The EPRTM reactor is designed to keep its surrounding populations and environment safe in the event of internal and external hazards. Below are some of the features that make its optimal safety levels possible:

Resistance to major hazards

  • A robust containment building to withstand direct impact and resulting vibrations from an external attack
  • A concrete base mat with equipments localized at lowest level possible to face the event of an earthquake

Robustness of cooling capability

  • Four independent safety systems that are physically separated and each capable of performing all safety functions, 2 of them being protected by an airplane crash resistance shell, 2 of them being protected by physical localization
  • Large cooling water inventory, able to cool the system directly through the primary as well as through the secondary system
  • Diversified, separated and protected emergency power generators ensuring power supply to the cooling systems in case of power disruption
  • Protected and separated reactor fuel pool cooled by a redundant and dedicated system
  • Flexible monitoring ensured by digital I&C in alignment with the principles of redundancy, diversity and separation
  • More than 7 days of autonomy of on-site water reserves for decay heat removal.

Prevention of environmental damage

  • Enhanced pressure and hydrogen control thanks to additional safety valves and passive autocatalytic recombiners
  • Advanced molten core retention in the unlikely event of a core meltdown
  • Leak-tight containment forming a barrier to radioactivity and with the capacity to withstand high pressure and temperature

The EPR™ reactor safety features in detail


EPR reactor: maximum safety (3D animation)

The EPR reactor is part of the latest Generation III+. That means: Safety has once again increased compared to today’s reactors. Learn first-hand how an EPR reactor works. And what we do so that the power can be generated as safely as possible.

EPR™ Reactor - Robustness to Extreme Hazards