[justa-hairyape]

what about the huge explosion?

Huge explosion was at a different nearby plant. The plant in this article was the second plant with cooling problems. So apparently we now just have 1 plant with two reactors having problems.

[J Aguilar]

The older reactors are the ones that are having problems to be shut down safely:

Fukushima I ("Daichi") where the explosion has happened.

Fukushima II ("Daini") what this report is about.

[Drago]

Indeed, misunderstanding...they are indeed close in proximity and name...see:

http://www2.jnes.go.jp/atom-db/en/general/atomic/ke02a13/info_g.html

Fukushima Daini is in better shape apparently.