Analysis of the EBR-II SHRT-45R Unprotected Loss of Flow Experiment with ERANOS and RELAP

Table 1

Main results of the EBR-II SHRT-45R neutronics benchmark.

Parameter	JENDL-4.0	JEFF-3.1.2	ENDF/B-VII.1
Multiplication factor [—]	0.9923	0.9850	0.9849
Uncertainty [%]	0.44	2.1	2.1
[pcm]	691	702	708
Reactivity feedback coefficient [pcm/K]
Axial expansion	−0.84	−0.85	−0.85
Radial expansion	−2.10	−2.14	−2.15
Axial and radial expansion	−2.94	−3.00	−3.02
Sodium density (core only)	−0.71	−0.73	−0.70
Sodium density (all)	−1.90	−2.02	−1.89
Uncertainty [%]	1.71	3.75	4.07
Doppler	−0.024	−0.023	−0.024
Uncertainty [%]	5.81	5.44	5.34
Control rod curve	Graph	Graph	Graph