ML20098B571
| ML20098B571 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 06/29/1983 |
| From: | Corlell R WASHINGTON, UNIV. OF, SEATTLE, WA |
| To: | |
| Shared Package | |
| ML20093C471 | List: |
| References | |
| NUDOCS 8409260159 | |
| Download: ML20098B571 (9) | |
Text
.
e i
I:
(
ij I
ASSESSMENT OF SCALING 4
ADEQUACY FOR 1/20TH SCALE TEST I
i j
SY DR. RICHARD CORCETT
. UNIVERSITY OF WASHINGTON a
i i
PRESENTATION TO I
'l NUCLEAR REGULATORY COMMISSION BETHESDA, MARYLAND s
i JUNE 29, 1983 i
l 4
i G409260159 840910 l
j PDR ADOCK 05000458 g
= - -
l
.........,...........u-.
>r.-...
l a....
St OBJECTIVES OF SCALE MODEL FIRE TESTS i
e f
G CRITERIA FOR FIRE / FLAME OCCURANCE
\\
IDIFFUSIVE VS PUFF BURNINGl I
O IF DIFFUSIVE, PREDICT:
FLAME GEOMETRY I
8 ASSOCIATED TilERNAL ENVIRONMENT 0
4 9
E.G.
T-I, '
h qrad 9
c
~
t.
9 8 0
.' )
j s
i 1
s RCC 6/29/83
(.1)
~
.. --1
--m~
-.a
---~;s i'
~
.I.
FIRE /Fl.AMECt.ASSIFICdTION i
l l
1 9
DIFFUSIVE air PRIMARY DIRECTLY OVER POOL 1
-e
~
e^--
^
,t W
-~;
e,
r- - H z
SECONDARY INSUFFICIENT 02 i
p Air
,i i
DIRECTLY OVER POOL - FIRE
(
l
/
/L i
STABILIZES lilGilER e.). 7*4..'T ll, vick he i
4 l
v.
t t-r
^
9 PREMIXED -
PUFF lluRNING 1
l' I
t i
l I
1 RCC 6/29/83 (2)
+,
y.
1.,... J.
k l
g PRIMARY AND SECONDARY FIRE SCAllNG CONCEPTS j
O MOLECULAR TRANSPORT " UNIMPORTANT" G
COMDUSTION IS DIFFUSION - (AS OPPOSED TO RATE-) CONTROLLED j
I Vd L 5
e T
-4 L/V
-L i
2 5/2 e
Ax L y oc. t IGNITION CRITERION - CRITICAL CONCENTRATION i
l 0
CONDITIONS FOR VALIDITY I'
FULL TURDULEilCE - HASICALLY A SIZE' REQUIREMENT 4
NO PRE-MIXING -
UBIOUITOUS IGNITION SOURCES, lilGHLY IMPERFECT MIXING 4
i.
l RCc 6/29/83 (31
.._.....a..
x
.. -. : a..
~~
t PRIMARY FIRES -
SCAllNG MARGIN TURBULENCE WITil IGN. - D I FT.
EFF CR (PROBABLY LESS FOR ll 7 AT BASELINE FLOW)
W/0 IGN, - D SLIGitTLY llIGilER CR i
e CONCENTRATION CRITICAL LOW fi I"
FUEL EFF l
CRITICAL LOW " LOCAL AMBIENT" 0.2 p..
IF DEFF
,CR t
SECONDARY FIRES
- SCALING MARGIN PER PRIMARY FIRE l
d-LEFF }
L 1 FT.
CR i
k g
s 6/29/83 (10 RCC t
l l
.<i PRIMARY FIRES - CONSEQUENCES OF D
< m 1 FT.
I EFF O
l.0WERS CRITICAL LOW M VIS A VIS FULL TURB. SCALING pgg(
EST. ERROR RANGE FOR D,pp 5:: 5" 20%
i O
INCREASES FLAME ilEIGitT l
EST. ERROR RANGE :
30%
i O
OvERALL CIRCULATION SLIGilTLY RETARDED
)
i i
SECONDARY FIRES - CONSEQUENCED OF D
< = 1 FT.
EFF 4
O PROBABLY DELAYS PRIMARY + SECONDARY TRANSITION EST. ERROR RANGE : 20%
4 O
PROBABLY DELAYS SECONDARY FIRE EXPIRATIort l
l i
EST. ERROR RANGE : 20% SECONDARY FIRE LIrETINE 4
i j
l RCC G/29/83 t i,
i I8!.
t
\\
f
~
)
6
~
(
~
i e0 3
8
~
/9 2
/6 C
CR Y
L T
H
)
i G
L L
I L
A S
M S
Y L
O
\\
B O
A T
B O
S i '
R D
I P
E
(
E V
L D
R G
E A
E E
N L
C L
S B
S A
E I
N A
C R
R L
S P
ih l
i l
A T
i B
C G
T T
S N
O O
D E
N N
E Y
L X
L S
V I
B F
C
/
M A
S I
I E
B M
R O
E A
P R
T N
E.
P A
Y a
L D
1 T
E F
U'.-
O P
S F
N u
s 9
9 c.
t 1
~
.I
.Ii; 1
i.
sI!l l
l; ij:! !4
O
+--A----"......
.;.:. 2.. s-L... : = :a -u "MEMN' O", ~ ~".,
- s
-.._.....c___.:
N PRESERVATION.0F T - OVERAl.L CillMNEY' FLOW C00LDOWN 9 COLD-WALL BOUNDING EST. OF FLOW ENERGY LOSS i
d LN AT PD PD F
3 ST
=
_.c< 1
~~
d
( x/D)
A A
8 x
x REYNOLDS ANALOGY 1
WilERE A
= X-SECTION AREA, D = EFFECTIVE DI AN, P = EFFECTIVE :'ORINE x
SCAL.ING CONSIDERATIONS. PD/A IS LOW IN H0 DEL BY FACTOR UP TO "SEVERAL."
g i
. F IS IIIGli l'N MODEL DY SMALLER FACTOR ESTIMATESOF(PD/Ay_(F/8) 1/20 PROTOTYPE 0102 0.05
~
G CREDIT FOR WALL TEMP. RISE: (PD/A ) (F/8) bil00LD BE DIVIDED BY X
1+EfC Js s
s 1/2 V/I o C
K
/T1
+
\\
1 r
N t
lilERMALLY TillCK
'v
- 0(1) r0R PROTOTYPE SCALING REQUIRES CK f3 3 3 *C L RCC 6/29/83 (7)
I
SUMMARY
j l
i
.1/20TH SCALE TEST PROVIDES A MODESTLY CONSERVATIVE REPRESENTATIONOFTHEEXPECJEDTHERMALENVIRONMENT (RESdLTINGFROMDIFFUSIONFLAMES) IN A MK III CONTAINMENT i
FOR THE,NO SPRAY CASE.
1
.i k
I
?
.]
i
~1 1-1 i
l
.~
e h
l t
i l
i
.l 1,
1 J
i l
1 l
e
.i 1
l i
f j
i_
I.
.