Similar Documents at Crane |
|---|
|
Text
ELDERT P. EPLER
)
- "lCLEAR SY5f tfA5 CONSUI. TANT 782 FLCRIDA AvtNUE REG 3/E0
+
l CAX RIDGE,T(*#dt55tE 37830 C Y~ O8 V'
+
d
'sw"
~}
, 7 SEP !
P,,i 12 gn
+
Aug 30 1997 u.s. wr'r -
,i
- -. M.
..,d ADylSct,;. -
00 unhC TCR T..,-l ;'jl,fc$
h
\\t}m }{gyy' Elet/vd.a l Syslent s, O T.Salscomm?ldee chniyma n
-w.,
n Four recen/ eveni.s ho<e revi/cd inle/e.il-k a
%Yh problem of Icng.sh>ndin I.
Arkansa s Piw er and Lig hd is app eold> q
~
~Q
.lhe Na c. 3 la K Por,1, oi, 2 0 eo n ce<ning.h e
$'h clo la hink bedwee>> -lhe fo<e Praleclidn Calculalc/ c,nd Jhe plon/ tempude/. // is lhd
)h JJnfl pasih6n./ha-l Jhc da~la /dik com,vomisd
-lhe N> dependence c/ Jhe pro-lec/kn.sys-/ern.
k
- 2. fn a. recen] }effe/.T jackled oul -lhal Jhe
-fa ilv v e o f
- a. d.c. bus tuoulr} cav3e impair'mei 0 l of residual heal removal scjsl con and n / Jhe sn>n c -lnne ca v.s e a s crc > m whh h in svin, toouId to v.se d.c.1-o be needed le/ residua /
hea d ren> ova I,
/n a recenl evenl nl 7'hree iWie.Tsland oll e
h lov( nev-Iron //vx power level chonnels we>
miscaI; bra-led by 8to/oyo for an unspecilie<
c lenc7lh al Hrne os a resull al h>e (nile,c.
f
. n single insdruniel>l -lhal """id"d doi" *'
I y
lh e Jhenn.a i power tonipuler calcula-Id>n, w
[jg g
.,8.001.170 r
~.
O
w
,y
.f 1,
Al zion in a receni even h du,nine A nals f
9
- f inserled />>lo Jhe. >yslens los les/. disa hied Ijj shoved. sensors Lo/ pro-lec-/kn and condral, W
R.s a resull Jhe vessel wales /erel wa s lowe>m by Jhe condvol, Ehrle ad lhe some Jane Jhe
_5 prodec lian acjoin.5) lhe ereil was rksahler.),
h 1
\\
Eae11 of /ke4q ecmes vnt}e/ //>e lieadii)g aJ Jepovadan cl Proleclan and Conl
]ished mant c;envs aya dunhq ion-frc I wa s of Jhc IA TIL, t<,h:2K; wa s lh e Sc<
lhe desi)n y:
oi n il L tun.s. l=ce 4ha J reoc Joy a. hiyh p er/crman z
.l potver leve I condvoller' wa s appidd evhicis wa.s capol>le of very os-l response. A lo.7lvve of Jhe l
?
conj <c.Ile>' eduld pud Jhe veaclav on a severe pop Inyk perlonnan
'1 ex<uvston and for Jhn l reason n.
app ied.
A.s a onnirnun,
'$j p<o fecdion st;slem tuas l
4he projecdicn stjslem tuovld be required lo prcl T
n g o insi a n t, even) which inig hl be ca vsed by /ntia
[
i o 1 J h e c onl<c l.
// wn.1 perdeclly o livio u.s th a 1 Jh su;slenss n>vsI be complelel 3 era < ale anniIndeped y
facIv<c ol holh as Jhe re.svil oJ a single evend wol J
be ihdolera ble.
.y J
A
M The p<incip e oI sepava han w a s e le o ile togico I onJ l
h
. sound and condawed k he o,> plied k onNL syslems
/)bo ul 19So o nolh er imp c </a ni reason k/ sepa ra Jan g
rnade on apperance.
.1 T}
nn in-p;Ie expeninen) was presenled % re view-
])}
uihiclt p ropo.s ed k use a sing /e &>slrumen d l'olh I-c/
dala coiteclan and 10/ p<olecJan o1 Jhe experiment and Jh e reoc lor.
