ML19322A361

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Summary of Vendor Meeting on 760519 W/Util Re Vendor Efforts to Improve Pressurizer Code Safety Valves.Agenda,General Info,H Honig 751024 Questionnaire,Schedule of Events & Site Problem Rept 222 Re Leaking Valves Encl
ML19322A361
Person / Time
Site: Oconee, Crane  Duke Energy icon.png
Issue date: 05/25/1976
From: Morris D
BABCOCK & WILCOX CO.
To: Creacy C
BABCOCK & WILCOX CO.
References
TASK-TF, TASK-TMR NUDOCS 7910040535
Download: ML19322A361 (25)
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Text

{{#Wiki_filter:. - ~ ~ ~ - - - - - - ~ -0CoAHW - !, S, 5 g5 THE BASCOCf 5 WILCOX CCA!J p! P0hTR GEhEP.110N GT.0UP .D I" C. A. Creacy - Service Ma.uger f 3 - d Frco ~ 1 D. J. bi ris - Plant guipmnt Services Sectica g"T.xt. 2;37) ) Mk/.% y f i s g Cust. j Duke Po-er Cc=pany File ha. y or Ref. NSS-3.0. & 9 p0 J h Suty. Trip repc,rt Cato May 25,1976 f) PZE Ccde Safety Valves Eceting A.n l........................r.y fl ATTE'.TTIS y A mpW Deke Pover Cec:pany A C. A. Creacy C. D. liatley J. C. Sirecis C. V. Hallnan d D. J. Earris Rill reisler f tilke Alexander )" S. A. Folland

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Harry 1.ipe-&Cuire r Ray Rider-McCuire l ? f PURPOSE OF ??ETING 0 si To present to DAe the results of E&'J's eff tr: tevard improving perfor:r.ance of ,P' pressarircr codc safe y. valve.<. The nectin; wr.s cendac;=-d in acccrdance with the tscrirg agenda (Attachnent 1). N !EETING MIWTES 3 Introductica - Presented an outline of the jetzt effert hetvecs 3G, Duke Pcvar, h and Dresser (Attachnent 2). p J Instrun.entatien en Ocence Unit 2 - Technica! ;:cscntattens by Jack Si:aonis on M e the PIP:NO LOADS /8m*N CA*JCE SITDY and the V!Lu!IONfACCELdK0h..:.R STUDY vere ? very vc11 received. These presentations readily dc=cestrated both the time f s and effort expended on these studiez and the hish degree of technical conpctence W of the rersonnel involved. Due to his direct invclvenent in this program, he was i also able to correlate his findings with other arc. s of the overall progrc:a. Followins each technical presentatien, a discussica of Mth specific and T.cnercl j i conclusiens which ceuld be drawn fro = these studies as a result of' both data analysis H visual ebservations/co==cn sense appmch to all dtta presented. ?. l h DISCUSSION l 1: n Operating Plant Survey - Discussed the extensive natienvide IVR survey on 1 operating plants. These ircluded plants fren coast te ec,:tst with several en-3 site visits. Both B&V cnd non-35W plants were incit.ded in this survey. j Specific are.s of mintenance, tiendlin;;, Tcsting, Piping arrangenents, and y Operating History were ecvered. A cultitude of rorreintions were made which i I cenplenented the the: ries and results.of the presentaticas by Jack Sitionis, a y u 7 7 %,.2 p m m. %k. s. m. I I e '7 d(Dm c-W~;;M,f;',A @ N -O; 9".;. v 4 ;.y,,'*., -w. a.

