The containment building is the last barrier to the radiation getting into the environment.

The fourth layer is the pressure resistant, air tight containment building.

Finally, in 2004, the facility's containment building was brought down by explosives.

Bolan thought he was approaching the bottom of the containment building.

But first he had to do something about the temperature in the containment buildings.

As with most Russian nuclear power plants the station lacks a containment building.

Nuclear events outside of the primary containment building will not be contained.

So even a small hole could release large volumes of radioactive water into the containment building.

Work crews will then slide the new generators into the containment building.

Next, it would eat through the floor of the already-damaged containment building.