5.46. In Ref. [22], two approaches are set out for showing whether constraints are satisfied: (i) aggregation of risk by combining doses and their probabilities of occurrence; or (ii) separate presentation of the dose and its corresponding probability of occurrence. In an aggregated approach, the total risk from all credible processes that may give rise to doses to future individuals is compared with the risk constraint. In a disaggregated approach to doses and their probabilities, the radiological significance can be evaluated from separate consideration of the resultant doses and their probability of occurrence. It should be noted that this second approach does not necessitate precise quantification of the probability of occurrence of particular scenarios, but rather an appreciation of their radiological consequences in reference to their estimated probability of occurrence. Other considerations, such as the duration or the spatial extent of the calculated doses or risks, may also be taken into account in evaluating the significance of each scenario. Although a similar level of safety can be demonstrated by either of these approaches, more information may be obtained for decision making purposes from separate consideration of the probability of occurrence of a particular situation giving rise to a dose, and the resulting dose.