Activities taken to reduce the potential health and safety impacts of commercial and DOE-contaminated facilities, including removing a unit from operation, decontamination, entombment, dismantlement, or conversion of the site to another use.
The process of dismantling nuclear power plants after they have stopped producing power, including disposal of radioactive waste materials, the destruction or resale of plant equipment, and the return of the power plant site to its original state.
The term decommissioning is used in a generic sense to cover all of the procedures undertaken once a nuclear installation has ceased operating. Decommissioning therefore covers processes such as defuelling reactors, cleaning and making safe an installation (which could include a long period of safe storage on site), dismantling, removal work and waste conditioning prior to storage or disposal.
The process whereby a power station, at the end of its economic life, is taken permanently out of service and its site made available for other purposes. In the case of a nuclear station this comprises 3 different states of clearance. Immediately after the final closure, radioactive material such as nuclear fuel and operational waste is removed; the buildings surrounding the reactor shield are dismantled; and finally the reactor itself is dismantled.
The removal from service of facilities such as processing plants, waste tanks, and burial grounds, and the reduction or stabilization of radioactive contamination. Decommissioning concepts include: Decontaminate, dismantle, and return area to original condition without restrictions. Partially decontaminate, isolate remaining residues, and continue surveillance and restrictions.
Demolition, dismantling, removal, obliteration, or disposal of a deteriorated or otherwise unneeded asset or component, including necessary cleanup work. This action eliminates the deferred maintenance needs for the fixed asset. Portions of an asset or component may remain if they do not cause problems or require maintenance.
Actions taken in the interest of health, safety, security and protection of the environment, to retire a nuclear facility permanently from service. May also be used to refer to the cleaning of a radioisotope laboratory so that it may be removed from a radioisotope permit.
The removal of a nuclear facility from service and the reduction of residual radioactivity to a level that permits the release of the property for unrestricted use and termination of the Nuclear Regulatory Commission (NRC) license.
All stages following the shutdown of a nuclear facility, from final closure through the removal of radioactivity from the site, including physical dismantling and decontamination of all non-reusable facilities and equipment.
The process of closing down a nuclear reactor, removing the spent fuel, dismantling some of the other components, and preparing them for disposal. Term may also be applied to other major nuclear facilities.
The permanent removal of a facility from active service. In the case of a nuclear plant this includes safely closing, and possibly dismantling (or otherwise disposing of) the existing facilities at the end of their service life.
undertaken in order to end operations of a gas pipeline, associated plants and equipment. It may occur at the end of the life of the plant, following an accident, for technical or financial reasons, and/or on environmental or safety grounds.