable ~ 4 d b Cf 31nce IL/15/73ve have teen able to obtain ecnrarstive P.CS and Tr^3sur;:er barc-n M concent.rntions. 'Tn; is in respense to CFE-M7 an1 L. A. Karras r's n o of H/10/73. f[ %*y Figures 2 and 3 are plots of there values for both Unit s I snd !!. The Unit 1 centinuous vent (.1 to.h spn) vsa secured un 12/17/73 Bercre the sy ten is cooled'~d ?, down,ve vill investigate for lenking valves etc. Unit II is irdicative cf norcal operation since a consious effer; has been made to ca!ntain ECJ beron cencentra' be. - ' ?.% $1 .Z constant with c.nly the spray valve typass flov into the prescuriter. .w .b w y r C ELL /bh p.~
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_.m rp frM d TPr BAECOCi & dit.C0X COMPAM h P R GENE.uT10'i GRO'JP j 4R W1 To l l h R. J. M:::nnell, site cperaticns ::1:s er %w'e Frc i [s'.> 4 ,Scrvice (CM5) ' D 5 '" 3 D R. L. Fit ran, :::: lear';. wM
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Duke F:ver Oc.;a:y ';FS-3 SIR 560 (,Ej[ Subj. Date M RC *i2 nove:her 1, 1973 4 y.w t{Q jn..........................o+ j wj M-ESS-3 EIR 500 rep:rted that two =otors hs.3 burnci cut shile atte=pting to ope.. %~4 the sub'e:t valve at no=al operatin.g te=peratures and pressure, with the themal e%w*. overl: ads en the :: tor typassed. ug kg 'XSS L SIR 110 repcrted that the vCve vas cyclei (on Unit II) during reveral ] y') te ;eratu e incrc ents while the plant vss being heated up. '~he valve opera *.ej v4d satisfacterily t.: lever temperatures tut when the system was approxist..ely 500 7 $2 the VC e veuld not eparate, even *heugh it had been cycled every 1CG'? while pt heatirg up. 1 .d4 i M
- h. Eeverd centcc s htve been made vi*h the Dresser Valve Ocapany, and it is new w
pg felt that the pr:ble: sy be :ine to differential expansien between.he valve cate
- g;j and the VCve bcdy, since there are different retals involved.
,. m y[4 ESS L Field Change 126 changed the cpernter =ctor en this valve free a 15 f'./lb to w a 25
- tilt : ter. The valve tcir vas also inculated by the Drescer fieli serrice d:d:
representative at this ti=e. Ww pf-L Vnen this syste- ( ES L) is heatei up ?.0-72 shculd ~oe eyeled cpen ani ele:ed ever/ SO'T increase in.he pressuri:er tc perature. Once the unit has reachal nc=si e@ operatin;. terperature the valve sh uld te openca and closed every hr2-for at least W four "--*
- o deter =ine if the larger ::ter vill centinue to cperate the valve. The
? valve sh:u'd then be cpened and Olesei s' cr approximately 2k hours at normal cperating M t e=perstur e. If creration it then satisfactory. r.ev sters (2:i ft/lh' vill te y reque:tei frc Drescer to replsce the ; resent 15 ft/lb notors en Units I and III. p If, t:vever, the Isrger =ctor is cet satisfactcry a todification to the solid gate vill te initiated by Dresser. +.t. ann Sfi In the interi while a f!nal resciuties is pending, the Unit I valve (which is ncv Qp clcsei) th:ul:1 he nude operable es;ecially for plant transients. In crder to acec p.ish gg.. this y=u ch: 11 ::Ge the follevin.; re :=ne:Iations to the custe cr. e-I'%
- 1) k're: the rea:ter is shutd:vn, cre: the valve by hand and set the creratcr to (dig N
c ore the vCve on position vice ::rpe. (Even though the valve veuldn't elese .T h c'f e::pletely, it vould preclude f r :-ing the 6".te into the ccat.1 i D h) i 2 The valve should then to tected te insure operability, i SM 7 l^ It is believed that with the o; crater set up in this canner the valve can be i Q. utilized if necessa y for plant transients, and vill serve as n'te=po arf resolution
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&g' me t M tw @ W MMMM 52iP % 54dMB@MiciMDM M Myh%5N @dNW W F%&M8Fd Ibfi c e n. awn 3m p $e$NNS&m c.ww&$U$5N?50$m$m&muay50$m?$$lg?%$5$?$e$,e.;wl& 4 aww NYU$ 5 b m& .p 1 b V b5kW mammmmmm amm m mma 2
,_..._;.. _ -. -,,.---,,- m - _.m,..-, -.- m-m-- - - .-.-~~ ~- g m r kj ..".N, hi ki V.o, il -- Pitt=an to Mccen:1 ell November 1, 1973 [,j a te the pretles. H '4ith the 25 ft/lb :stor Installed en 2 RC-72 e. torque switch settin,; of 2h I (c;en directicn) thatli n0t be exceeded wit.h0 t ru:ther coracultatio:a with D Dresser. ~~ + n. u RLP/cs i N. cc:.. P. It t r.e:- $.j R. V. Straub
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M & w ": '( " to jj o o V (DRESSER i 4 DREGSEf1 if4DUOTGIAL VALVE &. INSTRUMENT DIVistO!J ',",,'7"' l.'; %;y* yy g,a ni,, m.. D a c ts :3 8 H IN!'U STHets. In c, sasi r sa...c f ,3 s. n, inox i.au e A Lx Anom A. LomWH A 71301 y c (:. x r Novomber 1, L473 ( //. (m e y K i. F e r roes p ar .c gt v l i% j$ Mscros Dob Burnley' .s H To a Cound - e' .wZ Dabcock & Wilcox o ry. O P.O. inx 1250 !d n y Lynchburg, Va. 2tSC5 s n,, ,a V r; $Uf [ St;biec t : 7937 Gato Wiive, [ 'i Oconee Units 1,2 &3 c t 1 ( s' M centleraen G Y Realizing the mannor in which we have been trying-to s .n felt 4 expedito recolution of the Gate Vsive problets I that it was necessary that we entablich Dranser reco;n- 'c INndstions relative tc this project. These recocman-if d: tions have ore?viously been submitted to you over the telephcnc. f e 1. The Gite Valve necy should N co:pletely insol.atrd l up to thi. joint where the body ar.d yoke oro bo te '. 2. Althcugh calculations indie-ated a 15 ft.-lb. J operater vonld bc adecuate, it i t. felt '. ha t the .S ft.-lb. operator a heavier mer blow of 8 along wit.h the insul,* t. tan pre-v ioua ly r % crmn.ied } i S j'i rnay rerolve the proolom. j 4 ^ Should cither or both of the recorn:cen6atieno abcvc .tM 3. Y prove -to be inadequate, then the next suggested We have [i fix would be of a flexible vedge design. Ch sat up a prototype wedge and succencfully cut through the sections an regrired to make the wedge Q b' flexibic. The next step if required, would be to prepare new wedges with appropriate ITDT or attecpt 'l to cut existing wedgeu inctalled in the valvo during g e a, plant shutdewn. T -Continuod-f)-. 4 f.i ( 9tANCOCK V ALVES
