Validate the mechanical strength of an electrical cabinet undergoing seismic effects according to the verification criteria of the RCC-M (Design and Construction Rules for Mechanical Components of PWR Nuclear Islands).

Main operations

  • Finite-element modelling of the whole electrical cabinet.
  • Calculation of the modal basis: natural frequencies and mode shapes
  • Seismic calculation by spectrum analysis with CQC modal recombination (Complete Quadratic Combination).
  • Analysis of the movement and calculated stress on the structure and comparison with permissible values defined in the RCC-M.
  • Extraction of the reaction efforts at the electrical cabinet anchor points.
  • Correlation with qualification tests on vibration table.


Tool: Ansys

FEM, Finite-element modelling, modal analysis and spectrum response.