Fukushima Reactor(s) Leaking Again; Hydrogen Building Up

From Huntington News:

Although the initial accident took place in the Spring, the reactors at Japan's Fukushima nuclear plant again have mounting pressure from hydrogen. Workers are trying to reduce the pressure by spraying nitrogen. Should hydrogen levels go too high, additional explosions could occur. This Youtube video is based on a release from Toyko Electric Power.

In late October, Tokyo Electric Power Company began extracting gases from the containment vessel of the No.2 reactor to remove radioactive substances. During the work, TEPCO found hydrogen accumulating in parts of the reactor at a density of up to 2.9 percent.

TEPCO started pumping nitrogen into the pressure vessels of the No.1, 2, 3 reactors on Thursday to lessen the concentration of hydrogen.

The density of hydrogen accumulating in the containment and pressure vessels is thought to be below 4 percent, the level where an explosion could occur.

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