- h hi h degree c/ occu/ ace g
was h
desired kr Jhc dala. to//eclii>n ubich wov/d re7 vite
]
_ freq uen) en la'h <a Ito n al Jhe ins-Irumenl Dwing chhbralan 14 woulol be dn connecled -I-<cm Jh e h
projeclG'e leerlure in' c< der nol k scram J h e rea clor',
j To en l, b ra le Jh e, recordo v door evavS be cyoned uhre.]t
]
opero W wo uld diuonnec) Jhe scram ha-lu/e and a J I
J h e s o m e li:v e.sla r/ n Jiiner. 7~he ope /a k/ wo v/d as 4
n resu ll b e a llo u.ie,} n lan iled a mo u n d o l Ji;n e k/
J
.)
cakbro! ion tv' d h l h e experimen) and )he~ reo clo/
)
unp<clec led. closkg Jh c doo < evo vid reslo<e Jh e jJ p,o Iec-lion.
g
// was imniediblely clea / Jhn l in u.sinq lhe some
.}
ins)<umend, or.sel of 'lnricumenls, k/ holh kncJidns.
)
Jne p<alecla n wo vid be deg raded k o b)nin n et u,o ce j
loi Inc c xpri,nen),which u,a s.toJoll unneeded 4/
j prolechin,. we.shcuid be q<oleful k )he cypn:nenle/ h/
recogniznig ine st.;ntlic.n nce of Jh, s a,id jeveja,
, jg e.,,
ih U
In 19se an even) al /178E 3 fu<lhe/ tonfitined lhe hy impo< lance o / sepa en libn, a se) oJ Jhree lont2a />bn lT chnrnhers served hoIh Ihe pro leclion and tonlvol.rys) enc p ].s o in e J ian e R. c. nc1 s e it il ers w er'e in s er}er) in J h e ehaJn ho< power supp) e irc u,'is ahich ko;)<e>lan)In liln,Ied 4he availn hle curren) Ic on ninovsil ksu(ltisn TN lo produc e a sc rom. JJ is no d kn o wn whelhev Jhn is'IJ er wa.s s'nJended lo irnpro <e ]he porkemane e o f Jh e projecli6n or of Jh'e con-lecl. In eilher cose lhe (,'ller li;n:ler) Jhe tur<enJ Jhe<eb y
o using Jh e con /rollev k.ne c
y hw power level a nd duk[vji wih dyn to red.s k, In c rense Jh e pw ev. Al -lhe soine Jil,,e lhe p<clec />6n n i s o.s a w J h e lo w powe.1 tevr) and did nolhz'ng. As resu ll co<e m e]J inq occ u,,ed.
~
~
~
i a
f f
rhe a bo<c illus)<nles Jhc need k/ separalibn k it prer enJ a conm>on mode forlue V<oin tous4 boil 9
4(
p,cleclibn a nd ccn-IroI de Jn,'I, /) bore oll lhe eonnnon mode lo,'lvre mvs} noI resv/)
frono Irnprovemenis aioolo
)
k t he con 4rol syslem ulu'ch n ovld co use forla<e k p<oJecd.
h 18 nc su..d s a e e u, nad<cs- ) h c,<. uem u m
,.h
$nlls in Or t n)j1GYl'aJJ YCSf et,. The 3nHje kev)N e3 n]O v{
f he used k< boIh pro leclion onel !calvoI prov;<1ine "dho g
remaining redundnal p<clecikn channels shall be inps.
p@@lLGEn@gMQ
~
~
i.
E"
f hl) -
~
f
- rovidnig he p<oleclive aclihn even when degendcd l
o p
by a jecond _rn ndoni lot lv re.* yhi s,, osibo n wa s adoji lo act o n>oda le indusl<
proclic e wh.ere Ine soine deviu h
toy e, w er e in<ovioblq used W bolh in ko o J faut i
.h p<olecJicn and con-l<ol As a resv)) p<clecl:6n is p<o vh
~
ho s ner* / beeri a. p<dslee i
ognins) ra ndom lativre, ahici, e
l c nd na p<oIcel>'on is pro vided o f a rns I raintr>on nr o de
)
l o,'Iv r e w W c h i s th e; real problern.
i
(
The C!l 6lt lco k. re[vg e behihd Jhc s)se}le>/ cl Z EEE 27 in Jf e O h lh C f rohe*l) n'idn ton lOinecl in ADD Jlnndove lh C / (, ~ l a /n Jh e juirno <
proIecl ion stjs/em -lhe.Sn m e i
ionit.a l1b n c hn rn hees evere us ed Jor< bolh projeclibn and (o ndroI Th e 'dite<.se" soc 6 ndo <
sysiem nI.so m es.svitj j
n e v]> on flux hy m en n.s o J.lraslon ecun dev3, F~c / eo c k
- 'l clinnoel ))eIh Jhe iho,n bor.s and counde<s eve <e movsled sin 9 )e modein 1./ hJcck whic]y couId bocome
^
L ehind et 0
.l conlo mina f ed a nd n ) J h e so m e Mn e in vse J h e k s'lu
'.G,
e l t h e c o n J ru o nd solh proleelibn sydem.
