Reactor 1, at the damaged Fukushima Daiichi nuclear plant, will be filled with water, in an attempt to create a temporary water tomb.

Tokyo Electric Power Company has decided it is the best way to bring the reactor under control.  Robots will be used to check for possible leaks inside the building.  TEPCo wants to fill the reactor core, and then its surrounding containment vessel with water.  It could take until the end of July to accomplish. Currently they are injecting water at a rate of 6 tons per hour, but will increase it to 14 tons per hour.