ML19221A623
| ML19221A623 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/21/1979 |
| From: | BILLINGS ENERGY CORP. |
| To: | |
| References | |
| OLS-790521, NUDOCS 7905230461 | |
| Download: ML19221A623 (9) | |
Text
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Reactor Simulation Tests Performed By Billings F.norgy Corporation 1
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. C....
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Current as of April,10,.'1579.
All tests described below l
.~
are. performed or will be performed on the Reactor Simulator
~
(Figure 1).
s.
TEST
'A April 6. 1979 The system was pressurized to 1000 psig (nooinal) and he ted to 280 F using a primary heating clament simulating the core and a secondary heating elament around the pipe leg.
A band ' heater 'on the steam generator was also used'.
~
During. test, the sacendary heater was disconnected.. The I
s'
.~
primary heate'r was 'used' to' maintain 280 F.
This heating element was. controlled manually in an on/off fa.shion.
The data plot ,
~
y
. "..shows pressure ripples that are coi'ncident with the temperz*nre i
s
{
.f
\\-
\\.
- _ Wariatich' associated with.the heating cycle.
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Water was dr' awn' frem thtase of the reactor vessel in an
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e s
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~
amoun't that-produced approximately.:100 psi pressure drops.
The
,g.
.t
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_}
7,,.,
water sa=ple-passed.,through a heat, exchanger in an ica bath to
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coo 1* prior to measurements The mean temperature of t!be water existing in the heat' exchanger was.86 P.
The volume'o'f water t
J. k* e -
at s,
- i..- :.
was measured directly with grapuated. glassware. '
=
. Py., -
The plot,o_f Test.' - A shows graphically that th( water van *
> g..-
a
.g.,
.. _ ;., not saturated with hg..g. en until: a pressure of app 0 4==tely...
c,.,
. g..
g..,,..
':,300 psig was obtained.' ' At this po,imit a, definite ppwsiure re-. -Q 7 ' l b_
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.=.
's
,., 1 ~~l
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' bound,. characteristic..bf saturatioc. w-. *-w, f was ' observdd.n.. :The. f act i
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- 1.,.,1 e
~.
n.
.....,.an, r..
m./'Q that the, oolution v.ss not%turgtad at.clooO peig was _ doe to
..n
~ scee procWal difficulyes ketEnized'in setting up for
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.bb 0$0.
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'7 90s D O VR k
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,..g i,,
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3..
7 s '%"...
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,... :sts e
this first test.
i The data shows, however, that 3-
- cordance
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g,(.
j
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,.With the l'aboratory pressure drop testsj the pressure at
- 'N %
. 'v.hich saturation occurs can be determined by wabMng for u.
e pressure. rebound af ter an aliquot is extra'cted.
The hydrogen bubble volu:ne to system water volume ratio corresponded to 0.4 per cent at'300 psig.
By dropping the pressure further (to 100 peig)'the bubble volume grew to 6.5%.
I (Note that hydrogen bubble volume is inferred from measure nts of. water removal.
No correction has been made in the ula '
s
~
. tion for volume contraction of the. pressure vessels as pressure
'is decreased.- This effect will be examined in Test G.
i Test B April 9',
1979 l
Test B was performed similar to test A with the' exception
..s..
~
. that'the. core,sinulation heater was controlled via a variable 2I s.
.- T power transfor.ar rather than an on-off switch'.
As a result,.
U' k
s,-i-
.. the pressoro..r.ipple due..to beating variation was no longer in -
- kDW T
~. avidence. '
,, y.;.
r, w-
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c
. Step,'clianges in vessel pressure were again caused by.
I
-. ;taking incremental volu=es of water frem the'.b,ase of tbs reactor.
sD-s.
The plot of Tast B ahows pressure rabound ef ter, the first 4
.x c.
s.
,u,tincrement.of water was removed.
This indicates that. hydrogen -
?
. g-saturation was achieved at'a pressure [in' excess'of 1000 psig.
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.r s ~A-
'.t iceerdi$41y,. the" fraction of bubbli volume to kater system h-
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s
(;.,.
s',. -volume wasrruch greater thad 'in test' A'.
.,.....e.
At 30( g.p ig, for in-
-e
.., e.
d.
" stance, ' the bubble ' volume. compriiod ',9.55 % of.M6tal. systerm
.*[-
.x.
s s as compared with 0.4%.at the sama peecsure in'tast.A..
