Critic a lity b e nc hma rk o f the Mo lte n Sa lt Re a c to r E - - PowerPoint PPT Presentation

critic a lity b e nc hma rk o f the mo lte n sa lt re a c
SMART_READER_LITE
LIVE PREVIEW

Critic a lity b e nc hma rk o f the Mo lte n Sa lt Re a c to r E - - PowerPoint PPT Presentation

Critic a lity b e nc hma rk o f the Mo lte n Sa lt Re a c to r E xpe rime nt Ma ssimilia no F ra to ni | Unive rsity o f Ca lifo rnia , Be rke le y Mo lte n Sa lt Re a c to r Wo rksho p 2017 | K e y T e c hno lo g y a nd Sa fe ty I ssue s


slide-1
SLIDE 1

Critic a lity b e nc hma rk o f the Mo lte n Sa lt Re a c to r E xpe rime nt

Ma ssimilia no F ra to ni | Unive rsity o f Ca lifo rnia , Be rke le y

Mo lte n Sa lt Re a c to r Wo rksho p 2017 | K e y T e c hno lo g y a nd Sa fe ty I ssue s fo r MSRs Oc to b e r 3, 2017

slide-2
SLIDE 2

A pe e r-re vie we d re a c to r physic s b e nc hma rk fo r mo lte n sa lt te c hno lo g ie s is unde r de ve lo pme nt

¡ DOE

NE a wa rde d a n NE UP to UC Be rke le y, in c o lla b o ra tio n with ORNL a nd the Gre no b le I nstitute o f T e c hno lo g y (F ra nc e ), to c re a te a n MSRE b e nc hma rk (Oc to b e r 2016)

¡ T

he ta rg e t is to c re a te a b e nc hma rk fo r the I nte rna tio na l Re a c to r Physic s Be nc hma rk E xpe rime nt E va lua tio n Pro je c t (I RPhE P) ha ndb o o k

¡ pe e r-re vie we d se t o f re a c to r physic s-re la te d inte g ra l

da ta

¡ use d b y re a c to r de sig ne rs to va lida te a na lytic a l to o ls

fo r a dva nc e d re a c to rs

¡ use d b y sa fe ty a na lysts to e sta b lish the sa fe ty b a sis fo r

  • pe ra tio n o f a dva nc e d re a c to rs
slide-3
SLIDE 3

T he b e nc hma rk is b a se d o n a se rie s o f sta rt-up ze ro -po we r e xpe rime nts (June 1965)

¡ An initia l c ritic a lity e xp e rime nt me a sure d the minimum a mo unt o f 235U ne e d e d

to re a c h c ritic a lity

¡ Me a sure me nts o f the d iffe re ntia l wo rth o f o ne c o ntro l ro d a s a func tio n o f

p o sitio n with sta tio na ry a nd c irc ula ting sa lt

¡ Me a sure me nts o f the inte g ra l wo rth o f va rio us c o ntro l ro d c o nfig ura tio ns ¡ Critic a lity c o nfig ura tio ns o b ta ine d c ha ng ing 235U c o nc e ntra tio n a nd c o ntro l

ro d p o sitio ns;

¡ Me a sure me nts with sta tio na ry a nd c irc ula ting sa lt c o nd itio ns ¡ Me a sure me nt o f the who le c o re iso the rma l te mp e ra ture re a c tivity c o e ffic ie nt ¡ Me a sure me nt o f the p re ssure re a c tivity c o e ffic ie nt

slide-4
SLIDE 4

T he b e nc hma rk is b a se d o n a se rie s o f sta rt-up ze ro -po we r e xpe rime nts (June 1965)

¡ An initia l c ritic a lity e xp e rime nt me a sure d the minimum a mo unt o f 235U ne e d e d

to re a c h c ritic a lity

¡ Me a sure me nts o f the d iffe re ntia l wo rth o f o ne c o ntro l ro d a s a func tio n o f

p o sitio n with sta tio na ry a nd c irc ula ting sa lt

¡ Me a sure me nts o f the inte g ra l wo rth o f va rio us c o ntro l ro d c o nfig ura tio ns ¡ Critic a lity c o nfig ura tio ns o b ta ine d c ha ng ing 235U c o nc e ntra tio n a nd c o ntro l

ro d p o sitio ns;

