In order to assess the impact brought about by parameter uncertainty on fuel elements performance,combinations of parameters within the error range of the fuel elements at the design stage need to be calculated and evaluated.Orthogonal experimental methods were used to take values for combinations of key parameters of the rod fuel elements and to prepare test cases.Mixed-level orthogonal tables were prepared based on the selected key design parameters and the levels of each parameter,and 36 sets of test cases were identified.Test calculations were performed on the 36 cases,and the results showed that the total cladding deformation of some test cases did not satisfy the fuel rod design guidelines,indicating that the parameter uncertainty negatively affected the fuel element behavior.The preparation and analysis of the test cases provide guidance for the design of fuel elements.
Rod-shaped fuel elementsOrthogonal experimental methodOrthogonal tableSensitivity analysisPerformance analysis of fuel elements
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