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tauofthemachine t1_jc4ravu wrote

>Why there weren’t mechanical limits on the control rods equipped with followers or other system interlocks is beyond me.

I believe the answer to that is in the book "Atomic accidents" By James Mahaffey. Apparently there actually were safety systems like that, but in preparation for the safety test they had a special switch installed which disabled them.

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Hiddencamper t1_jc4rk1f wrote

They disabled the reactor trip system. But still typically with actual reactivity controls you have some other interlocks.

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