[user104658]

This won't make the area safe, this is being built because the protection put in place after the initial meltdown was only capable of lasting 20 to 30 years before the radiation destroyed it and the area would be facing another potential incident. Think of it as putting a fresh bandage on a wound that's still bleeding profusely.

It's not just the reactor thats a risk in that area... I read a story about two (stupid) men who went into the town and took a car, as everything is just abandonned there. They both died a matter of hours later, as the car itself was radioactive.

In all likelihood; no one will EVER be able to live anywhere near the site.