¡ Me a sure me nts with sta tio na ry a nd c irc ula ting sa lt c o nd itio ns ¡ Me a sure me nt o f the who le c o re iso the rma l te mp e ra ture re a c tivity c o e ffic ie nt ¡ Me a sure me nt o f the p re ssure re a c tivity c o e ffic ie nt

slide-5
SLIDE 5

Cre a ting a b e nc hma rk c o nsists o f two ma in ta sks

¡ Cre a te b e nc hma rk spe c ific a tio ns

¡ Re trie ve da ta a nd re la te d unc e rta inty ¡ Ma ke a ssumptio ns a s ne e de d

¡ T

e st the b e nc hma rk

¡ Cre a te a nd run o ne o r mo re

c o mputa tio na l mo de ls

¡ Asse ss unc e rta intie s

slide-6
SLIDE 6

F ue l g e o me try

slide-7
SLIDE 7

T

  • p c o mpo ne nts
slide-8
SLIDE 8

Co ntro l ro ds a nd sa mple b a ske ts

slide-9
SLIDE 9

Oute r c o re c o mpo ne nts

slide-10
SLIDE 10

Co re mo de l

H

  • rizo ntal c ro ss se c tio n o f the MS

RE mo de l

slide-11
SLIDE 11

Do we l se c tio n o f g ra phite la ttic e

H

  • rizo ntal c ro ss se c tio n o f the do we l

se c tio n o f the graphite lattic e

slide-12
SLIDE 12

T a pe r re g io n

H

  • rizo ntal c ro ss se c tio n o f the tape r re gio n
slide-13
SLIDE 13

Co ntro l ro ds a nd sa mple b a ske ts

H

  • rizo ntal c ro ss se c tio n o f the c o ntro l ro ds and sample baske ts
slide-14
SLIDE 14

Sa mple b a ske ts

slide-15
SLIDE 15

Co ntro l ro ds

slide-16
SLIDE 16

Overall model

slide-17
SLIDE 17

T he b e nc hma rk mo de l wa s te ste d

  • n the first MSRE

c ritic a lity e xpe rime nt

¡ F

ue l sa lt c o mpo sitio n 65L iF

  • 29.2Be F

2-5ZrF 4-0.8UF 4 (99.99% fo r 7L

i e nric hme nt).

¡ F

ue l sa lt d e nsity 145.3 ± 1.0 lb / ft3 (2.3275 ± 0.0160 g / c m 3)

¡ Ma ss fra c tio n o f 235U in the sa lt is 1.408 ± 0.007 wt% ¡ Co re te mpe ra ture 1,181°F

(638°C)

¡ One ro d wa s inse rte d a t 46.6 in. po sitio n, o the r two ro d s a t the ir uppe r limits Case

keff

100(C-E )/ E Be nc hmar k

1.0

  • Calc ulate d

(SE RPE NT 2, E NDF / B-VI I .1 c ro ss se c tio ns) 1.01276 ± 0.000098 1.276

slide-18
SLIDE 18

Gra phite de nsity is the ma jo r so urc e o f unc e rta intie s o n ke ff

Ite m Nomina l a nd bounding va lue s |Dk|×10- 5 Gra phite de nsity

(1.87±0.02) g / c m 3 349

F ue l sa lt de nsity

(2.3275±0.0160) g / c m 3 83

235U ma ss fra c tion in the sa lt

(1.408±0.007) wt% 61

INOR- 8 de nsity

(8.7745±0.0200) g / c m 3 9

Gra phite c ore he ig ht

(166.446±1) c m 19

Gra phite c ore ra dius

(70.168±0.2) c m 13

F ue l c ha nne l width

(1.016±0.127) c m 100

F ue l c ha nne l le ng th

(3.048±0.127) c m 42

6L

i e nric hme nt

(0.01± 0.001) a t. % 174

Boron c onc e ntra tion in g ra phite

(0.00008±0.000008) wt. % 18

Outle t pipe he ig ht

39.687 c m (1s = 4 c m) 31

Distributor thic kne ss

0.819 c m (1s = 0.08 c m) 29

Sa mple ba ske t she ll dime nsion

re mo ve o ne I NOR-8 pla te 16

INOR- 8 c omposition

0.06% (C ma ss fra c tio n), 0.08% 10

T

  • ta l (root me a n squa re )