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,, [, [ M ORL uGEf t ! ?t O U 's I H i L t.. 4NC s>. t1. WitM 9 4 3 0 ALEX ANDRI A. t Otil51 AN A 73 301 a T'h 00 Nove.v.ber 1, 1973 g N 4 Additionally, I think I nocd to cum narito ny portional r ovaluation of all this facts to int.us.' that wo are all y; properly working towards the same goala, ia 4 1. The Gato Valve on Oconea 41 in inoperativo at i this time. Il y ~ 2. Te=:ta conducted on econee el and #2 indicated that the valve oportted adequately up to 500*r. [ At that point, the wedge bec.'ne locked and the valvc could not be opened. Two rnotors wero subseqEr.tly burned out by shorting out the cotor thermal over load and the 11 nit cwitches 4 y g in an atterpt to open the valve. Although .j W calculationr indicate the notor to be adequato and becauso of the test resulta .3 have gained. it in theorize d that theren1 expansion is a tajor factor. Jj 3. In following our ouggestions, you have innulation j on Oconoo w2. Although we cannot presently con- } duct tests. In addition, uc have arranged this j i pas t veckend for cur fir. TicCarr.nck and a Linit Torqu2 Service Representativa alcng with the j i n c. W Reprozcatative to install a 25 it.-lb. i f cotor for temporary unage. Prenantly Dresser has ] haught the notor and is abnorbing other coat, howover, th's is being dono only in an efforc to expedite reuclution of the problem. Upon a field fix for the probicm, we can then negotiato coat, y etc. 1 j,l 4. Although we have purchased the operator end it is i currently installed, to ray knowledge this operator f is not adequate nince it in not provided with a hoater nor any of the spoeial scals required. ye O 3 il a j' 4 -continued- ,1 i 1 asncmort caucts amo swsint.we.rs. nar a vats rs. consoLiostro siarriv aar: attitr s s.ts as t p r.,. m 3-. p 4- . / MS"T w.--- p, q-hhf5-$fg.ff $ hk$k* b 5 Ehd 0 3s m + . w w,evin t.g:p+ g_ w m,'mg y,ggp.%gj m a .: g,,. z
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,m^q,--.,,..--.-,_____,. _i sq . ) /' n cd)* Q,;. !.(h { C M D o 4'/'^J m [Qsj w ww s, ~ f.) b' d% THE DABCOCK & Wit.COX CCHPANY v yj g% 6 Q g. ER GENERATION GROUP / Mg eu l U L,1.. 2., jQ i p FILE /M.; je i ( . mmh frce r9.% L. R. ALLEN, ASSOCLV'E PROJECT liv;AGER r.XT. 2310 nos so.3
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Cust. 'F Ic No. 'gy@:N 8I* EA30.41 Dresser p.JKE POWER CC:!PA:rt ,; w s v Date 7 p p-& S u bj. Q;3;3l DRESSER ELECTRO}'ATIC RELIEF VALVE MEET 1' 0 MINUTES 10-11-73
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.. w a sjet h'ff0% A tecting was held at Ocence on October 10, 197J, to discuss AEC's concerna ,c mq$ Rj on the subject valve. c0 i s.mn o .QF# Attendces 1 G%tir 4 M'M DUKE POWER AFC DRESSER _ E&W Wd$ g@Q L. R. D aubon C. E. M:.:rphy T. R. Bordelon E. L. Logan { Q %@f - L. R. Barnes V. D. Kallwy Y. S. Lai L. R. Allen ck(h A. R. Hollins 'd. C. Eutt hN,hlh g T. F. Vyke 4 b7; D. C. Gardner .Ygm ;L .W J. W. Hampton U?[T T. L. Cotton D, ~.#N R. E. Dickens -a TQgW D. L. Free:c $h E n:t The following su--arizes discussions which took place during this meeting: ?; f-e e , M. m-w , p.L M Murphy: I talked to Vashingten last week and asked that' they accept the latest ~ ?7 j stress analysis which included cyclic analysis hevever they m uld not accept the veld joint. Therefore, this nceting was required. 7 J2.;-v< g;; q 4 , f6, * ' Vyke: Ve ha < e had H. Thicisch preparc a report on this valve which addresses Wk this '.wid joint. Flcase, at this tino, review this draf t report and % jy detc due whether it ansvers your concerns on this veld joint. (Draft @W of r port attached) e '.s, s. gQK Kelley: Reference page 4, paragraph 1. Solid vedge valve in service such as n Q$ this block valve could cause prob 1 cms. Friction factor extremely high [Apq$. for solid ved e valves, lh concerned with operator's c.bility to close t Qp valve with extremely high flow through va'.ve.- ,, %z] The operator was sized to close & open the valvo against full 2500 Bordelon: ,f y 5 pis differential pressure. _ * :Y,;p p,f4g N f_J,. gg g '.M M ,N,%x '. -b_ - ' " fg :.y ,, Q. *
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-,. m.n.- -.,- ~..- m~ c~-~ n ~m ~~ ~ v-m -~~1may 9 My ) 3 ; .4 C[ n. M M[ - - - - * ~. -' rAf ?ElW 1L W biley: Questicesi fit up of top 'and botton pieaes prior to velding. Looked at MM drawings a:.3 velding procedures. Questioned the definition of " scal 3;[TM Pass" i.e.. vith or without filler cetal. (It was pointed out that the d asse-b'y drawing specifies veld rod for the seal pass). In spite of what Y% the drrei:.g specifics, f.e vould guess that seal pass was fused dthout @%ys L filler :seul. Also expressed cot.cern over size of the recaining passes and the but input. Stated that this type veld, unlike a butt veld, since Q@ it is letthd out prior to velding does net allev for vcid shrinkage. Q Sir.ce bas + :.aterial attength properties were t; sed h the stress analysis 79 & it caf t te proven that cracking did not cecur in the heat effected h rene, the stress cnalysis is not adequate, Stated enat shop radiograph h was naa 1=::less f rom the standpoint of locations the type cracks with which %fM he is sec ta2:ed. Stated that if Dresser ceuld shew that heat input during MG veldles is sufficiently low such that cracking would not occur during cool-5%j down tzere w ald be no probles or if there vare se e way to EDT veld and NW heat affected zone to prove that cracks did not exist then previously sub-f2,@ be nitted stress analysis vculd be acceptable.
