ML19322C574

From kanterella
Jump to navigation Jump to search
Site Problem Rept 386:on 771013,electromagnetic Relief Valve Failed to Close on Seventh Test.Caused by Pilot Valve Stem Sticking Open Due to Close Tolerance Causing Binding & Metal Particle in Stem/Nozzle Area.Clearance Increased
ML19322C574
Person / Time
Site: Crane, Davis Besse  Constellation icon.png
Issue date: 11/02/1977
From: Faist F
BABCOCK & WILCOX CO.
To:
References
TASK-TF, TASK-TMR 386, PROB-771102, NUDOCS 8001170900
Download: ML19322C574 (15)
v • d • e


Text

{{#Wiki_filter:. (,,I SITE Pr.00Lai f / REPORT TRMISHITTAL eeAA CLEARED **** FILE: 13- /Y .TYb ) CONTRACT NO: 620-00 h TO: Cha..ge Control For Distribution SPR 3Ib S. 11. Klein - Quality Assurance ME bM Central Eneineering Files p.8uf2Gedet-TaskEn2fneer gp gg g-/.,,g J7 be F - Project !!anager 8 l ~ J/,2((7J-DATE: STATUS CODE C L. C. Rogers - MET. ED. F. R. Taist - TOLEDO J. R. Bohart - Intl. Support J. L. Donnell - OFR B. A. Karrasch - Plant Integration Attached is one copy of Site Prob 1cm Report No. c3 7d which was processed on Contract 620-00 /Y Future 'entracts have been reviewed for the c potential of a similar problem. This probics C /is not considered applicable to other contracts RDIARKS: .m.. !!UCLEAR SERVICE SUPPORT DiC!NEER gen n' h Ill ilil

g. i i i ; :.. 'g

,s:. i;f; 8001170900 y IbN ~$=$$Ni

c : n. s......,I U.CCC ?... H MX SITE FECD EM REPCn. u m :, .r,. t. x ,=v-mew,- y a s. =:==.~w ~~- 'a n n,.nn.. O ii t b l N A 10 d i> A n t u v i.. l u. s, v n.. Spa gg, gi 3 r v.ig a W.,,- j Toledo Edison Cc=pany F.R.Faist 11/2/77 13 - 620-ooit g a p' P.A. no. P ART M0. / i A;a. h0. i ccP. J. t {' VEMDOR Crcsby 023 090 IS 28/0h1/005 /A Tiit.E (9AA 30 CHARACTERS) f [( l j) /(3,a*.':'i PR03LEM CONTACT e 8 \\ \\ Y,'. Electrematic Felief Valve Modification J. E. Andercen i DESCRIPTIO!I 0F PROBLEH: l P See attacheci sheet.. = 2 _= l E E_ 3 b STATUS-ACTION TO DATE. INCLUDING PERSONS CONTACTED: Lynb. Engineering is aware of g S. A. Lamanna, Lynb., and J. A. Lauer, Prof. Mgs. kncv of this prob-this problem. lem. T. D. Murray and 3. R. Beyer, TECo, are also aware of the problem. FuRTHER Action REcomtEMOED SY SITE PEstSONNEL: Crosby installation, operating and =aintenance instructions No. I - 1115, Sect. 4.2, " ace in::tructions vill give the proper d# with the Crci:y veni:r to dete 4-a pilot valve sten adjustment when actuated. 2. Engineerin6 to provide additional reco::=endation and concurrence with action taken. l ,l f;), :n, t., t 5,. %* r ; uv...o..e b l. < n. c.t.2 ec p.. o-c. i.cn. i RES0LUTION: ( . v. A. /t t..,k,, u,,k JN k..l,(a, 7%. iw L K Du* M -2:c.Uv"*iJ-fdU (.~ n.C ~ a tfl.{,.y ('ws(., f QmR _,,k.Q m G c.c.;.p z &.Z"/f l .LCt ^i p c,. @ 'E z DATE APPROVED BY DATE o PR' ARED SY h 5 W _W //'~0 ~U 5 6 $ 4 g'e dh x $'I$ I /. A aw //-7-77 ii / y CJST C'.'ECORY FIEL3 CMSGE 4Q F.C.A. NO. SIGwiF. OEfiCIE@ l /V[/I OYES MO O xon'__.. OTHER S O YES $.}. No g o.4 SOM Letter #352, cocy attachel I@'#I'0"5 SiiE Ccw tE!!a s car: NONE SPR REV N0. O v :...: ~ E *. - e~: ~.':. ~v. ra:'.. : c'.'. m ' : ~~- Ni CC'4*LETE3: 3/24/N l rect and vill not be revised. Additienal adjust-z } ' gent check provided. Eng. ccacurred with Crosby / CCHPLETED SY h. fj, Dart F. n. Faist .ta4 3/2h/78 ~ " 5 F.n.FutetN u i i!M' M ym *.m.mJ J u /*N. a t *' I N I 40 W a s m r*

