This Roadmap updates the edition published in 2010 to take account of developments since that time including the Fukushima Daiichi accident and the subsequent safety reviews; the shift towards Generation III reactors for nuclear new build; and the economic and financial crises that have both...

Defence in depth (DiD) is a concept that has been used for many years alongside tools to optimise nuclear safety in reactor design, assessment and regulation. The 2011 Fukushima Daiichi nuclear power plant accident provided unique insight into nuclear safety issues and raised questions about the...