The High Temperature Test Facility (HTTF) is a one-quarter scale test facility model of the Modular High Temperature Gas Reactor. The facility is capable of operation at 850oC (well mixed helium) with a maximum operating pressure 0f 0.8 Mpa . The nominal working fluid is helium with a heater power of approximately 600 kW although other gases can be used. The facility is configured to simulate a variety of postulated depressurized conduction cool down, pressurized conduction cool down and normal operations events. Specifically, the HTTF consists of:

  • Vessel with 600kW electrically heated prismatic block core simulator
  • Ceramic reflector and core regions
  • Gas circulator
  • Forced flow cavity cooling system
  • Break valves
  • Confinement simulation tank Instrumentation package
  • Complete data acquisition system