  • I e

gg. .s.=...-.

p_ c SPR #386 8:bcock&Wilcox 620-001k 11/2/77 i i Descrittien of Preble=: -L On 10/13/77, the electrematic relief valve vcs tested after the completion of re; irs as cutlined in ST2 #269. Se tc.1te va: cycled six times success-fully. On the seventh test cycle the pilot valve did not close. The ERV l vas isolated and permitted to cool down while waiting for Crosby representa- -tives. Crosby rep., Walt Conroy, arri ed and the pilot valve asse=bly was removed l from the main valve. Disassembly of the pilot valve revealed that the pilot valve stem had stuck open due to the cicse tolerance causing a binding con-g dition between the O.D. of the stem and the I. D. of the pilot valve nos le. Also, a smil cetal particle was found in the pilot stes/nossle area. Sub-sequent cleaning of the inlet piping to the ERV revealed this same type of metal particles. Se Crosby representative furnishei a detailed drawing of the pilot valve stem requiring a dia=eter of.37h This was changed to read.373 dia=eter 373 * .372 i by the Crosby rep., and the stes was modified accordingly by TECo Maintenance -under the direction of the Crosby rep. This modification resulted in opening the cicarance between the sten and the no::le thus eli=inating the binding. he ne::le was also ~--a4 out viti a re::er the sa e si:e, no =aterial was removed. All parts vere cleaned and asse bled. The solenoid linkage was adjusted to drop the adjust $ int bolt more squarely on the disc actuator. In addition, the adjust =ent bolt was positiened to cote the pilot valve stem off the seat a maximum of.125". It had been =oving off the sent sc=e.375". De pilot valve vas tested'vith5ut ~prc~ssure by actuating the solenoid three ti=es. Se talte v.s tested again twice with 5 cr 6 secends between tests. -Ris was followed by testing the valve five more tires assuring actuation each tine' by a ce+-ut~e delay"cet-Jeen tests. The valve was tested with a _. pressure of 1100 psig.on_.the second and third occasion. =- h. h86 N**** .Ti.A:nif '*:'~ _ : U _m 44 +. r- ;:-

r. l

'I

=m -

~

_ o_- g %v uw e<~"- y.s.e,c%z D 6-&Ct'/ W4 m .<k s A A G. D ir j' f d,Ji 7 4 4 A, ~ J 2.J' M n f &^2 " $ " y M W $, 3 - G n ~ L .C=e f ga 7".EA ~ Uf A Ab dy N~~ f., c of.4*. dc' S C~ f ~ $($ A lws,/ h be n m edet=%&ga f ~fg KAA /csa /dA2- + 44 a-f%__..-~~p eg27Q 2 ~ n y n d 2 s s -- a n - L

==- W~./~L7&w by p; .Q.Q.f%. [k ~ ~ ~ 't s 2 /rfL /6 O.; x ~ p ~ : J a ~ / W & q

  • MM ww m

4 y, ..... g( 05 ll' f~ O - p ~ /-eu'r - ~g'Q.. g l y f.k

_o _-

ga 9, c_. (p - u=.-a.,

.,..>y.d$L. Y c &-ty-7? 7 ~. tos. A s.A. i av.co.s ~ w w.. m r-s'f~ =& ar2 - ayy A, wnr = .m =, r * *M. ' _ 3 7 f - 3 '? fa,- -g -m> - -- u.-. _25c) 4 G L C.:2 ~ A 4 A j :Adp. 4-y.apl s. ,y,A-p2w n

s. n=

n s u, Asa4m C 9wf.cw - & gteg#n244- ~yy.d.d' o x,- & y ) - A ' /d W. A a L 04 - A A g.A.%. s