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Basis cf cra concern is haat input & scid pass size. If heat input is not M? "high" xmi veld pass size is not " heavy" then this valve design should be [Np ok. Q &j M Allen: Could Yes tantify "high" & " heavy"? mw gg h11ey: Not really. Eadinped that the veld procedure vould have been ecte W g(f.kh specific. Meeting the code from a veld procedure 'standpaint is really h not en.m;h. You could do an engineering analysis which includes cracks and sh:vs that there is no problem if they exist. Radiograph vill L-d most liit'y =ct shew type of cracks which concern me. We could not g? find this type crack on Hatch vessel with radiograph. 9pj WP Murphy: Vc have ide=tified yesiona which need to be addressed. We vill review any a m'ysis which is subsitted. W2 w R Kelley: You =ay va:t to submit a weld cock up. [$ d] Bordelca: If I mie a =ock up and it shoved no cracks, would that be an acceptable ydj y answer. O Kslicy: It vor.ld le a bet 'er position. The simplest out votild be to find a way IM l to hTT this joint 3ad show no cracks exist, then ye:r stress analysis is gQ ek. I u:cld think a mock uy and destructive testing would put you on very W fim g.. ai. Cracks can exist so long as the stress analysis backs up g$4 that the crack vill not grov. Also, Duke cust submit docunentation to j show that isolation valve vill close under :nost adverse operating condition. 4 I if";, Lai: If we ass:cr= 1/4*' crack exists and vill not grow over design life, is h that acec; table? W W O h= y;y @M i bh c.1 .,.,---,*W1.-~ q y,J q, se ~~ ;, un % ? : W* " ' b - % '.;k:W~!hhh.Q hY $ S Y "' h Y - ' ?'Y $YY O ?
-- m n y, i hhY,. 7.~ .m., .m.s., - e.- @ $5,j( d E E M,h i1EIl $ d N,s$ y~E N,,i[m q.,. w m y. yb "' .m NSMIN$in I
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y av. 4.. - .m.p. C f.r:F SF g Ac q):!L ';4 N M4. 9 -Pare 3 . c.3 y e ?. i:+ ;:v i f y.w r 3..r;j q~ qlQGy g>yke: Would like to sut=it Thielsch's report for evaluation. hS by a@Q [c-W? Kelley: We vill forward any analysis or report for evaluation. In Su=ary: Weld [.; joint and velding process should be addressed. Also the stress analysis y.- M. should take into account cracking which could occur in the heat:.ffected m ryTr,;ts zone during soliditistion. Keep in eind that you nay have 4 valves with f~.8., M. N no cracks an3 the 5th one may have cracks. w.+ s; 4 M-Ml (Q::.c, .m, Duke contacted 11. Thielsch by telephone. Wyke gg At this point the meeting brcke up. e ":/ and Thicisch had a p-ivate conversation at the end cf which Wyke stated that Duke vanted d;}p Dresser to :nake a t:ock up and send it to Thielsch for evaluation and analysis. Bordelon ty% cErced but said he would need to cicar it with his canagement. At this point Duke, BT.W. Y. and Dresser talked to Thicisch relative to how the cock up should be made. The cock up P'9;:;)f< should be cade as follows: dg. ?ffa;h $'.+.u, e, y I Q 6<: 3, t im' 1. Should be cylir.drical Vl i W:M[ 2. Cace caterial as an valve (vill need physicals and chemicals) r,-lUQ p/g; ag. g 3. Sa=e velding procedures, cenditiens and post veld heat treatment k$sq N$s ry Thielsch stated that he could submit his report to Duke within 3 days of receipt of the g
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%G, {>p p:.T fJO. (l 4).3 D!tA Pr_ g m FN s 8 0 f G f'73 g g., Rcu 6,mJ Af#D N}g':: bd ACK #C 8J H.fs<c "cH g -e ,c N w:.aJ WC. $54.1 .;l:fr 'e i, M,s.E,. %,M' G 77trRODUCT UN e,0 M3 ,f s gy. >s %w N,4 yr; vs O ) In Units 1, 2 and 3 one Dressor pilot--oporated electro- @-~. v !q ratic roliof valvo No. InV-G7 (nC-.66) onch was installed. One C' enn additional roliof valvo of the sue type had boon pu chased as >9 qm a sparo. f4j .g. ,m Photographs of the sparo m11ef valve are shown in Figs. G ru,,. 1 and 'J. w n a, Tho valvo is a 26" ciao. ne gaseous waste disposal pip-g Mt? d ing systens (57), in which the th.7c valves are installed, aro i W Class C piping syntoms. They are subject to the following scr- [dh e< vice conditions - 2500 psi and 670*P. The caxi=um operating $} RS prossure is 2155 psi. Tho valves aro nor= ally subjoct to a }}j 67, n systen pressure of 2155 psi from the pressurizer tanks. 33] O) E4 q y
- 5c; h..n 9
s Ty b;p*} fy[.S -r L kh
1 w :. m s m :., p r z. m 3 2 3 f e,.z z g y g g g3 % y ; q q g g g y *, % p m p. m m wm e xGS
- ~.
%F ' Qf.c dlRL ~2-s$ WS e Mh M g dX,wpn pQMM ~. Vp 2 ; The valve she21n wore tested by the canuf acturer at 9000 MN 'g s
- rj r
psi; for threo ninutos. The valvo seats vere stabsequently 5%,3 testcd at 0 psig for.th e minutos. P th PQey x.9 After oroctics, the piping systons in which the velves aro gg es.e it.stsIlod are tested hydrostatically at a pressure of 3125 psi. MM k Nl'- MQ$. N Horwer, since this vhAva was preset to open, it vac isolated 9 '.dd. : 1 7yj @%@ i by isolation valve RC-4. %m%w% u.% The docu;santation applicable to onch valve, and identified m .: r.- k FA[*M ,J - ~ try tis Units (1, 2 or 3) in which they are installed, are in-
- 3.r. m j.. e o.-.
$ @ t @:.p.% :d cic:1 d in Appendices A to D. 3J g WM. $M;. & W",1 trs1d Anr.eubly. (%.7,3 ,; ;.. a. L, M ;-h, M N ,g
- 3....--
-m 088 E 'Ita valves aro asocnbled by..wcIding p cviously s.*chinod [ ,-< dytv ? ;,.4 ,ei r.~ Ty;= 504 ctainloss stecl;co rpencnts., .7 +.. ~ 7 '.I ~., ( [ gw[m.a@M d i.. - s.. ~ . - On6 of th6f welds fin '.._.&.. Qf07;) hnd5
- .., 'Tho wold-nasccbly ic clic2n in F2g. 3 ~.
