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New radiation readings suggest more Fukushima tank leaks

Published time: August 22, 2013 07:12
Edited time: August 23, 2013 10:08
An aerial view shows Tokyo Electric Power Co. (TEPCO)'s tsunami-crippled Fukushima Daiichi nuclear power plant and its contaminated water storage tanks (bottom) in Fukushima, in this photo taken by Kyodo August 20, 2013. (Reuters/Kyodo)

An aerial view shows Tokyo Electric Power Co. (TEPCO)'s tsunami-crippled Fukushima Daiichi nuclear power plant and its contaminated water storage tanks (bottom) in Fukushima, in this photo taken by Kyodo August 20, 2013. (Reuters/Kyodo)

Excessive radiation levels have been detected next to the vast storage tanks containing the highly-contaminated water used to cool reactors at the damaged Fukushima power plant. One such tank already leaked earlier this week.

The announcement was made by Fukushima operator Tokyo Electric Power Co (TEPCO), which began to check its 300 storage tanks after 300 tons of contaminated water escaped from one of them on Wednesday.

The contaminated water that leaked on Wednesday contains an unprecedented 80 million Becquerels of radiation per liter, according to the company. The norm is a mere 150 Bq.

The puddle that formed around the damaged tank is emitting radiation of 100 Millisieverts per hour, as a probe has been taken about half a meter from the water, reported Kyodo News. The traces of radioactivity were detected in a drainage stream.

“We have finished pumping out water from the troubled tank, while we have continued removing the soil soaked by the water,” Numajiri said. “We cannot rule out the possibility that part of the contaminated water flowed into the sea.”

Japan’s Nuclear Regulation Authority (NRA) commissioners raised the severity of the latest Fukushima leak to Level Three, which is considered a ‘serious radiation incident’ on the International Nuclear Event Scale (INES) for radiological releases. The alert was raised from Level One, which indicates an ‘anomaly’.  Level Seven is the most dangerous radiation status.

"Judging from the amount and the density of the radiation in the contaminated water that leaked ... a Level 3 assessment is appropriate," said the document used during Wednesday’s weekly meeting of the NRA.

NRA Chairman Shunichi Tanaka on Wednesday voiced concern that there could be similar leaks from other containers.

“We must carefully deal with the problem on the assumption that if one tank springs a leak the same thing can happen at other tanks,” he said.

One of the main difficulties for TEPCO in handling the nuclear plant damaged in 2011 Tsunami is what to do with the water used to cool the reactor. The liquid is stored in some 1,000 tanks.

Since the melted cores of the three destroyed reactors have burnt through the concrete basement of the reactor zone, radioactive water is seeping into the surrounding soil.  

In July, TEPCO reported officially for the first time that the radioactive groundwater had been leaking outside the plant, which is located close to the Pacific coast.

Comments (17)

 

Graeme Taylor 28.08.2013 15:09

Lol, their's a thousand tanks. Governments have a habit of not telling us things until it's far too late.

 

Rach Keggin 25.08.2013 19:01

This is just terrible. All those cases of cancer. Now we have been told it's leaking into the sea, destroying fishing industries and marine life. Also this has been in our food chain for a while without our knowledge. The plant needs to be shut down. We need clear and honest information as to what is happening now and to get this sorted. Very sad indeed.

 

Terry 25.08.2013 05:38

Grab up the owners of TEPCO, put them in a line, and publicly, give them a choice. Go in and repair this yourselves, not the workers, the owners. If they refuse, SHOOT them so everyone can see................. .........

View all comments (17)
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