  1. #~

i D $ $ t, A J M.a 7 % n h.4 t J~. m - Jfe

  • nd,4

/ mie.F4 m,]2:>'%J%- CD :2 # a %g,B '~~, t-,a f a A. a 6 L. -, s o k f e /e ~e. c A ~4 ~ 4E639 s.MA- ~/4 J $A& y,4 j) %.. n, eO e a e* ~ j

L g, u . g.T w g g,. u. u o. u..,;, e ~ sg-6' h-e< ~ E/d,( /C'.p L, 0 4t

1) <.6

,,o . /y - + alt,.m >- %- . /_ W S'% = -- f -.- n ps - _f

  1. 4

' ~ckL lu % yr=o:/o p -/,~f &L dJ c% _ ' A ~ t A. L ! A ?. A s ~ A W ~ A - < d ~ s g L $ s.., .w. M. W 9 e h / "/cr7n 1 1 = lew . Q Q o)g 'L\\W' ' L \\qhg i %-),- .t 3 c. ,. - ~ - -.. - - l 1 ~ 7.r i 1 -e. s - ~ ~ %,, y j

-**,M.tr;.:C C V.wt v. _Unur *< y ' { h Ce*IY '.r.one*.**e ces ** o. 3 ** * *J s 'Ai*C***% 't,.;; y*....: t-., ~, .. F UNCit0*; AL ACCOU*J T t.. t ;.u i s '.t.

  • . T r i d *.,

'A'i 3 *. 3 fj{.$ $ -33 0:0 .6 '7 7 ^ 2-) 2 0 g'y.p s.( e f. t N

  • f M u '.'s s f Pa A v L Ard o No.

a f s4lYhkh${ k O f ~ navv0 aNITI A T L D S Y1 Q MWQ NQ. O C W88f 1 O Aia No. O NCR No. O oTHEa atSCRIPflON Q) PRC SLLM/M ALF UNCTION -b W hYf Y Y /s b l*** NOAr(- /t.) / 7"N 80WlW ff /N h /fl kb bf[*~hC I dsO 2f.C.[d/d ^

  • 1 1

Normal O Immediate O Emer;encY O Outage O Preventive Maintenance WORK ' eaus.ae Nucioar S.foty Metated/ASME O CLASSIFICATION ' O N. woo.a. N..w...., s.e.tv a.. REP RECUIRED CLC ANLINESS INSPECTICN RECU REO f47RO REOU REO M Yet O No O v,i 4 t4. O Yes K 'Js FROCY OUR EitNSTAUCTION APPROVED BY '?.!AINT!/;ANCE!ISC ENGINEER l DATE N..,etxt A} f' C -f Revision ~ S i p i REVIEV4ED BY CU4CTY C ;NT30L I CIstC,';A'TED INSP2CTCR (Namel l d '.* tN. L' E V E. WY* j te A.o h t' $4* ( dD'* a t 5*'ECI A L I N S T "CTI C N5 / / )))) / f/U h $ /*' l ASStGNEO HESSONSIS6LtiY ' PERT.tlSSION TO CO.'. *.*ENCE WO R K OATE / dw ~ Y .a d.c. CO 5? v DESCRIPTION QA WCB%.* E N F O H M t O

  • A !J3~/& ? < ^

l/ A & M- /* >/,,! MM h#PS 0 kATM <-M ? ~ t ~ - e

  • N

= s h *$ 7~~ Ws-So 5h '!'8v FS - I AMS hb y $1f. / r~ 0, c i r-l /,1 L vc i {ab.'t) WA l.!l f I f /~Ol

  • v) 0.eaha wn c m n _- s,...,

g ID f2 A L-? YtM..c j e rht!A . t% b A~V$ $ I ~ V - 1 1 ) O{Esggu,ifj.*.pf t,8gTpO N CUE QATE SP AM E RTS RECulRED: f e.D. N O. A mu - %" A/ t/ f u .;.s 2 s W O' Ye5 O N3 (L'St a.tif e P O e-f'- / / . stas JT r.N ANCE CO'.tPLE TE D AND 'NS8f CTIO PE 4 E !:CUIP E *.!!'J TS O F AO ISM G3 iarsposst pt.g reas ua., o4Tg El DC5' '#2 3 ins et.c Te,e '. / oATE ' / h~.I*'.L,. N /.7b *1 I O ?./).9h,s /r - / 7-7 7 f av., L.. ~'~ F Tr?-T1T ? n u -o r.l>7 F ~>. M N M !?'d.i*D. 6.T e.Ts /A:TCE. N & ~ e ,J. IEST No. ./ A ?.-/. w ..n,.w' F 3,,,, y ,.O R E M AN F O H k V / DA T f.f//7/s'y ~ ACTION ITE%ts. FOLLOW UP ~' O Nenn ro,m C,,,,,,,,is, ,,m,.,,oi gNone Recu,eg M t.ut.,i:,d Folso % g v.a.O rgO. 7 #7

