ML19308C027
| ML19308C027 | |
| Person / Time | |
|---|---|
| Site: | Crane |
| Issue date: | 09/14/1967 |
| From: | Dobel H BABCOCK & WILCOX CO. |
| To: | Montgomery D BABCOCK & WILCOX CO. |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8001170799 | |
| Download: ML19308C027 (3) | |
Text
1
)
arf L o
THIS DOCUMENT CONTAINS r
P0OR QUAUTY PAGES 3
.... p..
t
- u. c, s
s s
4
.t
=
- c
- p. p
- g r..., *.
.,.-. g.... %,.u 3,
,...,.a
.,... ~.
4.
a n._
m...
L..
- ..........,2 a.
...a.
pu....,. g., ~.. 3 c.,.,.,.. v..., e :. )
Ct..
tu.: ?..n ec.2:s:
~h' t !.
wy:n~.' =c 1.
t s
e
- s m.
rm - -- ;
e),.
y e...... n p.n,,..p.v...v.
-.. 5s s.......
.......m
., ~.
- s.... ;....,.y j. a v.c e m - e ut.. i.. g c.c. u,.s e i,. '
~
~
~~~
't E.-f. 2 (1)
Ietter rm J. S. C:-iten to 3. L'. r.. tr;;;e e f, c:,te.3 ry,cr.',y.- : 3, Iy',
Cub.1tet t "fre.:
-i; r itifer it.tyt ti:i g."
d (2) Le.tcr fre, J. C. Cerittu to J. H Terrier, drtei }*:.:ra 2, IM7, Id Jc:t:
- Free s,4.xiu:r irtet.ti<nt Eoc.:ir c.tr.te, '
i i
O) letter IIr: P. C.1:00 to I:. 7, Dckl, dt.tel.'ane 22, J357, f
CCJ:.rt: "ric:.iriter Ede t~ V:.1vec. '
l (M Te.tter ft~.. M. T. I' ml i c. D, k*. I'.'. rw-7, cc tM Jc.17 3, 1957, c
l L'c.t'f e:t s ' htat :r' r:r L. ~ety ':cive L.@ e;f es:,. ' '
l.
i L:f trt- : (h) J'.-Ove rc 0 07:*m ' ~'. '..h-t te 'r '.tell fr.t. h l* cr:ac.it: Ecl*.t.r vrl';
?. t',.t's r < ~~ --' ~' t hrr.e-v-" v.l. t - t :n <m h p-ir c 2 t af& vil re c e. L1,'ce' t;A '.*.1 cubstgarnt presr:riters. h c.ir.o re:t,-~ctsied the.t v2 tot ir.r.tr.11 r. pilct r.t'.va.ted j
rafc77 ve.1 e.
Enteeq.ter.t to the Trepter. tic: cf that ree: ::-rds.tica, vs h: to itr:W.
a letter of ir:tet to Ercreer Ind:::riec (P..r ell, E.r.ni..s, L ldere Divir.ica) to aj
- e. llc r th=a to procte'i with the develop-:::st of a half capacity 3X),000 lb/hr safety 1
valve.
4
/.ialtie.:!1 revie.r cf t% ct.*ety ce.1ve reirc :ct.t: b: be ta ex-.le'ed vit' in the 7: :t tw r :.;a ; c.: 1 the 7::70:2 cf t".!: re.-.r.rtr.d r..1: t o r;:.ccir.2 ti.c ceccletir : t uw.t-13 tr:a this r cviev.
i j
Os I.::cstt 17,1%7, U:szer:. Crrnen, Ced, M-rch -it, It:tt, Etever.:, end Tctle: :.:t t*,d. ire.: the b.c2e;rxrd trf citin; the pres:u-2 w.t.fety valva:. m pertir..t a
e
.i pcirts in thic r.ee'.1:y; r.ro sutrt.rit.ed, c.s re.11ov3:
s 1.
01:o P.d,0C0 n 'h c*c ::1'y is r r:11 frc.".e! r rb:r, in 1 *e.1 en c cae r: c-r,3 r. d v.it. cre-si s e Mcr.t rm ic
- s t i r, n
- wr. ual r*"r r >
cfft0*. from ta: 7.rtt?'.'ci:.*r r t y vr.lver., i t let*,1 ca t1 La.itir.1 prets.t.-lier r'.s : V:hr? cf T;3 ta, r :1 ic 1: e1 cn tb r::-i: a crp ;ttd T.'.nitive r.: _?r.ter co.rfitter.t.
