Boiling fuel fast neutron nuclear reactor

A method to generate heat energy for electricity form a molten salt fuel fast neutron nuclear reactor, the method comprising the following steps:

• feeding nuclear fuel containing fissionable molten salt that can sustain nuclear chain reaction into a reactor to reaches criticality in the reactor core;
• generating heat from the criticality chain reaction while heating the fissionable molten salt fuel;
• boiling portion of the feasible molten salt fuel with the generated heat to generate salt fuel gas;
• capturing the generated salt fuel gas in an enclosure which is open at it's bottom within the reactor core while reducing the criticality;
• controlling the reactor criticality by the temperature based balance between the condensation and evaporation of the fissionable molten salt fuel;
• extracting heat from the liquid phase molten salt nuclear fuel.

A system to generate heat energy for electricity, comprising:

• a molten salt fuel fast neutron nuclear reactor,
• wherein the reactor comprises:
• a low pressure reactor core containing liquid fissionable molten salt in a bottom and a vapor feasible molten salt above the liquid feasible molten salt level where the liquid and gas phases are at an equilibrium the fissionable molten salt saturate evaporation temperature where the liquid liquid feasible molten salt in it's bottom is critical and maintain a nuclear chain reaction generating heat where the liquid phase and gas phase are in directed contact equilibrium separated by a surface maintained by gravity;
• and
• a heat exchanging apparatus for recovering heat from the liquid molten salt.