Reactor pressure vessel


Thick-walled cylindrical steel vessel enclosing the reactor core in a nuclear power plant. The vessel is made of special fine-grained low alloy ferritic steel, well suited for welding and with a high toughness while showing low porosity under neutron irradiation. The inside is lined with austenitic steel cladding to protect against corrosion. For a 1,300 MWe pressurized water reactor, the pressure vessel is about 12 m high, the inner diameter is 5 m, and the wall of the cylindrical shell is about 250 mm thick. The overall weight amounts to approx. 530 t without internals. The vessel is designed for a pressure of 17.5 MPa (175 bar) and a temperature of 350 °C.








ENS conferences


RRFM 2015

RRFM 2015
19-23 April 2015,

Topfuel 2015

TopFuel 2015
13-17 Sept. 2015
Zurich, Switzerl.