Radioactivity Floating on an Ocean of Ignorance

In my view we are still wasting time in respect of developing international law that bans nuclear energy in all its forms.   The articles below depict the latest leak at the Fukushima plant and the environmental effects.  The latter article describes some of the history of radiation leaks into the ocean and speaks of the Fukushima nuclear accident just after it happened.

It is interesting to reflect on sovereign nation states engaged in activities that negatively affect other parts of the global ecology.  Until we can come together as a global society and take 100% responsibility for all human impacts on this planet, it is a race to the bottom.  I find it fascinating to watch the media engaged in its usual programming and rhetoric, there is no sense of a common humanity or messages that serve the greater good.  Predominant messages are more to do with infotainment instead of the intelligent expansion of knowledge.

The nature of business-as-usual is unable to respond to the real need for change, as in truth, it doesn’t know how to change.  We have built economic structures that only respond to increasing output and revenue, there is no mechanism built in to work for the social good.  In economics it is called the public good, typically this has been left to government, yet in reality most activity is generated by the private sector, globally.  Yet business entities regard their interests as private and only speak of corporate social responsibility when it favours self interest.  I question if the design of business is flexible enough to respond to global crisis as a global citizen?  It is a challenge for most of them to rethink business yet for some there is a changing mindset which is moving closer to social entrepreneurship.  I think of Richard Branson as a light in this new social entrepreneurship and leader of an emerging social business community.  Yet he is only one of a few, we require many more with this enthusiasm and sense of community to step up to the plate and take responsibility for co-creating a way of business that is sustainable; a way of governance that is responsible and a philosophical approach that is truly democratic in service to the greater community.

In truth, organisational structures are predominantly dictatorial and typically hierarchical with the few governing the many.  We still haven’t learned how to live in community in workplaces, where most people spend their time, that is the core issue with the global community, the notion of community is inherent in buzz words, we still do not know what it means to collectively share, particularly in industrialised societies.  As soon as this idea of collectivism arises you hear the voices of socialism, communism echo it as something to fear.  I smile at that fear wearing the mask of maintaining freedom and individualism, yet in reality we are moving into times where we must start to see the world as a collective society or even a family, where each of us our responsible and we feel the connectedness. There are more entrepreneurs seeking more meaning in their work by developing businesses that actually help people e.g. micro credit schemes and health schemes. I see this as the heart of the solution we must kindly face globally. It is the emergence of a heart based intelligence that comes from empathy rather than self interest.

As a global community we need to be able to stand up and say no to negative externalities or detrimental activities as part of a collective voice supportive of a healthy earth society.  The real wealth is health in truth.  Yet this will never show up in Gross Domestic Product (GDP) or balance sheets and in reality it reflects the fact that social good was never factored into economics.

In nature there are genetic mutations that occur, they can either be favoured by natural selection or die.  It is natures way of adaptation to change, these mutations are like available contingencies when environmental conditions change rapidly.  In the human story nuclear waste and materials escaping into the environment cause mutations in another way, but seldom is this an evolutionary change, it actually represents in my mind, a system interrupt, or a cellular dysfunction, interesting that cancer is on the rise.

We have to change and evolve into a wiser species if we are to thrive, which is more than survive.  In my view it is to develop a consciousness of Oneness (we are one species) and love (see ourselves in each other). The choice is always yours not the governments.  Awareness is what enables us to float this boat, ignorance will always flounder.  Be the change you wish to see, but be it nonviolently.

May this illuminate you in a healthy way.

http://news.nationalgeographic.com/news/energy/2013/08/130821-fukushima-latest-leak-how-is-it-different/

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.

An aerial view shows the Fukushima Daiichi nuclear power plant and its storage tanks for contaminated water (bottom) August 20. Leakage from a temporary storage tank has raised new concerns about the ongoing problems at the plant.

