Wednesday, March 30, 2011

The last options to save Fukushima

The cartridges are finished to save the plant in Fukushima. The complications of the past few days with the detection of plutonium in ground water or the large increase of radioactivity in the sea, have meant that the Government start to consider measures against the clock to tackle the nuclear crisis.

The Japanese authorities contemplate "all alternatives" to stabilize the Fukushima nuclear plant and is studying the adoption of certain measures that have been leaked to the press, as announced on Wednesday his spokesman, Yukio Edan, a public hearing. These measures include the deployment of special fabric on the ground to prevent the emission of radioactive particles into the atmosphere and the use of a vessel for temporary storage of contaminated water.

In addition, TEPCO, the company that owns the plant, announced that an inability to control units 1, 2, 3 and 4 will proceed to dismantle them, but do not yet know how. Meanwhile, the Government has requested to be closed all. Other options that the executive shuffles Japanese power company TEPCO is the construction of a sarcophagus covering the damaged reactor of the plant.

One technique that was used in Chernobyl and that has not been ruled out, although it would be the last resort to take, as declared by several experts. In Chernobyl, an army of workers buried the first central sand, steel and concrete. The problem is that the sarcophagus contain radioactivity only for a while.

The company TEPCO has accepted the help of experts from the French group Areva, specializing in the decontamination of radioactive waste. Furthermore the U.S. government has put at the service of Japan special robots capable of withstanding high levels of radiation. "We face an unprecedented situation and we have to consider different strategies, beyond what we normally do," said a member of the Government.

Since Monday Nipponese authorities face two major problems at the plant. On the one hand, increased radioactivity resulting from a possible partial melting of fuel rods, and, secondly, the radiation found in the water surrounding the facilities and the sea. The level of radioactive iodine in sea water near the Fukushima nuclear plant than 3,355 times the safety limit, which is the highest concentration to date.

The samples taken yesterday at 330 meters south of a water outlet near the reactors 1 to 4 of the Kozloduy revealed a sharp increase of the isotope 131 of iodine on the weekend when they came to be 1,850 times higher than normal. Technicians from Tokyo Electric Power (TEPCO), operator of the Fukushima Daiichi plant, are studying various ways to prevent radioactivity from leaking into the sea, especially long-lived isotopes of iodine, plutonium itself.

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