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 yhooZT:Japan abandons nuke plant over radiation (谁是付TEPCO赔偿的 |
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emperorfan
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年龄: 49
加入时间: 2010/02/05
文章: 2008
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作者：emperorfan 在 海归商务 发贴, 来自【海归网】 http://www.haiguinet.com
谁是付TEPCO赔偿的保险公司?
Eric Talmadge and Shino Yuasa, Associated Press, On Tuesday March 15, 2011, 11:06 pm
FUKUSHIMA, Japan (AP) -- Japan suspended operations to prevent a stricken nuclear plant from melting down Wednesday after a surge in radiation made it too dangerous for workers to remain at the facility.
Chief Cabinet Secretary Yukio Edano said work on dousing reactors with water was disrupted by the need to withdraw.
The level of radiation at the plant surged to 1,000 millisieverts early Wednesday before coming down to 800-600 millisieverts. Still, that was far more than the average
"So the workers cannot carry out even minimal work at the plant now," Edano said. "Because of the radiation risk, we are on standby."
Experts say exposure of around 1,000 millisieverts is enough to cause radiation sickness.
Earlier officials said 70 percent of fuel rods at one of the six reactors at the plant were significantly damaged in the aftermath of Friday's calamitous earthquake and tsunami.
News reports said 33 percent of fuel rods were also damaged at another reactor. Officials had said they would use helicopters and fire trucks to spray water in a desperate effort to prevent further radiation leaks and to cool down the reactors.
The photo, shot the day before from the northwestern side of the reactor, shows that a large portion of the building's outer wall has collapsed. There is an 8-meter hole on the 4th floor, and the interior is visible.
Another 8-meter square hole was also confirmed on the outer wall of the building. Both appeared after an explosion early on Tuesday.
An ensuing fire near the 4th floor reportedly later went out on its own.
Flames were also found spewing from the building early Wednesday, but the utility company said they were no longer visible half-an-hour later.
TEPCO: Spraying water from air "difficult"
Tokyo Electric Power has found it difficult to spray water from a helicopter to cool down a storage pool for spent nuclear fuel inside the No.4 reactor at the Fukushima Daiichi nuclear power plant.
Gov't ups permissible radiation level
The Japanese government has revised upward the permissible level of radiation exposure for workers at the troubled Fukushima Daiichi nuclear power plant.
The health and labor ministry says that it raised the limit by a factor of 2.5, to 250 millisieverts, in cases of emergency.
The measure was adopted to secure enough time for workers at the power plant to engage in operations such as cooling down of the reactors.
Radiation above 250 millisieverts is said to cause health problems such as a temporary reduction in the number of white blood cells.
Radioactivity forecast system down
A computer system that forecasts the spread of radioactivity has not been working due to malfunctioning monitoring posts around a troubled nuclear power plant in quake-hit Fukushima Prefecture.
The Nuclear and Industrial Safety Agency says it does not know when the system will be back in operation.
The system, called SPEEDI, predicts how radioactive substances will spread in case of radiation leakage from nuclear power plants, based on measurements taken at various locations, prevailing winds and other weather conditions.
SPEEDI data are intended to be used to draw up evacuation plans for residents around power plants in case of accidents.
The system is monitored at government offices, including the industry ministry and the Nuclear and Industrial Safety Agency in Tokyo.
作者：emperorfan 在 海归商务 发贴, 来自【海归网】 http://www.haiguinet.com
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 yhooZT:Japan abandons nuke plant over radiation (谁是付TEPCO赔偿的 -- emperorfan - (3875 Byte) 2011-3-16 周三, 11:40 (1580 reads)
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