All structured descriptions of SMR design features used to achieve defence in depth were prepared and reviewed first hand by the designers of SMRs in Member States, in communication with international experts and the IAEA Secretariat.

Appendix 1 of this report was elaborated upon through participation of research teams involved in development of methodologies for the reliability assessment of passive safety systems in advanced reactors.

The introductory and cross-cutting sections were developed by international experts and the Secretariat, and reviewed by SMR designers in Member States. The conclusions were elaborated through the effort of the two IAEA technical meetings convened in June 2005 and October 2006.