Spherical fuel assembly and its manufacture for gas-cooled high-temperature ball-puffed nuclear reactors (HTR)

摘要

The present invention relates to the new design and manufacture of BE spheres that meet the requirements of the HT globular nuclear reactors of the following generations. According to the invention, a fuel-free shell of the BE balls made of silicon carbide (SiC) and / or zirconium carbide (ZrC) and natural graphite and graphitized petroleum coke is used, which layer has a mean nominal thickness of not more than 5 mm and preferably only 3 mm.