GB/T 10253-2012

This standard specifies the technical requirements, test methods, and inspection rules for equipment designed to continuously or periodically monitor radionuclide concentrations in liquid effluents from nuclear facilities and in surface water bodies. It is applied in environmental radiation monitoring around nuclear power plants, research reactors, and other nuclear installations to ensure compliance with discharge limits and to protect public health and the environment. The standard covers detection systems for gamma-emitting radionuclides, providing performance criteria for sensitivity, accuracy, and reliability under field conditions.