Photograph by Kyodo/Reuters

Patrick J. Kiger

For National Geographic

Published August 21, 2013

In the latest crisis to strike the Fukushima-Daiichi nuclear power plant in Japan, operator Tokyo Electric Power (TEPCO) has discovered that 300 tons (nearly 72,000 gallons) of highly radioactive water has leaked from a holding tank into the ground over the past month.

 

The development comes on top of TEPCO’s admission last month that an estimated 300 tons of radioactive groundwater, which picks up small amounts of contamination when it flows through the damaged reactor buildings, has been leaking into the Pacific Ocean every day.  (See related story: “Fukushima’s Radioactive Water Leak: What You Should Know.”)

The new storage tank leak presents a different and potentially more serious problem than the ongoing groundwater flow leaks. The water from the leaking tank is so heavily contaminated with strontium-90, cesium-137, and other radioactive substances that a person standing less than two feet away would receive, in an hour’s time, a radiation dose equivalent to five times the acceptable exposure for nuclear workers, Reuters reported. Within ten hours, the exposed person would develop radiation sickness, with symptoms such as nausea and a drop in white blood cells.

A More Hazardous Leak

The latest leak comes from one of the massive array of 1,000 above-ground storage tanks built inside the plant by TEPCO, which store water that deliberately has been pumped into the damaged reactors in an effort to cool the nuclear fuel inside and prevent a meltdown. Such water is heavily contaminated and dangerous compared with the larger radioactive groundwater flow problem, which scientists say does not pose an immediate health hazard to humans (though it has made some types of fish from the area unsafe for consumption).

The Japanese government’s Nuclear Regulation Authority is calling the leak a “serious accident” and wants to raise the official threat level from 1 to 3 on the International Nuclear and Radiological Event Scale—the highest level since the level 7 rating given when the March 2011 earthquake and tsunami severely damaged the facility. (See related “Pictures: The Nuclear Cleanup Struggle at Fukushima.”)

While about two-thirds of Fukushima’s storage tanks are welded steel vessels, the leaking tank is one of about 350 improvised temporary tanks that TEPCO has employed to augment its capacity. The temporary tanks are made of steel plates bolted together with plastic packing materials to seal the seams, and apparently are more vulnerable to leaks. A TEPCO official told The Japan Times, an English-language daily, that there have been four previous leaks in the temporary tanks. Unlike the previous ones, this leak somehow went undetected by plant workers for as long as a month. During that time, it leaked an estimated ten tons (about 2,400 gallons) of highly radioactive water per day. (See related photos: “A Rare Look Inside Fukushima Daiichi.”)

TEPCO hasn’t yet found the precise leakage spot or spots on the faulty tank, which according to Reuters is located just 550 yards from the ocean. But the company said that workers have pumped all of the water from inside a small concrete containment area where the leaking tank is located. In the event of rain, they plan to continue running the pump, which they say is powerful enough to keep rainwater from flowing out of the containment.

“We apologize again for creating anxiety among the public,” TEPCO executive Masayuki Ono told reporters on Tuesday.

TEPCO said on Wednesday that tests of seawater from a ditch near the leaking tank didn’t show any significant increase in the amount of cesium-137 and other radioactive materials, suggesting that the highly radioactive water isn’t directly reaching the ocean. However, the possibility remains that the contaminated water might be mixing into groundwater that flows through the plant site into the ocean. In mid-July, levels of radioactive cesium-137 and cesium-134 from monitoring wells inside the plant unexpectedly surged nearly 15-fold, a phenomenon that scientists have been unable to explain. (See related story: “One Year After Fukushima, Japan Faces Shortages of Energy, Trust.”)

Ken Buesseler, a senior scientist as the Woods Hole Oceanographic Institution in Massachusetts who has studied radiation leakage from the Fukushima plant, said he is concerned about the lack of data on levels of strontium-90 in the waters off Fukushima. He said that the groundwater now leaking into the Pacific—including, possibly, some contamination from leaking tanks—might now have much higher levels of that particular substance. Strontium-90 has potentially greater health risks than cesium isotopes because it becomes concentrated in the bones of fish and humans, he said.