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QQ bFWV?MMM i=Mi3s%22;;2E ;'W mT s)[diMAN5$$f$'&ilMRW - db1 l r2dMj 4Y fYS f p:sef r..,c C. A. Creacy !!ay 25,1976 e W6 3 30 3.8 "1 Several questiens vere raised by the custccer during this discussion in each f?y ?j of the areas covered, Indicating a high degree of enthtesiaso toward the in-6 aQh A fo.rr.ation presente l. At the cenclusion cf the Servey discussion, handcuts vere presented on the infor:3 tion obtained (Attachment 3), and a sample of ny e. y,1ysj 7j the Survey questionnaire (Attachment 4). %' $wl @[ up-w PrRsent Status at ??!I and Crystal River - /. brief discussion of recent events D+G at Lt.cse plants was conducted whiEh primarily emphasized the high degree of ihf [ correlation between those events and previously discussed theorics and infor-4 mation. o j/i 2* 6 i,fA*% t Ccnclusions and recorrendations were then presented, along with the r.hedule e g,e -g for i=plc=enting the action plan (Attr6chnents 5 and 6). Duke agreed to the jg i: action plan and as a result of the discussions, decided :o implement vertical Ag s 's1 handling of these valves as soon as possible. The agreement was mde to have w detailed raintenance, handling and testing prceedures available for usa and dh3 (p .an on-site test facility constructed in time for the Unit 3 refueling in $gi} U September. k The meeting was highly successful and core than adequately accomplished its M '9 g 4: purpose. 4 L,.) ~ e,: Rey] Duke Pcver was ierressed with the work that was required to retrieve the 9 e.w did inforr.ation and well pleased with EW's interpretation and analysis which ^ YdDM.A '#3 provided a 1cgical/co non sense set of recomendations. 17 % D (( 3[ DJM:NF Attacher:ts n, m;.e y U cc: K. R. Ellison N@flj (}R. L. Pittman. AnELU Q dj % y hjh E. -. ii. imaig-- .i x _m p v-N J. E Neils a (AEC) 1 J. C. Sinonis t q@0 fti t: I kWC rd

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?S ,c _h .w nm -- 2a .ws 'fa%. <y 1 w 'l ATTAC1N Cr 1 Page 1 o' f 1 m k m %U a,: IC1 IGT.R CGIPANY 3 P.Nd2R 0)Db SATITY VALu3 g 2:ITING 5/19/~6 ..4>"4 AGENDA .e v x =4 .[1 7,, INTfDDLCTIG; 's [tflayne hbrris Qs] PIPING IDNE/SIRAIN GOli SRIDY Jack Sironis q >A 7 VER-\\TIOS/ACCEliKIEliE:t STUDY Jack Sinonis ,,s S DISCUSSIGi 3 DtNayne f.btris s Q. C"E2ATING FIANT SE TEY y ONcuots mImWE, RMUNG, AND TLSTING) '1 j PRESENT STARG AT I-!1 ASD CRYSTAL ') RI\\T.R d a ] s sutaRY cr ctruusics { j P2an2Nmues m ausr.s Nuna i U STATION q' 1 U 1 ACTION PIAN AND SOER"di N h i g r* 4 I d YE 1 d m W 'l q 1 9 ,J g I a 0 1 H f M ) 'i l N l )

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~" ~ iw 2*.nrt cTro!: i b 1 { Ef forts were initiated by B&*4 toward improving perfor::ance of pressuri:er d code safety valves as a direct result of E6*4 and custcmcr concern over .i gM recerins problec,s with excessive valve Icakage. This concern was ex-8 pressed to Dresser whic!. resulted in a joint ef fort between ESW and Dresser. 'I ~ 1 M'?f The first step taken was to deternine, by joint discussion, the probable M yjy carses for excessive leskage based upon all informatien availabic at the The following items were deternised to be the anost probable cwses ] y tirs. fer excessive 1(akage: f'1 1 [h'; PROM 5tE CUSES 1 M ..I M A. A::M ent tecperature and associated thermal profile effects. - l x-4 Kt. U Jty B. I.xterr.a1 piping loads created by thernal grcvth during Rx heatup W resultint in excessive cechanical strain on valve intercals. we t;+:, Ns~' C. Gd Vibraticn of sufficient magnitude may result in relative scat /dise t:&. novar.ent aad associateJ surface degradation. 1 1 [Q D. ^ :-i Maintenance techniquer may need to be more stringent to insure proper 'l f.w?!i F seatics. 6.: gg E. P.andling and installation should be closely scrutinized to insuro ' MP that the seating surfacas are not dc= aged during the=e processes. y h F. Valve testing, specifically hot vs. cold settir.g of these valves, g% nee.ds closer analysis to determine set point drift associated with WI the thermal growth of valve internals. (; Subsequent to deter =ination of the most probable causes listed above, a 4 course of action was established to facilitate assignment of relative g .aagnitudes and/or eliminar,r each of the aforc=entioned probabic causes V as fellevs: D-i g) ACTIM TAKEN p g A. An extensive nationwide PWR survty was undertaken on operating plants 1 A to provide cdditional information, both general and specific. 'Ihis T included se.eral on-site visits coast q 2estionnaires at both B&'4 and non-tri plants. to coast and lengthy survey j ,e g B. Determine external piping loads at Dcko Power Cc=pany's Cecnec Unit II I M4 threugh both visual observations and installation of strain gauge 4D instrumentation. ph C. Determine effects of vibration at Ocenee Unit II by installation of j M. s 4.. accelerometer instrumentation on the valve body. -i 3 4 MqaN n + 1 i> c.: ~ F-N. j 4 4 4 u:, C C' Y fGi- &;:QMEWy;[jQXfM 4 %VEh[s.WV (m:WGNWf%.m$5NREh?m glnl$&w iW N ; y%g.w,m:;c:s +n fD-w&;;w.~. u:wL.m%M.a p;w. ga.~ nm &L m rag .m &..w&fY{l5Y{k$WS:iN'"mn;n.m$?ym:;dn+'NO m 4 i5?EY$ v ' a :: m pr n.gy A' " ' ~ ' " " ^ ~

