ABSTRACT
Existing levels of average individual risk in Great Britain are 10-2 per year for death from all causes, and is as low as 2×10-4 for the age group least at risk. This chapter presents illustrative values of the risk of death for individual and societal risk. The values of individual risk represent the fraction of a population who have died or sustained injury in one year. Cumulative frequency versus consequence curves is presented from which a comparison of the societal risk from various activities can be made. The frequency-consequence curve or Complementary Cumulative Distribution Functions (CCDF) is the most common means of representation of societal risk. It has the feature of demonstrating the variation in frequency of occurrence of events according to the magnitude of the consequence. The chapter is concerned with comparison of numerical values for existing societal risk through the use of this common measure.
