Text

Summary of 971210 Meeting W/Util in Rockville,Md to Discuss Issues Related to ATRIUM-10 ECCS Tests.Purpose of Meeting to Inform Staff of SPC Intent to Proceed W/Eccs Testing & Test Stragedy.Attendance List & Slides Encl
	ML20198F136
Person / Time
Issue date:	12/29/1997
From:	Wang E; NRC (Affiliation Not Assigned)
To:	Essig T; NRC (Affiliation Not Assigned)
References
	PROJECT-702 NUDOCS 9801090304
	Download: ML20198F136 (70)
	v • d • e

..

y 0

_j va atoog 1

UPsITED STATES g

g

]

NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. SNeH001 y.g,)'

December 29. 1997 MEMORANDUM TO: Thomas H. Easig, Acting Chief Generic issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation FROM:

Egan Wang, Reactor Engineer

/7_

Generic Issues and Regulatory improvements Section '

(

i Generic issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation

SUBJECT:

SUMMARY

OF MEETING HELD ON DECEMBER 10,1997, WITH SIEMENS TO DISCUSS ISSUES ON ATRIUM -10 ECCS TESTS On December 10,1997, the staff held a public meeting with Siemens Power Corporation (SPC) at NRC headquarters in Rockville, Maryland to discuss issues related to ATRIUM"-10 emergency core cooling system (ECCS) tests. The purpose of this meeting was to inform the staff of SPC's intent to proceed with ECCS testing and of its test strategy. Attachment 1 lists meeting participants. Attachment 2 provides a set of non-proprietary slides presented by SPC during the meeting. Most of'he material presented at the meeting by SPC was proprietary.

As background information, SPC stated that ECCS Testing is underway to confirm 10 CFR 50, Appendix K coefficients for the ATRIUM *-10 fuel. SPC representutives presented to the staff an overview of; (1) the effort to conduct Numerical Experiments on spray cooling using COBRA TF computer code, (2) the status of the Fuel Cooling Test Facility (FCTF) and the ATRIUM *-10 testing program and challenges, and (3) confirmation that the use cl Appendix K heat transfer coefficients are conservative for ATRIUM *-10 fuel.

The SPC representative stated that the COBRA-TF computer code was developed at Pacific Northwest National Laboratory (PNNL) in 1985. COBRA-TF was previously applied by

- Siemens for 9X9 spray heat transfer coefficients. The results supported spray heat tranrfer coefficients greater than Appendix K values and were submitted to the NRC in 1990. COBRA-TF was recently benchmarked to ATRIUM *-9 fuel tests. Tests simulating boiling water reactor (BWR) 3,4, & S/6's revealed good agreement with measured clad temperatures and no significant geometry effects. Recent COBRA-TF simulation to ATRIUM *-10 fuel confirmed WC6 1

lllI.llll ll il ll, ll N3?

l NBC Rif C$s gif7ER COPY a

l j*# IN Mb W

LOJ i

t t

T. E ssig 2

December 29, 1997 that R was appropriate to proceed with ECCS testing with one rod unpowered and showed ATRIUM

host transfer coefficients to be better than Appendix K values.

Prt,'oct No. 702 Attachements: As stated oc:

Mr. H. Donald Curet, Manager ~

~

Product Licensing Siemens Power Corporation 2101 Hom Rapid Road P.O. Box 130 Richland, Washington 99352 0130 Mr. Jerry Holm Product Licensing Siemens Power Corporation 2101 Hom Rapid Road P.O. Box 130 Richland, Washington 99352-0130 Nucleonics Week, Nu6 ear Fuel, inside N.R.C.

ATTN: Elaine Hiruo, Managing Editor 1200 G Street Suite 1100 Washington, DC 20085 3802

=e

--~%.__

~

f i

T. Essig 2-that it was appropriate to proceed with ECCS testing wPh one rod unpowereo and showed ATRIUMS. heat transfer coefficients to be better than Appendix K values.

Project No. 702 Attachements: As stated cc:

Mr. H. Donald Curet, Manager Product Licensing Siemens Power Corporation 2101 Horn Rapid Road P.O. Box 130 Richland, Washington 99352 0130 Mr. Jerry Holm Product Licensing Siemena Power Corporation 2101 Horn Rapid Road P.O. Box 130 Richland, Washington 99352 0130 Nucleonics Week, Nuclear Fuel, inside N.R.C.

ATTN: Elaine Hiruo, Managing Editor 1200 G Street Suite 1100 Washington, DC 20085-3802 DISTRIBUTION: See attach page Document name: G:\\971210MT. SUM OFC PGE[(,

SC:PGEB AC:PGRB,f) _ f _

is / //j Q~

NAME EWanD:sw Mihicz TEssig Vrh QM9/9)

DATE 12

/97 12/7[/97 OFFICIAL RECORD COPY

1 e

Listof Attendees i

i Name Organization Phone Number i

G. Thomas USNRC 301 415 1814 E. Wang USNRC 301 415 1076 D. Curet SPC 509 375 8563 l

J. Holm SPC 509 375 8142 R. Frohm, Sr.

USNRC 301 415 2866 _ _.

1' T.Uloos USNRC 301 415 1194 Y. Farawila SPC 509 375-4 uD

=*WWume'u' r

A

* * ' = * ' - - W =*-* w "*+'+**

b-t 6' 18 DISTRIBUTION: Mtg. Summary w/Siemens Dated December.29._1997 Hard Copy feelestMle PUBLIC PGEB r# -

OGC ACRS:

EWang EMail SCollins FMiraglia i-RZimmerman BSheron -

JRoe DMatthews GThomas TUlses s

- h

4

.o

'l

+_.

