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Please use this identifier to cite or link to this item: http://elibrary.nnra.gov.ng/jspui/handle/123456789/533
Title: Decommissioning
Authors: I A E A
Keywords: Radioactive decay
Nuclear Facilities
Radioactive material
Safety
Issue Date: 2020
Publisher: NNRA Library
Description: Decommissioning is the administrative and technical actions taken to allow the removal of some or all of the regulatory controls from a nuclear facility or Decommissioning is the process of dealing with redundant nuclear facilities that have reached the end of their operational life. The objective of decommissioning a nuclear installation is either: to return the nuclear site to an unrestricted de-licensed condition; or return the site to a state so that the land can be used for suitable alternative uses and to Protect human health and the environment from the radiological & non-radiological hazards resulting from the shutdown facility. It ensures that decommissioning options are taken: Final shut down, Removal of radioactive sources including liquids, Decontamination, Dismantling and clean-out, Immediate or deferred dismantling of structures. Successful decommissioning rely on careful and organized planning and decision making based upon factual data and information A Decommissioning Plan(DP) should be prepared for each facility The extent, content and degree of detail in the Decommissioning Plan(DP) depends on the complexity and hazard potential of the nuclear installation Decommissioning Plan(DP) should be consistent with regulatory requirements. Decommissioning is usually conducted in three stages: Stage 1 - Post-operational clean out where the bulk of the radioactive material, such as fuel, is removed from the facility. Stage 2 - Initial dismantling and removal of contaminated parts or care and maintenance to allow radioactive materials to decay. Stage 3 - Dismantling of the facility, demolition of the structure; and remediation of land and water to meet an agreed end-state for future use. Decommissioning activities result in various types and quantities of radioactive material, which may be considered as waste, or which may be recycled or reused. Consideration of appropriate strategies for its minimization and long-term management are important issues for decommissioning. Facilitating Decommissioning, Decommissioning Techniques, and Financial Assurance for Decommissioning, Critical Tasks of Decommissioning, and Completion of Decommissioning were also discussed in this presentation.
URI: http://elibrary.nnra.gov.ng/jspui/handle/123456789/533
Appears in Collections:Training Courses of BPTC

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