Abstract

It is a key issue to clarify failure mode of piping in nuclear power plants and its safety margin included in the design practice. In this study, a series of dynamic failure tests of a thin wall tee for sodium-cooled fast reactors was conducted. Some discussions related to the thin wall tee are provided on the failure mode under seismic load, dynamic response behavior, accuracy of fatigue prediction by dynamic elastic-plastic analysis, and a safety margin of fatigue evaluation which is included in conventional design rule.

Issue Section:
Materials and Fabrication
Topics:
Design, Failure, Failure mechanisms, Fatigue, Pipes, Stress, Thin wall structures, Dynamic response, Tensile strength, Finite element analysis, Fast neutron reactors, Sodium

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