Saturday, April 09, 2011

Reactor core can be violated

Saturday, April 09, 2011
Japan nuclear core may LeakingNEW: A Tokyo Electric official apologizes for poor communication on tainted WaterNEW: a Japanese official says the company parts needs water, not sea water, information of the public TrustFresh to keep is pumped in paragraphs 1, 2 and 3 ReactorsHigh levels of emissions in the water in these 3 reactors turbine buildings are recognized

Tokyo (CNN) --eine power company apologized Saturday and the exposure of three men working in the power station of Fukushima Daiichi highly radioactive water could be avoided with better communication, said.

March 24 incident, in addition to three men dangerously high radiation, forced questions about the source of the contamination in water, to spoil their potential sea water in the vicinity, and the view on, it could be evidence of a leak in one or more of the installation of six reactor cores.

It invited other criticism of Tokyo electric power company, which runs the plant, and how well their backup almost the work on 500 people, more emissions may cancer radioactive materials to prevent, that more than two weeks after a 9.0 earthquake and subsequent tsunami rocked the facility.

On Saturday not the company's Associate Director Hideyuki Koyama recognised that this Thursday for the first time, that high radiation found in pooled water at the plant.

Specifically, he said that tests found in the basement of the No. 1 reactor water turbine building on 18 March showed high radiation. But, that Tatsache-and the general feeling, that water in the turbine and other buildings in the work may be dangerous radioaktiven-- do not seem to six days later resonate.

On this day, radiation, joined three workers laying cables tainted water between 173 and 181 millisieverts, including two with direct exposure to their skin, while laying cable suspend.

Japanese Chief Cabinet Secretary Yukio Edano told reporters that such incidents threatened electric undermine the confidence of the public in Tokyo. He added the Japanese Government "want," the company to give stronger statements that it as possible completely should disclose as much information on conditions in the work.

"Each piece of information accurately and quickly Japan's nuclear and industrial Agency must be provided", said Edano. "Without this communication, it is very difficult for the Government produce (adequate safety measures)."

As important, the Chief Secretary said, was the need for Tokyo Electric front with Japanese civil-millions of which will make of the company, and millions more have been effected by radioactive emissions from the crisis.

"We want to ensure that (Tokyo Electric) is not in any way Act, the mistrust, want to create" Edano said.

Koyama reporters earlier Saturday that radiation alarms went during the three men worked, but their mission for continued between 40 and 50 minutes after assuming that it was a false alarm.

Later they were admitted to the hospital after it was found that between 173 and 181 millisieverts Strahlung--two of them with direct exposure to their skin were exposed to. Comparison is exposed to, course 3 millisieverts per year a person in an industrialized country, even though Japanese Ministry of health has said that those who may be exposed directly to the nuclear crisis as 250 millisieverts before they must leave the website.

Hours before the apology on Saturday, an official Tokyo Electric also told reporters that the water from the turbine buildings for the No. 1 and 2 reactors samples had high radiation. However, were these readings of half recognized earlier in the basement of building No. 3.

The question of possible leakage of such material gained urgency Saturday after Japan's nuclear and industrial agency reported that the amount of radiation iodine 330 metres has been included in sea water from the plant 1,250 times higher than normal. A Tokyo Electric official speculated water outflow or leakage from the turbine building may have caused the sudden increase in, when he said that other factors as may also have contributed.

On Friday said Hidehiko Nishiyama Japan's nuclear and industrial Agency, proposes "a kind of leakage" contaminated water of the No. 3 of the Reaktorkern--signalling a possible violation of the vessel containment, the houses the core.

These developments come information from the International Atomic Energy Agency, the airborne radiation to the plant, which is 240 kilometers (150 miles) North of Tokyo, "continue to decrease."

Tokyo Electric reports on its website at 7 am Saturday, radiation at the main gate of the plant 0.219 millisieverts per hour –-a fraction of the 400 millisieverts per hour measured between units 3 and 4 March were.

Last week, the measurements are a major at the same gate drop measurements after.

The presence of highly radioactive water in buildings at reactors lines: 1, 2 and 3 has stopped some efforts to curb the release of more emissions. Yet, others continue and there is the last evidence of progress.

"We can easily say that we take measures so that the situation has not deteriorated,", said Edano. "We have some steps to front could." "Still, vigilance is required."

Fresh water was, that pumped Saturday at the No. 1, 2 and 3 reactors. This replaced the sea water, previously with the goal of fresh water at the same time to cool down nuclear fuel have been used and rinse you also the accumulation of salt, that the reactors could hamper existing cooling systems.

The reactor No. 3 was cause for concern, experts said, because the only use it a combination of uranium and plutonium fuel, named MOX, more dangerous than pure uranium fuel in other reactors as.

The Japan Atomic Industrial Forum, an industry trade group, which tracks official accounts the effort at the Fukushima Daiichi plan, said that the pressure containment vessel has been updated by the No. 3 reactor to "stable".

While the Group had declared Friday that damage to the reactor on the Saturday of the evaluation in "unknown"-amended a further confirmation of uncertainty has been suggested the contaminated water was the result of a leak in the reactor core or had some other cause.

Workers had already the Appendix No. 1 reactor in which the announcement of the similar contaminated water into his own turbine monitored buildings. The person concerned had, that an increase in the pressure's off, that reactor could be a problematic sign. Previously buildups of hydrogen gas pressure had been driven, the explosions reactors, including the No. 1 unit in three of the nuclear power plant.

Nishiyama conceded that "the control of the temperature and pressure been difficult," said which was on Friday for this reactor, stable.

Also on the reactor No. 4, 5 and 6-each, which have less concerns, pronounced as the units on scheduled outages were haunted as the earthquake.

None of these three units had nuclear fuel in their reactors, although efforts to control temperatures within the spent fuel pools.CNN's Jennifer Rizzo contributed to this report.

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