{)
_Neilher su,.sdein condniered x Irv1 d> Verse -lh ermo i j
^
power measuremend Jr, prodeci ctg ains) 4)as e<cnl.
The EY b' l } !l 0 V $ (# ))/Gf Ul}$
ro y!)p)[f Vj f,$
hf jA H),
f as)<v.nen ts Jc < holir p<olecHon an<l tonl<ol. This p<ach na s challewj ed in > <in, I)v ) tieca us e e l.In c, in g e o,n c..,1 g
es s. u e, y,
u,,e,,,1c n, 7..e,
is he - o de w naama 3
I W
}f *
^
correcliin. The kilowi,,3 however is con /nme,) in iny E
Jo n '?.1, l'? t 1
/elle r h., th e A C RSa j$
'h.kk
" 7he us e o f Jhe sa n> e o r i<}enlic a l b al.separo le I
egviposenJ Jor praleclibn rind ton,lvesI -lends lo degrod sM lhe proleclion funclibn and al Jhe some ldne pr Jhe v.se of ditenll< in conirof and prolecliin, 7he vst.
needed to
}f of separole and cliterse.syslears is choil3 l) obinin lhe requi/c<} performance.
.T4 is Jhc curren d pra c lic e in PvvR s l-<>
cw j
uor>
ou v eran ce al low oil sy.slem leddown flow o rr-ind>ta hbn ol h pressuriter /evel.
77hus a 2pv< ov.s
'F pressv< iter leve.1 witI be Ihe to use oJ ace /pressusu
~., ;
lhe.s y.slem, /n Jhrs L' ail o) s1lvadidh rhire l-in lornm Jib n i>
con d rn dte { oyc, <o7<ecI opero k < <e.s,>e
"'}
ca nn al t> e co unleof on.,
i
// is concluded on Jhe basis of the o.ssumed
.?
h>lern ble.fregueney ol uncondnined excursks an
.x a
t i
i eslAnn leil aseursto n ra les, Jho ) en3-!:sg lethnigues o re a de9vo 1e -lo produ<e proIecd16n fendu<e.1 z'~
.so lis In clo r k< Jhe in !requ en I pn'mo e ru,1 iv < e, J duni nad diverse rentlac proleclibn.st; den >s will se required, and 3due all proletlire Seniv<es are ol nuore,innl in /nclure jars hn lal,'l.,.inleroelian s helwe 5
3
.g prolochbn on,I co>,Jrol mus/ he minimitcd."
P
-s
o
^
W f
Nihoup he "syv<ious inda.n lidn 01 low pre.ssu,ireg fi}
/erel will be Ine ca v.se o J.o rerpr,es.s u r r2. m t h e s s.L,,,;"
efh q
y wos seen n.s a. po.ssibic resull o / vsa ih e som e devites Q
.for pro jeclian and condrel, t-l wo s ng) krseen tha.I o
- y.
- o. si,n,'l a r c on<hlih n c o ulil be h<o ui; h I a bo vJ sq Jhe gj v.se oJ duin,n n'q n o ls, o.s wo a J h e co s e e J t>'o n w
.g%
9 krpIq a.s resyit c.l he wea le re7vieeinen I, a f n.
}h%}
I EEE 17 <<,./h e prinerp le o I sej> ova Jisn />a-s noco d oc en era led Jo no in o <e % n ike vse oJ h}4I p.pers kii as eviden c e s / <encern, nodorn ' solid slo ie devhes o<e w
Q sv.s c ep)a b le to. siro 3 vallo <, es ud,,<eco ulen s o <e k Ico>,
k')rons>n;4 oil ugnals OLeen paJecliin ond' androI h,
{l5 19 h1 p:pe<s. /n olde,e sy>Jes>s Jhe convenJidnoI relocis o~
i sw:4c he5 were avlequnie a.1 h ola J> h dev'i< es, A/o In tlvre q
'f
>s known ere v !, ha ve o u v v<cd l>rco use a) lhn pnllem h
n li h oug h rl n no w re c e'vo'n 3o flin /to*n 10 lhe eve fusion el
?