  • 1* *b i'~

C U tt.. e O sa.i aien 4:n;Ovn No. .....s f. ;.. t. 1. ' '

  • .7

[ ..s, u s g. U. - DATE l t ..ei .*%*:... N,=,...l ,s, /sy r p l I m, ' e n -Q,,t, 9.,; y -r.*... .:4 p l..,. - '- n: .. e, m-. -m. - ~ - D1 ':m m4 r m y u u. u /.m,..a

s.
; ",.
  • .-t t.....

ti 8.~.. q q y gu

e L ) / +9 / C D y i .., g Pe T. 6 P. J. 7 A '.J Nii N T Pe A M & areO N g. h/ e*, '""* 4. Ys=o,rh.;3 'T** t ]3 t'.

p..t C ' o s.
    • ** w v,.io #Ne TI A T E D e v

'J O MWO NO. 2. O wRt t O Ain NO. ONCRNo. [ROTH E R S,,, l*>'* * _ 2tsC M sP TIC Pe OF P F.O G L E M/M A L P U N GTIO N

  1. 1.*fH:*,

MA.

  • O Y

~ * ~ " ?A wAn'4 %,

s. % assx;e!,J.

1 -i;~ . ti d %. (/.'fm A.~. f. ---s A ~r--T'/ -:' w -a*. ~ " :' f*. .,iz t 3.v o m. o a _ 2,a - m :~.- ~' J..w Y#9'$ / l 1*' A*& A '2 I . LA--C. i.u i65 A.- en m.m.0, & >~'JLfk ),.'L., .. A.AW P > <> -t-r ~ vy-a / O I Normal I immed. ate O Emergency Outaia O Preventive Maintenance WORK G CLA55tFICAT:CN ' '" V ,,,,a* Nasear safety R ees teo/ AsM E Scheduled For i Non.nougene O Non. Nuclear Safety Rosateo j r i.'v , REP AEOul AEO CLE ANL, NESS IN38ECTICN a:CU:5d E D NPRD RECuiaEO s. [kas O No O Yes .MJo ' Yes /1"Jo PROCE 000 E!!NSTRUCTION l l APPROVED BY MalNTE'JANCEll4C ENGINEER l DATE Num e Revision j p REVIEY.'ED BY QUAltTY CONTACL OESIG'TiTED INSPECTOR (Names MIN. I.EV E'. %,cc,AL,.37~ ctg.3--cQa.w A f h.sr-GJA /cc:b/% 2-m 1 1 s v-cr p N + l.'e ~ ~f b~Y'- A':', ?<$-, Ta_[.u $ /,)c~t-u m m,:.c, A m:N :E,un i .E=.,ss, N w c u..ENCE m-1' 12~ S-.,./ J. >,. ( />'; A - N'WW J OtscR.PricN OP v.o R m Pt +se c aus O /} X K 2 V A r> e. m m u.4.L,/ L ) t/ n..] L L - & l. '- fn w 4. # n . 1 % A. ,i s L J s A. g, 2, 2 L..;.-.? . c o 3 e 0N,s~,.a.e W 2L _sid:, S.u k~l JW. <<m. 6 mA '! b_ %~ AJuD's s~l%JX{4 L.h Jg.L _. + Mt_ v_ --i n[ Y j w > wLn ) I' M.~ d _ '$ 7/5e Sl'Alh Ml<-e W.. od 1 _.u.. &. n v.m s d..ix., ) 2 .t .uv.'., ru n.>a p n / r. n N r .,-l-u~ / r,.. v - i ~,. ~ ~ - TEST EcuePMEN T s.O. N O. g CALLER TION Qui O ATf/ SPARE PARTS REQutRED: '[ p -{} /)'l if, } j r-3 ~ ') f)" Y Yes O No f List MtT' cr P O. c* E n.' MAINTEN ANCE COM8t.ETED AND INSPECTED Pia PECUni.5 VENTS OF A C 1 S44 C.C M T.8 ~.e 4 i..%. v.Y *l. p-DATE A E G Por.ss.gi, g F 0 g VAme J OAyg g/ ' M'i> <.*.':r*** J$' ? ? $ * '5* N su, s*.* / f:ii;.C cd'.Y.:7 :.: r ~:: ' : ; N s-i- - G-,= v A.e i..u.?... c0I.~7.,c L '. t rg'T N o / C4Tg \\, p, c T r o R c v A r. r. A a./ Q,- c.d : -- 4 *.. / e'/* /.h/-->' c i.i' l ACTION ITEMS /FOLLovt UP / s O t rrIO Fem C:-.:rcies ist,e::w.rew 3 *.oce r:euere4 O in.toteo Fairo a Mv.o NO. O Other O taiti.4:c,, Ainredn *Jc. , ~ MWO REVIEWEO AND APPHOVED "^* T E P. A cL/. c L NcaN L L n DATE -. -= . /..:.....2f7 .,4.>//w9 ? .n ..-n.--

