Advantages And Disadvantages Of Plant Decommissioning
3、Impacts in plant decommissioning phase P348 For the purpose of dismantling, a decommissioning plan shall be prepared in order to ensure that the radioactive components of the plant will not impose a hazard on the environment.
According to the International Atomic Energy Agency（IAEA）, there are three scenarios of nuclear power plant decommissioning: Immediately demolished, safely sequestrated and landfill. Picton nuclear power plant will use the first scenario and divide it into three phases. The first stage is guardianship and sequestration. This phase is to wait for the radioactive decay. In this phase, the first contamination barrier remains stable, but the mechanical opening system will be permanently sealed, and the containment vessel buildings should keep closed. Therefore, nuclear power plant keeps in good conditions in this phase, and the contaminated buildings maintain a proper state as residual hazardous substances, will not have a significant impact on the environment. However, workers still need to check if there are leaks in the first contamination barrier and the contaminated plant on time. The second stage is for partial demolition and site use restriction. In this phase, the first contamination barrier will be reduced to the smallest scales, and dismantle the parts easy to disintegrate. So, at this stage, there is little impact on environment. And the supervision surrounding barrier can properly relax. The
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Nuclear Waste Muller Summary
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