‘No Time to Waste’

The new problem further escalates the dilemma faced by TEPCO, which already has been struggling to find a way to deal with massive amounts of water contaminated with various radioactive substances at the site. When the company belatedly revealed last month the daily leakage of radioactive groundwater into the Pacific Ocean, a problem that outside scientists have long suspected, public confidence in TEPCO’s ability to manage the cleanup threatened to erode further.

The development prompted Japanese government officials to step in and take a more direct role: The government announced last week that it is considering spending 50 billion yen ($410 million) to finance construction of a frozen soil barrier—also known as an ice wall—in an effort to block the groundwater from the plant from reaching the ocean.  (See related story: “Can an Ice Wall Stop Radioactive Water Leaks From Fukushima?“) That technology has long been used in the mining and construction fields, and reportedly performed well in containing radioactive water in a U.S. government test project in the early 1990s, but has never been used on a large scale at a nuclear power plant.

“This leak is very serious,” said Dr. Janette Sherman, an Alexandria, Virginia-based physician who specializes in radioactive and toxic exposure. Dr. Sherman, who edited an in-depth study of health effects on cleanup workers in the 1986 Chernobyl nuclear disaster in the former Soviet Union, said she is concerned that the cleanup crew at Fukushima Daiichi may face long-term health risks. She also raised the prospect of the radiation’s as-yet unknown effects on fish and other marine life in the Pacific.

Buesseler said he was concerned that the high level of radiation from the leaking tank might just be a harbinger of what is to come if more of the other temporary tanks begin to fail.  But he’s even more worried by revelations of leaks and other problems at the plant, which lately have been coming with dismaying frequency. “There is still a lot of contamination at Fukushima—in the land, in the buildings, and now from these tanks,” Buesseler said. “Every bit of news that we’ve been getting is that the [radioactivity] numbers are going up.”

“I’m becoming less confident that [TEPCO] can contain the problem,” he said.

Japan’s Nuclear Regulation Authority shares Buesseler’s concern, warning that the latest leakage problem might be beyond TEPCO’s ability to cope. “We should assume that what has happened once could happen again, and prepare for more,” watchdog chairman Shunichi Tanaka told a news conference, BBC News reported. “We are in a situation where there is no time to waste.”

This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.

 

http://e360.yale.edu/feature/radioactivity_in_the_ocean_diluted_but_far_from_harmless/2391/

07 Apr 2011: Report

Radioactivity in the Ocean:
Diluted, But Far from Harmless

With contaminated water from Japan’s crippled Fukushima nuclear complex continuing to pour into the Pacific, scientists are concerned about how that radioactivity might affect marine life. Although the ocean’s capacity to dilute radiation is huge, signs are that nuclear isotopes are already moving up the local food chain.

by elizabeth grossman

Over the past half-century, the world has seen its share of incidents in which radioactive material has been dumped or discharged into the oceans. A British nuclear fuels plant has repeatedly released radioactive waste into the Irish Sea, a French nuclear reprocessing plant has discharged similar waste into the English Channel, and for decades the Soviets dumped large quantities of radioactive material into the Arctic Ocean, Kara Sea, and Barents Sea. That radioactive material included reactors from at least 16 Soviet nuclear-powered submarines and icebreakers, and large amounts of liquid and solid nuclear waste from USSR military bases and weapons plants.

Still, the world has never quite seen an event like the one unfolding now off the coast of eastern Japan, in which thousands of tons of radioactively contaminated water from the damaged Fukushima Daiichi nuclear power plant are pouring directly into the ocean. And though the vastness of the ocean has the capacity to dilute nuclear contamination, signs of spreading radioactive material are being found off Japan, including the discovery of elevated concentrations of radioactive cesium and iodine in small fish several dozen miles south of Fukushima, and high levels of radioactivity in seawater 25 miles offshore.

International Atomic Energy Agency
Seawater concentrations of cesium-137, March 23 to March 30.

