EDN: SWSNKQ
Authors & Affiliations
Bezborodov A.N., Titarenko I.A.
National Research Centre “Kurchatov Institute”, Moscow, Russia
Bezborodov A.N. – Head of Laboratory.
Titarenko I.A. – Junior Researcher. Contacts: 1, pl. Akademika
Kurchatova, Moscow, Russia, 123182. Tel.: +7 (499) 196-92-57; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Abstract
Nuclear safety analysis of fuel handling facilities is carried out on the basis of conservative approach. At the same time, accounting of technological deviations of fuel assemblies and handling facilities is based on an expert assessment of the effect of these parameters on the multiplication properties of the system. RB-166-20 “Recommendations on Evaluation of Errors and Uncertainties of the Results of Computed Safety Analyses for Nuclear Power Plants” was put into effect in 2020. It gives various methods for evaluating the effect of uncertainties on the result of safety analysis. Special attention is given to statistical methods in this document. This paper presents an attempt to formalize the procedure for determining a conservative set of parameters for fuel assemblies and handling facilities within the limits of technological deviations. This approach is based on a correlation analysis of the effect of parameters on the neutron multiplication factor Keff and a statistical assessment of the uncertainty of the calculation results using Wilks' formula recommended in RB-166-20. Examples of the application of the presented procedure show its universality for various calculation models of systems.
Keywords
nuclear safety, neutron multiplication factor, fuel handling facility, technological deviations, sensitivity analysis, correlation coefficient, SAPFIR-2006
Article Text (PDF, in Russian)
References
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UDC 621.039.51
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2022, no. 4, 4:3