4 s: p..r n identified..by $W, I 9' ~ ' , - yolved re.prosents a circunferential" butt type volti . t.he letter. "A?.' betveon the flango and Icwor baco sections.. WW .'64 i.4 p.M EFE3 It' .s rN;;a.4 u co.o-s, - represents a 'hlceve-typo" of' butt Joint where one couber' also DN n.C'.N.! I', s. w.9,:i, D., _ s -: %m e @MM!. lga;2 5 Gorves as a tveh-up for the -cther schor. ..-..u ., x ,!. *4..m.G 2T. he flanged center of the body is. generally seated tightly A,. M. w' i u. g ve,~. ngs. inst the lower base cember as detailed in Fig. 4.. Since this - % @x y $q 1.<;I ~ M cs p: N s. represents a " socket-typo" ~of voild.'.1oint, the tight.s'oaiing can - h.N q%%% M.Q
- t. -
be subject to quentioning sinco Soction' ANSI IO1.7:shcus in Fi*. N 5 I C-% n.s p.t-
- -<. m.,
y5s [$w, ;%;M,. - 727.4.4(c) a gap in the root of socket Jcints of approxin:toly j c. w -.4.'., i -1/16", Fig. 5. Similar requimeents-arc shorn in other piping N*ik. ' '..#w-2 m p.%, nnd pressuro vossol codco. Thoso, however, generally refer to M9 F C' W 4-{#W ip g. ,,, +. %,cdl%y% e ;.-a.; p.& p~,. I n.ly ~ ~. m .~;,., ~ $, A+;j w ',*, i tm.y n W '"-**"*-**C--2
- __~
.,,_.g_ ,,m._ /==.'1..:n. 2 a.
. w.- A nw.u.m,a w onw,w-m,m. m we,m. ea .. :.q. m. .s. @a e'Fn N-O L pW g' n.;c? '.J,. n t 2 ua,., wh;[ h' fillot type of sockot velds norraally imolving one light wall o n,.- MW soonber such nu a small diamotor pipe (usually 2 }" or smallor m" d. 4'.,1 fillet-type of dM% co=inal outside dinceter). In thono socket A L.myg veld joints, illustrated in Fig. 5,.the pipe nonbor may boat Q;u.fR n. 7m % c- +,up coro rapidly and: thus expand to n-so=eyhnt g'rontor extent p g. ~. r ~. r. ..~.m mn ....ttinn.,.J.the cdjacent.honvi_e. r._.m._a. s..s o.f.,_ba.s_o noial whenover hot gas Y. n.c.h. s.
- 2. >:.
- 4..
s % Q,- .,..or.ctonc. flows suddouly; through tho. pipe.. Frequent. tcupera- ~. A. s. . 2!: ??:i-- h.. - m -.::,.... * ^ : Cec.. '. N..: : Myx .~. ..e-; L. ^ 6-6turce.cyc11ng may lin:d1=s result".in. cracking. across.the I111ot., WW d:n, s..h...p6 : .L,.... c..- .t m..;. ~:. .,.:. m.t;. - .,. m >-. s.A.v.. s s
- y. a.-
.y
- M.G..2kt
.. n,,....~ veld. ...:,, m q.. p.~.a..... n.e.m v., s.n.:1. c '.w'.;:.. ;:x.A.-r:. mw:A 5.. m. y +"aM...: 2 rX. Sw%> v r tt: a :y:~ %. ?. .. - ~... m ?..: A)Lh! ,7.- v7... - v. Q; , ~..
- +
c; 2.s ~v. .a ..%Tho.-cuaceptability '.to;. cracking. depends upon i'actorsf.such. ; '. {$f b w e%W.i- % : &.h:;_. g l:..,lh.& - M: * '.. ::2ll-I % !.?2 C':v.:- : :u WM.P@Q.Q'L *lA asoto :perature. shoch, <tha' number.of to:aporaturo cycles,ff,Qif h .prin- . e. .w.. :... g.w.~:e..:... &.w RM. y; .bw 1.@ar* >,w Sw.:y... we.; c...,--:s!....wi : 2.. s? y. c. ~....w,: ,.3 .. ~ ..... - - ^ v-r,.,,, .s .t .e Q'. A3 ;.9:.
- 'ci- :
cipally..the1bacting;: cycles;Jth.c'. longth of':thc. leg 'tr21'0sJthe.fl2e: l % w$ m;;%, m.D e p.Os. "v* w,. 7. s: n. f111t n t. rco M,,t bn.n tsw o f -th o f i1..-n - <. m-~ 1... .,-u,.. m .: u. s ... > m. m.t:..~>.+.-.-.>t'. e =. - n u-v-r-~ - -;. an p...
- .-w L :,g.a,,+..t ne cato r 2n n. u tc.,..x....:.4-eQg' y.:.y'%..
- c..
m t.w o u c ...g
- r:.
y. 3 (, s. e~ ~.up 5.. ./ *. w u s, .. ~. .a ..e pC l:i:; ::).. - cf ;i llThe cochot-type fleg. on the Dracc.er pronoure3rt lief. palvo i WM .. + r.... v. ....,., i ~ < - ..t D'. l < MM pMfl.? - t. p.own+ nt: "D'Qin 11:;. f, T.orcndir. lupon nachining,,Jmy ~vs.n f.,.j, ry e~. ....,7,s... 3 .1. . - e. m,., ~? r.~ ,1...c. p.. n,... 7fron,nearlyl.0." to 'asprox1=ntoIy-7 /8"..... It, vill:.probably~ aver.1 ' &, @ Q, m. ...:. s. m.> ~ j. y;
- c.. v 2::m,;~.
--; -.,.;.., w:x ';. :, u.. ~, -.. p.. -... -- :. t. a: : n> c -...< i -4 .,.,.,,,.r,7.g 1. _-.,-,. O.. :a.m.. t/1G ".q?d.Jehbs., f T.03 ".cass. o f.ne tal h.velv,i;n,g th<i. II:ng
- i. ! M,... o.c.,' + :.C.,.
t c. o. a.
