this post was submitted on 25 Jul 2023
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Anyone know what hot shutdown mode is? Is it like sleep on a computer vs shutdown? I assume from the name that a hot shutdown state still requires cooling.
Since shutdown, one of the reactors has been run in a mode where it is generating some steam (but I believe no or not enough electricity -- this is supplied by external power lines) for safety and maintenance purposes. Currently this is reactor 5. The russians are now switching it to reactor 4 (this being the one that Ukranian Intelligence alleged was rigged with explosives, and the one the russians won't let the IAEA fully inspect).
From the context provide in the article I surmise that 'Hot Shutdown' is a condition where a reactor is on and generating steam for use with plant processes only and not producing power for external use. It is unnecessary to have any of the reactors in a Hot Shutdown state as the steam needed can be generated via mundane boilers (which would be safer and is the IAEA's recommendation).