Burnup calculationFission yieldBurnup creditENDF/B-VIII.0Uncertainty analysis is performed to qualify the uncertainty of the infinite multiplication factor ( k inf ) and nuclide number density induced by cross sections, fission yields and decay half-life in ENDF/B-VIII.0. The SUNDEW code, ...
Along with this, growing attention is paid to uncertainty and sensitivity studies concerning the nuclear data evaluations, accompanied by improvements in the covariance data files describing the uncertainties of nuclear cross section data, and the calculation methods using these covariance data. For the ...
This calculation will only work when the partial derivatives are 1. The formula changes slightly when x is a product (x = uv) or quotient (x = u/v): Example question #2: A shipping container is 12 x 10 x 8 feet with an uncertainty of 0.1ft. What is the uncertainty in the volume...
The uncertainty of a calculated value depends on the uncertainties in the values used in the calculation and is reflected in how the value is rounded. Measured values can be accurate (close to the true value) and/or precise (showing little variation when measured repeatedly). Exercises E...
A methodology for propagating nuclear data uncertainty through CASMO-4/CASMO-4E – SIMULATE-3 calculation sequence has been developed. The calculation system relies on a two-step approach where an adjoint-based sensitivity analysis is applied on the assembly level, and stochastic sampling on the core...
Uncertainty Pre不确定度计算
Show the initial measurements' calculation±the error of propagation. Frequently Asked Questions What is the error propagation formula? The error propagation formula is a formula developed to take into account for measurement errors in calculations. Measurement errors propagate, or grow faster, than they...
Step 2: Introduce Required Operations for Budget Calculation Now, we add functions and formulas to the table we made for the uncertainty budgets in order to show how to create an uncertainty budget in Excel. The procedure for assessing uncertainty will become more automated as a result of the ...
Fig. 1. Uncertainties calculation scheme. Symbols (+) or (-) indicate that the errors are simply added or subtracted, without using the error propagation rule. “ε” refers to relative uncertainty and “δ” to absolute uncertainty. The uncertainty of the regulated laboratory CVS bag measurement...
Masao Yamanaka Abstract Excess reactivity and control rod worth are generally considered important reactor physics parameters for experimentally examining the neutron characteristics of criticality in a core, and for maintaining safe operation of the reactor core in terms of neutron multiplication in the ...