A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Material for which no further use is foreseen.
1. For legal and regulatory purposes, waste that contains or is contaminated with, radionuclides at concentrations or activities greater than clearance levels as established by the regulatory body.
It should be recognized that this definition is purely for regulatory purposes, and that material with activity concentrations equal to or less than clearance levels is radioactive from a physical viewpoint, although the associated radiological hazards are considered negligible.
2. [Radioactive material in gaseous, liquid or solid form for which no further use is foreseen by the Contracting Party or by a natural or legal person whose decision is accepted by the Contracting Party, and which is controlled as radioactive waste by a regulatory body under the legislative and regulatory framework of the Contracting Party.] 
3. Material, whatever its physical form, remaining from practices or interventions and for which no further use is foreseen (i) that contains or is contaminated with radioactive substances and has an activity or activity concentration higher than the level for clearance from regulatory requirements, and (ii) exposure to which is not excluded from the Standards. 
waste acceptance requirements:
Quantitative or qualitative criteria specified by the regulatory body, or specified by an operator and approved by the regulatory body, for radioactive waste to be accepted by the operator of a repository for disposal, or by the operator of a storage facility for storage.
Waste acceptance requirements might include, for example, restrictions on the activity concentration or total activity of particular radionuclides (or types of radionuclide) in the waste or requirements concerning the waste form or packaging of the waste.
Classes not in square brackets are those recommended in Safety Series 111-G-1.1 . This classification system is organized to take into account matters considered of prime importance for disposal safety. A number of issues related to waste classification are currently under review.
The other classes listed below (in square brackets) are sometimes used, e.g. in national classification systems, and are mentioned here to indicate how they typically relate to the classes from Ref. .
Other systems classify waste on other bases, such as according to its origin (e.g. reactor operations waste, reprocessing waste, decommissioning waste, defence waste, etc.).
Waste in its physical and chemical form after treatment and/or conditioning (resulting in a solid product) prior to packaging. The waste form is a component of the waste package.
The operating organization of a facility or activity that generates waste.
! For convenience, the scope of the term waste generator is sometimes extended to include whoever currently has the responsibilities of the waste generator (e.g. if the actual waste generator is unknown or no longer exists, and a successor organization has assumed responsibility for the waste).
1. All administrative and operational activities involved in the handling, pretreatment, treatment, conditioning, transport, storage and disposal of radioactive waste.
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.
Decommissioning is considered to be a part of predisposal management of radioactive waste.
Predisposal is used as a contraction of ‘predisposal radioactive waste management’, not a form of disposal. (Coincidentally, however, the predisposal process could also be said to predispose waste towards safe 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:
Treatment may result in an appropriate waste form.
removal of radionuclides from the waste; and
change of composition.
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. 
See package, waste.
Any person who works, whether full time, part time or temporarily, for an employer and who has recognized rights and duties in relation to occupational radiation protection. (A self-employed person is regarded as having the duties of both an employer and a worker.).