Uncertainty Propagation Analysis for PWR Burnup Pin-Cell Benchmark by Monte Carlo Code McCARD

Table 1

Comparison of 𝑘 uncertainties due to the covariance of ²³⁵U and ²³⁸U from ENDF/B-VII.1 and SCALE6.1/COVA.

Covariance data		ENDF/B-VII.1; 44G Cov.	SCALE6.1/; COVA-44G
RSD due to ^235U (%)	ν, ν	0.604	0.264
	(𝑛,𝛾), (𝑛,𝛾)	0.216	0.211
	(𝑛,𝛾), (𝑛, fis)	0.075	0.076
	(𝑛, fis), (𝑛, fis)	0.081	0.075
	(𝑛,𝑛^′), (𝑛,𝑛^′)	0.001	0.002
RSD due to ^238U (%)	𝜈,𝜈	0.071	0.070
	(𝑛,γ), (𝑛,𝛾)	0.294	0.263
	(𝑛, fis), (𝑛, fis)	0.016	0.015
	(𝑛,𝑛^′), (𝑛,𝑛^′)	0.104	0.105
Total		0.729	0.463