Method for decontaminating an oxidised surface of a component or a system of a nuclear plant

摘要

Decontaminating the surface involves treating the oxide layer with a gaseous oxidant such as ozone or nitric oxide. When treating the oxide layer a water film is maintained and a water-soluble oxidant is used. Hot air, hot steam or an external heating device can be used to supply heat to the surface. Following the oxidation treatment the oxide layer can be treated with an aqueous solution of an organic acid.