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A comment on Small nuclear reactors: tiny NuScale reactor gets safety approval. Parent comment

Re:Small nuclear reactors: tiny NuScale reactor gets safety ... by petre on Friday September 04, 2020 @12:39AM (#24371745)
Fukushima is a BWR design using water moderator, closed with a lid bolted on a flange. It uses two pumps. Chernobyl is a RBMK design with graphite moderator and a highly positive void coefficient.

This reactor is a much smaller PWR with a double containment and natural circulation, without these failure modes.

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Re:Small nuclear reactors: tiny NuScale reactor gets safety ... by hansthehorse on Friday September 04, 2020 @08:20PM (#24380301)
In a standard commercial pwr the containment building is a steel shell surrounding the entire system, then there is a void of varying width then that large cement building that you can see when driving by. That building is called the shield building.
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