With great energy comes great responsibility. If nuclear reactors reach 1000 degrees, they start taking damage and spew fire. If an active reactor is removed or destroyed, it will cause a nuclear explosion and create massive pollution.
Had a bug, and my game crashed until I removed the mod, which thankfully didn't kill my save. I have a screenshot of the bug that popped up if you have an email that you can give me and I'll drop it to you.