  • ~.rc n,... 4

..,,e,,-...4.,.e,.~,e c.. e r., @[D) p <.-l..V ,. e tm u....-..... A c o...., y E u.ew. c... 2,:a......., h $7f?Vd) g !aM M L{ A ms. r-a y

j,; j,.fgs.nC'";E fJ, JrJL t /.H t r.".'. If 0 ? * *! O?l .Z-..**"~'"!*,0.."*.".~,'**"'*.3".*,*1'*3l.. *3.**, - ~~

,,Cft11 fit *hCE V.OfM 'OT80E f f. C
  • ?Jf>ATIC?! *:llCET, "^

>t i' A .n.,.. s or R.= O. J '/ 2. I ,g.. j ' a,, O..., --...,._,_y. _ -c: o p -_,._. v. ; iti a j . _/LLA __,,a aom 'l! l s AAJa - //cc a ista JLJ _ety/AA h A l,, L / n in / r ~ A?ab-r ma n ao ki)~ L /f 2.i.ro.m.i. J dd mf*AA iL*, i a.<AM. L, un L.0). l Ji .a s 9 -, L ~. -. A., u f n 9 M _ i 3 At s aLR A ~6nr - J A L A ~. f '" l % R ,x4 /c h eks 62f 'YW \\ t = t S I

==.s 3..... l + g n . -.-. =-~-~* ' ~ ~ ~ ~ ~ ~ .._. [C f.1TQJ ' ' 3;'-'y][lf . '3. W@Un @unpi.h. 6 ~ v,, o,..,. m.- r c. e-- --+^w " ~ " ~ * " ' ^

..... ;..-...i...T i t' o [.\\ t. . s. g.).. -.,,g M. '. 1 *..... g.. $.,f[c.f. G. a !N. h, 'e i., C s 4 (<$.b i. gu , c... Le f s1

  • J 7

-*J,. ~~T 0 g- { .c gy N ?. -)

-'.9..

52.), .a '.7 s s o 1' .. ~ -W,,, I ~~ ij , ' t.1. r i / i y t*J,, -+ p tGl "_* l !- j>,

  • *. M.:.,'.g

. y E_ A y g ) .a c

    • ?

n-N'%.N .A, - (.., 4 y. , _j ; -._.. v. _ ', d,j N \\\\ \\ s s { '.M, {x s 3Q.,../ .i c-ct. _y 's } t s o

  • m!

/

w...

.) t,. LJ-4 .,L..;

7e

!}. { -- - i \\ %* \\ ~ O sa !I N s o:' l'N. in b e.i - A N6 a;g r.: 'ee 3 i t a ln t.,1 j b.i p..' ,di h .h v. 1 t s s. = e s .I 6-... w

t..

i s,. .. ' j Q' i o. gQ-r.-- e ry ,,e Q

  1. > M s

'? ' is ('. t.,. Z./N. *.*, ' l e I;*: j 's. o v / y4y ?,' c o b.; 'N ,. :-N t .l

i

>- S d . E'

...a - ;N;eti' '

O. <~3 @9i f.":Ql::-l: / /

  • MO4 t,,
  1. l l

s 3 : :- r e r '- 9,' r, i ~ - ?* b.e *e N. b.,J.' i -*._.3.. p-t ..s.o..H.4 8 i g: q i' ! l Q% l2;O ~ i "-kl<C y, r -:. .m 8 %,j. i .rq ty, /.