How this continuing contamination will affect marine life, or humans, is still unclear. But scientists agree that the governments of Japan, the United States, and other nations on the Pacific Rim need to ramp up studies of how far this contamination might spread and in what concentrations.

“Given that the Fukushima nuclear power plant is on the ocean, and with leaks and runoff directly to the ocean, the impacts on the ocean will exceed those of Chernobyl, which was hundreds of miles from any sea,” said Ken Buesseler, senior scientist in marine chemistry at the Woods Hole Oceanographic Institution in Massachusetts. “My biggest concern is the lack of information. We still don’t know the whole range of radioactive compounds that have been released into the ocean, nor do we know their distribution. We have a few data points from the Japanese — all close to the coast — but to understand the full impact, including for fisheries, we need broader surveys and scientific study of the area.”

Buessler and other experts say this much is clear: Both short-lived radioactive elements, such as iodine-131, and longer-lived elements — such as cesium-137, with a half-life of 30 years — can be absorbed by phytoplankton, zooplankton, kelp, and other marine life and then be transmitted up the food chain, to fish, marine mammals, and humans. Other radioactive elements — including plutonium, which has been detected outside the Fukushima plant — also pose a threat to marine life. A key question is how concentrated will the radioactive contamination be. Japanese officials hope that a temporary fishing ban off the northeastern Japanese coast will be enough to avert any danger to human health until the flow of radioactive water into the sea can be stopped.

But that spigot is still running. Since the March 11 earthquake and tsunami, and the resulting damage to the reactors at the Fukushima Daiichi nuclear power plant, huge quantities of water have been poured on four stricken

The key question is how concentrated will the radioactive contamination be.

reactors to keep them cool. Thousands of tons of radioactively contaminated water have then been released from the Fukushima complex into the ocean. And even though the Japanese this week stopped a leak of highly radioactive material from the badly damaged Reactor No. 2, the water used to cool the reactor cores continues to flow into the sea. In addition, atmospheric fallout from the damaged reactors is contaminating the ocean as prevailing winds carry radioactivity out over the Pacific.

The Tokyo Electric Power Company (TEPCO) has reported that seawater containing radioactive iodine-131 at 5 million times the legal limit has been detected near the plant. According to the Japanese news service, NHK, a recent sample also contained 1.1 million times the legal level of radioactive cesium-137.

Studies from previous releases of nuclear material in the Irish, Kara and Barents Seas, as well as in the Pacific Ocean, show that such radioactive material does travel with ocean currents, is deposited in marine sediment, and does climb the marine food web. In the Irish Sea — where the British Nuclear Fuels plant at Sellafield in the northwestern United Kingdom released radioactive material over many decades, beginning in the 1950s — studies have found radioactive cesium and plutonium concentrating significantly in seals and porpoises that ate contaminated fish. Other studies have shown that radioactive material from Sellafield and from the nuclear reprocessing plant at Cap de la Hague in France have been transported to the North Atlantic and Arctic Oceans. A study published in 2003 found that a substantial part of the world’s radioactive contamination is in the marine environment.

Click to enlarge
cs137 levels Japan

Antony Dickson/AFP/Getty Images
A sign inside a Hong Kong supermarket assures shoppers that the sushi for sale is not of Japanese origin.

But what impact this radioactive contamination has on marine life and humans is still unclear. Even the mass dumping of nuclear material by the Soviets in the Arctic has not been definitively shown to have caused widespread harm to marine life. That may be because containment vessels around some of the dumped reactors are preventing the escape of radiation. A lack of comprehensive studies by the Russians in the areas where nuclear waste was dumped also has hampered understanding. Two events in the early 1990s — a die-off of seals in the Barents Sea and White Sea from blood cancer, and the deaths of millions of starfish, shellfish, seals and porpoises in the White Sea — have been variously attributed by Russian scientists to pollution or nuclear contamination.

