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Yes, I understand that you can't just turn them "off." It's easiest just to say that it's shut off if it's unable to do anything really.

I think you missed everything in my previous post. All new designs passively cool. You can have safe (comparative to coal and gas) nuclear power.

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I should have been more clear, a lot of designs passively cool the reactor / primary loop, but they don't have long term 100% passive cooling on the secondary loop. Though a counter example would be welcome.

No, you're right. They have a water pool that cools the secondary loop. That will need refilling after a few days, 72 hours for the ESBWR iirc.

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