EBC (Environmental Barrier Coating) may be used for the protection of graphite inside the nuclear reactor based on nuclear fusion. If it is true then, what type of EBC is used there. If the statement is not true then, why it (EBC) is not used there.
Carbon components as graphite or CFC are no longer considered in Nuclear fusion due to their tendency to create hydrocarbons that may trap radiative tritium in large amounts. That's why only tungsten or its alloys is intended for the plasma facing components of ITER at present. Being a superconductor device, a cryostat surrounds the reactor. A concrete barrier is used for biological protection among other safety protocols...