1 SIEMENS 4

d 4

l ATRIUM

-10 ECCS Tests 8

c I

1 i

i 4

Presentation to the NRC l

on December 10,1997 Rockville, MD l

l l

l tariest momens rwwer ce,erseen

P

)

i ll-SIEMENS L

li l;

ATRIUM-10 ECCS Tests - Background i

ECCS Testing is underway to confirm Appendix K coefficients for the ATRIUM-10 3

t i

I i

i j:

I' l

I I

i 4

z 5

f I

1 I

l I

l m p - c.,

e imam 1

)

SIEMENS l

1 ATRIUM-10 ECCS Tests - Background Purpose of this meeting is to inform you of:

~

l t

t t

i i

j l

. Reflood testing involves concurrent upward flow which j

l minimizes concern i

- e

,c 12/15/97

i, l

SIEMENS t

l i

[

Justification

]

i 1

i l

)

Quantitative analyses performed to confirm these effects 1

. COBRA-TF l

. results confirm above effects Rest of presentation concentrates on COBRA-TF analysis

$4emens Power C - - -

12r15797

__=_ -

1 SIEMENS Justification for Performing ATRIUM-10 Spray Heat Transfer Tests with an Unpowe od(s) l i

i Presented by f

i Yousef M. Farawila Siemens Power Corporation - Nuclear Division to l

U.S. Nuclear Regulatory Commission December 10,1997 Siemens rome coepe eeson unsnr i

SIEMENS i

i l

COBRA-TF Simulation of Spray Heat Transfer l

Objectives j

. Present an overview of the effort to conduct Numerical l

Experiments on Spray Cooling using COBRA-TF code.

3

. Present the status of the Fuel Cooling Test Facility (FCTF)

~

and the ATRIUM-10 testing program and challenges.

}

l i

i i

. Confirm use of Appendix K heat transfer coefficients are l

conservative for ATRIUM-10 fuel

[

i i

Sisesions h Casporestasi 12/1M7

~

SIEMENS COBRA-TF Simulation of Spray Heat Transfer l

Summary

. COBRA-TF is a proven tool for simulating spray cooling

~

- different geometries

- different boundary conditions

{

r i

I I

I l

j k

j i

f j

s w r wc -_:.

l tanam 1

1

)

siemens COBRA-TF Simulation of Spray Heat Transfer j

Background of COBRA-TF l

t

. Developed at Pacific Northwest National Lab (PNNL) for the USNRC-RSR (NUREG/CR-4166, Oct.1985)

. Applied first to FLECHT-SEASET blocked bundle analysis

. Previously applied by Siemens for 9x9 spray heat transfer coefficients

- results were submitted to the USNRC in 1990 i

- supported spray heat transfer coefficients greater than Appendix K values i

I siemens Power coepersemi 1:stss?

Il l

lIliIl

l!

!! ! ; l

l :!

,; ! :j!!;

~

r e

f sn a

rT e

e r

r t

s u

u a

n t

t e

o x

x i

i it m

e m

H a

r s

u s

u a

t a

y q

g g

x i

a E

r e

me l

l p

n b

d b i

i i S

o s

u s

it n

q n f

a e

e i

l d

d o

v n

d n

r n

e o

c s

r o

n s

n e

t t

o a

o p

o s

i s

n e

a C

g n

i d

d d

r e

d d

u l

i i

u ud ud n

d nt l

b c

i i

q u a

n a

q u m

e l

i a

u i

s i

q r q r l

l r

r d

sl o

n i

i sl o

s ot i

p e

S o

ud ad moud p

u p s a

o ad o

e F

M v

n e

v u vn u

u s

o n

r r

t n

r r

n r

a T

F c

nie e

e e

i T

n pt n

e n

pt yt e

i t

t s

s a

g ntad s

s a

A o moi o

oi v

cd v

n cd wre c wo s

S R

A a

o r

n N

R M M

E B

B E

M O

O E

S C

C I

o

,l!I

!l

,{:i i l;! c

! 1l 4

icl l

+

e SIEMENS l

COBRA-TF Simulation of Spray Heat Transfer l

COBRA-TF Physical Models t

. Equations of state for water Cliquid and vapor) and non-

~

condensible gas 1

l

. Transport properties for fluids and solid structures

. Flow regime map l

4 l

. Interfacial transfer of

- mass

- energy

- momentum i

. Entrainment and de-entrainment rates

)

. Wall friction and form losses

. Rod and structure heat transfer

. Grid heat transfer

)

. Void drift model I

. Radiation geometries and view factors

- l

.m-

i l

sis u sus l

COBRA-TF Simulation of Spray Heat Transfer i

l COBRA-TF was validated and QA report is being j

prepared

. FLECHT-SEASET 161-rod unblocked bundle tests i

l-i j

. FLECHT 21-rod bundle tests l

i

. FEBA unblocked tests i

i i

i

. FLECHT-SEASET flow blockage tests, 21 and 163 rod l

cases

. FEBA flow blockage tests

. Separate effect tests

. Benchmarking at Siemens

- cross comparison with HUXY code heat up

- comparison with FCTF BWR 9x9 spray heat transfer tests j

omparison with FCTF BWR ATRIUM-9 spray heat transfer j

tests i

l Siemens Power C-12nts7 i

ill 1l1li l{,

J 0

0 5

2 a

0 e

)

0

i!iI!*fi; ige)'i}$lg!iei w

F n-

\\..*.htl*.{[1 w

0 s'

(

gl - ~. 1 I

- ap 2

g I

w g.

-. i e0 r0

.g m

u5 4.s!.!!)I j. lil e1**iitj'Igi2

il;lii li f *. f t 1

.l 0

v' a

i e

r 0

IIil"l{iil,gi_ iIil '

,',:l' :

e

+4 0

F p

m 4 -

1 e '0 T

0 iii l!i!*!!is_ l 5

. 14;'

. ~ '

~-

0 c

tw b

o o

oC m

u.A D

1.

