Pebble bed reactor
Gas-cooled high-temperature reactor with a core of spherical fuel and
moderator (graphite) elements. The decommissioned nuclear power plants
AVR in Jülich and THTR-300 in Uentrop had a pebble bed reactor.
The THTR-300 contained about 600,000 spherical fuel and moderator elements.
The fuel elements consist of a kernel of U-235 and thorium surrounded
by a graphite matrix of a diameter of 6cm.
Schematic representation of the spherical fuel element
of a pebble bed reactor
Nuclear power plant with pebble bed reactor
11 - 15 March 2018
30 September - 04 October 2018
Prague, Czech Republic