e y; -.,-.-,-,,p-.,.--.;.,n:. w.,..,. ..,.n, W c,.. fsi M~Au2CT ' N Pap,e 2 of 2 f 2- ~ F. ;p>i k D. Installation of thertocr,unle f *atrar tr< f';j 1>1 ping therm 1 P/ofileinIer..cricaatc pth!devalveand

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E. Discuas the re.sults of the alc w listed a :lcos with Dresser, gg F. Fornulate a new pl e. 'i < 1 . tre:ecdous eM?eration. effor :, and n as if instt mentati bWwd f rm all pc5:.:321 invcived in the h efforts of clie Er $

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,. _. _..,. _.. _. _,,...... _,...., _ -,.., _ -... - ~ - -.. . ~,,_.... -,. q A17ACD'9?T 4 0: tuber 24,1 M 5 i PRESSURIZEfi CODE SATETY REIJET YALVES C"I.I'IT' AIRE Faf," I of S I a L 5 t I h d I OPLRATINC HIST 07.Y: 4 i l 1. Do you have cachinery birtory cn the valves? 4 If yes, nay I ebtain a copy? ( y 2. Can you discuss the operating history and any itens nich eay r.:t appe.tr ~ f in nachinery history? j Include: d k A.) Description of calfunctica: q r

1. Downstream tr.eperatures Q
2. Quench tank te=perature

] J. Tiec f rom Installation to nalfun:tice j

4. Calculated er 1.nown Icak rates

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5. Plant conditions or transie.nts which =ry have contributed to r2a11 unction such ac If f tin;; of the electror.a; retic relief valve.

l r\\ B.) Any opinion on cause of =alfunction? 4 Y 95 C.) Any unusual conditions noted on disasse:lly cr susst;;ent testfr.g? Including: g

1. hire drawing, cutting, visual appears :a + chility tc Isp clear.

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2. Foreign natter in' scat arca?

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3. Internal cisalignment?

L 4~. Scratches and/or cracks in seat or dis ~c? M Description and size. []

5. Set point OE on re-,sscr.bly?

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6. Leak test OE after testiag?

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7. Have valves teen caus2 for plcnt sh:H:v ?

<tq 3. k' hat codel m.ther valve do you have': rp Inlet size: Outlet size: fg d 4. Has there been a difference in perfor esce betvecn : + valve insta11atir.,a-d Q the other? If so, what do you attribute this perfer.=ne to? Eriefly describe D any dif ference in downstream piping arrangements. [ c'l PIM'T OPERATIONS: 5: -:< F 5. Itave the cede safety valves ever lifted as protective action (everpressurization)? M li so, describe plant conditier.s and results. r -Y' d%} k 1 Fi? l ~ w k M Q,.n@Qd...%w",Sf"9_'g.g..[! Z d sN d k.WI M M G 3 N,yd i+r:4 [ P r MW?956MS5SywwsMD a,., FN J:g C. :'iW iM 3

