Construction and Lean Management of Filters Cycle Life Cycle in Nuclear Safety-Related Ventilation Systems

Abstract Nuclear safety-related ventilation systems of nuclear power plants are equipped with a large number of particle filters an d iodine filters to filter radioactive dust, aerosols and gaseous radioactive iodine. These disposable nuclear grade ventilation filters have high unit price and large annual consumption. The used filters as low and medium level radioactive waste, due to the inability to achieve reuse and effective capacity reduction treatment, resulting in a continuous shortage of low- and medium-level radioactive storage capacity in nuclear power plants. Post-processing is mainly compression temporary storage, which not only has a high cost of disposal and storage, but also has a great impact on the environment, but also has a serious waste of metal, activated carbon and other resources, which is a common problem in the industry. In recent years, in response to the national principle requirements of reducing nuclear radioactive waste and carrying out recycling, Daya Bay Nuclear Power has creatively put forward the concept of rebuilding the whole life cycle of nuclear ventilation filters on the basis of absorbing the experience of the same industry. Through the development and use of a full series of nuclear-grade reuse ventilation filters and related recycling technologies and equipment, and the lean management of the whole life process of nuclear-grade ventilation filters, the transition of nuclear-level ventilation filter from original extensive one-off life cycle management to recycling and lean life cycle management has been realized in Daya Bay Nuclear Power Base. It has embarked on a road of conservation, recycling and sustainable development.