,gr.
L.
..rs aj.-
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l4. f g
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t
'[
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-3
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. c., y.;,..
-~
I 4
At.. the conclusion. of the test, the size of the bubble in the steam generator was measured by exhausting the 'g'as through" a heat exchanger and measuring the volume by displace =0!tne of k-I
\\.,,
water.
At rocm temperature and atmospheric pressure, reabsorpg 7
g tion of hydrogen in the displacement water.,was assumed sibl.
..The bubble at the top of the steam generator was obtainad by u
n
~ maintaining the final pressure with the pressurizar valve 'into
.n.
the system.
The valve' at the'. top of the steam generator was 2
e then opened slightly 4nd;,the fluid passed through th'b' heat
~f exchanger.
When, liquid was obtained, samplingwasdisenktinued.
i
- 7),* The5 as v[:ilune in the. steam generator adjustad to ' 280"r and.300',,.
9*
f s
- s.,,..s.
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psig, conditions existing at,the.end of the test, was very 4.-
.. - - w,
., a g
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small compared.tio. the hydrogen bubble contained '.in the ' total
,,f
- - system.
Of the total hydro 9en bubble, 964 existed in the reactor
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~
and 4 t in. the.. stean.gogetator.,-
- . a,, t _. '
n 7
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c l
,..,.s.-
,., [,,
Although~ t.hs stemn' generator As physically high'ar than the
._re' actor, thers.ar thr[tefef.fpcts that may contr to' to i-q ;'
^
t, t._
,s
= :, e v h,d'. hlacement'of thej major'.: portion of the 'bunble in-jths).. reactor..f,,
- s,.
.a
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. w,q
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Y',%. j e;.;... 3
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loca'lized 'prassure' dd,bp h- ~. ',;., @/G
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' These effe^ cts aMe relatsd'to 1)
- 7
-.t4..,...,
.1, if n.
-N.., e.,~ ~' the ' reactor; 2) dre,fergntia), removal; off hydrogfn3n. the.,-
^
_t
..,..i..,,s.
..,,.7.,.
t,
.e
.~
..s v.. -
s.
s-h r..
c.
z reacto Cdue to eat-effectN at.the core simulator:insater;- and.. -
i%,* ~ --.
- 3) sweeping actice of the,.twater flour which convtrets hydrogan'i;-
. s.,.
. -. m. t
-w
......~.;...-.... ~.
a.
3
' ; / st n.
- g.. +..
-. bubbles fraca the' staan geerator.to the reactor where they
=-
1,,,
166 052"!
7
. ' count.in the upper half volume above the exit port.
w..
.', i %. ".; y :
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ih D.
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W,
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y,
%st - C
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- I Eo test nado e.
Test - D April 9, 1979.
ss 1 4
Test'D was similar to test B with the except. ion that the e
water withdrawal rate was continuous.instead of periodic..:-
t Although the. water had been previously saturated with hydrogen, the hydrogen saturation pressure had decreased prior to start of test,. cm is evidenced by the data plot.
Bubble growth s
'w.as only 3% of the system water'voltaa.
e Test - E.Aprfi 9. 1979 -
c-Tha continuous,, sample method of Testi ti was rebested in Test
' E af te,r re-ests.mlishing hydrogen naturation at 1000 psig.
The s
y-
.r
.figure shows a much more dramatic growth of bubble size with g
- l Iy f
pressure decrease.
, e, '
As in all previous tests, the water temperature was held t-
~.
at 280 F.during'depressurization.
k
[
V"JF5"--v.sfirft W 1pril 9, 1979
'^
,,/.,'
... ~
., Test P was a repeat,.of test'. E with contirincus water removal.
The ~ only./ changentin'de was that the water was drawn l fred.,ah( p
...,; ~
.i at the. base'of the pressurizer instead.of sti b hn== of tha'..
4 y
.. b
.. reactor vassal.. This chango was auuin' to mo. ro closely minulate
.i
=
. p g..
z
.g.
7 the withdrawal ~'of water frem the_pressuritor and.also to ses,,
t.
f' C.,^ *.
2
[.,'
"P.5
.y%.
e
- . j.,,. if. A graatar percantage of *the hydroge,n buhble yo,.
uld "f ors,.in'd. '
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,,. r.
7
. y.
