May 13, 2011

FUKUSHIMA REACTOR 1: FULL MELTDOWN, REACTOR VESSEL BREACHED

One of the reactors at Japan’s crippled Fukushima nuclear power plant has a hole in its main vessel following a meltdown of fuel rods, leading to a leakage of radioactive water, its operator said on Thursday.

The disclosure by Tokyo Electric Power Co (TEPCO) is the latest indication that the disaster was worse than previously disclosed, making it more difficult to stabilize the plant.

The finding makes it likely that at one point in the immediate wake of the disaster the 4-meter-high stack of uranium-rich rods at the core of the reactor had been entirely exposed to the air, he said. Boiling water reactors like those at Fukushima rely on water as both a coolant and a barrier to radiation.

U.S. nuclear experts said that the company may have to build a concrete wall around the unit because of the breach, and that this could now take years.

Read full at Reuters