422

slide-19
SLIDE 19

T he la rg e st se nsitivity c o e ffic ie nts fo r ke ff fro m c ro ss se c tio n da ta unc e rta intie s a re fo r C a nd 235U

Nuc lide T

  • ta l

E la stic sc a tte ring Disa ppe a ra nc e F ission L i- 6

  • 0.0286

0.0000

  • 0.0286
  • L

i- 7

0.0040 0.0165

  • 0.0139
  • Be - 9

0.0251 0.0283

  • 0.0033
  • Zr- 90

0.0014 0.0018

  • 0.0006
  • Zr- 91
  • 0.0060

0.0005

  • 0.0066
  • Zr- 92
  • 0.0007

0.0008

  • 0.0016
  • Zr- 94
  • 0.0002

0.0001

  • 0.0005
  • Zr- 96
  • 0.0006

0.0002

  • 0.0008
  • F
  • 19

0.0749 0.0705

  • 0.0105
  • C- na t

0.5212 0.3970

  • 0.018
  • B- 10
  • 0.0064

0.0000

  • 0.0064
  • U- 235

0.2386 0.0003

  • 0.1386

0.3768

U- 238

  • 0.0857

0.0056

  • 0.0921

0.0006

slide-20
SLIDE 20

Co nc lusio ns

¡ A se t o f b e nc hma rks b a se d o n the MSRE

is unde r de ve lo pme nt

¡ T

he e va lua tio ns will inc lude multiple b e nc hma rks fo llo wing the ze ro -po we r e xpe rime nts c a mpa ig n o f June 1965

¡ A dra ft b e nc hma rk o f the first c ritic a lity o b ta ine d va rying 235U

c o nc e ntra tio n with ste a dy sa lt is unde r re vie w fo r inc lusio n in the Re a c to r Physic s Be nc hma rk E xpe rime nt E va lua tio n Pro je c t (I RPhE P) Ha ndb o o k

¡ I

f yo u a re inte re ste d in the dra ft b e nc hma rk e ma il us: ma xfra to ni@ b e rke le y.e du

slide-21
SLIDE 21

Ac kno wle dg e me nts

Da n She n UC Be rke le y Ge rmina I la s ORNL Je ff Po we rs ORNL Adrie n Bida ud Gre no b le I nstitute o f T e c hno lo g y, F ra nc e L uka Sno j Jo ze f Ste fa n I nstitute , Slo ve nia E va lua to rs I nte rna l re vie we r E xte rna l re vie we r

slide-22
SLIDE 22

Re fe re nc e s

[1] Princ e , B. E ., Ba ll, S. J., E ng e l, J. R., Ha ub e nre ic h P. N., a nd K e rlin, T .W. Ze ro -Po we r Physic s E xpe rime nts o n the Mo lte n-Sa lt Re a c to r E xpe rime nt ORNL

  • 4233, Oa k Ridg e Na tio na l L

a b o ra to ry, Oa k Ridg e , T e nne sse e (1968) [2] Ro b e rtso n, R. C. MSRE De sig n a nd Ope ra tio ns Re po rt Pa rt I : De sc riptio n o f Re a c to r De sig n ORNL

  • T

M-0728, Oa k Ridg e Na tio na l L a b o ra to ry, Oa k Ridg e , T e nne sse e (1965) [3] Brig g s, R. B. Mo lte n-Sa lt Re a c to r Pro g ra m Se mia nnua l Pro g re ss Re po rt ORNL

  • 3626, Oa k Ridg e Na tio na l L

a b o ra to ry, Oa k Ridg e , T e nne sse e (1964)