U-D t4D'IIIO X D J' tt g

E e

w a

m#OoUle l'

3

i., e 'J m

A eeu*t

[# 4 **

I " :.p';OU-

.- a e

Et

0 0

5 2

0

)

.Yr 0

i- -

F l * {, '

1, *. '

!iIi -. ;;

,t*

g 0

. d. 'I

(

2 B

l e0 g

/. l r 0

i!: !iLf 2-[i*

?l :*

i2 i :* :

t".

u 5

+

(

t 1 g

a 0

r 0

i!i! i*

.;iii !j'

.: - t e

i i

0 p

m1 e

0 T

{i ! il f i.i ii !*;**

i$:: : i I*

.{ ; iI e f

0

i 5

i

if I4

~

O 3

i. d o

o')g n

3. e i

.I 3

i.._ D *<. ' tD a I ','-

_,ui tr,g8i1n-i gI M c;

, E :l,

g. m nhue81.e N g, 4e o.l 3

ggo)s:114*

a g

e s

O t

s

.t

~

it

$8 l

4

.1

o o

sn N

o

...c.. g. 'p g n a

w

.....w.c

- p.

o u

y l

N i

ec 9 o

...............I g

.....m............._.............i.,..............

D W

/

6 wl

/

i d M t

m 0

.i......

...j D

a

,4 o

....-.............a.U....

s i

t a

4

,/

1 s

E D

o I

t r

fH

....._..7...._................................

o tn

-l

.... y. :.:

o 0

0.8 1.6 2.4 3.2 4

Elevatic.7 (Meters)

Ficure 2. 6 "'emperature vs. Elevation, "' = 80 seconds.

oom N

o

.., -,..r :,-

l o

. u.,.e :., u e..

.~. z - -

...... a.

o

=_

N

. '.~

O c u o

.=

= in l

U em m

o

=_

l t

e i

,3

...................f.......

c p

=

.t

.o o a...............l..................

e D

l

.. ~D ;:

i 1

t o

4.

l O

r.

u s

r.,.. 6.

\\.v. m.

. e /

.d w

-w.

4 l

7 4.,.. g

)./eAo p g g..=.t.-.=..t.

7 ' g *** a =.J. *..*. s "' as

-.', O.s i'

.a,t, s a

J.e..

aa

w.

l

=

Q

5

'O'.

m I

N t

o o

c k o n~.u.r.r.w=w.r.mnnr.u

-- a :. ::.w.5..:::,.

......r..u u.g.. m

-N n

yo

, c,..

W C

s c-

-a rA m

W.O Datas j

o

.. Y p D e.-. lvt.at ou per l

o M

l

... Mean

[o

.~

Lower Deviation o

e,3;;;,,t p m _ _ _.

O

...CCBM.TF o

0 30 60 90 120 150 Time (s)

Figure 2.1 Te'st 61607, 60 inch. Eleva:icn, Ecd 1.

oom i

i l.

OJ i

l c

. -. r ::..................

n

.c i

....r.

k. o

m. -

eJ

.....'.......c........................

co 6

C-

. sn u M i

,g C

..............1

.Oa:a L

- $;. o

'.*;;e: 'ev:.ata:n c-

~

m.

~

.E

......v., g W

b.o

........ c Ve r 0 e v i a : 1 c n

.....cn Ca,..,.,.. a.

o 1

.. COIM-TT i

o

..i

-0 20-t0-W.-

e. u

.0

.:. 0 Ti.:ne (s)

Figure 2.2' Test 61607, 96 I.~.ch Ilevation, Red-1.

[q.

1@

+~.b... - wm -. g.4 _ m - _

ooo i

N o

o t

-e y c r

a o._.--..............;.._..

aN a

e W*C

-t---

-~~

~ ~ - -

o

- - - ~ ~ ~ ~ - - +

~ ~ ~ -

t

.m CO, BRA-TF e e l

gtyxy

~ ~ ~ ~ ~ ~ ~ ~ " - - - - - ~ ~ ~ ~ - ~ ~ ~ ~ ~, ~ ~ - - - - -

c

~ ~ ~ ~ ~ ~ - - -

1 v

o 0

200 400 600 800 1000 Ti:r.e (s)

.r.de. u.-e. 5. 3 Rod 3. u.u.v.v.. ow.',

.d

.=.

eo O

i N

,m.

C e

e

-e w-

/

v c u o m

a e

9 I

u C

gc

=

E v

b f '.

U. t.* * '.t

-~~-- -- --- - -----

c, 1

1 0

200 400 600 800 1000

i t

v......

s) 4 I.

t l

=ad 4

.u.'....v -aw 'o.od i 0.

.r.e -.. - =.

i l

4 u_

~

[

SIEMENS t

i l

COBRA-TF Simulation of Spray Heat Transfer i

1 i

COBRA-TF was used by Siemens to provide the NRC with additional information on spray heat transfer for l

9x9 hcensing.

L j.

. Quantify the effect of varying axial power shape t

i j

- code benchmark to FCTF test 820 with chopped-cosine j

shape

- change axial power shape to upskewed and bottom skewed l

- both best estimate and conservative analyses performed The code proved successful in simulating spray cooling l

l phenomena.

~

1 i

I

i CLAD SURFACE TEMPERATURE FOR HOT ROD AT 1400 SEC. FOR DIFFERENT ENTRAINMENTS COMPARED WITH TEST 820 DATA a

1 I

O e

4 e

ee MZz OH 9>@

> M "<'"

<y

O g

C-h 2 VJ O w 1 O E. M 1 O<.3 M<

Z1-M

.O p <

E- <.