  • [,.

5 e.g.4 ,g 4 l .e

g..

t. i.; .. c-e. 1..., l #'. ,,.,, a.n a i N. r' 6-J. . : #.+ .g,,, .,4= .1.....'....,,3.,..8,. g .T- _ =. _ a I g.3 Q,. g.. .w t- ,. x% eg i' %.* 3

  • ii::

m.., 4' . i.:. .s.. 51 s :f's -I i d j t y e ( l l t. w i g .l ' )i ry-!l i 1 I ,a y'"~"'N. W !.' ~ g ~.- ') s.) i r a I i g. t *... I 1;i g. -e ,= i, g,.; .r g l I' "'""f,

s.s' g

q. . '., 2 s* + t ,,.e .,9 t ga,. .i r .,e 3,., e.l.v, k. h.: S d.a u 6: 'i':' S!N S !f.,i;l .m. o,. >. w .e cd.. /, ' .

  • s t-

,q .q r .. ;s. i.. u_l

c.,,.;,

s.: s. s l,

..;..Q.

.o 1 s .~! &' N'%.+. r y a PW 'd w .g 1 a c 's ) I D i N' 4 ",s 1 s ., e, o 'e ..... jl el 3 .. j l 1 E 11 127:00 h'i. IEGOGN W..y r;, I ./ P s.-- % ".... o- / J ..t s. ...+ 2.*

1; \\,_j _ ~ ~~ \\ _. h)d- 00 / */ i**. -IO uvu soi r

  • s V

) %7' 8 = = = a @ @ @ = @ / I -) ) .Sau.racou ar. t - - ~ - I ? 1 . J ', I l OLTLET 1 I i w, ^ ,y, / - r V w. e m a_ = !.!/.M ds .4' / N w I 7-i yl 4, L 'N j e E y )_.. j.. w.. --w- - w - s c / e N?. M n\\ l Ik... me. :O ,.K m,. / k!/ !$ / / / :':'- L d // -Post o / I/ @/ k ~ PORT r -- ~. e. -c., c l j' f/ II II INLET l- \\ \\ pig, i ASSEM BLY__OF_PRESSURMATIC V ALVE STYLE HPV-SN .d f "I l f

\\ .... ~. ,' '..l.IN,'CRO. SOY V A L V E s,- m GAGE COMPANY ~ ~ h0 ri MASS O2003e 017 / 304-3121 O h.c.o. s 4 3.p f J T H A M. v4 s \\. 0..e pn.: i*k ' M4cr 3" % 6cw ~ ~. -__ p. n=.:. :... s s DROkl3 916 G76 1/ =sm.) im -) T / py,s ,s u. s January 13, l w. /4,1p. *.M The Babcock & Wilcox Company Power Concrating Croup P.O. Box 1260 Lynchburg, Virginia 24505 ~ Attention: Mr. C. D. Carmichael Senior Buyer ' ~ Purchasing Department

Subject:

TOLICO EDISO!! '(DAVIS BESSE 1:0. 1) EPV-Sti ASSE: GLY !;O. I:54890 ADJUST *EIT OF SOLE!*OID ADJUSTINO BOLT Centlemen: t. Picase forward the following information to Steve Lamanna. . Para. 4.2.2.2, Crosby instruction No. I-1115 is correct as written and should be followed. Proper adjust =cnt of the solenoid adjusting bolt can be further checked as follows: Move the solenoid plunger to full stroke by pushing to the Rhximum position. The Disc Actuator Pilot Valve (19) will be depressed by the adjusting bolt (31) with the plunger in this position. If the adjusting bolt (31) were to be backed off a distance of approxi=ately 5/32" (which could be accomplished by allowing the pluger to drop from its full upward position), the adjusting bolt (31) should be just beginning to make con-tact with the disc actuator pilot valve (19). Should the con-dition prevail, with the adjusting bolt (31) is making contact with, or is moving the disc pilot valve (19) below the free , position, the adjust =ent is not correct and should be reset per instruction I-1115, Fr.ra. 4.2.2.2. The above described method is not to be used for any recron other than infor:atien, and al; settings of the adjusting bolt (31) should be Per the instruction manual (I-1115). ,g O es. - --*m-*e es a <a

