Raise awareness of environmental health issues in order to better protect our children and future generations.

EMF Studies

29 January 2016

Radioactive Water From Fukushima Is Leaking Into the Pacific

The Ikata Nuclear Power Plant, which was idled after the 2011 disaster
in Fukushima, in the Ehime prefecture of Japan, January 23, 2014.
(Photo: Ko Sasaki/ The New York Times)
Dahr Jamail | Radioactive Water From Fukushima Is Leaking Into the Pacific
by Dahr Jamail, Truthout | Report, 27 January 2016

The Ikata Nuclear Power Plant, which was idled after the 2011 disaster in Fukushima, in the Ehime prefecture of Japan, January 23, 2014. (Photo: Ko Sasaki / The New York Times)

"Fukushima is the biggest industrial catastrophe in the history of mankind," Arnold Gundersen, a former nuclear industry senior vice president, told Truthout shortly after a 9.0 earthquake in Japan caused a tsunami that destroyed the cooling system of Tokyo Electric Power Company's (TEPCO) nuclear plant in Fukushima, Japan.

While this statement might sound overdramatic, Gundersen may be right.

Several nuclear reactor meltdowns in the plant, which at the time forced the mandatory evacuations of thousands of people living within a 15-mile radius of the damaged power plant, persist, and experts like Gundersen continue to warn that this problem is not going to go away.

The March 11, 2011, 9.0 earthquake that destroyed the cooling systems at TEPCO led to hydrogen explosions and reactor meltdowns, and has left exposed highly radioactive materials that Gunderson says are the root of the problem. For now, there is no solution in sight.

"Fukushima has three nuclear reactors exposed and four fuel cores exposed," Gundersen said. "You probably have the equivalent of 20 nuclear reactor cores because of the fuel cores, and they are all in desperate need of being cooled, and there is no means to cool them effectively."

This persistent problem reared its head yet again in December 2015, when TEPCO was forced to deal with a massive amount of highly radioactive water generated by having to cool the reactors and exposed fuel cores Gundersen mentioned.

TEPCO must now transfer between 200 and 300 tons of groundwater into highly contaminated reactor buildings, having been unable to devise an effective plan for keeping the groundwater from continuing to flow under the plant.

"The problem is how to keep it cool," Gundersen explained. "They are pouring in water and the question is what are they going to do with the waste that comes out of that system, because it is going to contain plutonium and uranium. Where do you put the water?"

The company has repeatedly come under fire for periodically dumping large amounts of radioactive water into the Pacific Ocean.

Even though the plant has not been online since it was largely destroyed in 2011, fission products such as uranium continue to generate heat, and therefore require cooling.

"The fuels are now a molten blob at the bottom of the reactor," Gundersen said.

Shortly after the plant was damaged, TEPCO announced that they had experienced a "melt through," which means a melted reactor core had melted through some layers beneath it.

That left several highly radioactive blobs that now have water on top of them, hence causing the water to become extremely radioactive. This process of cooling the cores has now generated hundreds of thousands, if not millions, of tons of highly radioactive water that then must be dealt with somehow.

Dr. M.V. Ramana, a physicist and lecturer at Princeton University's Program on Science and Global Security and the Nuclear Futures Lab, says the problem is the lack of a real long-term plan for addressing the issue.

"Most of the time TEPCO seems to be firefighting, discovering leaks here and unexpectedly high levels of radiation there," Ramana told Truthout. "In part, this is because TEPCO's plans do not account for the many possibilities of failure and putting in place backup safety systems."

Dr. Helen Caldicott, an author and anti-nuclear advocate who has established several foundations that oppose the use of nuclear power and weapons and depleted uranium munitions, told Truthout that the situation in Fukushima is "very serious indeed."

"There is no way to prevent the radioactive water [from] reaching the western shores of the North American continent and then circulating around the rest of the Pacific Ocean," Caldicott said. "At the moment, it seems like this is going to occur for the rest of time."

Massive Releases of Radiation

A declassified report from the US Nuclear Regulatory Commission written immediately after the disaster began states that massive amounts of radiation from the plant were released into the atmosphere early on.

The report states: "25% of the total fuel in unit 2 released to the atmosphere ... 50% of the total spent fuel from unit 3 was released to the atmosphere, and ... 100% of the total spent fuel was released to the atmosphere from unit 4."

Meanwhile, in December 2015, Japan's NHK news agency reported alarmingly high spikes in radiation levels underneath the Fukushima plant.

TEPCO detected levels of radioactive cesium (a material which has a half-life of 30 years) in water samples that were 4,000 times higher than data taken the same month one year earlier. The samples also contained levels of a beta-ray-emitting radioactive substance that were 4,100 times higher than they were from the same period a year earlier.

As Caldicott warned, radiation from Fukushima along the US West Coast is expected to continue to worsen.

According to a 2013 study by the Nansen Environmental and Remote Sensing Center in Norway, the first radioactive oceanic plume released by Fukushima is likely to hit the US's West Coast in force in 2017, with levels expected to peak in 2018. According to the report, the majority of the radioactive material from the disaster is expected to stay concentrated along the West Coast through at least 2026.

Even though that plume hasn't yet hit, the spread of radiation has already been substantial. Professor Michio Aoyama of Japan's Fukushima University Institute of Environmental Radioactivity believes the amount of radiation that has now reached North America is probably nearly as much as was spread over Japan during the initial disaster.

A recent Woods Hole study shows a 50 percent increase in radiation levels 1,600 miles west of San Francisco, but states that the levels are still far below what the US government considers dangerous.

However, Caldicott takes issue with what the United States considers a "safe" level of radiation exposure.

"There are no safe levels of radiation for biological systems," she said. "That terminology is used by the nuclear industry to cover their inevitable radioactive releases."

Solution?

No comments:

Post a Comment