How the radioactive materials released from the Fukushima plants will behave in the ocean will depend on their chemical properties and reactivity, explained Ted Poston, a ecotoxicologist with the Pacific Northwest National Laboratory, a U.S. government facility in Richland, Washington. If the radionuclides are in soluble form, they will behave differently than if they are absorbed into particles, said Poston. Soluble iodine, for example, will disperse rather rapidly. But if a radionuclide reacts with other molecules or gets deposited on existing particulates — bits of minerals, for example — they can be suspended in the water or, if larger, may drop to the sea floor.

“If particulates in the water column are very small they will move with the current,” he explained. “If bigger or denser, they can settle in sediment.”

If iodine-131, for example, is taken up by seaweed or plankton, it can be transferred to fish, which are in turn eaten by larger fish, as has been seen in the Irish Sea. Fish can also take in radionuclides in the water through their gills, and radionuclides can be ingested by mollusks. But Edward Lazo, deputy division head for radiation protection at the Organization for Economic Cooperation and Development, said, “This is not a fully developed science and there are lots of uncertainties.”

Radioactive iodine is taken up by the thyroid in humans and marine mammals — or in the case of fish, thyroid tissue — and is also readily absorbed by seaweed and kelp. Cesium acts like potassium and is taken up by muscle. Cesium would tend to stay in solution and can eventually end up in marine sediment where, because of its long half life, it will persist for years. Because marine organisms use potassium they can also take up cesium. “Cesium behaves like potassium, so would end up in all marine life,” said Arjun Makhijani, president of the Institute for Energy and Environmental Research in Maryland. “It certainly will have an effect.”

Tom Hei, professor of environmental sciences and vice-chairman of radiation oncology at Columbia University, explained that the mechanisms that determine how an animal takes in radiation are the same for fish as

How the radiation accumulates depends on the degree of exposure and half-life of the element.

they are for humans. Once in the body — whether inhaled or absorbed through gills or other organs — radiation can make its way into the bloodstream, lungs, and bony structures, potentially causing death, cancer, or genetic damage. Larger animals tend to more sensitive to radiation than smaller ones. Yet small fish, mollusks and crustaceans, as well as plankton and phytoplankton, can absorb radiation, said Poston. How the radiation accumulates depends on the degree of exposure — dose and duration — and the half-life of the element, said Hei.

Depending on its chemical form and by what organisms it is taken up, radiation can also concentrate when it moves through the food chain. A 1999 study found that seals and porpoises in the Irish Sea concentrated radioactive cesium by a factor of 300 relative to its concentration in seawater, and a factor of 3 to 4 compared to the fish they ate.

So far, the Japanese government and TEPCO have provided only limited data on marine contamination from the Fukushima plant. Given the emergency situation, independent monitoring along the coast is difficult, said Jan Beránek, director of Greenpeace International’s nuclear energy project. On April 5, the Japanese government set its first standards for allowable levels of radioactive material in seafood. A number of countries have banned seafood imports from Japan. The U.S. has barred food imports from the prefectures closest to Fukushima and the Food and Drug Administration says it is closely monitoring imported food products, including seafood, for radiation contamination.

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“This is not an imminent health concern, but we haven’t seen the end of it,” said Theo Theofanous, professor of chemical and mechanical engineering at the University of California, Santa Barbara.

The U.S. National Oceanic and Atmospheric Administration (NOAA) says it is not conducting any monitoring of the marine environment for radiation. The U.S. Environmental Protection Agency (EPA) is monitoring airborne radiation, but its spokespeople were unable to say whether the EPA was monitoring the marine environment as well.

Experts such as Buesseler of Woods Hole, as well as activists like Beránek, said an international effort should quickly be launched to sample and measure radionuclides in the ocean, seafloor, and marine life, with close attention paid to which direction ocean currents can be expected to transport water potentially contaminated by Fukushima.

POSTED ON 07 Apr 2011 IN Energy Energy Oceans Policy & Politics Policy & Politics Pollution & Health Asia North America

Mohandas Gandhi

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