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> and far less capacity to safely manage nuclear power.

A common point of design (or at least hope) for SMR is for the design itself to be sealed and fail-safe, no operators and no management, when fuel runs your you replace the reactor and send to to the factory for refurb.

Think smartphone, not lamps-based computer.



AIUI, microreactors are not SMRs.

The modularity of SMRs comes from being able to build the different modules in factories, but the SMR would still be assembled on-site inside a building/facility.

Source: https://omegataupodcast.net/359-modern-fission-reactors/

Westinghouse's current SMR design is IRIS, which is a PWR. They cancelled their previous design.


Could it be safe even with actively malicious people?


..maybe. For a given definition of malicious. The flip side of the eye-wateringly expensive and inefficient fuel they're proposing is it's very hard to get the radioactive stuff out of the SiC shell, even with explosives. And getting it to go into thermal runaway would require some exotic materials that can out-last the SiC as it melts.

Spreading tiny fuel pellets everywhere would still be horrible, but far more contained.

The dangers of this would be more diffuse. Large amounts of high level waste compared to a conventional reactor, double the mining, fuel fabrication facilities that are one hopper jam away from going chernobyl. If it were accepted, the industry would get complacent about cracked pellets and Kr-85 or other hard to contain fission byproducts would slowly accumulate everywhere and we'd have to spend 50 years fighting misinformation about how radiation is good for you while it builds up irreversibly.




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