Authorities in Japan raised the prospect Friday of a likely breach in the all-important containment vessel of the No. 3 reactor at the stricken Fukushima Daiichi nuclear power plant, a potentially ominous development in the race to prevent a large-scale release of radiation.
Here’s more from CNN:
Contaminated water likely seeped through the containment vessel protecting the reactor’s core, said Hidehiko Nishiyama of the Japan Nuclear and Industrial Safety Agency.
Three employees working near the No. 3 reactor Thursday stepped into water that had 10,000 times the amount of radiation typical for a nuclear plant, Nishiyama said. An analysis of the contamination suggests “some sort of leakage” from the reactor core, signaling a possible break of the containment vessel that houses the core, he said.
Bloomberg reports, “The agency said yesterday it doesn’t think there is a physical crack in the pressure vessel or containment vessel at the No. 3 reactor.” Back to CNN:
Plant workers were also carefully watching the plant’s No. 1 reactor, concerned that an increase in pressure noted inside that reactor could be a troublesome sign. Earlier, buildups of hydrogen gas had driven up pressure that led to explosions at three of the nuclear plant’s reactors, including the No. 1 unit.
Nishiyama conceded that “controlling the temperature and pressure has been difficult” for that reactor, which on Friday had been declared stable.
Pretty remarkable that after two weeks, the situation still isn’t stabilized.
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