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

Table 2

The comparison of the local burnup (unit in MWd/kgU) at three levels given by the present formula (AN) and MC calculations.

1/4	5.96	5.94	21.48	21.33	36.57	36.30
5/8	6.11	6.09	22.11	22.09	37.69	37.80
13/16	6.29	6.29	23.05	23.11	39.53	39.75
29/32	6.48	6.49	24.40	24.22	42.42	41.83
61/64	6.72	6.74	26.62	26.37	47.48	46.55
125/128	7.06	7.08	30.13	30.38	55.50	55.91
127/128	7.68	7.72	37.20	37.31	71.75	71.64
Average errors		0.32%		0.55%		0.84%