Evolutionary Pressurized Reactors (EPRs)

The EPR is a third generation pressurized water reactor (PWR) design.  In Europe this reactor design was called European Pressurized Reactor, and the internationalized name was Evolutionary Power Reactor, but it is now simply named EPR.

EPR units in the world

Four EPR units are under construction. The first two, in Finland and France whereas construction commenced on two Chinese units in 2009 and 2010. Two units at Hinkley Point in the United Kingdom received final approval in September 2016 and are expected to be completed by 2025.

Design

The main design objectives of the third generation EPR design are increased safety while providing enhanced economic competitiveness through improvements to previous PWR designs scaled up to an electrical power output of around 1650 MW  with thermal power 4500 MW.

The reactor can use 5% enriched uranium oxide fuel, reprocessed uranium fuel and 100% mixed uranium plutonium oxide fuel. The EPR was designed to use uranium more efficiently than older Generation II reactors, using approximately 17% less uranium per unit of electricity generated than these older reactor technologies.

Protection measures against accidents

1 . Four independent emergency cooling systems, each providing the required cooling of the decay heat that continues for 1 to 3 years after the reactor’s initial shutdown .
2 . Leaktight containment around the reactor.
3 . An extra container and cooling area if a molten core manages to escape the reactor .
4 . Two-layer concrete wall with total thickness 2.6 m, designed to withstand impact by aeroplanes and internal overpressure.

EPR in India – Agreement Between NPCIL and EDF of France

Nuclear Power Corporation of India Limited (NPCIL) and Electricite de France (EDF) of France have on March 10, 2018 signed an Industrial Way Forward Agreement for implementation of six nuclear power reactor units at Jaitapur, Maharashtra with a total capacity of about 10,000 MW.