<. e D5x$

. : VJ 2DF N.T

@%5 i.~.

b M

Q i eP

~

W ?"*

C3 9 o-U It l

C se-

. %.- c

_. w _

_v.

i SIEMENS 1

COBRA-TF Simulation of Spray Heat Transfer COBRA-TF was recently ben'chmarked to ATRIUM-9 i

tests 1

1

. The new ATRIUM geometry with an internal water box was simulated.

I

. Tests simulating BWR 3,4, & 5/6's were analyzed.

l

{

- good agreement with measured clad temperatures I

- no significant geometry effects t

t r

t 4

i l

I l

l

{

i

- e e

,~

,mmr

4 11!

I.

21 t a

f(

\\

Q

's t *\\

C O O O O QO D Q 000000000 000000000 j

000'

'OOO i

000 1

OOO O O O.J

=

.000 OOMDDOO'OO 00eOOOOOO 6

$seseOOOO; q=

g 4

e in

. y s

+s a

<s e es ~ s r 7_ ne oy,, ;,, --., g,,, g;,,,, e mem., - e, - ww ~ < w:v s pa r e

~ ~ - - - - - - - -

t i.

I e

O

~b Vi

\\.

i L

g a

CC -

DE Mo 4

.3 5!

c::: -

i jN t.: r._

i

)

^

W

>a L

- gv 2-uo O cn.

c 1

'I i

)

.=

r2 if J.

r 4 ;3

'i O ;;;

t 2 '<

y W

"3h 8

O t=.,

c: g <

i E

r

~8 $ 8

'l m

~

g c::

C

.9 O

~

- o-o o-o o

o o

o l_ - $

(3) aanpaadwal, e

I g _..

4 4

.-.sJ-s' 44' A.M--

A, *.

E ihLE.A

- 4 h,h4 w

,A4,&r e

i m 4.eh94A

-- h M,-* W +4PM h bMMeAdM.5,p,.dce.JJs % 4,,jp44 A.is W.Jhqg. w s h e

e I

1 t

t i

6

_ r t

em 7

w Z-I m

..[

e M

- k t

y t

[<-

w

- LO MC

[

v fe

O j

t d

P" O o, b

'( I

,D Y

=

- 2<

fL e

i l

i

~

- 8 U-I r

f i

4' y

a e

6

.*~

}

6i r -

w,-,

y

_,,.y..._-e-w-.,.-#,,..,%m*#

,-r-s.4, m.,,.

--,.mm,,%.-.t.

_,...m.

,.m.-

y_,_.~.,.._,4...

,_...._.,,m,;,,,..m...._.&--.me...+cma...

esa,,.

4J%6__*

p.+ta f ad M d heseD

^.u MM44MWJe4AM A 4NwdAWFdM' Ah 4 5 #

M*'- 4 44 A weh-e-M MmAA5J44+

s e

- o I

i t

1

~ h.

b

- h i

e e

s h

r N

p

@l "T-f

@ W

- [

%gp#

e

' f

-ewN i

4 w

+e k=#

1

- [

t v

t

-c

[O-

?

f.

Z*

.O o 1

2

'.p w

E*(

c_

L j:

e I

\\'

I

. (

. e a

m OO 9

a 6

C-p v

i l*

. _C -

f,-

i e

d ww w.e 5.

m-e. ',-, -,,

m

rasa

->1.

n.

a as,

u

,e.A 4,

-e s -

m a n-a.w s x m.enuaw s -a nns ua,sa w

-as

,-s auna-,..

wsmae u e na

'h r

h 4

p.

9 es Z

e

?

O-s

- ?<

w

- - Q

.p=@

V) o Oy z e Om

.V 2

4 D 3

5e<

e C:b

.I<

. CDo O

G 9

69

_9' 4-

" - - - ma..- ; "

~

a

(

m 00 4

A T

A

~

. 0 D

. 5

~

3

~

I S

F

._ 0 T

t.

0

_ 3 S

2 1

U5

~

. S0

~

. 0

~

5 R1

. 2 E'

)

VS c

I e

T s

I

._. 0(

N 0

J_

2 e O9 a_

~

I m

T-i M

T A

U

. 0 Ll 5

s l

Ui 1

T MA s

t

~

i l

S

,- u aF 0

.st T vca -

0 F

.t D A 1

T sU

_I R

t dei

)

oTL 1-t I

0 s

R 5

t

.U o

l O

I C

~

f 0

.~

0 0

. 0 0

0 0

n

. 6 4

2 0-8 G

4 2

1 1

I ngv eLp>d%eOEe.E-4

4..

- J 1

t n

T

)

-'h 1

t f

i

-e-e en

,Z

.C n

V-V kf-

I

.M.

88 %

=

Z.O '

h.

z e Om

~l.

I

- 4, 1 >

e 5-'

I-M.

Q --

t

-O.

t.,)

t

.' 4 I L

+

,m

.g.

r

.. - ~,. ~ -...

~.

-.~..-n.=~~~--n-.._.~.--..

.. -... ~

it;

.. e ;

e.

- 6 I

h k

e a

t I

__p.

- ~,

9 e.3 y.

4

. Z.

6

~ M<

+

b v

g.

. V.

s.['

/w s

M_

CO O E:..

.Og Z _-

Om

. F' 2

~

I

. -.o M

e.m.

2

'M<

..r 9

I Z

.g s

O-U.

4 Nt.'

[

e T

4 4.

f^

4 ye.

