Nuclear Data Uncertainty Quantification and Propagation for Safety Analysis of Lead-Cooled Fast Reactors

Table 3

Relative contribution to uncertainty of k_inf for an inner assembly from serpent at BOC and EOC.

Rank	Uncertainty Contribution (%)
	Nuclide/nuclide-reaction	BOC	Nuclide/nuclide-reaction	EOC
1	^235U (n, γ)/^235 U (n, γ)	65.8	^235U (n, γ)/^235U (n, γ)	54.7
2	^238U (n, n′)/^238U (n, n′)	19.1	^238U (n, n′)/^238U (n, n′)	27.9
3	^238U (n, γ)/^238U (n, γ)	5.11	^238U (n, γ)/^238U (n, γ)	5.86
4	^235U fission/^235U fission	1.74	^235U fission/^235U fission	1.81
5	^56Fe elastic/^56Fe elastic	1.73	^16O (n, n)/^16O (n, n)	1.52