1‘Predisposal’ is a contraction of ‘pre-disposal’; it is not a form of disposal. Terminology used in this publication is defined and explained in the IAEA Safety Glossary [1] (see http://www-ns.iaea.org/standards/safety-glossary.htm).

2Generators of radioactive waste, including organizations carrying out decommissioning activities, and operators of predisposal radioactive waste management facilities are considered to be engaged in the management of radioactive waste. In this Safety Requirements publication they are hereinafter referred to as ‘operator(s)’.

3 The safety case is a collection of arguments and evidence in support of the safety of a facility or activity. The safety case will normally include the findings of a safety assessment, and will typically include information (including supporting evidence and reasoning) on the robustness and reliability of the safety assessment and the assumptions made therein [1].

4The Basic Safety Standards (BSS) [6] establish general and specific requirements for the allocation of responsibilities for the protection of people against exposure to radiation and for the safety of .