It v:.: 7.n:.;r.1 en it:.; tt:m j
r0rt cent.itivo perr.:reter in C.: s.'.r.lycis 1:t:'k; t o cc.f erf ve.lve rce.:Irt;;:::- 1: the cri poir.t s're tL: LU a Trc, sre rec. der trip c.,i ir, thir. tr.:0ycim it vi.: r.stard to be c.t J reir t
v s
j Te, A trsarient irmiving c c:cp 3c.1 ene::';e fr n 1C0', to ed rewr ic I
.)
con = of the varet eJvi la c::cer.ticily W:.1 is ter:.s of orespecascre i
g i
proteet!on rc.Tairc ta17tc to tLe tremele:t (p:ritneel fellevi:e n
[
]
rytten bluh t while r.t fall pwcr.
In either of these trc:uients r n_ m. WW K
-- W3 i
_.-.....- -. ru. w.,. i....a... - - - -
- l, n
DTpWM Wn\\,
m a t
l 8001170 s
4
'-,..,,..,,,,,,.y.,_-
- m
,,,,r_-
- a...Z
,yn, e ye e ed.wh t.d.a " _ _ _ -..
.M=.-**
amer a,*1'"*..
Sm bees 4.e.me.i
=e wu.as w
al # essa.s e.
a
.._t L
- M e se o..
- * " ~ * * - -
o d
1 E
sw, s
2 l
the r.nr/ 1~1c:: rn--1N.i to prt e'r ?. rc*.etc.:- t:!i s i.th0 t ricm f
relin 08'/50 (-~
h.Q tbet.Ull:7 to r.::.lece t',1c rir:.7 f1Ct.- !c; Ic.:t t cc:r.is, W :.rrn;uee eo.: : ;c;,n.cd :4.ta pg 07
/.s r-ry 20::.1 in Ee1-rcme: (!), c:c inenit.;.na c; r4 r;kt cet'.L,*.1 t r.ht; n.1--. c n rc,m Lt., c;rt. 11:.,:
to L:' :CiritJ2y W c.rc tw:1s c ;,1mg t
j 1':dr;- thr' 1tr. t
.h !2 l :-z-L, } r tc, e :1::, y--t*, tM llc 1:Ther Lir::.< rci tM j
c4c;r.; cf the &m r:. 2.ir.7
- r.. ev f., t '. r e ce-.:.c ci.23 ; em ese: 1:. Ec;cze:cs i
3
(.23 EM (M, c:
P Lu.14 =
.,3 e',n :* '-- ? c:? di?r/; cal-c -
-a Ob :;t sicao v;M: r ;.r / y,.1;$ V:,cing, 11.
5 I
- t. L. EWun c' rtd 1::o e
. r d ei.c. e i r.c-e se re ;.0s j
tcCa?cdir.; hic :.marir:.vi tri.h re.cc:y v:.tvr to t'.n c nvectic,nt.',. utiilty in.tatry.
iba 1.cy Otentice.: ir.vehet vcie:
f t
1.
Ces t he tlarew'*cy w.We Lt. lct.tif1ca in vies cf tro fe. tuert 7
A.
CC r: Y.J.70 3c ht,4 i' C115Ltl* usicca it fiNt lifer, cf.1 th': tre.r.Ji::tc c pr. ;ca to c r.re vdve tdico cre unlitely.
b.
i.::2 7:t.bc.ilt'.-
. ; t c. ctfcif Tc.Wa VIU ai Sh opc tccr S
it. M00 c is t.ll, '. :c, t -1: jutificeth.3 for it thr:3
.L
.i V:.; %t.l u 4:c.s a f, c;ict.
{
2.
In thre c::7 tolff. l r'itiev.in f:r the pilz.0 c:tyr.t:1 c f:ty 7:.1 vet It tr.* C ven11-/ ccreed thr.t r. thre-vc:t vc.lvo ces.L1 r.;; be &.:stifici ja vie ; c '
)'
the r.tova fcetort. In ciiitica, it cppea.rct1 that the prir.cipd reczm fe:-
j c:*:16ering a r.ilot t.ctuated v nte are:
i r
j 2
Its ir.el:.cica de,es g?=1t a reccetien in r-e;' fice re;ainr::st.
g t
i 2.
It r-iiths the pirat in ecse:tidly the cc a fecv. c.2 p ::cated
(
in th Iccles tr.1 renccre::t pre.v in.
1 3.
Iilct c t;n tci v:,1w s r:.re fc=ilier c a tic:frc.ble c,:Wrt<strees i
on & thility phnt red, ter.ce, hrve cza c:.n.ctin:; sc-41
?
j
&:: ciditic0al pht thic'.2 v.a not brc'.3dit cat in the previva-ly cent c:.r.d dir.e ratir. s a
f u tt:0 the ces er c pil;t t. casted vrJve doc: red.m Os vs.*.her recro c70.tttirr:
t1~a reviru.*c'.: ;41c'1 r~ ~t c.hrr.r$ et k :'-oc:$ La t% 7'.antirer EP t,y racc}
i.e., nn clar;i to full c;ca ym;itica is Icxr rc-ac.r.1c.
