A Simple Formula for Local Burnup and Isotope Distributions Based on Approximately Constant Relative Reaction Rate

Table 5

The comparison of the relative reaction rates for a single fuel rod and the fuel rod in an assembly at and .

	single
1/4	1.00	0.0025	2.23	0.23	0.0183
5/8	1.02	0.0025	2.24	0.23	0.0190
13/16	1.04	0.0024	2.25	0.23	0.0205
29/32	1.06	0.0023	2.26	0.23	0.0233
61/64	1.07	0.0023	2.26	0.23	0.0287
125/128	1.08	0.0023	2.27	0.23	0.0374
127/128	1.08	0.0023	2.27	0.23	0.0559
	rod 1
1/4	1.00	0.0024	2.23	0.23	0.0175
5/8	1.02	0.0024	2.24	0.23	0.0182
13/16	1.04	0.0023	2.25	0.23	0.0197
29/32	1.06	0.0022	2.26	0.23	0.0222
61/64	1.07	0.0022	2.26	0.23	0.0272
125/128	1.07	0.0022	2.27	0.23	0.0354
127/128	1.08	0.0022	2.28	0.23	0.0523
	single
1/4	1.00	0.0022	2.18	0.23	0.0168
5/8	1.02	0.0022	2.19	0.23	0.0174
13/16	1.04	0.0021	2.20	0.22	0.0188
29/32	1.05	0.0021	2.21	0.22	0.0214
61/64	1.06	0.0021	2.22	0.22	0.0265
125/128	1.06	0.0020	2.22	0.23	0.0346
127/128	1.07	0.0020	2.23	0.23	0.0510
	rod 1
1/4	1.00	0.0021	2.18	0.22	0.0161
5/8	1.02	0.0021	2.19	0.22	0.0166
13/16	1.04	0.0020	2.20	0.22	0.0178
29/32	1.05	0.0020	2.20	0.22	0.0203
61/64	1.06	0.0020	2.22	0.22	0.0251
125/128	1.06	0.0020	2.21	0.22	0.0327
127/128	1.07	0.0019	2.22	0.22	0.0486