_ n21.Y..o.";LTf%2)hj a:A -ffwLJy='G:,m " * ?~'TT,QL'M & Q : <-: Y ?.? " % " ' " ~ T

~~;^

~ ** * ' ' ' ' ' ' ' * * ~ ~ ~ ' ' ' " " * " * " ~ ' " " ' '

f dwa 4

eMeAiEF

-=+Ma'

+-

di 2J'+ hm 4 4 S. - an,'

_J_,m21pe@ga a>

_4.4-W4JO* 4 M+.

4--*Asa r,4 4g 4pa_g g Q m j

J.ag

.,e,_,,Ad,,,4,,,a4.

p4 23:q4,.44-g3,E,,g.4m.E,A AJ a u g4 4, p.,g, u,_ fag s.,Jg e..,36,ma 44 de ML.;,

W I

, g~

, i-i 4

e b

4 F

+

h r

+ -+.

Nq NZ m

. M v

F W

e

[

4.

v

- = = = -

M-C

A C

~

e m

o y-

~

.a

. Z.

. Om en eumuus M

e.m M

2 :c:

)

7 O

-M b

', [

v m

i CD

- O

. a 9 '

4 E

. y

~

..q.

{

i 5

M i

. 9.-

t 98 0

h k

~ -

,...~..

5

._E..,,--~..e.~..

,..,,u m-

. -. - - - -~.,_-. --. - -. - ~.,.,

m..e..,

'I

+

-x 4

/'

~

a e

r 5

4 r

E t

e.

Z

\\.

e O LO

~

\\.

A O 3

W~

A I

1 m

-.' l :

O

>b i

5!

Z-

'.5 no O c)

)'.

~

H-C 4

J

<3 i

i D@

1 2k n

~

d-8 J

CO o a s-15 -

p i r-

-g

. E$.

l 5

8 a

l

.o m

O..

i 1

~

U 1o e..'

e o

o o

C.

O O

C.

i ei11 I

i l

~

(3) aanquaadwaJ,

!-D ggg ggpg g, p$ete.ph44t%#EGNMW'N-

-^WM'8" f 7 gM* J1 M 'WMM 4*O O8-

W

.5-s<W n-A 4

&,4 e m.m +, as 4,e

.#aa 4a4%_4ee+&-d-A_.sA3 d A.,4 Aggada.p. de 4 M_..,Wgh -eh M 4e 4 4,@J es.Wm,4As 4-SE m. M._ Adet s.di,a-w+# hW 4a,4.eu pW4 4,qubd4Wh67-#.h Aals..aAs g,

d. A4MA

?

s.

s' e

y i

h-j

!=

4 I

t d'i e

y y._.7 m.

l e*

4 m

9 d

m O-X t

v i

k[<

W.

g M

"M C fe "O :

g Z-Oenote mand PW 2

< 3_

j ~

~.V b

. 2 '<

i r.

O M

4>

l<-

Z CD O

u 9

a

. S 4

+

k e

~en,m--t

-,N y t v. w,,.e, N yw w m

,4_ _

+ ~.,,

-+.

+

.n

.;<=.was._.

as a.

g.,s.a.

- s

--a.-

s, u m.

g-

.g.

?

e e

e a4 -

ENV a

Z

g N.

k[.<

w

-.3 10

'A O C:.

o a..

2w Om I.

E~ 2

.<D a-)

.1 C: -

F l.<

w<

OU

^.

~~

d_ _

w<+

..a.:

p

,aa

-<*+a sma - s ---

.4.4

=

a a

. e aae,+

s

-- ssa a -. m 4-4..m.4-n. u..%, e,a w u -

a -u a

-,*e-...a ham Ah-F * *=,==

.. - t 1

3

+

..I

'e i

E i.r*+-

s

-e. u, -

u...

w.

g,..,

j j

. e se NZ'

_g

-O h

U

'[

/%

P%** '.g

'O '

(

to

-MO oy E.

O :n.

P l.

2

'<3.D M

P w.~

4(

C:

l W.

CD O

O 4-

e f

.' t.

,e --

.A~.____

o P

SIEMENS j

COBRA-TF Simulation of Spray Heat Transfer R

ll

?

Numerical experiments were conducted for ATRIUM-10 fuel i

Purpose:

characterize any differences compared with

];

earlier experience prior to actual testing i

- smaller rod diameter in 10x10 array l

il

- 8 part-length rods l

ll

. The same boundary conditions like the 9x9 cases l

o g

. Vary axial power distribution; cosine, top-peaked, bottom-j ij peaked 1

r j

j

. Best estimate and conservative (reduced inlet drop i

entrainment)

-l j

i i

si

% c-mism

l l

SIEMENS.

j l

i COBRA-TF Simulation of Spray Heat Transfer I

Numerical experiments were conducted for ATRIUM-10 i

I fuel (continuedD l

r

. Observation:

- break down of counter-current flow limitation due to part-length rods

- spray water streams downward and diffuse radially

[

t droplets are entrained in steam updraft increasing droplet l

population which increases convective heat transfer

. Result:

- generally superior performance with higher heat transfer j

coefficient i

i

- particularly evident improvement for the limiting top-peaked

~

cases l

Siemens Power Corporation 1 211 519 7

l SIEMENS i

1 l

.i COBRA-TF Simulation of Spray Heat Transfer

.i

q

- 1 h

/

1 l

14 Siemens Power Corporation 12/15/97

8

+

SIEMENS t

COBRA-TF Simulation of Spray Heat Transfer 1

and Effect of Unpowered Rod Pre-Test Simulations for ATRIUM-10

)

l j.

