Evening Lecture – Doel 3 and Tihange 2: A robust safety case made in Belgium

In the summer of 2012, inspections of the reactor vessels of Doel 3 and Tihange 2 nuclear power stations revealed the presence of indications that required in-depth analyses.

Electrabel carried out a thorough investigation in response to the indications found in the two reactor vessels. These investigations confirmed that the indications correspond to hydrogen flakes formed during manufacturing. The results of the subsequent tests and analyses confirmed the structural integrity of the reactor vessels in question.

In May 2013, the Federal Agency for Nuclear Control (FANC) approved the restart of Doel 3 and Tihange 2 subject to further tests in order to confirm the behavior of the reactor vessel materials under irradiation. Unexpected results led to the shutdown of the 2 reactors from March 2014 until November 2015 following the green light of the FANC. This restart was the result of an elaborate process during which the safety demonstration was thoroughly reviewed.

Starting from the Safety Cases published on FANC Website, Mr. Jean Van Vyve will demonstrate the robustness of the safety demonstration, by detailing the integrated scientific basis, and the conservativeness and the margins the Belgian project team has included, fully justifying the safe operation of the 2 units.


May 26, 2016


6:30 pm - 9:00 pm


Engie Tower
Boulevard Simon Bolivar 34-36, 1000 Brussels


  • Jean Van Vyve
    Project Director at GDF Suez

    Jean Van Vyve has worked for almost 40 years for GDF SUEZ in the nuclear field.

    He started his career in 1975 as design engineer at Tractebel Engineering, for the construction and commissioning of Doel 3 and Doel 4 NPP. He later occupied several positions in different disciplines: Mechanical Engineering, Structural Integrity, Fuel and Core Management, Project Management, culminating as Nuclear Engineering Manager.

    He joined Electrabel in 2007 to become Chief Nuclear Officer in charge of the nuclear fleet. In 2010, he took the position of Manager Nuclear Design and Projects, to steer key projects for Electrabel: LTO of Tihange 1 and Doel 1 & 2, Stress Tests as a consequence of the Fukushima accident, PSR, Strategic Assets Management.

    Since 2012 he is Project Director of the GDF SUEZ integrated team in charge of resolving the RPV issue of Doel 3 and Tihange 2.

    Jean will present the roadmap developed to solve this unprecedented issue: it combines research, testing and analytical work in various disciplines in order to build a sound, robust and convincing Safety Case.

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