Jules Horowitz Reactor (JHR)

Experimental reactor, material testing and radioisotope production reactor, owned by the CEA.


Main services:

  • Prime contractor of the facility on behalf of the CEA including design of the facility
  • Designer and manufacturer of primary equipment (reactor block)

Jules Horowitz Reactor

The JHR is an experimental reactor for material testing and production of 100 MWth radioisotopes belonging to CEA | JHR project | © RAZEL (courtesy CEA)

Main stages:

  • 2002 : Beginning of design studies
  • August 2009: First concrete cast
  • December 2013: Installation of the reactor dome
  • March 2017: End of civil engineering work for the reactor building
  • May 2018: Shop test assembly of the pile block