Design Extension Conditions and the Concept of Practical Elimination in the Design of Nuclear Power Plants

Abstract

The objective of this Safety Guide is to provide recommendations for the design of new nuclear power plants on the application of selected requirements 1 INTERNATIONAL ATOMIC ENERGY AGENCY, Safety of Nuclear Power Plants: Design, IAEA Safety Standards Series No. SSR‑2/1, IAEA, Vienna (2012). 2 An ‘early radioactive release’ in this context is a release of radioactive material for which off‑site protective actions are necessary but are unlikely to be fully effective in due time. A ‘large radioactive release’ is a release of radioactive material for which off‑site protective actions that are limited in terms of times and areas of application are insufficient for protecting people and the environment [1, 2]. 3 For a definition of the term ‘practical elimination’, see the Definition section at the end of this publication.