8 Sensitivity and Uncertainty of Criticality
217
(a) EE1 core (1/8”P60EUEU)
(b) E3 core (3/8”P36EU)
4
5
6
7
8
9
10 11 12 13
14 15 16
17 18 19 20 21 22
23 24 25 26
A
F
B
D
E
G
H
I
J
K
F
F
F
F
F
L
F
F
F
F
F
M
F
F
F
F
F
O
F
F
F
F
F
P
F
F
F
F
F
Q
R
T
U
V
W
X
Y
Safety rod
Neutron source (Am-Be)
Fission chamber
Uncompenndated ionization counter
Control rod
Fuel (1/8"P60EUEU)
Aluminum sheath
Polyethylene reflector
UIC#6
UIC#4
N
N
FC
UIC
S
C
C3
S5
FC#3
FC#2
UIC#5
FC#1
C2
S6
S4
C1
4
5
6
7
8
9
10 11 12 13
14 15 16
17 18 19 20 21 22
23 24 25 26
A
f
B
D
E
G
H
I
J
K
f
f
f
f
f
L
f
f
f
f
f
M
f
f
f
f
f
O
f
f
f
f
f
P
f
Q
R
T
U
V
W
X
Y
Fuel (3/8"P36EU)
Polyethylene reflector
Aluminum sheath
Fission chamber
Uncompensated ionization counter
Control rod
Safety rod
Neutron source (Am-Be)
UIC#6
UIC#4
N
N
FC
UIC
S
C
C3
S5
FC#3
FC#2
UIC#5
FC#1
S4
C1
C2
S6
Fig. 8.1 Top view of KUCA A-core (Refs. [1, 2])