1 l-i i

1 I

i b

4 i

i l

i

^

n t

I siemene Power corporation 1211 sis 7

1 i

i

~

'O000000OOG b

O000000O@O gn ir O000000D0D e

bn e

's u

o O0001

. x@6D N

ro t

O000 cu d

'~

n O00OE t-oC 0

~

O00@@@@@@@

1

-M U

OO@.@@@@@@@

l l

iTA O@@@@@@@@@

Rf@@@@@@@@p D

J' 1

5

^

.j

~

..r... ( -

.-4

'4

-Jm --

-4

.,-.m,,-%

s..

em

'en d e-G 4.W.S O

Z -'

>- O

<.i...

-.b

.s E

o A

O.~M e

Z.m

.Oey E-- P

<^

D g 21,

CQ D M

~ P

=

r <.

I<

w.

M U

7 ed i0

.-me e, r r -

m.

.,-w

, m.

MA&

4.-saeA-444,a.se.

...MW4A.) WJ.4 A

..-4-4dMJmm Ab.eamh

.4.A

.=_.Aad 6 h. A d.

AmW.DEe_,a$kJE--,

B_M'4Js-sa44 fan 4.

+gA e d..L am

--4.e4@aw2 4**44a*

44..hara.

A heAa-Ar.;

pa*.dwe a Ae. AmM. e44mir,

)

- G.

': $ ? 's '_l

_Q i

I a

h 4

-~ 9, 8

e es Q_Z e

S.M.

O'.

u mz

- m ~

g

.W

< i-

_Oz C

y) U r."O O c:

ZU O~

~_FP 36 D-21

-2 CO :D_-

M g.-

E- <

4

- e C3 O

-O s

4 4

e

'I a

L 5

i N+:

e

-.e d w.t.,,~.

-4 4 A--i

P%

a-aWs 6

4L-

-asJ.L,4-*@J-

.-J.R,,. ade

/6m

--&--4 FA--

a.

.a.

J

$,.a S.-.-&

.4-

-E c.

4

+.-#*6 A=--@fJ.--,2 re.Ae de.*t 46,*MA*A41-#d-.e.

<.4 8

.5

- =

.s.

9 t

i I

k

. +..

e-g...m..-am.6

,-e,i.

_,.en.w_y q.

.-.-n

,,,w,w,.

w

_ _w #, u

_e

-#,a.p%._.,

,w.,

k

' EN r

VZ G

M

~.

Uc Z

m f

.=.=

S T

==.e h

w8 Y. s O W.e Z c3 O

-.n

- e.m.b 9

<g D<^

JDo -

2l

. -z E a-W Ih.

7*

%-e ev

- O U

t 4

4

.,9 4

d 4

0-

~~a-.u--..~-

.7,,__7

/

(d/EljfJ4/n18) 'J003 sucal avaH C

C C

c A.

C N

o t

C N

C

~

E 1

=.

~

Ae f

z

-E i

-E O

r?

T O

um z

(

s.

2 r

L x

<::' i-

'.A

,M

,k N5 cz WC I

=

U 5-

-3 r.

(l,.

N i

Z CO

<g/:

-v OM U

o i

z f,.7

,) E "

O lT'#

.t N o 2:

i

]

.5 E-P U.L 3_

, O

-e

=

m

.g yl 5

a 2

g CD g

fZ dmoe 8 m oh N 3,* 5

~

e a$'88

,y "

g y

NN a

Od'E dd E'<

A 8 8!

j 4

3 gag

!nno it e

m CD.

8 i

O

=

i j 5-ir uoe O

j i'

.f

..t i.e.

..t

..ii.,,

=

D o

o o

o 8

8 8

e 8

o v

N o

e u

(3) a.mie.tadtual O

.,, en

, n. m - m -- --

- - -,, - - - - - - - -, - - ~ - - - -

=----------------

L l

4

i!? t; 'Lh'8,f.

\\ltli f t t ii

!l tt

t c

e

'il II, i

4 1

=

G N

I.

l O

~

OC S

~

N YO I

AT.

I RD PN.

SO C.

F 4

OR W.

NB 0 R 1TO.

F 4L 0

U1 M-M I

SU.

I.R F T.

TA

-AR BO C

A '

i. i f,

!i*

2 a'

.w-

-W.4sm>*

h4_-

A

_J..,.

m.mmia sb4 A

euun-+a4&

e 4A_ges..#.g_

m4-.4A.-t b

z Jg.Jd<4.J_A.

m__-_-e p 4. d3

_aA &# Ca6 m d.hM-_-+4ma,&L'b4,,

-4he'E A--

-mse.

MaM.p.

-JIiI 1

4 l

n +

a n

f

' [-

m O

vA e g -

Z

>.O -

.O

=

CD O-o 1

e O ano.

v k: '

ZC Oy E-P

<^

-.DO 21

-2 Cf) D -

M I.

IF

. ::- <C l<-

&m.

C)

+

i

'6 i

k

'O-4

. _,9 849 % e ~ e' ' -" e n e 'e* *, m e, - e =

evves

-N'm--=-w a-+

-. -...~--

~

p 1

)

COBRA-TF SIMULATION OF SPRAY COOL.ING '

ATI'IUM-10 F0lt 11WR5/G CONDITIONS l

1000.0

,l ir, o llcal Trans. Coef.

.D 3 400.g.

ROD-33 w

nou-4i 1200.0 r--j

, a 7, o,-

,.....s non-42 d

C-

-j

's I

w k

1 0 0 '.

1000.0 3

e I

t g

Ternperature j

g 8

o C

o non-33 J

m 800.0 5

7.r, e

u C

O n00-4I j

(

o

(

t.

a HOD-42 ph

[.

p.'.~'.*.~,,

g 600.0

(

V.l. ~/.q / \\,.n:p c'

/

N' f..

.fj i

400.0

[

I t-*

.2 p.--*"~

~25 e

200.0 x

.0

....1_._._.___1_._.......s_..

...s.

