Improvement of Core Performance by Introduction of Moderators in a Blanket Region of Fast Reactors
Table 3
(a) Dependence of core performances on the number of ZrD1.7 moderator pins. (b) Dependence of core performances on the number of ZrH1.7 moderator pins.
(a)
Number of moderator Pins
Power peaking factor in core
Power peaking factor of 2nd row assembly in outer core
Power peaking factor in blanket assembly
Increase of core average burn-up (%)
0
1.233
1.173
1.420
—
9
1.253
1.130
1.703
0.9
18
1.231
1.095
1.251
2.9
24
1.230
1.141
1.927
1.2
61
1.202
1.312
—
7.0
(b)
Number of moderator pins
Power peaking factor in core
Power peaking factor of 2nd row assembly in outer core
