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Mastering Innovation

400 engineers design fully comprehensive solutions covering the entire life cycle of installations, from new build to dismantling, including maintenance and in-service inspection.



Onet Technologies proposes mastered innovative solutions adapted to the needs of nuclear constructors and operators.


These solutions are founded on the experience we have gained during our site operations and on specialised expertise.

Our core competencies:

  • Design (feasibility studies, general and detailed design, technical support, nuclear processes, installations, remote-controlled systems, air-conditioning and ventilation, electrical design, instrumentation and monitoring),
  • Calculations and modelling: stress analysis, thermos-hydraulics, finite element analysis, seismic analysis, criticality analysis, radiation protection, multi-physics,
  • Safety design, environmental analysis, risk analysis,
  • Reconciliation of international norms and standards.

Our references

Equipment displacement systems (SAD) for the Jules Horowitz Reactor
Design, manufacturing and installation of equipment for targeted, component-irradiation testing
Multi-category intermediate waste storage facility – (EIP) CEA Marcoule
Studies concerning the extension of the “EIP” at Marcoule
Study of an innovative system to handle the ASTRID reactor’s fuel assemblies
Conceptual design of a fuel handling system for the ASTRID reactor
video of a solution to increase the storage capacity of the spent fuel