Uncertainty and Sensitivity Analysis of Void Reactivity Feedback for 3D BWR Assembly Model. (25th October 2017)

• Record Type: Journal Article
• Authors: Slavickas, Andrius; Pabarčius, Raimondas; Tonkūnas, Aurimas; Ušpuras, Eugenijus
• Other Names: Pandey Manmohan Academic Editor.
• Is Part Of: Science and technology of nuclear installations. Volume 2017(2017)
• Publication Date: 2017-10-25
• Subjects: Nuclear engineering -- Periodicals; Nuclear facilities -- Periodicals; Nuclear engineering; Nuclear facilities; Electronic journals; Periodicals; 621.48
• DOI: 10.1155/2017/9894727
• Languages: English
• ISSNs: 1687-6075

Abstract

Abstract : Uncertainty and sensitivity analysis of void reactivity feedback for 3D BWR fuel assembly model is presented in this paper. Uncertainties in basic input data, such as the selection of different cross section library, manufacturing uncertainties in material compositions, and geometrical dimensions, as well as operating data are considered. An extensive modelling of different input data realizations associated with their uncertainties was performed during sensitivity analysis. The propagation of uncertainties was analyzed using the statistical approach. The results revealed that important information on the code predictions can be obtained by analyzing and comparing the codes estimations and their associated uncertainties.