- a.. +
.51/it M...1'1[.u'oK,in ' "Did tud:^=d:::M..,,.tir:: m d.W cvyt( L. :r.aahu n.hi: . 'j;.. pn:.-;.7.,a. y,?..u.. a. .3......:.. a. .. p, p 6 r_.a,v;e n.. n:a ...)Lohtind'.or-thEst.il fatiguo X'even If,' cut.fect, -n ~..... G WQO N. :.subjectJ t'o ea m... 3.....<< . u.;,..p.r., c ...v. m. a,, ..~ ..,.*.~:....-
- r@x
- =;..:. w.,-.,
-, -%7.'- #.'.40 80Voroc.tseparatufo.i.;cyc1 Tot.:4 ai tha.' larco;,otalh:am. L.. ...m.{idelud-i p ~ u - ~ s..+. m o -,v..- ' f.6d exs';-l:.,.-h~-.&.. f.,tbo casa vilroqEaliza thohtal t>::Q.; ' - y.. :. ',.o : 7.c ;m.: g.x:[ ;. 7.;;....;.-+. f.& p n.+. d V.M : L~. ira turor l'n'. t'.E.:flanic :. ?;f.Y:J..l& V int,.... ,c. 2&sM l ~ .. a ;. a. ~ ;.. - z.pw.. e:... ..c ..t ..:.,....c.. g . u, :., .. y.:.- .c ...h....:.... 1 ndf; e.n.:~+~.,..;:,,::yWnnd -lo,ver'. bano~.. :.. nsectionn: at tho:.wc,1d 11ocation. N 4w , a..c..:. c. -:.,...........~.s.. - - -..,. a ?p~. 7,;/ h.it..cf nt.."C";nndT, $ $,../3. t.'.nyo.r.at;c,cockot ' lo. ngth.. n. G..".B." thun.wi. l1 ~ .~ ~ .* w.n ho.1 p K.,g%Ja 't.' ..?s; :,. a.+...O. . * '. :.. ;., e L... c. .t G........ y:... &.. ' - *=. i's $ *f,%w.be r of h?*: u4 w.W/ .:.no signif..icanco..... 1.:.s '...: i..W....i. *,.. ' g T,.J: 7.,. - e. 9..., + ..e, .m ,... Q e;q v qw!! -:..,...y l'orcovor, this, valvo r ftmetionin;: as. a prest;ur:. re11ers bb, 3g >5 n, p# 1 -g .i. qA .., ;. c cQ l <Tur. r t valve; vill not ovon re subj :ct. to fr. quent actuatio t. g.g =-- - =: m p%m.- s..vcg..r.- .,9..... 4 %,,; ~ m n jftl% r e.q,. - (,*. * ;,.. 4..' '..~
- T. I.
- - f, '
..i'. # 8.h 2.* ... - *. x c,'. .. -.4 .X: . 4 '- ,t; Ig J, ., : N. v ~ ..i.,. ....i. 4 W ..i.. .... + ? p,q a
- *f ',,.
fgg ,, ?>[,1, .4- ... s.. .e...., s. n..,. ,4 t... k. .. A 4. s. : r 2*..... Jn.1 ;..'. 3 11;,/. 6, te 7.;, J:..jf.W , Q 1;.c.,,. : L, L ;,, ;., ,, b,,4, y.3
w ;.t.re.m sw w w.=-,~=MICFt5::CCytM % - e.e. m v.m m ,.w w= cmm: g .,s 4 E f. N.de y- ) w g. a o t g. r. a Q W .# V m. 0 %q.y-this valvo can be readily isolated by the, ghd.'*.L
- , #,['
, rurthernore, } jik d d y a 'y[ " isolation valves located between the prescura relief valvon i .. hW'I G th h y .a. .:;l a.., - f q', g.nd the pret,surizer tuuhs.1 _M~ -.- ' ~ v. ICW t h _.4 .. J ^ 0 24w-- -- ~ 77
- ghj Q The extonnivo. c::perienco sith valvo and cc:ponent 'failurca.
s
- a...
f pr.,'4, orts _the',. f ~in fonull-fueli nucIcar -and chenical pinnts, also supp&. :=i-A "~ --- f .A s. E..y*. -.,. L. 2..
- o.Q.
j M. - ' conclusions that the specific trold 1odst' dosi;;n applicable te'.,, - - d, ..-.. thin Drescer valvo in the cparating conditions involved i.'chould 9 p v. -.:'.'x ; i ' - 1- . ~ .T.-.C='.. . :.. ).;; 2 3 I lt in failure. ..a. -. 4., %'. '...v.. G, ...nct.T.c5U - t J .c, .,. ~ - ~,. .3., 1 ~ - v- -The entircIf; antinfactorr service of' thin"particuinr l ~ ' Y,. -:T; a.. j 7 ..? ,, G: - D. . Drosner design has als,o teen, conf 1rned by.the entirely.v. satis y. J
- *. a e f *,,2..*..
.*s ....,.,.*?c-. .-... m. g. .,,g,, 4s8 g,J. .ge, - --+, - factory, ocrvico of. '..'99 val es from1102 forgings ope's.. rating. in?, ~ae. '. E u ~. ?. O.b -.x -: . -- %-;,. -Q . :.. 'q.: .' I comsme.s' t .7 ~R a, , ? MM ' S M .1-- - - 1 plants. at' ;.9essures an.,hihh' s CO', pai and.. [,',,, p ' f'f i : $,.. n, '.w.. h 16 *i. ': _- /. .. :. f-g e.. b. 4 ^ 1 ry..J... ' -. , w.:.s . r; p.:;.. . M..rF
- *
- st -
- - tsmm vnrvrnn ssn. n wa nu, suaa. e. 2 n. nuu rt. ion ......or. t uono.. : -. p +. g. -,_. a.: 1.a ....:.~.. . ~...,....- ,. + 1 .' f u.... ... g. : f ~ -, .J. _ 9 .valven to dato Anec. boca insta1101;in nuc1cer(p=rm plantc.., :.;. ..F... ~...-.... .ur:.:.. - 4 . n, r.,. u..,.a 3 ... r tven when a nochet.rdId of r. ore canv nticnal lon::. socket"._ s ~ s,. a . '... '..' Ice; deni: n has failed bocitse of'tigd bott en" positicaing,. J. L. ,- [<
- a-.
.,s.,... n 3,,..~. .y .a ...t.ho,. occasional i. iluro.encothtored in. icusil. fuel "cuer; 2ninnts. '.... i c .:..-Q s, s.-= ln - ; ~ L.., .y .. L. c . ~ ~ - ., e. .,...'4.. . cr. chenica,. P,iantc hava al=est alecys occurred as ' localice.d.;....~,:.. ~ .a. - ~ ,g - cracking over part of ~ thu joint circu=ference rather.than in.- E ~ ....: n. u. - ~; -a
- L..,...
