A study on the clearance of metal frames of waste filters from ventilation system in nuclear power plant

The ventilation filters from ventilation system in the control area of nuclear power plant will be regularly replaced. In general, the metal frame of the waste filters would not be activated and were expected with a low radiation level, thereby it could be recycled or reused after a systematic clearance assessment. As a regulatory requirement in China, this kind of assessment play a vital role in the radioactive waste management, and a detailed scheme should be established based on long-terms of experience and the unit-specific characteristics. Focus on this, a clearance assessment scheme for the metal frames in nuclear power plants was established in this paper, which would present experience in the radioactive waste management for the nuclear power plant operator and the authorities. (author)