Waste Management, Radioactive


Waste Management, Radioactive :

(1) All administrative and operational activities involved in the handling, pretreatment, treatment, conditioning, transport, storage and disposal of radioactive waste. Radioactive Waste Management: Conditioning: Those operations that produce a waste package suitable for handling, transport, storage and/or disposal. Conditioning may include the conversion of the waste to a solid waste form, enclosure of the waste in containers and, if necessary, providing an overpack. Immobilization: Conversion of waste into a waste form by solidification, embedding or encapsulation. Immobilization reduces the potential for migration or dispersion of radionuclides during handling, transport, storage and/or disposal. Overpack: A secondary (or additional) outer container for one or more waste packages, used for handling, transport, storage or disposal. Packaging: Preparation of radioactive waste for safe handling, transport, storage and/or disposal by means of enclosing it in a suitable container. Predisposal: Any waste management steps carried out prior to disposal, such as pretreatment, treatment, conditioning, storage and transport activities. Predisposal is used as a contraction of pre-disposal radioactive waste management, not a form of disposal. Pretreatment: Any or all of the operations prior to waste treatment, such as collection, segregation, chemical adjustment and decontamination. Processing: Any operation that changes the characteristics of waste, including pretreatment, treatment and conditioning. Segregation: An activity where waste or materials (radioactive or exempt) are separated or are kept separate according to radiological, chemical and/or physical properties which will facilitate waste handling and/or processing. Treatment: Operations intended to benefit safety and/or economy by changing the characteristics of the waste. Three basic treatment objectives are: Volume reduction; Removal of radionuclides from the waste; and Change of composition. Treatment may result in an appropriate waste form. If treatment does not result in an appropriate waste form, the waste may be immobilized. Volume Reduction: A treatment method that decreases the physical volume of a waste. Typical volume reduction methods are mechanical compaction, incineration and evaporation. Should not be confused with waste minimization. (2) [All activities, including decommissioning activities, that relate to the handling, pretreatment, treatment, conditioning, storage, or disposal of radioactive waste, excluding off-site transportation. It may also involve discharges

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