ML19322C572
| ML19322C572 | |
| Person / Time | |
|---|---|
| Site: | Crane |
| Issue date: | 06/24/1976 |
| From: | Govers R, Lockard C, Rogers L BABCOCK & WILCOX CO. |
| To: | |
| References | |
| TASK-TF, TASK-TMR 322, PROB-760624, NUDOCS 8001170898 | |
| Download: ML19322C572 (39) | |
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A SITE PROLLD1 j
REPORT TRA';$P.17?fd.
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For Infornatica CO;iTRACT NO: 620-00 C 6 f
j Central En;ir.cering Files SFR J E 2 QE y. /
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S.11. Klein Quni!tv Assur.9nce D
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The attached, cicated SPR is submitted for your inforuatien.
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E. L. Logan - FLORIDA l..M. Kc t.o N A Y l
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.L. C. Rogers - }.ET.TD.
j R. J. Baker - TOLEDO l
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B. L. Day - Intl. Support j
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J. L. Dannell - OTR y
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Attached is ene copy of Site Problen Repert No. 3 22 which was proce.ssed on Coarract 6:C-00 06 Future contracts have been reviewed for the
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This STR has been reviewed IAW UPC-1707-01 NUCLEAR SERY1CE SL7 PORT ENGI:;EER a
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Polleving a rea: tor trip the pressurizer level r,oce as Icv as LO in:hos.
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g o o g c n i e ws a g w ~ p ~1 THE 6ASCOCK & i.ILCOX COMPANf )'a 6. atER GENErfiTIC4 GROUP l a.ej, +- 0: Te l M s k ,g (C.A.Creacy.ProtectManagesent 7 d Frcs i E. U. Vinks. Control Analysis. EIT 28fl. Cust. IblC MO-h 1 or Ref. 0 ( Duke ?cver Ca=pany 11 Pate h d SutJ. A Teedvater Pueo Tpeed " Kicker" Circuit ~ O for Occnce Unit #: (and #2 snd #3) April 16, 1975 I 3 i.......................-...-........ !d The ic11 cuing'information on a mcdified Feedvater Pump Speed Control Circuit, b which has been implee.ented at the 'INI-1 Plant. 1s beins f orvarded at this time to .d M 411ov incerporaticn prier.co any additienal lo d rejection tests schaduled for ij Q Unita 1, 2. or 3. E4W reto= ends this as a temperar'r i:hange to your ICS which trill j; A be follcr.ed up by a field change package. n h 5 Thz purpcse cf the Feap Spewd "Kicket" Circuit ic e.o ensbie the feedwarn flev j centrol systa to continue to deliver a high lesci of floi. to each Stean Generator, even though the stea:a cutlet pressure has si.dde:.ly increased appresi=s,.ely 150 pai. l The codification criginated r.nd imple:ented at TMI-1 i= proved the averall plant per- ,e p h formance by direct 1/ increasing feedwiter purp speed more rapidly than could be ac-J j complished Ly the corthined action of :he feedwater contrel valve and pump speed j contrc11ers in the ICS. L ~he modificatica to the presec.t " nit (1 ICS is the following: ( "i j 6 jr-t 9 Route an additional wire fr o the t9tbine header pressare errer f signal (IC/3 on Draving Uni: J1) to tvo succers which are shown s 3 on Drawfog D8032313F. The ;:arricular su=.:rs are