Tractebel role for over 60 years in nuclear industry has been to provide trusted high-level engineering services based on state-of-the-art expertise and experience. Tractebel high involvement in first French reactors and EPRs design in the world, the operation, maintenance and dismantling of Belgian nuclear power plants has also made it possible to maintain a significant level of skills and resources. Tractebel, with its Nuclear Business Line made up of nearly 1,000 employees in France, Belgium and Germany working in the nuclear sector, has multi-skilled know-how (civil engineering, mechanical, electrical, nuclear and fluid ventilation, nuclear safety, process, systems engineering, etc.) and experience acquired and maintained over decades in the market's areas of expertise whose feedback and know-how capitalization allow the sustainability of a high level of management and training.