Accuracy Evaluation of Monte Carlo Simulation Results Using ENDF/B-VIII.0 and JENDL-5 Libraries for 10 MW_th Micro Heat Pipe-Cooled Reactor

Table 3

Contributions to uncertainty in k_eff for MHPR from Serpent 2 at BOC.

Nuclear data	Uncertainty (pcm)
	ENDF/B-VIII.0	JENDL-5
^235U total/^235U total	409.18	148.93
^235U(n, f)/^235U(n, f)	327.24	191.71
^235U(n, γ)/^235U(n, γ)	248.84	113.77
^16O(n, γ)/^16O(n, γ)	243.57	139.77
^238U(n, γ)/^238U(n, γ)	147.53	167.33
^56Fe(n, γ)/^56Fe(n, γ)	138.38	361.93
^238U total/^238U total	106.01	53.05
^4He elastic/^4He elastic	70.91	—
^238U(n, f)/^238U(n, f)	64.16	53.36
^56Fe elastic/^56Fe elastic	30.09	65.66
^56Fe angular distribution	—	46.37
^52Cr elastic/^52Cr elastic	22.33	13.80
^238U inelastic/^238U inelastic	21.70	85.01
^16O elastic/^16O elastic	19.66	25.45
^238U elastic/^238U elastic	18.45	28.76
^16O angular distribution	—	14.73
^238U angular distribution	—	12.50