About this Research Topic
After three quarters of a century since the exploitation of nuclear fission to produce energy, Nuclear Reactor Safety (NRS) constitutes an stablished technology. A key feature is the continuous updating of constituting elements following progress in knowledge. The unfortunate situation is occurring that the production of electricity by nuclear fission is on the decline in the countries that have contributed most to the NRS development. The bond between science advancements and NRS improvements is broken or weakened.
During the last two or three decades, physical mechanisms which endanger the integrity of nuclear fuel in case of accidents, have been characterized as part of the design basis envelope; disasters occurred in Chernobyl and in Fukushima. Small and Modular Reactors appeared on the horizon. The Gen IV reactor projects are progressing but no take-off towards construction is in sight, and the need of important modifications in the bases of NRS is felt.
This Research Topic intends to contribute to the discussion on how to adjust the bases of Nuclear Reactor Safety (NRS) to the current technology and market conditions, by providing ideas of eminent scientists and decision makers.
The well-established areas of protection and mitigation are concerned, with the interface put at the conditions when, in case of accident, the core loses its structural integrity. The scope for the submitted manuscripts is protection rather than mitigation. Contents of manuscript is preferred in the areas below.
1) Large Break Loss of Coolant Accident within the design basis envelope
2) Small Modular Reactors (SMRs), considering their potential to spread in various countries
3) Passive safety systems for both large units and SMR
4) Advances on nuclear waste safety
5) Low probability events with expected large consequences.
6) Innovative approaches in NRS as proposed hereafter:
An owner is responsible for damage caused by nuclear facility when accidents occur having probabilities higher than the agreed ultimate probability, while the damage of events with frequency lower than the ultimate probability should be taken on by governments and by society in general. Determining the magnitude of a hazard (of particular class) at ultimate probability would be a subject of probabilistic hazard analyses (analogous, for example, to probabilistic seismic hazard analysis (PSHA)) and methodological frameworks would need to be developed and accepted.
7) Impact of radiations upon humans and environment and related safety
Keywords: Nuclear Reactors, Fission Energy, Current LWR, Small and Modular Reactors, Design Basis Accident, DSA and PSA, Severe Accident
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.