We calculate the stability of structural components of nuclear plants regarding external events as well as internal dynamic loads. Our effectiveness is based on adequate modeling (beam models, shell models, solid models) according to the respective load case up to non-linear modeling.

The dynamic calculations are carried out by

• Time History Modal Analysis THMA
• Response Spectrum Modal Analysis RSMA or
• probabilistic methods.

Results such as deflections, forces and stresses are displayed in tabular form and colored graphics.

Our simulation results are also used for proof of stability and feasibility studies.

The modeling of soil-structure-interaction (SSI) captured by the Floor Response Spectrum (FRS) is possible with different levels of detail:

• Spring dashpot-model (constant or frequency dependent)
• Continuum model
• Finite-Element-Method

This method provides response spectra and directly applicable design response spectra for

• all dynamic load cases,
• all kinds of buildings and
• main components (primary systems, reactor safety containment)

and contains

• consideration of damping and ductility,
• generation of time histories,
• deconvolution of time histories.

Our service also includes calculative and experimental proofs of the mechanical as well as electro-technical plant components up to reactor pressure vessel including built-in parts.