The very high temperature reactor concept uses a graphite-moderated core with a once-through uranium fuel cycle, using helium or molten salt as the coolant.
This reactor design envisions an outlet temperature of 1,000 °C.
The reactor core can be either a prismatic-block or a pebble bed reactor design.
The high temperatures enable applications such as process heat or hydrogen production via the thermochemical iodine-sulfur process.
It would also be passively safe.