The existing reactor vessel head was scheduled for replacement in 2011.

A great deal would depend on the strength and integrity of the reactor vessels.

All spent fuel was removed from the reactor vessel by January 1976.

Nuclear plants are not built to cope with the failure of the reactor vessel.

The fallen device was not retrieved from the reactor vessel until June 23, 2011.

The reactor vessel is also designed to withstand high pressures.

The reactor vessel and the steam generators, the largest parts, would come from other countries.

Their debris settled on the after wall of the reactor vessel.

However, the model is general, and is not restricted to use in the reactor vessel.

No large plant has replaced a reactor vessel or taken other steps to repair one.