1The term ‘facility’ as used in this Safety Guide means a facility with its associated land, buildings and equipment in which radioactive material is used, processed, handled or stored on such a scale that consideration of safety is required.

2The term ‘site’ as used in this Safety Guide means land together with any buildings or other structures being considered for release from regulatory control.

3The term ‘practice’ means any human activity that introduces additional sources of exposure or exposure pathways or extends exposure to additional people or modifies the network of exposure pathways from existing sources, so as to increase the exposure or the likelihood of exposure of people or the number of people exposed.

4The term ‘cleanup’ as used in this Safety Guide means any measures that may be carried out to reduce the radiation exposure from existing contamination through actions applied to the contamination itself (the source) or to the exposure pathways to humans.

5The term ‘intervention’ means any action intended to reduce or avert exposure or the likelihood of exposure to sources that are not part of a controlled practice or that are out of control as a consequence of an accident.

6A ‘critical group’ is a group of members of the public that is reasonably homogeneous with respect to its exposure for a given radiation source and is typical of individuals receiving the highest effective dose or equivalent dose (as applicable) from the given source.

7 The cleanup plan is part of the decommissioning plan and is not intended to cover all aspects relating to decommissioning.