7...-- C l i ( ) .r ; ll Y V, -,T "r. C.D. Carr.u..c n:. ej. January 13, 1970 f m e I hope the infor-.stion as written is cicar and as requested, but if further clarification or inferr-ation is required, please do not hesitate to contact fir. R. A. Wright, Service Manager or this writer. Very truly yours, CROSBY VALVE & GAGE COMPA'."t ces V.L. Heine Mm R.A. Wright p R.J. Martin P.F. Black M.A. Gaffin Asst. Product Manascr - Power Industry RJM/lca e W e g g 4 .-f.*.... s, hg 3.. g i \\ l l 8 g. tyg(nggd49 m. .o ~. - -

m +mana.--- me-e,g J,, po Babcock &Wilcox % e,c.n.,,n nc,,uc P.O. Box 1260. Lyncheurg. va. 24505 Telephone:(804) 384 5111 March 2h, 1978 SCM #352 620-001h 12B28 T3.3.1 01-020k-00 s w - Mr. T. D. Murray, Station Superintendent Davis-3 esse Nuclear Pcver Statica 5501 North State Reute #2 Oak Harbor, Ohio h3hh9 1

Subject:

Adjustment of Solenoid Adjusting Bolt en Pressurizer Power Relief Velve RC2A

Reference:

Crosby Style HPV-SN Solenoid Pilot Operated Relief Valve, "Insta11atien, Operating and Maintenance In-struction No. I 1115",B&~J #01-020h-00

Dear Terry:

'Ihe referenced instruction =anual pertains tc the pressuricer power relief valve R02A. Sectica h of the -- uci describes the testing and adjust =ent procedure for the valve, while section 4. 2 pertains to adjustments for Proper pilot valve actuation. ~ A critical adjust =ent is that described in step h.2.2.2, Setting of the Adjusting Bolt (P/3 31). All adjust =ents should be =ade per the instructicn snanual, however, proper adjustment of the solenoid adjustment bolt can be further checkec as fellevs: Move the scienoid plu.cer to *ull streke by pushing to the =axi=u= position. The Disc Actuator Pilot Valve (19) vill be depressed by the adjusting bolt (31) with the plunger in this position. If the adjusting bolt (31) were to be backed off a distance of approximate-Jy 5/32" (which eculd be acec pliched by allering the plunger to drop frc= its full upward position), the adjusting bolt (31) should be just beginning to ~*e contact with the dice cetuator pilot valve (19). Should the condition prevail, with the ndjucting bolt (31) =aking contac: vith, or 1: =oving the disc pilot velve (19) belev the free position, the adjustr.ent is not correct and should be re-set per instructica I-1115, Fr.rn. h.2.2.2. .L I Th. D'v eck t. WA, ccmr my i E ! e!v.as Igg a m e- -

  • sus se..

4

i I Q) Babcock &Wilcox SOM #352 620-0014 March 24, 1978 Pa6e 2 Installation and adjust =ent of the pcver relief valve was perfor=ed with i a Crosby service representative. The valve operated properly when tested 4-aiic Q c.f:er instEn:1:n, and has operated properly during certain RCS transients. It is ree::=:r.ded that the "P.irther checks" en the solenoid adjust =ent bolt stated above be included in the appropriate =aintenance procedures for the power relief valve RC2A to =ini= ice any =isadjust=ents that may be overlooked. I* you have any questions, please advise. I (L Yours truly, ( I d A Fred R. Faist Site Operations Manager FRF:nif l cc: 'd. E. Spangler J. A. Lauer R. L. Pittman R. J. Finnin D. A. Lee J. S. Grant, TICo E. C. Novak, TECo C. R. De=eck, TECo J. G. Evans, TECo B. R. Beyer, TZCo R. A. Brown, TECo J. P. Hartigan, Jr., TECo J. D. Lenardsen, TICo R. E. Blen:henc, TICo %,, ;gg b u dI

  • '~

O e O

  • @M e

e-+4s4emen e.=,g,.g, p g., g g er e}}

Retrieved from "https://kanterella.com/w/index.php?title=ML19322C574&oldid=4776399"