TW2E.EE(6-1-3) r j and TW22.123(6-2-1) and tue new signal is to he co:nected to f.ach j, sum er. In the new line also install a diode and a 100 k ch:t resister in a path to grocrJ. Refer to the attaahed schr:atic. H The turbine header pressure control error stEnal has the following effecti/e _ range: i l + 10 volts = 300 psi above cetpoint. l + 0.5 volts - 15 psi above setpoint. l Ary signal below 0.5 Volts will be blocked by the diode in the r:ev line. .l The gain for the turbine header pressure error signal on each sumer vill - l have to be calculcted and set by Duke Power Cospany. The calculation used at THI-! is given below: l C. O s 4 / y C' -~ 4 J d.m
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f or two f esdvater ptr.rp operation find the 'puzp' eye.d (Sg' vhen the ' l pla st is at 10* pover, ~ Thii speed corresperis to,a tr.rbirs herder giessure of 885 psig.' s py.y 3- ). For a turbice header pressure cf apprcaimate'v 1050 is_i_theqequired' ,_gw/@ I .gy ., f j@$2 pus.: apeed would have to bes (5 ) = (5,) rf 10% e 80. The increase. q feedvater pu:rp afee. S ) represenks 'a frictiun of the tots 1 taegs, of ~ ' q'y i1 ?:A ;R J in pucp speed (S d T2700 rpm to St.00 ryr at T::I-s) aied the output L I volt age of each su==ar shouad be.djusad :o cause an iiterease in -
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l feedwcer pump speed to (d 16;a the turbine heas.fr prewsare errer .',p. signal correspondic5 to l'd0 pai occurs en each su=cer. - 9 i s r i Q-7 i e ,c o l Thefollavfesnumericalcalculationiscelyanexample ./ ,q .,.: g gr y~ ~.,. p 7,- ~ - f,-[.. $ Assume (So) is 4500 rpm sti 200%' power. nen (51) is'4500 x.1.ce9 wM00 rya,x. .; ssd (S; - So) = 400 rpu. Assvae: total spee.1 re.cge of feeduster pumps is f(.' s 2700 t. 5400 rpa or the f oral ir.cetssa in pump spes'l'is 2700 rpm. The gain et each suncer is that vnt:h will caer,e a pep speed cf,4900 rpm 5.-tw the .,.' ;P l error in tutting haaier pressure is !!S peig. y:.<' $ 'j... ' " ~ ' ' -;g - L, g, 7 Mc,n h?: t t . If you h..ve a:ty cuest%ns, '1[vould' O h: ppy to discu.is them with you.' 1 fQ I p 1', t .a Ir U fC.[' , [ ^ C ,h a i Q PW: ~ s - Wi cca
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i t md + w, t-e we. hdh 4, trip from IM "er tr3ntient vns tested. w--J, Tc a to-e r.A 1 -s o n... s. >?*'Ne. ! After ans1s sis er Em- -,ic._..._. dm.. a,. vas oS ~er e-.- Ire:sure four secanis e~* e Gener.... -,. er - mc -:-m & to s; v .y -S.+ + >e .e..:- en c re rc-;r-c12:e w a d. .. r[s..,..d c; b[. . ht fro c a (. e ;e^ ^ y turbine trips m.,.... -. a c. !gg s econ.A a.--- -P c. o * ~.. RJ.7W! tu-bine *rin tu. -. .13 - * %e reae.or had run r.12.'the tay hek t; M 4 P0..e snd *S'e -ip vas due to c yp a tgm worked on to rever. e.,-.-- ,..rerater errcr.) The =ca+
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. 6G:.. i. .>..h;.is. t3 T.5l -.--e A g,, g. x. I.G.).. 4 :..s g i m yy.g rw. m & Q C;iGl; W, ] s W W sf,2 Q Q P % Q,5~$ W Q %~ f U % Y f $ h.N$h. hj$hfh-hhh kY.. NN bb 5I ^ M 'T U k J.- i ih g Q( _ IUNyhM, %m