th e rea l prol> lent.i, ka lhe nio Me/ o f Jh e da le I,u k be keen Jhe cpes ans In f
ha pianj con,pvJ e/, z ha d no) Io k e,, a postlisn in opp ost-14 f
I1 is indee<1 Jrve Jsai signols -1o h e n J,c,,, )ne p,oJoc1,sn p
,,.c 4. u c,i,n s < -,,a, ~ o, a,, a e - a a,,
e,,h o m i,,1 sa leh',
n>ere is iY o ) <o ats e lh e eent p<n Jho 1 Is,e n
d.y sorct, ivnsan
<cuu se acknaa s no ns n os an,:y Jo hordda re, or.solJuvave l
in~ end d i I,nprore h r 9 val:L e
n
.)
--mem-,
mp w--
+-am g,
--w-
-w a v
e e
h : al lhe da k fra n sm1Hed k Jh e f n al taanfulev-
/1 i
hh woul,) seem rensona ble Jho ) sv;4n ue pretoudibns could @
Q inuon to p<even) Ihis a ad inn) Jhe advandare.s nagM h
o vJ svel<j h ih c dis adva n dof eJa "g
s.t Recen) evenh howerev' ho<e convinced me. Jh.n ) we a v
- 4hN
.Ql yidualls w 4hcol prodeclidn againd Jhe ill ellecis a J (NI
}nlerconn ec Jin 1h e C P c.s n nd Jh e p an) tampole/, Th e l
so /'Nie uncle <slood J)w) w
-frve nn lurc 6l lhe jMblem i 5 n
nol be assu red al n ra n dee/ v n de de-lense,
we o re M
ca n
.p l
n)
,lhe m eyc o1 a few lu}}, }
sfecioI(2.ed ccinpu}e/
fecluniun n s Q osso rnne es lis) horrn.lu l inlevock 5n s util no) resul.); we ha ve no assura nc e Jxa) Jhey ove pc7voihJea udIr J Le 4<v e no lure al.Ih e pro bleno.Thn is ho<ne cul_
n b
Ihe LIIow tru$ Jak on /,cm lhe a Ila cb m o n I k I he lotle./
y J. D. l'hillq s k R n oy <}, 2/29)'77.
ds 4
]
. The do Ir Jin)< s />elw een jhe a y an,ll P D l'alcuin Icy' 3 slen) and Ihe pinn) compv/e/,sn }{sJ
-lh e reij virem en h 9
.{ f a l C DC 11 and I EE E 27 7-/ 97/,.5ech an 1 7, rec;o rr.)inq 1
lndefendeme oJ profeclibn sydems. IEEE 279 re<juives Jhad Jhe 4ran.sunssion al signols fro >n Jhe predechan sy.ile>9
~
he Jhrough isolahan devic es, o,,J.'ca l i.s ola ke.s a l s olh j.}
.sendshq a nd receiri ends oJ Jhe pion) comp Je/ dala
.f linI< s meel i ho <eguireminJ. Ti,ese ocJrca I isolo In<s ense,e hoJ no c res,-ye ereid nJ Jh e po,,J co,npukna,,
j eg<n de m
~
=r,m,,e..w www. -- +--.
e.
.--,a.
e,,
.w e,m mm-m e-n
- + -
~ - -
--~m
m y$}
the p<clecDon syslem. coc n reguias.sepo<alisn k
of pro-leclion and conlic/ sys/ ems lo lhe eden) Jhal' toilvie cv <emoval of common epymeal leaves lidacf g)}i l
sufGeknl epApmen) la meel oilp<clec/ ion.sys/em M
re9uiremenh This patograph provides any>le evidenic -!^a i eb) is conlemplaled la ensv<e o7ains) more f[
no i
sui,J Je inievaclions suc h a.s ha rmluI o lletaLs
'R h
k fue c Pcs ' hardwave, whieh rni k) be inocle in 1
n it o<de/ k enho>>ce Jhe poi:/
o f daia Ivamm'sfled f
to Jn e pland compaler.
0 h
ct/h o v vendors will shull lo; y
e p<oposihg si b
ff
.sysdems having similo/ p<o blems. T p<cpose Jhal
?
he nyplic.onl be reyvivc,1 Jo provide evidenee Jha L
.:i peco ulans sey ond he reyvitemenk of ]EEE z71 or,4 CDC 24 have been tjiven tonsId era lJon -
1 i.>
l
'1
't j
- i
-l W
,,.,,,,,,,.,,,e
,,,}}
