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What are moon specific hurdles to a fission reactor?

  • low gravity
  • no atmosphere

Apparently it's more difficult to shed heat in a vacuum. Are some coolants more advantageous on the moon than others?

https://en.wikipedia.org/wiki/Safe_affordable_fission_engine

https://en.wikipedia.org/wiki/Kilopower

https://en.wikipedia.org/wiki/SP-100

I ask because there's been a fair amount of discussion of moving away from using water, at least for civilian reactors.

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  • $\begingroup$ For large amounts of power we should ask @KimHolder. For hundreds of kW or less an array of modest kilopower type reactors appear to have this all thought out. $\endgroup$ – uhoh Oct 22 '20 at 5:09

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