pp;.h,sp a, S@.m z.. whsgsh A: sep/:gry'WJEG Tj d,% 'HWQ2%,Qg% geKWM h u(mc ssisterst.4 -, y wr=:m e m.. r.,+ ggis Gy' em s: pY@ .O O $l p. Sh.' PROBLEM I'. y,; PJEPOR TRANSMITTAL k 2 1 e*e a CEAV.D * * * * ,.1 FILE: 12.T 70: Tor Information CatfTRACT NO: 62n-r4 0 6 _ Central Engineerint Files SPR '2M eso. O m _ C. C. Plunket t - Centract Admin. TITLE IC3 'PERFO@WOff .y _S. H. Klein - Quality Assu an-e O' LOO'M EONS 70E" c 8.15wcween-Tass rneineer 2e Acrof> Wip i.j R. A.G sors - Protect Mana=er DATE: 3 -/ a -76 D The attached, cleared SPE is submitted for your information. 46 ei Y TO: E. L. Logan - FLORI2A A R.LO.Ldwxs . L. C. Rogers - MET.D. R. J. Baker - TOLOO 1 b. CLOUD B. L. Day - Incl. 5:7 pere P. E. Perrene - OTR h'j J. L. Doncell - CTR j Attached is cae ecpy cf Site Pr&les Report No. 32) which was processed g j on Contract 620-00 C I Future contracts have been reviewed for the P potential of a similar problem, his problem is/w considered applicable l to other contracts 3 #/M i P j REMARKS: 1 CC G. M. Jacks - Plant Integration p This SPR has been reviewed IAW 57G-1707-01 NUCLEAR SERVICE SUPPORT ENGINEER CL13il.h O i.t.,. a t.u v i. 3 c ~ U~e. D.h Lu t ,a -_ c_; gggg .I y g
hb. b$ N'bN bbhhhh[ dk fhN$lhkhkkk[hfh i t i es-21091-2 (9-73)> j g r@- l SITE PRCELEM REPORT BABC0CK 1 vlLCOX -9 Ct!STOMER CD CONTRAt'T h0. 620-oc05 SPR NO. 3:2 REV.NO. o [ yENDOR sco P.O. NO. TASK NO. 2 : GROUP NO. og SEQ.NO.o l O SITE ENGINEER REQ'O. RESOL.0 ATE REQ'O. CC11P. DATE S
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df p-frG/ IIILE its arcR'/CE FOLLOUI:s3 GE: OATGR-RE/CTOR TRIP p-gaA@ DESCRIPi!ON OF FR03LEM J
- 1 Follovirg r. Reacter Trip the pressurizer IcVel Eoes as lov as !.0 inches.
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- 2 The Rese cr Trip en high RC pressure within few seconds,fc11cving a Generator / Turbine trip at 1007. rover.
Per custerer there situatic=s are unseceptable. See INCo. protice report attached. STATUS ACT!CN 10 D TE thCLUDING PERSONS CCNTACTED R. Vinks of Centrol Ar,alysis and L. L Eolo:7 cf Enginecring are rnile aware of the probles. FURTHER ACTl0h REC 04EEND50 Br 2;TF PERS0hNEL ,1 Iscue field change j coverinc Itretine cypuss Valves centrui signals following the reacter trip should ,Y be from OISC's. y p%) n grg.$
- 2 To review reccc.enir. tic =s in DCo proble= report, specially elimination er
) rele.xstien of 3"U I.inits ani love-ing setti:4s on last two Lank: of safe.y 4 I 7f61Ve S. .-p o'^ J 8 Oj ~ ' S$CW " l9f iYhddC[A$AC ' """ " #3ff[ j l, sm RESOLUTICN Q $(_- \\9ur z.) Q % x, M.. g ts To~5.L h thth boM W -T @ e. (My ,x x m@ M rd W AFFROVE3 E: SIGNATURE DATE l S$i.e t b N.S SUFPORT Er!GINEE@j{'bftlli Db oa M hD%I k .E > /), hkh $IASKErGINEER/. c{i rr / .<,q - ? c}6 me. Wh Af =dm/ n-l f?IES i g x W' j n - PROJECT N2 NICER [$b. Mr/7t. i COST CATEGORY O NGR4 OC D DG OL O VEN00R'CLAIP. hp CH:RGE NO l FIELD CHANGE REQ l FC N0 k$ AUTH - SITE CC'4PLEll0N REPCsi h> RECOMMENDED STOS. CHANGE c.u : 4 1 2 SEE ATACi:EC %e w s y FINAL DISIRiEUi!rsi jp) a nwtusw.em g A DEVIATiuss O h0'.E O SEE SPR REV LO. 5ov Mes W @g %g g 0AIE CCEPLETED /// a / 7 6 lStGNED-BY S (~- M 0^ W 'RF UNT. ENGR + --+ S.0 N. CONSTR. IEP. 'FPROVAL, Q f Q a 3 DATEK/pj'/yr,. g;g r ac e,, 2 gQ ; / i . \\p ' 9ry, ' p; N { lm s ' i.% y o,\\ Q n.. S
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Reference:
