1The term ‘facility’ means buildings and their associated land and equipment, including the surface and subsurface soil, and any surface or subsurface water or aquifers. In this Safety Guide, the term ‘facility’ is used with a limited scope, to cover the types of facilities considered in this Safety Guide, as described in paras 1.14 and 1.15

2The term ‘permanent shutdown’, as used in this Safety Guide, means that the facility has ceased operations and operation will not be recommenced.

3The term ‘safe enclosure’ means the period during the implementation of the deferred dismantling strategy in which the facility is placed and maintained in a safe, long term storage condition until decontamination and dismantling actions are performed.

4INTERNATIONAL ATOMIC ENERGY AGENCY, Decommissioning of Nuclear Power Plants and Research Reactors, IAEA Safety Standards Series No. WS-G-2.1, IAEA, Vienna (1999).

5INTERNATIONAL ATOMIC ENERGY AGENCY, Decommissioning of Nuclear Fuel Cycle Facilities, IAEA Safety Standards Series No. WS-G-2.4, IAEA, Vienna (2001).

6Draft nuclear security guidance on security during the lifetime of a nuclear facility is in preparation

7Secondary radioactive waste is a by-product from the processing of primary radioactive waste.

8The definition of the mechanism to provide adequate financial resources could be the responsibility of other governmental organization

9For example, new hazards might arise during size reduction using a diamond wire system, where sharp edges are generated, and a number of additional control measures might need to be adopted, such as the application of protective covers.