Changes

== Previous glossary entries ==

A band of dose rate within which there is likely to be some chance of deleterious effects of ionising radiation occurring to individuals of that type of Reference Animal or Plant (derived from a knowledge of defined expected biological effects for that type of organism) that when considered together with other relevant information can be used as a point of reference to optimise the level of effort expended on environmental protection dependent upon the overall management objectives and the relevant exposure situation.