RIM-I-62, I.. C. Rogers to J. G. Eerbein dated II.ay,1975
Dear !!r. Herbein:
Ed Zrc.,1ineering has rc er.tly ecepletr.i - rk on the revised ceve for .s. .>r. u: .e. c4 ..u.4.. ,..... s .e, 2.,......;,.. %.~..,,~...o...,a.--. ..u r - 4 .e..--.. e-r---- -( testinc r.n::isted viti the ;.re,;cced -11 3 trip or 'ctd re,Je :icn test at rctet po.er. Isttach:er.ts in:1.;'e th::= ca: ves cni re.c. appropriate table. An unalyst3 cf plant c;eraticr.21 chya: eristics duries the Janacry 23, 1975, power runh:'. transien: h2c led to a revisian of the cur.* s c::: rising - r t.., u.-,3 r 4..,... c.:...,. t A su. e 4 t..a,s.. =), o.. . 4.. e3.,. e
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-o v'aich ccn te in.:crpar:.: ra late the ICS at the first op.:crtunity. Oc - parison -i.? ei.e ca: ces of Fig e 2 vhi:5 : : currcntly in use reve=ls ._...s. -_....,........;..t.,.-.,.....r..,
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.r....,., t.,..,.,,a.o., .;..r.e-, e. h a t c r ve.;; r. r e lir.i t i n g : lover :(speratr.:: and pa.cr leveT:. Tr.2 ft elviter. q.rature curva vis chan,el ::.- r:re ris-represe:.t *.he effe:: of feedwiter :e.per:.ture on feelvater f1:v and ste r. superhrat. Also, reactor co lant flow ha:, been encnsed clip,ctly. '.'hese revisel curves are to be utili cd for all plant eparctica fran nov on and are not only associatei vith the proposed plant runbad tests. The revised t'IU Limit curves ere tested on the Sri Old Forest Ec2.1 PG sint:la:ct far Nveral m,'Or transients and the ""I-l typa plan with the nev.%'U li.ita erferrel very reli. W.rn ::.cr2-cd uith t.h c '.i et:rves, the nev 11mits ravided creater crera.ini; r_trcin at rail p:ver. he develor=<:.t o." tb. reli sed carven v.:s Occc :plic'.t.1 b; usin'; *.ha,f L'i_ ee2. iried sty m ca. grata: p :a'dr crie and.!eterr.i- !_n faar Farr.:v:er.1 which cenrei.t-th. Art *J Li-its to ism: er ett.ntain 35 - 0 Q (a p.fhe.i t.. X.*Ler in.::rparli.ir;; the curtea into the cinttiator icd, the f0Tlowi:g op. rat lan G :ranJIc:..; were in..'rporatsxl: (r.) ramping power up tnd down with both 3 and !+ lic pump: cperatin-1:.c li.ew t L v..tce, C.wpor g i t :' H > vet t rM
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h s c::srrei an1 fe.tr :,p. rational prohic. snould ae.elop.t C-1 + since the LT.J L1=1ts at:- le s restrictive than the curvn pre:d:.tly in E 9c use. ll I a J 'The h0cc par 1:0 tL:lc pre:sent: the speci.?ic infer:1 tion which defi=cc k. es:h of the four curves in the EU L1=it circuit. g r 1.diition21 Ir.'ctr.stion.-;th re;;srd to icverir,, tLe setp: int for pressatir.er i cicctrc 22netic relief valve, is inc12 dei ar.1 has teen reviewed 07 tr.e Y control Ar.clysic Grcup of.hteock i '411cex. 1 The effect of 10 ac-ing the.setpoint of the press:-i c-p clectrocitic relief valve from 2255 to 2205 psig bs been e.rslyzei ar.1 vill f'.cv :n additiert.' % lbs of etein to y, [ the Ele:.rh 75.nk atrin;; a very severe tJansient. p. M m,c' 6 .a;.u e wzy fur;a: -2est1ans,.:0.e:.;e cent.-t ne.. k_. J Vctj trny y t, r.,4 am,.y /t$$WW 0; ~ Q m so ?_s(l,.J ~~ fQ.,U R/ c -, s ] i.q2n, .m ~ n L. C. 3:gers 5',s k4 j;.Mpyg
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