Heat pipe molten salt fast reactor with stagnant liquid core

A nuclear reactor for operative connection to a power conversion system, the reactor comprising:

• a containment vessel;
• a reactor core housed within the containment vessel;
• a neutron reflector spaced froze the containment vessel and positioned between the core and the containment vessel;
• a livid fuel comprised of a nuclear fission material dissolved in a molten salt enclosed within the core;
• a plurality of heat transfer pipes, each pipe having a first end and a second end, the first end being positioned within the reactor core for absorbing heat from the fuel;
• a heat exchanger external to the containment vessel, the heat exchanger receiving the second end of each heat transfer pipe for transferring heat from the core to the heat exchanger;
• and
• at least three reactor shut down systems comprising a first shut down system, a second shut down system, and a third shut down system, the first shut down system comprising:
• a rotatable member mechanism comprising:
• a plurality of rotatable members positioned evenly within the neutron reflector, each rotatable member having a neutron absorber section and a non-absorber section;
• and,
• a rotating drive mechanism operatively connected to each rotatable member for rotating the rotatable member to move the neutron absorber section to one of a first position facing the core and a second position facing away from the core;
• the second shut down s stem comprising:
• a melt-plug mechanism comprising:
• an opening in the containment vessel;
• a chamber fluidly connected to the opening in the containment vessel;
• a first melt plug, to plug the opening in the containment vessel;
• the first melt plug being made of a material that melts at a predetermined melting temperature deemed to be indicative of unsafe temperature conditions within the reactor core;
• and the third shut down system comprising:
• a central axis extending through the core and a neutron absorber activation system comprising
• a hollow tube defining a cavity and being positioned coaxially to the central axis and extending from an area above the core into the core;
• a gate separating a first portion of the hollow tube above the core from a second portion of the hollow tube within the core;
• a neutron absorber material housed in an unactivated position within the first portion of the hollow tube;
• an activation rod operatively connected to the gate;
• a release member for releasing the actuation rod from the unactivated position to move to an activated position, wherein in the activated position, the actuation rod opens the gate to release the neutron absorber material into the cavity within the second portion of the hollow tube in proximity to the fuel to absorb neutrons from the fuel sufficient to shut down the reactor.