- _'.. v.olvi ng a comple t e. nyn t o m : ". ' '... '.', '. '- -"..,; ~ _ ~ -J.. _. f; J..%..,..., g..-,,5.. Q r ,',.3...;.... -...- ~. ~ 2. s .......~.t...,.....m.........-s... .,,,,...<..w,....._. e m.. .1. 1,.-- - -- r;. -llad3otraphic P-n.? nation ,..w c., a.,,.. - -~*-s.,m j
- u. c 3
.Q J 3.:...c. 3. c...... c s.'.,..,. -.s... 4 .... To vurify that the " codified socket" was loss. th.an 1/S";... .:l.a ' f. ""4... C 6 1 ,a... q ,X. ' the. valvo ::ss radicgraphe-i by' nulti. ple exposures ns detaile.d... 4 ,.n .n. f ,.. ~., <..]in ~ the shooting shotch shc.rn in F4. G'. ' Prints of the neforal . ? + (, y-l. a 4. -exposurs nid shown :in Figs. 7 to. 9'.. They-indicate that'tho' O .g. d esp ~ .s- [ a*,*.,, -~ f,
- l Tp.
f4. :. :.:r
- s. ? ',,,.
.. ' *.2. :.. - . : -[. ; M.. .t,.. y .s* .s,
- a. "
11 ? 2 + - h,#. g.' ,,s. i f. g, '.,-.r_.., i' h ...t.*.,.., -.....
- C..*.*.(,.<..
?. ... _ _. - ~. - ,g.
T
- ""w
,, wa -r + ess - m q, ,,.,,,S ,,~,g. _,,,._m,,.,, r ~5~ .&..myr,3 - -gye p ww.y. 'u.f .1 Y V.:ra s F. &j , g.,A-m s~ we i ..T :.m . s.4 1 -vJ I wwp . %wa.,s.,t.ZM C .. w n CONC!.ESIGNS ~ @pa@y.w@
- w. t 9 On the basis of the following critoria, the 2500 lb.
- ..m$.f'.n
.~g.,g. yws msr.t. class Dmuser Caesolidated Electre=atic Pnssure Eolief W;;2'eig %masw Q Valves typo 2{-31533VX-30(25).smI-US1TA, as c.ota11ed ou e x..$... ; .~ Drutser Dray 1=gs Xe. CP-1549 and 4184G3 nm considered ac-m,2; @ h,' p,d..,; p .a ve copta blo. J,'y.g ygnc r (1) Tho v311 tbichnosces shown in Appendix E Qyy -^',p" @ag@p~QQ .<.m .g 'and 'ovaluations confirs co=plir.nce'with . m.-;a 3 D,.... $... ~4 s#. .the a quirecouts of Section,IIII 1971 .r .w .2.,._.4 .. g ~-,y :.,g,, g g! ..7 , + - - odition of tho ISE Doller and Pressure - gMH e yt.%.S.,; A . b. gn 4 e .7 t '*h' 3 M,h. N, rj.,h.* $,. c A " 'd.*b. Q l
- /' *; W Q *[.I *7 ~.'* ' E. * } # 4"; g I.* *
- =
4._*..id...'..'.,.2=. f, ., y .V 4 g .,, 3(2) :The nochet; typo-wold" joint with n'sochot- . 7 ^ '. J Q$b M r@w& ... ~...w. w w w - -.... +. ~ z c. . :~.,. +. - , o e,, a .a
- s...
- m. g..
~, - - o --s .m .a u w a w a-. w 5.@A:n e s y9 T. y. .... w..f f.--.,, - Jact. to-significant locali=od ntrocs spe yh .. e..
- e..
.n.. .~ @u,,.. y,'h. .lovols own undar the nost severe con-- ^ ' .'.' "' ] O *. ' we. g% s-hey ditions of ther=21-cycling to yhich. this ,.s. Mrg'S M. A.; /Mpa* v .: :........ +S. ' ~. .-.- :.a.. W e ..,.. s w as .. ~..a.. -. vr.1v.o, night be subjocted. w.a,.g>,g.,w ,- ~ '. ...n. o:... ,gg. . m..~.v._.. _ (. 7,_ a (3). Tho valm, and veld assenbly-coaditf ons WM... s
- a -
..m a.- - m%" ...n :... (p&y.h+.? .v - nG dotailod.on Drcnsur.Skctch 1:a. 41*MS3, 5 mr .u' '.. '~~ @m y n t sN '..s ..... h'avo '.tcon verified by supplocantary' final ~. n. 4r p. m ;.3
- s..
..... -... _...m........ e . jj'_. pg Erndiogr phy. _ [.:.; '. ~ .. ~. -., -
- @$gg-c:./3 q(4),Tho acceptability of.the flange and Ic-se'r.
" l'%.... ",,... 4 %g % y ,q.. .e ..s.., -body catorials have boon confir=ed b,y-. -...:, ~. GM4 sy W, w
- .. Dressor responsible for the. verifi.c.at.i.on. ~.
- ..:....l....
- m..;yv4 of the supplicr's mill test certificates M M. w5 m.q:@d m._
4 6. and ultrasonic and liquid penetrant inspec-
- .@t p~
l me.A@i ,a .c 7;+pJ.%.y$.M tion reports. f.t;. s .?.*; -. -- ,#Q %g,e,.e?bpt.w .1 ', - !/;, 6-
- c ;
2 4*. *:......,:- . 5... : ,..3 ...g.
- y-p.
a. .s... 4 p %.g s. gi ,4 .s.,-..,,.#mp.... ,.,..,.9 .n s... f., ,,,.g_ w..;O..,.1 m. r. a.. r..~ su g f
- d e ~
due ..w.- ....eseq.. A a, x.p.W-5 %m % \\ Li~ M 2 *Q M L M X Q W M k Fi?d.CV. K. n-nl W G+Q &w_..m,=9%,.*~. w.W R &~.qt: 2 WW A 2 w s - a w -a a-.
-.~ - -,.:.y.. rr mg.r,p. w.g my m wwmm I ffh Y$r- = a e.a % w: s r. n-ff P. s E M k gr,$; r MG 2DNA M %. %j@ q f w, M @A .f %. (5) The souminess of 'the weld nasombled fhnged y.%..%g.j % ~ lJdWAM% ggh %ggdp.g,f p. -body vas further confirmed by-Dresser Indus-u qw cr.N.9n m m.% hnephd +. 4 n -x %i ?
- m. ".. t.rie. s -by a.bydrostatic pressuro test' of tho--
'-<?- .... w- ~,,;. p: &qpyg gm:Q.gi.:q 3,.,.1.. >...'."chell"M-nformd nt a prosaure, of 9000, ps .. e 77;,6. ~;f.,.. <,._.g...~.. m a pt:mwWwq. . < ~., + - v.. e. .. n
- .c. :<;;
qw,M,N QQ 0':.forJIf.nin., which. involves. ::: orc than throo h,by k y. o. u....... -. ...f b**!U -tha* gbtimi. .x ,J[h (([',{Jh
- b'y vorhinj;Ipressur0.
test reuultn. nnd,cci-w;,., _,.... ;;-f;.:.Q@Wsj.gNM. 1.:......v:.,'^7.7/.4 M d'.y .L'@ M Z d
- f,.
