Japan struggles with its worst nuclear disaster in decades, I thought it might be useful to provide a few more technical details about the reactors at Fukushima, and the most likely scenario for what is happening there.
The plant
The Fukushima Daiichi power station operates six boiling water reactors all completed during the 1970s. Details of the reactors vary but the concept is the same : the core consists of a pill-shaped pressure vessel filled with several hundred fuel assemblies. (…)