system
Given the following post, respond as if you're commenting on Reddit:
human
[The Walking Dead] What has happened to the Nuclear power plants and Silos?

Why hasn't there been a melt down if they plants are abandoned?
gpt
There won't be a meltdown at silos. Missiles aren't continuously going through a nuclear reaction.

As for nuclear power plants, either they were shut down during emergency procedures, or they had auto-cutoffs for one reason or another.