The THTR-300 ran into trouble because of operational difficulties with its unconventional pebble-bed design. In contrast, this is a very conventional reactor de

The THTR-300 ran into trouble because of operational difficulties with its unconventional pebble-bed design. In contrast, this is a very conventional reactor design. The difference is that the fuel is initially made of about 90% ThO2 and 10% PuO2.