- 4. O % 9.t,j.
,. f.
- ". Wt'(G) -Vorification of-thesa J.
g ;M y.W 1 .. u.. 2_..m_. .c.. ...w ..c...s .m .. % u. ., u,..q. a : s...,. p,.,..<...o J.'.2. ;J, r. 'M.. L,. :.'phn ca) vith; tha..Go et.ic. n. I M ; rc,qu trpwhts p f,.... ;.J i. ; d..... l.-.. W@p'M.y.pipPW
- p. Augs rg m e
. < ~ m,.. u.- .? .~.. :. c..v..~.... .m . e ..n ..A>.: Yocsol[Co'c van'".. C..p %. :,.,....,.i.M-4 @gw@w) wygf4M E M F.M-MCQ. Od.b'oJASHE;iksiNE E..ni 5. resm:rc ~ _ e. -.,3. :. ~.. t.:w : ..p+ g,. .. e.. : m~ Qv ~ %a q ~ ... i. ?,.-?.e.s...m..~-,.-~....? .;. u. w. c ,c ...y.... .....t...,s m.. 9 .V
- _7 ;.d;.,,a. G.m &. m.. --9..q fq ygRgt
%.q.% g,:.:alono: b7. Inbmc'd rid. 11caQCor.pa.ny.*., . wagc .x:e =;:..u.,~ +... c.s..m..m.,g gggg$tgr. w ;q .. : e.,a _..m.._.g : y.v;; ;.:. ~..s~_. _.,.~c.,;:;... u..;,.. ., m m. .4pM-p)g Confirmtier.. rf;Dressor thatwold~~ failuresng....g;il;.;,;;;;. ..: < c:;; 3.r;.=, 1 w 7:. - wpAy.v. M. N. y. n. v i... -~ ~..g.y m... :loctronatlic.T. res.. ;.,'>,7. e.:MN...-Q:.S,,h-AMM[,., MC.p havo.; S..E.. oce.stro.d..'.'in 'tifaj .? v 4. 5. d..1 @,...,, O..., w... ). 9,.. h * % s'5.'f. nncan coo r f z;ea.=T '*"i" g.G,.i*t, Q.."",'- -T *3- ..:.. A + a3..c.?.?. &,..,.% - ........ ~. '. ' *
- .. e.
w v. . n..V. r. ~. s + m i. h.... . i. &p my ~..y-n. w :suro. P.a.- .. w-.n s _ - :...-Wy. m.:Q;* s. n w or. nu t, y gd. n $i$/,',f cochet" sold Joint; desi;;n n".:d,tip't.;nonting,....- gc.3. C..,.. yyQQ&g ^ .: N t
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/ a p ..z @a ;' m.4 GQ. Mws -e.y:- yr: . :w.uw hMhh. Attached is cee ecpy of Site Proble:s Repor: **o. YC which was r.ruessed -a s, o e-on Contract 12MO C3 Future centra-ts have been revieve t fer the syQy@ei.W ~., -.Mii d..sQ,MN; potential cf,a similar probles. This probles is/is not censidered applicable 'to other cent acts 9f 79 O., s.
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e -e.=., F%Ij[j9 ST.TE PRr0LEH REP T BACCCCK !. EILCOX fr%W T,gg CUSTC::E[Dne Fower cremy CONTRACT !.3.ry_~ y SFR NO. a 9 REV.P d., YEN 00R P.O. NO. TASK N0. A 7 C500P NO. v/ SEG.NG. o L $M:% SlT[ [uGild[g REQ' O. hESOL. D AT E hEG'D CTJP. DAf E h ~.. L. Imsn "s - 2 Q.w y TITL( hvf9.M: RC. (RC '!2) 140TCR BUR';Or # 2 JDK$ F*ip/sp)fg QS M DESCRIPTION OF PROBLEM gs P SL:e as reported on Revicien C- @tg$[{h' On 10-9-73 cctor was again turned o1.. ten ar* atte pt was ende M DY to open the valve with t!.c overloads 1;rpacred. h$sh
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STATUS - ACTION 10 DATE lhCLUDING PtRSONS CC:iTACTED Q M?$. MD6h SM.Wi; skwg) Magp$ Q,@%.m dr$l FURTHER ACTION RECC:StENDID BY SITE PERSONNEL 8 5.e g,45 iLYr.:bIf[k h ;.; Sane as recc-ended on Re risien O. suy f dc.w%:: m; a;w; b?b! >*l MWl%' r Wi
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COST CATEGGRY O NORM OC OD OG OL O VEN;0R CLAin g,p AUTH. CHARGE NO. lOFIELDCHANGEREQ l .t; NO. L~.M. g.gyd u nm SII!. C0"PLET ICN REPORT A/sv */'"lo*
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P.O. NO. 175X MO. P;0UP FO. SEU.ND. %$h SITE ENGINEER RE Q' O.llE SQL. D AT L htQ' u, C7. DATE l; Mgg3 E. L. logan 5MJN TITLE Ii b gV RC l* (RC-V2) !OT0!1 BUF'iOf rt I ~ FP
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DESCRIPTiflN OF PROE'*E4 ?!;Qy On 10-5-73 PC 4 c,verl.;nl.2 har. lee,eter-rtiden c.t'A.E.C.' h'4%b; jb ' direction. Durir.g dropped red in' ident (Cee f;FR SM, retacte cp-ator attertpted s,
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replaced cr. tt 7/73. h1ve ir, now in rervici I~ 4.-tQ' / nct uator motc,r. valve net uator v > $ M../,2 vith overicals still bypensed. .l* %....Q 3 a yr,4 cu v* is 3
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STATUS ACTION TO DATE INCLUDINC LERSONS CONTACTED OME ,c. y_g ~ t - a 4,b m,..c a 2 m. 1 a.T*1 _FURTHER ACil0N RECOMENCEO BT SITE PERSDEHEL '* # f-Wh:j A Esysg. Spean WM*"M. <~MJ s'"! M'W '" "" ..$h gosewau.1 tM ea.- ntti Wr?rDM N l5M"' W A'W~ # =WU u<wn Aun th ' h un"'" "'*- " "' \\ "'"' " "'" * *" ~ k?A. $s, g7,r,weirarr*H.- /M*rr. 4tRoET d*M'- 1, m w :,u p pe n u _...l 4,rn e senatuu l oart v./ -. - r- /.0_/ ,a c'y +e a/J. s m 7/=E o nb,c2 mag _ n n-a-13. y _ .y e W&ss,_ u)J ag 9j X.~ q, $ y p g i %.. RESCLUTION c %, $ o. f. %,%,f,,;;9 - im p NIO APPROVED BY SICN AidRE DATE i 'weg O.M f N.S. S'IPPORT ENGINEER jdIR [ TASK ENGlHEER r.m. w; ~ a ,e: nn ,J w 4 85 w ,y m 3 1 N~. o,7{ PROJECT MANAGER 1 D.x iM - COST CATEGO'lY O NORh OC D OO OL O VEH00R CLAIN, ; Ld.d.q SITE C0'JPLET10N 'lEPORT j AUTH. CHARGE H0. O FIE.11 CMGE REO l Fr. NO. g)A1 e g REC 00EA0!D a n;,1 STUS. CHANGE -- F pA M.b I FINAL DISTi @ ltre l i w~ M7p PRhECT *.' LAGER _ "i j DEVI Ail 0iiS O NONE O_SEE SPR REY. NO. s.o v./amv.c. ^~ .OI ~ DATE COMPLETED lSICNEOBy CA DOC. OLE n8 CDiT. Exn I . o' G s.o.tl./CONSTR. REP. APPROVAL DAT:. nt o.m.2 g. dd.1 . : o_ d, f r u g,.;,.. ^ v; -1
