All the boron moderator will do is soak up the neutrons and stop the reaction. the heat is still
in the core and will warp it if it gets too hot. if the
control rod holes are warped scramming won’t be possible.
They could dump powdered/liquid moderator directly into
the vessel as a last resort. the people tasked with doing that would be national heros giving their lives for their
country, like the reactor watch on K-19.
Listening to NHK english feed, they are saying one of the plants reactor rods may have melted, cesium has been detected near one of the plants.. will try to find out which ones is which.