In vie-s of th; c' :n, ve ero revhhg c tr re:ere.te:tien teccc.ited in re.r:se.co (4),
i It ir. r.c t r ee:c.t -A ;.1 ttct n 2: dl tvo hdf cr* nw r'~
- 10r-hu crie v2.Wc:
cf.S c. pt t it.1 er ::'.ty pilot r.ctutte::1 valv: vith I'.) c:neit.tcl citext v 1";. -i^rd.c vill gr.:.it in.t Cd. tics of n rz'.11cr sp;r;; iciva rr.,; cyct.;r ins:14 in C a r.N.1:u.rl:.:r.
3
/e en r.ifitics to efritt cho c;:c.y c'.i pilot octent ca vc. ires, l't is svr.ntel ths).
rc ec:4 fact thcts tes cett,Kntna cm toin;; es~;pleccate/ to trth o'l'er U' - rh t.:
cf.s or the othc? cct0/. ccue:1vv.b1f clone Ichile trcasic:t; cycr;rcasm prctecties i
s, I
t i
O M~' n. e'..
s o
w a :L u m-
.a ii 3
g -
n g
I t
4
'esamesw ir,.s,ans=e-*--wme s-aw tmu,.f-n r-+c4 _
(:
e
.o-0 o.
4
-Q
'm J l
3
/.i s.
?
g or t':0 V 2 cc:per. intr. catt hr 117n thic bty t-e%*r.
f.: r. r%.ce s. tert r :. !.e 11.*:r o l
t t btlieve tv ef. c. del h: 11e t.U. rc: nl ce hich17 I tra-Ale trent*J ar.te vity. r? r.-
l tnd it: Its: If. 4.;r 1 ::.1: v:c vi:h the pilct c t :r,ta, v.1ve.
It s.v;.2d te a c;:rM e
}
if thir, rt:Tr *Si L: Ifr.e c ria te ry,1h.1 to tha tr.; -ic.'.r.
en e:te.d VLe t Ic.;;a C.3 i
4
' n r 1:'.1~r t re r):': te: V:t (:e to the t:.11 cr =2 c: *.12 " cycl * *. f2 tr.5..e cc. rr: aux I
. 4 tSie rhv&, t.:t be t. rt re..c i seter in u.it!..Mh (c:idir.r. h~. t9 cr r rer-Irv 3 70trctica al*y thrt.t.11 to rpti tc.w:r. the tiry tai pihL cr.!,=r tr./. vt.11 c:2.
1
/ D of thic t'r.?, we L ve to elcer defiritica t,f the r:- " cr re.fc'cr vc1xc re :tre-n r.t t, 1.tootc0 ter tr:ntic.tr. the., less t*.m f ->r T.-
r t m t -f m;.
17 c w c4 t.his j
lette, Ibecrc. Ihacr.cr.ny ri/cr Cievor a.re t ce; tested:
j 1.
To c= firm th.t til ruch trraelents heve lets rtrism merpeer.ure T2tt?ctics rcph;.nnt,: thsa the 1W: pu p r.its:. tics, or 2
To d': fine ths evc:j cscure protecties rep.f rene::tt, fer Ic.:e t*. :.
to':r :sm c7 crc'!.cs, cr 4
4i 3.
To inficcte cca this type of fr.itreadicci vill te cvr.1161c,
=
6 f.st fdt:; that the c. pror.i crtLir.td r.Mw ineo:?:: :.*.!
.e. t-o Lair cc,:-ity cede 1j v:17ec cnA c. pilot a.ct2.z:c.1 velve vill be cce< c;;t.no, va it.ttr.$ t.a ;.:cas.1 to l
. C ' rdep r:recifica. tic.ac fe: tLe pilct r.:';a.te.1 n.?- e t:u to C:.lcLe res!.c c..:ilectics 1
cr t?.e tirte-rey - elte, ns.tr c~---".tc tr.ed to r;gre:Leted en ti.ic lttte:.
1
?
T.iDt212:57.
I 1
1i es: JWerchent j
i p Tsea r-t l'02.rtt I
TC cic-i
'C-t.41yny d
. i j
0=:treet li:pertrent (5) fw.h Y,. h i
rufen 1
- -r' %
CIhberf C3tevens 1
m iltc4
(;Eucyt.srn - Esrberten d
n i
i 1
i 4
l O
l It D*fD
%D'W N l;
A M NW
=
6
.4 1
0 5
4 9 -
d
^
""*M
'e,.
,,e,
.--*=----s-em--.===.-
,..-