h ^ _f t !. ATTIC! m fr 4 II* IIO"IA ~ L2 October 24,1975 l (2) ,) .es @S Pago 2 of 8 ..} R s:9 } ga 6. Vnat is plant operatirg pressure? j Electronagt. etic relief set, press? Code tclief set prera? i + l w nt ^ &.1 Vil i j ,4 i t+#($ 7. I!as there ever been a change in the specified normal plar.t op rating pressure? ) If co. state the approximate date ef change; state what the change was, mnd 3 j' any noted change in code valve perfor ance. 'I

r i

p i h ^ c j ~W s l >w,,. t = W cur:smsa:r: y.7 j c;i n { Q 8. Who actually perforr.r valve lapping? (Utility - Vendor) }

ik 4

s a 5.8 )<-l4 3 As,4 )S. 9 9. What type and grit nu:bcr of lapping compound is.ased for final polish? rrys. 46 eq l p

10. Are any r.echenical aides used to provide uniformity in lapping? If yes.

U L'y please describe.

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11. Are Japping b1c ks checked for eptical flerness pritit ta.ise? If yes.

7; vi.at is the required specIIIcation for acceptable ase? f 2 K h,n !h k;;j

12. Are' Iepping blecks re-tacdi Do you change lappir.g blocks when changing free jtg; a Icv to a higher grit nu:ber lapping co= pound?

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13. Arc lappfng blocks visually inrpected prior to ese! If yes, is e magnifyJng
  • W glass used?

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14. Describe your cleanliness proceduras and it.pping compound removal techniques.

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15. Are Japping blocks checked for flatness.if ter Icpping. If yes, what is acceptable?-

M6' Is a visual inapection of lapping blocks cend+:cted after final poliching?

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U* U*"$C '~~ ~~~~'"'* M .Essarc_r u_ '~ m ...m A+m >);,9 g, MTKfC M A October 24,1975 m a - u$ M @M. ~%u' Page 3 of S O) .';\\ ? :; 2 ig%); g Is the valve seat end/or disk cheticd for optical flatness af ter 3%,,m.d 16. is the fictness required? .a + 2apping? If yes, what f W.p W'.?CGl w ;q ,. rr c ,.s-- y rJD,.;y3%* DJ you conduct a visual inspectica of the valve. scat and disk -a (J. T u n sy Describe the technique used. m,... 17. c., after final polish?

m.w,4

.+ c .$=,;yg 4:kyB {g;yz

18. Who su crvis.cs lappingsassecbly? (Utility - Vended n:. y~A

-. J,; m . w-n;y.rP r z tJ d'g 7 Vendor) g* *. l'ho perforos the assesbly and adjust:ent of the valves? ( Utility - c:40~t k.t s'.R. ~,l 19. gr n M +c wp.f3 i Is dirt or other foreign matter a problea? . %}d.,. s 20. y' Q nei Arc any special techn.iques used fcr assembly? Is verticality m%R tS 21. nr'ntained throughout c.ssetbly? m& w

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Z c '. p < W3 flats used fer esintenance of these valves in goed ?a-pM

22. Are the optica) condittens and calibrated!

$74 An '7.h. op*it3 li% %.<

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Tr.STl:C: FN 17here are the valves tectedt ( Contain cat. shop, off-site). 85: 6llv 23. t qiu$ W@d M I kg, y.%r H a eiten are valves disasse= bled and tested? .cM 24. + b t.s $:1_ W[ M Press, steam, in place etc.) How are the valves tested? (Eydro-assist, N2 , p- -- m.s rh, 25. Qh t e. p';F ei np p 2.d I

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' October 24,1975 } + y%',. 'Wadt*4r ; A,,. $r f J~ %of,ksg~@w. Pose

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26. Lift pressere specification?

b .l . m~n&a;e .. >. n-cy,S,- y in W M.m.rrJ..x";n* :.g;eML,o A.,h,z*} .m \\ .m a rp y A : &m-3 sm c. W V M '.Q 9?S.u,,... -t s Uhe,W5?fg. 'Q..A.rf .,.,,c p q q a ; p % $ ~ 2 7. Are the valves heated during testlug? 3 G.,p A/qDM,h.g% 'd., ; State te ;erature. -Any set-point drift noted? u ci x&&g@yns:% W f w.54%:%y c g w'.M?p mcwm v D es %@,,:.Yr :- m f* '.M, d 4 m4.s -? ss m:.p,/w khh$$}$$

22. In k testing pressure:

Temp: 3 58$*fM$MIO '"*di';* CII 0' N, steas): Leakare specification: j 2 2 M.A W % ggg] Successt

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29. Eave the valves ever been tested in place?

