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Fuck off with the double posts.

I read the part about the use of a graphite moderator and that doesn’t sit well with me. Graphite has a positive temperature coefficient of reactivity and that does not promote stability of reactor operation. For example, if power is increased then that will raise temperature. When the temperature of the graphite increases, that adds positive reactivity which raises power. Then temperature goes up and then power, etc. it’s incredibly easy to cause that reactor to “run away”. Most reactors use water as a moderator which has a negative temperature coefficient of reactivity. That means if power goes up, temperature will go up but when that happens reactivity will go down which will lower power. This keeps things stable and manageable even in an abnormal situation. Graphite moderators are bad. Chernobyl showed us how bad it can be.

Also, sodium cooled reactors aren’t all that safe. Have you seen what happens to sodium when it hits water? So let’s put that through tubes that go through a boiler to make steam and hope there isn’t a tube leak. Um, how about no?