Evaluation of severe accident risks: Quantification of major input parameters

Modeling PSA Problems—I: The Stimulus-Driven Theory of Probabilistic Dynamics

“…The magnitude of the change is mainly driven by a parameter called "burn completeness," which can be expressed either through a correlation on the gas concentrations 16 or via probability density. 17 This implies that these instantaneous changes can be driven by random parameters.…”

Sampling-Based Methods for Uncertainty and Sensitivity Analysis

“…NRC 1990S. NRC -1991Harper et al 1990Harper et al , 1991Harper et al , 1992Breeding et al 1992). Another large example is an assessment of seismic risks in the eastern United States (EPRI 1989).…”

A Methodology for Grouping Source Terms for Consequence Calculations in Probabilistic Risk Assessments

“…(21) into groups for the purpose of consequence analysis. In the first step, the source terms are divided into groups on the basis of EF and CF by placing a rectangular grid on a plot of CF vs. EF.…”

“…(1c16) Extensive experimental results and mechanistic code calculations underlie the accident-progression analy~is(l'-~~) and the source-term analysis. (21)(22)(23)(24) The MACCS (25)(26)(27)(28) code is used for consequence analysis. Figure 1 provides a schematic diagram that details how these four main parts fit into the overall structure of a PRA.…”

“…Since one source term is generated for each accident-progression bin, the total number of source terms that must be considered in the partitioning process is given by nLHS nST = 2 nB, (20)…”