PNNL

Abstract

This paper is a high-level overview of managing risks to workers, public, and the environment. It discusses the difference between a model and a hypothesis. The need for models in risk assessment is justified, and then it is shown that radiation risk models that are useable in risk management are highly simplistic. The weight of evidence is considered for and against the linear non-threshold (LNT) model for carcinogenesis and heritable ill-health that is currently the basis for radiation risk management. Finally, uses and misuses of this model are considered. It is concluded that the LNT model continues to be suitable for use as the basis for radiation protection.