WTI - Wissenschaftlich-Technische Ingenieurberatung GmbH


The competence of WTI covers the nuclear topics shielding, criticality safety, nuclide build-up, activity retention and release, thermodynamics, fluid dynamics and mechanics.

WTI uses a powerful computer infrastructure including access to super computers of the Research Centre Jülich. The participation in international benchmarking projects demonstrates our permanent competence.
Nuclear analyses
WTI performs all kinds of nuclear analyses, in particular the numerical simulation of neutron and radiation transport.
Main topics
Shielding and skyshine analyses
Proof of criticality safety including burn-up credit, in particular for storage casks and storage racks in reactor storage pools
Analyses of activity release and radiation exposure
Custom-designed software
Our team of competent software engineers develops custom-designed software for
automated quality assured documentation of spent fuel cask loading
standardized mechanical and thermal analyses
pre- and post processing of complex nuclear analyses
Burn-up calculations, cask loading maps
To characterise irradiated components, spent nuclear fuel or waste from the operation of nuclear power plants, WTI performs burn-up and activation analyses.
Main topics
Determination of the radionuclide inventory of irradiated nuclear fuel (e. g. for planning of fuel assembly disposal)
Loading plans for transport and storage casks (calculation of radiation sources)
Calculation of the activation of plant components and structural components
Calculated dose rate distribution at the surface of a CASTOR®-cask
Thermodynamical Analyses
The numerical simulation of the heat dissipation by heat conduction, convection and radiation is an essential basis for the design of parts and components applying finite element and computational fluid dynamics methods.
Validation of thermal calculation methods by comparison between calculation and measurement
Main topics
Thermal design of components, transport- and storage casks as well as storage buildings
Numerical simulation of the heat dissipation by heat conduction, convection and radiation
Validation of numerical calculation methods with temperature measurements
Airflow distribution and cooling by natural convection during the transport of a CASTOR®-cask
Mechanical Analyses
Main topics are simulations and calculations of parts and components as well as their design under static and dynamic loads. For this, among others, finite element methods are applied.
Simulation of dynamic loads due to airplane crash, cask drops or earth quake
Mechanical design of transport and storage casks, cask components and load attachment devices
Validation of numerical calculation methods by means of drop tests
Material testing for the determination of static and dynamical material properties
Calculations for buildings and components under dynamic loads
References Calculation Projects