Design Engineer Core Physics & Fuel Studies

Requisition ID:  22980


Tractebel’s Nuclear Entity seeks for its Core & Fuel studies Group (Safety and Modelling Expertise Competence Centre) a (m/f) :

Design Engineer (core physics)


The "Core and Fuel Studies" Group within the “Safety and Modelling Expertise" Competence Centre is in charge of the Tractebel activities related to the fuel cycle, core design, safety evaluation and core exploitation support for nuclear reactors for the Belgian Utility.  It also performs the criticality, shielding and activation assessment of fresh and irradiated fuel.

The group is subdivided into three operational subgroups, each one under the responsibility of a sub-group leader :

i)   Cycles Studies, incorporating Cycle Studies activities and Core physics studies

ii)  Neutronic studies & Tools: incorporating all activities related to Criticality, Shielding, Activation, Residual Heat and Fuel Data Base(s)

iii) Core Multiphysics, Methods & Support, encompassing cross-cutting activities and common projects within the range of Core & Fuel Studies expertise

your job

In the Cycle Studies sub-group, you will be in charge of core reload design, reload safety verification and core operational support for the Belgian nuclear power plants.  The main tasks are:

  • engineering studies in the domain of core and fuel physics using industry-standard methods and simulation codes
  • definition in-core fuel management strategy and new core loading patterns consistently with the Utility requirements
  • verification of the cycle safety as regards the core neutronics and thermal-hydraulic aspects
  • engineering support to the Utility, in particular participation to the start-up tests, to the core depletion follow-up, ..
  • Writing Engineering / synthesis reports of your analyzes


  • You are a civil or industrial engineer, specialized in nuclear energy, physics or electromechanics, or B.Sc. in physics.  A practical proficiency in core physics calculations is an asset.
  • You are keen to develop a technical expertise
  • You have a good theoretical background in nuclear systems, core physics phenomena and neutronics.


  • You are interested in the technical knowledge of various disciplines of Core Physics (in particular neutronics but also thermal-hydraulics, nuclear fuel thermomechanics).
  • You have proficiency in IT (with an emphasis python programming)
  • You speak English and French or Dutch with a good practice of the other language.
  • You apply self-verification with a rigorous mind and you deliver quality within tight schedules.
  • You are good listener, dynamic and you like teamworking.


Business Unit:  GBU Energy Solutions
Division:  ES Tractebel L2
Contract Type:  Permanent
Job Type:  Full - Time
Professional Experience:  Skilled ( >3 experience <15 years)
Education Level:  Master's Degree