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T IE ' BABCOCK & itLCOX COMPAllY O i POWER GEf3ERATIGis GROUP h,h To l H. R. It<ach ~ }y fg< h F rora yf t Ts. J. McCent. -11 / E. L. Iwd. ses u3 5 i I Cust. o File No. O L:v?.e Pcue *- 0( R*I- ^*'~ Ii j Subj. Another cha;_ter in the.ecntinuinc; CAGA or: Date ~ p FC-V? (lic-y ELECTRC '/ TIC ICLIEF BI/JCK VALVE 12 /N; 7J p ~ J d j l m. e.., e. .e. l Refere: n : I
- 1. !!33-3 0 W-560, 11-1-73, (F. L. Fitt an tr> R. J. ?:cCcrn C l
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- 2. 373-290,11-13-73 (c. A. Creacy to F.. Plachicy'
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+ l 4 I. P,oblen ~ ~ 'd ' - E l As of this date neither the Unit 1 or 2 Prescuricers nra being overste' c. they[o #- G].[$ .; su- = vere d~siped. '"he c1cetrer.atic relief valves (RC-75) are essohtially it:1C ed frc:2 -- gq L the cyste u for.the fillowing raacons: [ 1.' An AEC reltIirement that the block valves (EC-V2}he cloacti . Z.- fl SMnr, phnt ([~.,' y.9 ir,> f er:ert 4 trar.siento (enr.cern t.ver electrer.atic vCra v.dl thickness}. 54 ,4 A,.
- 2. 'Ih ' in sbility to cren 1FC-V2 (This vs17e hr nc t been re: ot-Cy crerdle since-4
Q IC+73 and was hichly unreliabh prior to that tire). W n P
- 3. Failure of the Reactor Cperators to ogn Z?'-72 dj
] t n:.aient. 'urir.g m. u:. m e n pisnt M W I wC The first in trip.s during the tnit 2 T Ser Escalatic. Carles resulte3 f. = hirn ECS p ress r* due to rettact. 3 above. W are uro.ble *.o ec.plete 1 he Unit 1 Test V.' g 4 l P-ogran (turbine trip test in.1 unit ic is c f electrini ini both f:- - W ??.er) h t.e to r:su ns I und 2 above. i T3
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II. c,rre n ! ' / *. l a n T @en M %j da Dre:cer Industries reco =.calation, the followi=g cerrective s:tiens han ocer. " ? M. C:2 4 tskcn: G1 Y $M.:
- 1. The bodies of both 1 RC-72 and 2 EC-V2 have teen insulatad.
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- 2. The 15 ft # settator motcr en 2 RC-V2 vsc e5.n.el to a 25 ft # { rin F a
insulation) retor by Mr. (.. L. Padcctt o' 7'-8 crque nn 10-27-75. ".. A. K r McC mick of Presser Ir.du:tr.' es vs: on-cite fer tr.ic r.o li fimi' n. A Lnvier tori.e sprini vac also installed. (See Fiel-C.ar.ce ICC) d ' ll ip: p og A i -.. < 4 g %w;
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n~ $l LIII. Derul*2_ ^% f@ ( cycl'1"N1'*en([S} ? Since th. r.oter chuwca* cn 2 RC-72, the vC.ve hm te: tin:es. I'Ic cen of the:se eyeles were at ^all tect"rnt ur* n.1 t>r' o."re,p r '15 t F 'Y F PTd 9 c:4 21SO ;sig. The other acyen (7) eyeles were ht ' t !' ainWIT 1 1000 nr.ir. On the first cych v. full p.over con. lit '. the rd vc TC ad to
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^. - lP@'i " cicse. "'t.e clo tirm terque eviten v c bypnce.1 mit i ? *Ee inl #e 3* V t"u to n0V9 v. 'N ci w 4 ensi9ivr.. All Af ter re. wing the,'r.yer. the vglye entinued in
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subsequent cperatica hu been t.ccl. - g , r.. T 'fs'r I 1 EC-V2 still vill not op rate. G,' @ ..,s e <1t'sce.2 Trc,the result.) that Iraulating the valvr ..ms ne,t co1v.. tha recbler.. g' tut thst a Mccer nctor plus vsiva insulsticn occa e:v ' riti. f ator/ 'Ter'F f on- .k W f (A h. - IV. Pece-T e rA d i enr. - m x-
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. We were informed on ll-8-73 'that Dresser vould ' order rarlacer.ont : stor; f.?5 ' ft F, ;;' 0 4c claco H insulatten) for these vahes. The custerer ve r.ctified of *his both i 1here at/ the cite 'and by Tetter (Eef. 2).R. L. Pitt:r. now inforna us that .4{l g!aq [ Dresser *lm not crdered the larger motors ani it r+ yns-ing rcre test data. ' It neers to. us that cperation of 2 RC-V2 since 11-ET-73 has chcwn *hu the J?
- 1ar6c" mtor is the solutien to the prob 1c=. hee F:ver personnel also feel jy this 'usy and continue to ask vMn the 'nev notora vill b-deliver..
MJf,.. g 'Q , " '. M.q It in irperative ' ths' lurchacir.c Isrcue this situation.rith Dresser. g +.I C: M g;a f ***/ O ,,$,4 p v1 cc: J. P. It'.ner W 176 R. C. Pitt u w J. C. Dedders , gn G. E. Kulyn;;ch - 3.S R. V. Strsu ? C. A. Cra vy . Q v'e ' 3,. n' h d' b a I 4 P [, 3 V1 s,h L I
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