Glossary of Terms |
E
- encapsulation
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1. a waste conditioning method for the immobilization of dispersed solids (e.g. ash or powder) by mixing them with a matrix material in order to produce a waste form. See also macroencapsulation.
2. the emplacement of a solid waste form (e.g. spent fuel assemblies) in a container. - environmental assessment
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an evaluation of the issues and concerns important to a project/activity, alternate means of accomplishing a project/activity, and estimates/projections of any adverse affects on the environment of each of those alternatives
This is a general definition, it may vary from country to country. - environmental impact assessment
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a systematic consideration of the likely significant impacts upon the environment that would occur as a result of an activity or event
This is a general definition, it may vary from country to country. - environmental impact statement
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a report detailing the findings of an environmental impact assessment
This is a general definition, it may vary from country to country. - environmental risk assessment
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a systematic evaluation of the risks associated with hazards to human health and safety and the environment, arising from human activities capable of impacting on the environment on a continuous or accidental basis
This is a general definition, it may vary from country to country. - evaporation
- concentration of a liquid by conversion of some fraction of the volatile material content to the vapour state by latent heat - a treatment method used to concentrate some types of radioactive solutions
- exempt waste
- applies to waste that is released from regulatory control in accordance with exemption principles
- exemption
- the determination by a regulatory body that a source or practice need not be subject to some or all aspects of regulatory control on the basis that the exposure (including potential exposure) due to the source or practice is too small to warrant the application of those aspects