Appendix A4: 235 U-Fueled ADS Core in Medium-Fast Spectrum
323
Table A4.3 Control rod positions at the critical state (Case 1-F) (Ref. [1])
Rod
Rod position [mm]
C1
1200.00
C2
723.31
A3
1200.00
S4
1200.00
S5
1200.00
S6
1200.00
Excess reactivity [pcm]
102.5 ± 1.8
Table A4.4 Control rod worth (Case 1-F) (Ref. [1])
Rod
Rod worth [pcm]
C1 (S4)
866.7 ± 2.7
C2 (S6)
439.4 ± 3.9
A3 (S5)
148.6 ± 7.6
A4.2.2 PNS and Feynman-α Methods
See (Tables A4.5, A4.6, A4.7, A4.8, A4.9, A4.10 and A4.11).
Table A4.5 List of core condition in all the cores shown in Fig. A4.1 (Ref. [1])
Case
# of fuel plates Rod insertion
(down)
14 MeV neutrons
Repetition (Hz) Width (μs) Current (mA)
Case 1-D-1
3016
C1, C2, A3
100
97
0.12
Case 1-D-1T 3016
C1, C2, A3
100
97
0.12
Case 1-D-2
3016
C1, C2, A3
Am–Be
Case 1-D-3
3016
C1, C2, A3
20
97
0.12
Case 1-D-4
3016
C1, C2, A3
20
97
0.12
Table A4.6 List of core condition in all the cores shown in Fig. A4.3a (Ref. [1])
Case
# of fuel plates Rod
14 MeV neutrons
Repetition (Hz) Width (μs) Current (mA)
Case 2-D-1 3000
C1~S6 up 20
97
0.12
Case 2-D-2 3000
C1 down
20
97
0.12
Case 2-D-3 3000
C1 down
50
97
0.12