Uncertainty Analysis of Light Water Reactor Fuel Lattices

Table 3

Two-group cross-section uncertainty in LWR fuel assembly.

Response cross-section	Uncertainty (%  Δ𝑅/𝑅)		Uncertainty (%  Δ𝑅/𝑅)		Uncertainty (%  Δ𝑅/𝑅)
	BWR		PWR		VVER
	HZP	HFP	HZP	HFP	HZP	HFP
∑𝑡1	0.84	0.91	0.87	0.88	0.81	0.82
∑𝑡2	0.13	0.15	0.14	0.14	0.12	0.12
𝐷1	0.84	0.91	0.87	0.88	0.81	0.82
𝐷2	0.13	0.15	0.14	0.14	0.12	0.12
∑𝑎1	0.78	0.83	0.86	0.87	0.81	0.82
∑𝑎2	0.20	0.22	0.22	0.22	0.21	0.21
∑𝑓1	0.68	0.72	0.36	0.36	0.47	0.47
∑𝑓2	0.32	0.32	0.32	0.32	0.32	0.32
∑11	0.84	0.91	0.87	0.87	0.81	0.81
∑12	1.10	1.22	1.20	1.21	1.03	1.03
∑21	0.27	0.34	0.30	0.33	0.26	0.29
∑22	0.13	0.16	0.15	0.15	0.13	0.13