Implication of PSA uncertainties on risk-informed decision making

摘要: Abstract Nuclear power plants risk-informed policy is introduced in order to improve safety decision making and regulatory efficiency. The corresponding guides define the acceptable risk measures their changes resulting from modifications licensed design of nuclear plant. used acceptance guidelines are core damage frequency large early release frequency. assessed by Probabilistic Safety Assessment. uncertainties Assessment should be appropriately addressed context making, considering implication on obtained results. include epistemic parameter, model, completeness uncertainties. paper presents results uncertainty analysis reference plant making. focuses particularly parameter model analysed modification extension test interval emergency diesel generators. measure analysis. need for appropriate consideration adequately support identified. deficiency usage percentile identified acknowledged. adaptation decision-making principles new recognized.