6 Nuclear Transmutation of Minor Actinide
161
(a) Location of BTB fission chamber (15, O) in HEU-Pb zone
(b) Location of BTB fission chamber (15, K) in HEU-PE zone
(c) Partial fuel rod “10” shown in Fig. 6.4(b)
10 11 12 13
14 15 16
17 18 19 20
E
p
p
p
p
p
p
p
p
p
p
p
BTB BTB chamber
G
p
p
p
p
p
p
p
p
p
p
p
H
p
p
p
p
10 F 10
p
p
p
p
10 Partial fuel (1/8"p10EUEU)
I
p
p
p
F
F
F
F
F
p
p
p
J
p
p
F
F
F
F
F
p
p
K
p
p
p
F
F BTB F
F
p
p
p
L
p
p
p
F
F
F
F
F
p
p
p
M
p
p
F
f
f
f
F
p
p
O
p
p
p
F
f
f
f
F
p
p
p
Q
p
p
p
F
f
f
f
F
p
p
p
R
p
p
F
F
F
F
F
p
p
T
p
p
p
p
p
p
p
p
p
p
p
U
p
p
p
p
p
p
p
p
p
p
p
V
p
p
p
p
p
p
p
p
p
p
p
C2
C3
S5
S6
S4
C1
10 11 12 13
14 15 16
17 18 19 20
E
p
p
p
p
p
p
p
p
p
p
p
BTB BTB chamber
G
p
p
p
p
p
p
p
p
p
p
p
H
p
p
p
p
p
p
p
p
p
p
p
I
p
p
p
F
F
p
F
F
p
p
p
J
p
p
F
F
F
F
F
p
p
K
p
p
p
F
F
F
F
F
p
p
p
L
p
p
p
F
F
F
F
F
p
p
p
M
p
p
F
f
f
f
F
p
p
O
p
p
p
F
f BTB f
F
p
p
p
Q
p
p
p
F
f
f
f
F
p
p
p
R
p
p
F
F
F
F
F
p
p
T
p
p
p
p
p
p
p
p
p
p
p
U
p
p
p
p
p
p
p
p
p
p
p
V
p
p
p
p
p
p
p
p
p
p
p
C2
C3
S5
S6
S4
C1
Fuel (2.5”)
(Unit cell 10 times)
Polyethylene
(10”p+1/2”PE
17+1/4”PE)
(18.75”)
Al plate
(20.00 mm)
Al cells: (1/16”Al 2+1/8”p) 25
(6.25”) +Gr (2”)
Gr (2”) + Void (1.7”)
(1/16”HEU 2 + 1/8”p) 10
(2.5”)
Reflector (27.8”)
(Lower)
Reflector (29.7”)
(Upper)
Al cell
25
times
Al cell
25
times
Polyethylene
(10”p+1/2”PE
19+1/4”PE)
(19.75”)
Al cells: (1/16”Al 2+1/8”p) 25
(6.25”)
Fig. 6.4 Core configuration of critical irradiation experiments on MA (Ref. [1])