U U

GO 120 Illo 240

HMI TilllC (SCC) 1

.I

br

-,n.umJd

.m' E2-kA4A de..

m 2,*mu ul-4 e4.

4.#4As d.6 M--

>M w.s 6

-.m ad.A.~.-

d.

4 L.-p.

b Ah#44n J e

g A

.,8 e

Ju-

.3,,,aa P

A 9-h;*3-e e'

i e

P y

k; -- '

~

l 1

t

..-,p a

v=u -s ia

-+

-~"Y 3

OO Y

h Z

4 G.

m.

O

/*)

vZ m 1

%se j

g amme

/

~o.m w.a c_ p.

CO U -

,. -to

-N

.Oc,

.~

O A

- < P e

- :D o -

i

- CD 1.

+

c.

W i

-p y

I<

. m O-U 5

4

/

w t "

i ~

S.

+ ~ -. ~,,

u,,,,..,,,,4,.e,-.--.~4.,--,.---<w----+---~

---~+ --- -

- - - ' + -

s=+ru

.a.

p s.s

+

a

..a2..s r

s e

u-;..

u as..

>.aa..u.--

, n me ap x n + _.u

s

._u.,-1,

.w, ee

.s-u.n..

,m.,,.

a m, w a,,

.ax, a.n au.na,,..,,,.n.,n.,-

14-

- f a.

i 4

h i

f

}

t-m 4

9 i

e o

Y q

=Z e -

,M e

Og.

.M :C v.Zm W

~

a.

6Y

.([] O to e2 1

Oe-v e==

t Q =m

=s M

5 e

Q-

-'<P J'

Do

_% ~i C/2 2 D

r l

" W

. c-" *-

.I-<

K CO O

U l

e G

~

l.

e-t 0

~

SIEMENS 1

i e

1.I COBRA-TF Simulation of Spray Heat Transfer 4

4 i

h 1

l i

e 1

i s

l 4

SIEMENS COBRA-TF Simulation Summary 1

COBRA-TF is qualified for simulating spray cooling -

conditions

. Different geometries (9x9, ATRIUM-9)

. Different boundary conditions

~

Applied to ATRIUM-10

~

j i

. Confirms appropnate to proceed with ECCS testing with one rod unpowered 1

. Shows ATRIUM-10 heat transfer coefficients to be better j

than Appendix K values

- c

l J!

siemens ll i

l j

COBRA-1 t Simulation Summary i

COBRA-RF may be used with " appropriate experimental

?!

data"* to justify spray cooling coefficients without the Fj need to perform spray cooling tests in the future for:

H

. Fuel design changes j

3 l

. New fuel designs s-g-

. SPC may seek NRC approval of COBRA-TF for this purpose i.

Li i

i

Appendix K,\\,6.

Convective Heat Transfer Coefficient for BWR FuelRods Under Spray Cooling"... convective heat transfer shall b'e calculated using coefficients based on appropriate experimental data."

__j

~ ~ cm,,,

umm

L ll!{:

l

)

s

)

d d

o o

R R

d t

l o

o w

C l

I

(

F F

F 7

F F

1 0

0 0

5 0

0 0

0 o

0 1

7 5

5 5

0 e

5 3

5 e

2 9

3 1

6 7

9 1

1 0

0 7

6 s

5 4

4 3

1 1

h h h )h}

h( ehh GN e

IL e

Ods Oe Cr0 e

YAw0 h

0 Ro 3

'I P S s=

ehh 0 d 1 oe M Rt rr ehh U

i lT l

t l

iA T

A.n ehh si

?

l OnoG i4 Nt d6

- hhhehh Oi9 IT An LoUC=

hhhhehh M

n IS 3o hhhhhehh l

l FR A

T a

- Wv ADe I( hhhhhhehh l

l lU E

O C

~

a

.3 i

=

e 2

-8 O

o C

l) v v

s m

m m

m

,m C\\1 O

c.

o o

O O

C C

O Q

9 9

co e

e o

o n

CD t7 C

O O

v c

O C

O P-CD C

v to v

C7 9990 9999

=

vv 8 "*v U VJ

- O W<,U DO

_d D,,:

O@O a._ =.

x.-

I- <

<8!;

O@@

.- T gts 099000 i.1 o u i

i:

0069699 4

esi cGOOOOOOO

<QU 15 *@@e000000 e

. ~. _..

m.

l I

l t

=

8 5

e x

2 8

6 h

h h

.b

.b b

b n

o o

o A

o o

o.

O o

C.

A o

C e

o e

e o

o o

C e

o n

Q C

v N

o o

o C

C v

M N

y n

999@

0999

=

Z Up

-.2 5 to HU w 60

>~ f o'

!8 et v il D:

@@S it.

@@e

=

w!;

See i.yls 009999 1,3 ;

e6000000 OOOOOOOO ni

<C0i

@@@@@G000

=

O e

l

=

_5 i

3 2

0 b

b b

k b

b b

b aaaaaaasaa g

8

?

8 8

?

e 8

2 m

o o

e n

n n

0990 0999 aa8 G T, "

'o

>- k C5 W;

OO ese it.

OOO s i~

OOO lii 000000

!;1; e000000 4:

+00000000 i*i*O00000000 l

l l

e

~...

v vx i

=

'l a

.3 0a

=

u.

n8 e

R ne8

,e e

8 e

e e

c n

g g

000@

@OOO

,g Y

U bzN A

Eo W

>. y 6 D

ce

!!i

'9 9 9 i: S 999 es; 000@00

!;1; esecome 4:

'@e000000

<Co la *@@@@@@@@@

t 9

.. - ~.....

~

T.