.;G :ic ,.q wJ,. ' d'R-4.:.-[ggg Fri=.ary press: Teperature: Success? -{ /t y J7' I cwe 't.5 C ' * '"P ; A3?M pas l'r. +..e a a.,.a..;$.. f.-u. J-i ' ) m 4 .s . :.co %.w ..q<:9 ?

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33. Are there any decenta=ination preblecs with these valves?

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31. W supervises the testing?

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32. Are the valves ever shipped by air er freight?

((Ih;[jff.h{c4 Opinica of hardling? Re-work requried? j n ~ ~. x w. i '.n&au,fRG.l'jw s e g ue w m o;g@g 35%,Pi e' N'.yb' fg.v 1 .w %pG M s 1 K:?;.U;D3MQM;

33. ht tethod of handling is used on site?

9 ?'4; (Sling, verticality taintained, crate to fork lif t used, preventior r W.,.;Pg.p,&Jg .,.c ~~e'? YM of buring and jolting). A.C. w w a e .c A ".P ',s w N. e."%, A -' a.%.. 3 p** 4 (p;l 5 p.,' ,ws. I w,,, 2 s=.$* 'lsN f& . Nf:% ^ .a..w cy;'y%b W W:'Pe!h.~;3', .<:4 L w' %;; 1 " -t s.- ',Q* y.-u % irk r'&g.sy&p wdW T %f 3.q c ip s m g n:Q*"'"' "7.97Qg gpqpp.mp p ehT eth.tm.gf.M,"h.c?E.m.v. uc,ewhWev;v_wa WN&&qp+ynw= win-vd.pM,q me h u-:th s

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-a M. W fEcp ..L .y,. p,,,.,u,g fp 3'.. Wha r.upervises handlingt (Utility - Vendor - supervf ury pert.cnnel) s. .s , u.*

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35. Do you 1.we a written r.aintenance procedure for there valves?

If yes. may I obtain a copy? 4 .W;mn,< . M:n c , w: x a u.';.g,.1 p tg 1 .,a ,,6. e.? ~,r n %p:j ( ,%, g. 4 ' ' G 'J/r PIPI!:0 !J.TJ5E! INT: emnt t .. -;9 - ) ,,C, 'fy:j3

35. my I obtain a copy of code valve discharge piping dravfrgs including 7 m." 'p isosetrics?
w..

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27. Describe your discharge piping arrangement including :1.e folleving:

x,. Y_ a A.) Ec11ev expansion E.) I'istance from inlet i J lj B.) Spring h:ngers f12.;c to pressuri:c:7 .V C.) 11ydrsulic snuSbers F.) Describe any cold spring J D.) Cithal expansion joints reted during installstien '.e h, a. er re::aoval. tg a g j g t An'* J n_g +-, 81 .:.- [ } hE

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,.-._.,7.~.-,._-_..,......,.- k/U .t 4 Arraamoc 4 H " "in October 24,1975 n + %2 - J,q (6) ~ Page 6 of 8 t /3 1 n .oas ' 6 31. Eave you ever insta11cJ: p ',' A.) 7ternscot.ples '} f B.) Strain ecasuring (quiptent l 7;-3 C.) Vibratien mnitoring equipment f, u D.) Fipe displaccrent nessuring equip.ce l J. If 3ec what were the reruits and what is the opinion with regard to .-l 2 data reliability? I Q;7 j

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39. State your opinion of your code valve piping errangement including the vlr following:

~ _; '7 A.) Designed ecll? B.) Eliminates execssisc stress? 4 u-I i t - l V C.) Has valve '/endor ecccented en it? D.) Opinien of A/E vhc designed + installed systen? 1 ,1 l 1. -?.u., i 4

