Nuclear reactor system arranged to inject material into heat pipes to suppress a fire

A system comprising:

• a nuclear reactor comprising a heat pipe reactor core;
• a plurality of heat pipes, wherein each respective heat pipe comprises an elongated body defining a first end of the respective heat pipe and a second end opposite the first end and an interior cavity therebetween, and wherein the first end and the second end of each respective heat pipe are positioned externally of the heat pipe reactor core such that the heat pipe reactor core engages the plurality of heat pipes between the first end and the second end of the respective heat pipe;
• a heat exchanger device, the heat exchanger device defining an enclosed gas chamber annularly surrounding at least a portion of at least one heat pipe, the enclosed gas chamber comprising an inert gas;
• and
• a first suppressant chamber and a second suppressant chamber, each suppressant chamber containing a fire suppressant material,
• wherein a first valve is positioned proximate the first end of at least one heat pipe of the plurality of heat pipes, the first valve fluidly coupling the at least one heat pipe to the first suppressant chamber,
• wherein the first valve is movable between open and closed positions to regulate a flow of the fire suppressant material from the first suppressant chamber into the interior cavity of the at least one heat pipe,
• wherein a second valve is positioned proximate the first end of the at least one heat pipe of the plurality of heat pipes, the second valve fluidly coupling the enclosed gas chamber to the second suppressant chamber, and
• wherein the second valve is movable between open and closed positions to regulate the flow of the fire suppressant material from the second suppressant chamber into the enclosed gas chamber.