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A French leader in nuclear engineering and services


Backed by its skilled workforce of over 2700 men and women, ONET Technologies provides fully-comprehensive services at every stage in the life cycle of nuclear installations including overall:

  • engineering and design for turnkey new build projects and customised equipment,
  • specialised maintenance services,
  • operational support to nuclear facility owners,
  • decomissioning/dismantling and clean-up,
  • waste management.



ONET Technologies has chosen to develop strategic partnerships that will structure and strengthen its growth. It invests in the future by developing new technologies geared for research reactors, for the monitoring and inspection of operating plant, for high-activity dismantling operations, and for application in the field of information technology dedicated to nuclear services


ONET Technologies has its own industrial plant in which it tests and qualifies special equipment. The company's SOGEVAL facility (an ICPE plant) provides clients with appropriate, externalised solutions for their radioactive waste management and nuclear maintenance requirements.



ONET Technologies adheres to the « Nuclear Expertise from France » label. With an engineering department composed of over 400 engineers and specialists, the company exports its know-how to Europe, Japan, and now to the United States via the Group ONET's recent acquisition of EPM ( Engineering Planning and Management, Inc.), a company specialised in safety and fire protection analysis and engineering.

Competence management, operational performance and relentless attention to s afety and security are the corner stones upholding ONET Technologies approach, and are at the core of the services that it provides to each one of its clients.


Our services:


Our strenghts:

  • An experience of over 40 years supporting the key players in the French nuclear sector: EDF, CEA, AREVA and ANDRA
  • A range of integrated engineering and service solutions covering the complete life cycle of nuclear installations
  • On-site presence in practically all the French nuclear plants
  • Increasing expansion into  international markets


Key elements:

  • Sales turnover of 242 million euros (excluding exceptional items).
  • 2 700 employees
  • 400 engineers
  • 30 agencies or offices in France.