40. Have there been changes in dischsrge piping and/or support system since j

initial installatien? If so.when? k'hy? k' hat is your opinica of 4 i before and after such todifications? .] '. l3 .t ? r., 1.1. Ynat is your opinion on the H2 er sion the ry? "'f i n, 'j A . a 5?i i. Y 's *.s"3 O s c f r Jfa e%ggggg$ 9g'][:,_;gg,d.j.t.7.,., gg.g,ggm _ _ __ .y g.Q, 7 T'

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, _ I, w._. i AUAN!'7 4 Octoberh4,1975 d (7) Page 7 of 8 j a 42. Wa t is your opinion of inlet loop seals? ] 1 l S ,t

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1 ,l l QW.5 TIC;S Atot'T T1tE VALVE \\TSDOR: y i, a 4 4

43. What in your opinion of valvc perforr2are?

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44. Do you receive good parts reptort?

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45. Est Vendor reprn.entativcn have you been asscciated with?

y 9 n. '7J e N 46. Wat is your opinen of their craf tsmanship and technical competance? f$ 7 0y b I4* 'r %

47. What is your opinion of their availability and co-operation?

O D !g r-t 2 AS. !!as the *.*tndor ra4 any modificatf ens or ruterial changes? ny? Did this affect perforranec? Did you agree with the changes =ade? ?, r -{. L. 21 g

49. Wat is your opinion of the other Vendor? (Crcsby-Dresser)

What experience have you had with Crosby-Dresse-' ' 11 4 y 9 u

50. llave. you ever requested or acquisitioned new valves as spares or replseccents?

'[ If so, why? What time-ljtg resultc3 from such requests? [-1,; i - Y 4 u- ,'^ ...,. n m=- - , ~ _ -c m, -> 9: 3:kij. ?-.& si

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... ~.. ng !.TrAritverr 4 H. lionic 67# ifj Octobar 24,1975 ie (g) p~q , u.m ,y-x Page 8 of E D ,.y,a s t,.) u.. as r:? c W.J .s N il qW ' 51. m: Do you notify the Ver. der e.ach time you have a probic 2? < c; the results of ruch r.otification? If yes, what are p re. J.,,/ (f.O . t.. w !.W y,-,,. u.O MISCE:.U.N Oh> ,Jg1 .,., e 52. T. ave you discussed code valve probler s with other utilitie. s ,sW Froblens? Co-operatien? Scope of discussion? 3d1 L'ho? r,q.Lf %W tfb w @O ,q.. i.*;IE s. N.Ff I h}T6, 53. If you have discussed cede valve probletns with c:her utilities w. WL 4.' ssch discusslen and/or visits are usefull? , do you bcIf eve

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-SCitEDULE OF EVENTS r; v.t,1y yy 3 6 r w. 4 g gj ACTIVITY

APRIf, 1

MAY l Jttng JUty I mn AUC. SEPT. I OCT. I NOV.& DEC.' MU.: d t s,, 1. Inst. & Maint. Man. Dressc r will be Iz to ,3... Draft to E6W Plant on Strike -i ~ T.... ~,y. Review by D&W = 1 (tg.] i g ["M.$2. Tcstinc Recona: 1. k-[i Draft to B&W } 8 [ Review to Dresser t Girs j I

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. Temp Amb & Profile i cci3 Complete iil to Dresser ASAP 3/3/76 i 9/:' hg s %. CK Power Rac:ps for 4 t.T Press Trans on B&W Complete i sa 'eg_, Op. PIntnta ASAP 3/3/76 a s' a;.gr 1 1 .h t iD %'. Method for Early Leak I Sih ' Detection Prc. In fo.

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Fer Infernatim CCNTRACT NO: 620-00 _O _ %j*ggg CpA Ceett:1 I,rinterina Ptic* SPR OM) k-h T1 TLC ^AEWFMG kfM&2/ZQ ~ hh*$ C. C. Pl =.<rr! t - Contr.1:t A:.~in. . %qpip

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{k9:L4 myn Attached is rne copy of Site Probles E.epcrt No.hc1c1 which was processed . %w w,o on 4'currae: 62o-0c Of, Fu:ure contra:ts have seen reviewed for the

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poten:ial ef a sia.ilar pr:bles. This prchlehis not consider d applicable MM] to oeer c:., tracts //55 - 3 + /f yd3E .mn @QyW ? 5$ - P_W..AES : !* J.h M r M (45 oc.s;.ay m-s.u

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