Chapter 2: Introduction to Nuclear Safety
Strengthened safety requirements for the design of NPPs introduced with SSR-2/1 (Rev. 1)
A large majority of currently operating NPPs across the world, also indicated as Generation II, were designed and built in the 1960s, 70s and 80s, and were hence aligned with previous requirements which were into force well before the publication of SSR-2/1 (Rev.1) in 2016.
As a consequence, SSR-2/1 (Rev. 1) states that it might not be practicable to apply all the requirements of this Safety Requirements publication to nuclear power plants that are already in operation or under construction. In addition, it might not be feasible to modify designs that have already been approved by regulatory bodies [
] (para 1.3).
A detailed discussion of the evolution of safety
requirements in SSR-2/1 (Rev. 1) with respect to
previous standards is beyond the scope of this Toolkit and interested readers may obtain more information on this topic on specific publications:
Read more:
SSR-2/1 (Rev. 1),
TECDOC-1791.
The following is an excerpt of the most relevant novelties introduced with SSR-2/1 (Rev. 1) with respect to previous safety requirements for the design of NPPs (unless otherwise indicated, the novelties indicated in the following paragraphs are to be understood with respect to NS-R-1, which was published in 2000).
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