7

=

- J a

.E Ob O

b k

E k

A A

E A

M O

O O

O

D E

9 9

Q Q

9 (C

O O

O c

0 0

0 C

to CD CD v

N to C)

M m

O O

'J CD C

v M

N N

N

_O 000@

0000

.,8e 82"

>-h"O Ci D8 ee

_ m i, ih

@@S m00 F<.

=

ti; eeO 090999

!;1 ceoocee 4:

OO@@@@@O sOgo *@@@O90000 1

l

t

^

3 i

eT cs 3

s C

o C

U

'e E

E A

E E

A A

k k

A O

O O

O i

q q

q Q

q q

O, q

L cn o

e e

o e

o O

O O

0 0

0 (7

6 c

M O

CD

.C b

b b

N 000@

@OOOO

.,a8 kvm

$w h

>hCdW OO y Il

,E o O @i @

~

e 2C YT.

=

~i;T O@@

e g.-

tis 000000

!;i 6e000e0 W

O0000000 i;3 u 3000000000 a

l l

i l

e

?

t I

i 2

3

~.

2 a2 0

c.

E E

A E

L-A E

k L

k I

CD C

C O

O O

Y 9

9 9

c O

c c

O O

i O

O C

C c

c b

N O

0)

O N

N 6

6 b

~

9999 99999

'f bad Z

~,.U U

U.

>goV OO m !!

T3U b

,b e

W W

x=E p

l

==b F<.

=

w!;y j..i s 000000 6

5 6

0 4: 1 e@@@@@@@O

< Q c)

- i

900000000 o

l I

i l

e e

1

t t

i v

ix

~

s i

E B

x a

x x

z a

a w

z A

aaaaaaaaaa 8

8 8

8' 8

8 8

8 o

a e

o t-e e-c-

See6 sette O2 8

$ 1B

Q ua Ugd D

Se

=e un

@@S il.

O@@

eii e@O l.F GOOO99

!a; eseeceo esi

00@@@@@@

<Qc 15 000000@O9 l

L e

I i

g 1

e 3

J

_8 b

b b

c o

o o

O 9

C.

9 9

9 C.

9 9

9 e

e o

o o

o 0) c T*

C) o O

C C

o o

0)

CD CD l*

f*

l' OOO@

@OOOO Z

=-

8 aw m>-go se W'

OO rn il D

O@@

5=: I~

s-p<.

W

=

ei;Y O@@

g8 OOOOOO (1

61;

@@OOO@@

4si OG@@@@@@

< 03 0 85 4900000000 O

P e+

w w

v ir+

. e ;;r 3-,a,,

e

r,,g.-e,ai+-,-

,.,--.w--

af-.-

-w.-- - - - - - - -

,v,,an-

l.-

i a

CODRA-TF' SIMUIATION OF' ATRIUM-10 SPRAY COOLING BWR-3 Conditions. All Rods Powered Elevation = 69.4G in. Time = 100.0 see h 1003.57 F (llot Rod) h h

970.00 F

~

hh@

h 910.00 F hhh h 045.00 F h

hh 705.00 F hhhh kk4 755.00 F hh h 750.00 F hhhhhh h 750.00 F 00000000 9 voooo e h 750.00 F (Cold Rod)

a e

l I

m n

=

5 E

o

" ~ ' '

Ca.

E

!=.

Is.

Ca.

E Is.

(s.

Er Is.

O O

C 9

9 9

6 c

O e

O O

C C

O O

N Y

N e

M

=

CD CD CD b

b

(*

[*

CD C

to 4

000@

OOOO m

se pC) m 6

>[0 1

o K' c3 '

OS D il Get m

O O,.""

P<.

<=

G GOS lD

@@OOOO i;

0000000 di 00000000

< C3 to 15 *OOOO@OOOO h

r

l i

COBRA-TF SIMULATION OF ATRIUM-10 SPRAY COOLING BWR-3 Conditions, All Rods Powered Elevation = 69.46 in. Time =

60.0 sec h 750.00 F (Hot Rod) h 745.00 F 0

h h 745.00 F 745.00 F

+

h 740.00 F 710.00 F hh h

h 650.00 F 595.00 F

@OOOOOO@

O sas-e l

- @@@@@@@@Oe e soa~ r <c >an~>

l l

l 1

i 1

A m

i ic:

~

1 O

o 4

O I

%sp' V

1 e

m m

i o

e o

o e

o o

i 9

9 9

N e

C O

O o

O O

v i

O v

v v

v CD o

N C3 b

b b

CD CD C

v CO ce@e seet O

Z 3

8 1

omm I

80 h

i C$

l b"

OO D gll OOO m

W.

OOO

<C

{

8!;Y OOO 2"9 00000O 2

l 4;

00000e0 90000000 ui 4 tD u i

900000000 5

l l

i l

\\

I s

l l

--- : ~~~ ~;;;;;;;z ; - " ~

---:"--~~-

r

!ii

{

ljj!

a a

)

d o

t I

d t

i n

e I

c I(

c ie r

e r

r r

e V

c o

a

~

= au o

0 o

0 0

o.

ma 0

s

~

0 5

s a

v e

5 4

4 4

s 4

a a

7 7

2 v

e99e G

N ce IOds Oe

~0 Cr0 e

YAw0 2

60 Ro I' P S s=

000 0 d 1 oe l

Ml n i

U 060 iT l l l l iTA A

n 000

.si F

Ono6 i4 Nt O00000 Oi9 T d6 I

An Lo UC=

x0O00000 M

n IS3o

- Wv

- 00O00000 i

VR t T

a ABe h00O00090 R

l U

E i

O C

f l;l!

i

,

ML20198F136

Contents

Text

SUBJECT:

SUMMARY

=

Purpose:

=

Navigation menu

ML20198F136

Text

SUBJECT:

SUMMARY

=

Purpose:

=

Navigation menu

Search