NHK (Nippon Housou Kyoukai/Japan Broadcasting Corporation) interviewed a nuclear analyst who said that Tokyo Electric Power Company’s reactionary actions have actually made the situation with their Fukushima Daiichi plant much worse.
Also, he warned that hydrogen gas build up in the Reactor 1’s core is much much worse that the hydrogen gas build up the resulted in the reactor’s outer buildings to explode. TEPCo is going to try using nitrogen to counteract the hydrogen gas build up.
If a reactor core, or containment vessel, explodes it will result in a constant stream of deadly radiation being spewed into the air.