Article | REF: BN3236 V1

Small Modular Reactors

Author: Jacques CHÉNAIS

Publication date: May 10, 2023

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1. Background and current situation

The development of SMRs is based on a substantial background of power reactors and naval propulsion reactors in service (or which have been in service in the past), but also on all the studies and developments carried out in the various reactor technologies. Depending on the type of reactor chosen, the technological developments may be more or less substantial, and all of them face challenges to guarantee their economic success.

1.1 Sectors and projects

Since the beginning of the nuclear adventure, almost every possible type of fission reactor has been explored. Projects differed according to the choice of fuel and its enrichment in 235 U, the moderator (for thermal neutron reactors) and the coolant. However, not...

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