SCALE Modeling of Selected Neutronics Test Problems within the OECD UAM LWR’s Benchmark

Table 6

Phase I-1 Exercises.

Micro-XS	SCALE 6.1	SERPENT	Uncertainty due to nuclear data (%)	Unit cell
^235U absorption	41.48	40.41 ± 0.0086	1.22	BWR
^238U absorption	0.88	0.80 ± 0.0011	0.97
^235U fission	33.43	32.56 ± 0.00069	1.22
^238U fission	0.086	0.089 ± 0.00097	4.79
^235U absorption	42.95	42.18 ± 0.00088	1.09	PWR
^238U absorption	0.96	0.93 ± 0.0011	0.97
^235U fission	34.72	34.10 ± 0.00064	1.11
^238U fission	0.099	0.10 ± 0.00096	3.94
^235U absorption	58.13	57.26 ± 0.00085	1.03	VVER
^238U absorption	1.042	1.005 ± 0.0012	0.99
^235U fission	47.84	47.76 ± 0.00063	1.05
^238U fission	0.093	0.095 ± 0.00100	3.88