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z!,:t h,
. l, ?..p'..'
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thd.* steam generator.
,t
.,.:c Assulta-wers very si=4 Yar to tast' E.
A'a'lighp,1y greatarz
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l,...
. ?
.k M
n
. hydrogen bubble was created in' the.systes' a 2300 peilr~in test E.
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l The amount of hydrogen volusto present in'the than in test F.
l 166 053
7
- ~.
, ~s c.
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t
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steam generator was still asall in comparison to the t.otal 4
bubble size 1 indicating that the location of the water withdrawal t.
tap was not a significant factor.
A cross plot of bubble volu se vs syste:s pressure is
- 7
^
-given for runs A, B, E,'and F.
Gompk Test - G (Tet-i.c im W formed 4
~
Part is Using unsaturated water the system will be brought up to temperature while measuring delta p.
Pressurization above the boiling point will be accomf'.ished'by applying hydrogen to the pressurizer,.
t is assu:ned that tha. surface area of contact s
will be sufficiently small and the presuure sufficiently low
.that the ar.ount of hydrogen going into solution will be slight.
i Part 2:
The system will be depressurized as in Tests j
e,. A. '. '
,,D,.,,E, and F.
This run will establish the system volume decrease with pressure reductiosias the vessels. contract.
Measurement of', delta p will'also be'made to establish a>
a
,; 3
- w... referanco signal for; ;the c.on. dition of unsaturated water. l >
..A..
g.
'.'.i Test - B (Yet to 4:e performed) e w
i y
'In tost B the,, amount of hydrogen that enters the system
,^
will bi asamur45 'as' pressure'.is increased at constant t:supera-F,
.A
,y 4
tureof2tb*F.. E M an'.will be wit $1rawn[ frets a hydrogani,',,
- h...I (,
.,3
. y..
.. cylinder of known.y~olume and temperatufe,, Mass of hyd.v W.c
..r p.,'...
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m.
- . -^,9..
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,.. e
..; fue:9ved-frees the cy)inder will be. calculated f.z:pm the pressuro....
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c,.k..;
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c
. g. g,lg ;'
g.-
p
, Qm of thelcylindar Jaa it aerptias.
r
.8
' n ' - daturated' water 'will be obtained at several per' lures by"'. -
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_. q s
(
pressurizing 'and observing preasure.atability.
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s.
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v ont of delta;p will be made a.,t each saturation step
, Maasure a,
c.
.c to ces if a change in either flow dyna:2icsi water density, or noise can be ob served.
Test - I
_c M -perforr.ed)-
m-
.,, Af ter achieving a saturated sointion at 1000. psig' and 2"80 F, t, '.;.,J.
. the:syst m will be. copped in ta=perature and pressure in
?,..
separata steps.^s s
Part ~1 will be a drop in ta=perature from 200 F to 130 F
~
r at constant pressure.of 100.;psig.
Pressure will be maintained l
^
~
y
_ ' +,e y-constant througif use ch the pre =surizer'as needed.
The volume
'~
p
.. s a
.,.of water in the pr.essurizer before and after test will be
~
W x.
o b t & "i.
N-m.. w.'
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A.
.Y'.
- y. .. # -
~
r m
r Pa.rt 2 will.<be' a co.a errt,Druous pressure drop from 1000 '.
e
~~
.w w,
y...
_ p
- 4.,,
q
-i:
4-psig to 300.piig by water prawal frota.the.s/ stas.
Te=perature.
.'p. j ur n
,.I will be hs1Fconstant n't'. 3,00'F, g,..
- r..
4
,,.',../.
,, Maasureranti of ' del'ta p wf1I'be-taken 1.n.,both parts.
Thg
.7 peak to jeak.noiseievel'. o'f the delta p signa 1. hilITDepot6d ' ' Y
- ~
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- **' ' ~7
- q. f, <
T*%
,.,'. 'j on.a strip],. -1.
.i cbart-recordar2
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Test- -c (proposed topeat of Test 5 in order to perform ~ Test 4)
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m, e
,,w.s.
k 4.
r;
. +.....
- i,. r w
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M- _(fgep6 sed repeatipf.. Test,iITwith, reversal of the orderr. ""'$
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Tm
.p
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.' constant tsopera'ture pressure],raduction followed constant
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[ ' '.':y.pfessure ta:sperathre " reduction'.$ --
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