What is coolant?
A nuclear reactor coolant is usually water, but sometimes a gas or liquid metal. This coolant circulates past the reactor core, to absorb the heat that it generates. The heat is carried away from the reactor, and is then used to generate steam. Most reactors have a cooling system that is physically separated from the water that will be boiled to produce pressurized steam for the turbines.
A nuclear reactor coolant is usually water, but sometimes a gas or liquid metal. This coolant circulates past the reactor core, to absorb the heat that it generates. The heat is carried away from the reactor, and is then used to generate steam. Most reactors have a cooling system that is physically separated from the water that will be boiled to produce pressurized steam for the turbines.