The effect of radiation on helium coolant

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Helium coolant exhibits extremely high stability in the radiation environment of nuclear reactors, and is recognized as a gas coolant with excellent radiation resistance. Key advantages: As a monatomic inert gas, helium does not undergo irradiation decomposition in the strong radiation field of reactors, and it is also hardly activated by neutrons to become highly radioactive. Compared to other gas coolants such as carbon dioxide, it helps to significantly reduce the generation of secondary radioactive waste and simplifies operation and maintenance procedures. Related additional features: It has an extremely low neutron absorption cross-section, so it hardly causes any reactive changes under irradiation. It also does not undergo chemical reactions with the graphite and metal structural materials in the reactor, nor does it produce any corrosion-related activated products, thereby ensuring the long-term stable operation of the primary system.