Showing posts with label becquerel. Show all posts
Showing posts with label becquerel. Show all posts

After Fukushima, fish tales


by Alex Roslin
January 14, 2012
The Montreal Gazette

After the world’s worst nuclear accident in 25 years, authorities in Canada said people living here were safe and faced no health risks from the fallout from Fukushima.

They said most of the radiation from the crippled Japanese nuclear power plant would fall into the ocean, where it would be diluted and not pose any danger.

Dr. Dale Dewar wasn’t convinced. Dewar, a family physician in Wynyard, Sask., doesn’t eat a lot of seafood herself, but when her grandchildren come to visit, she carefully checks seafood labels.

She wants to make sure she isn’t serving them anything that might come from the western Pacific Ocean.

Dewar, the executive director of Physicians for Global Survival, a Canadian anti-nuclear group, says the Canadian government has downplayed the radiation risks from Fukushima and is doing little to monitor them.

“We suspect we’re going to see more cancers, decreased fetal viability, decreased fertility, increased metabolic defects – and we expect them to be generational,” she said.

And evidence has emerged that the impacts of the disaster on the Pacific Ocean are worse than expected.

Since a tsunami and earthquake destroyed the Fukushima Daiichi Nuclear Power Plant last March, radioactive cesium has consistently been found in 60 to 80 per cent of Japanese fishing catches each month tested by Japan’s Fisheries Agency.

In November, 65 per cent of the catches tested positive for cesium (a radioactive material created by nuclear reactors), according to a Gazette analysis of data on the fisheries agency’s website. Cesium is a long-lived radionuclide that persists in the environment and increases the risk of cancer, according to the United States Environmental Protection Agency, which says the most common form of radioactive cesium has a half-life of 30 years.

The Canadian Food Inspection Agency, which monitors food safety, says it is aware of the numbers but says the amounts of cesium detected are small.

“Approximately 60 per cent of fish have shown to have detectable levels of radionuclides,” it said in an emailed statement.

“The majority of exported fish to Canada are caught much farther from the coast of Japan, and the Japanese testing has shown that these fish have not been contaminated with high levels of radionuclides.”

But the Japanese data shows elevated levels of contamination in several seafood species that Japan has exported to Canada in recent years.

In November, 18 per cent of cod exceeded a new radiation ceiling for food to be implemented in Japan in April – along with 21 per cent of eel, 22 per cent of sole and 33 per cent of seaweed.

Overall, one in five of the 1,100 catches tested in November exceeded the new ceiling of 100 becquerels per kilogram. (Canada’s ceiling for radiation in food is much higher: 1,000 becquerels per kilo.)

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[Read the entire story here, and visit my investigative journalism blog here.]

What Are Officials Hiding About Fukushima?


by Alex Roslin
The Georgia Straight
October 20, 2011
[Note: This story shared in a nomination for an investigative reporting award from the Canadian Association of Journalists in 2012.]

But when Japan’s Fukushima nuclear accident took place last March, public officials in Japan and Canada alike jumped straight into Chernobyl-style damage-control mode, dismissing any worries about impacts.
Now evidence has emerged that the radiation in Canada was worse than Canadian officials ever let on.
A Health Canada monitoring station in Calgary detected radioactive material in rainwater that exceeded Canadian guidelines during the month of March, according to Health Canada data obtained by the Georgia Straight.
Canadian government officials didn’t disclose the high radiation readings to the public. Instead, they repeatedly insisted that fallout drifting to Canada was negligible and posed no health concerns.
In fact, the data shows rainwater in Calgary last March had an average of 8.18 becquerels per litre of radioactive iodine, easily exceeding the Canadian guideline of six becquerels per litre for drinking water.
“It’s above the recommended level [for drinking water],” Eric Pellerin, chief of Health Canada’s radiation-surveillance division, admitted in a phone interview from Ottawa. “At any time you sample it, it should not exceed the guideline.”
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[Read the entire story here, and visit my investigative journalism blog here.]

"Safe" Radiation Levels After Japan’s Fukushima Nuclear Disaster Challenged by Citizens


by Alex Roslin
The Georgia Straight
August 25, 2011

After Japan’s Fukushima nuclear disaster, John Disney couldn’t help but worry. He was acting band manager of the Old Massett Village Council on the north tip of Graham Island in Haida Gwaii.
Canadian health officials were saying the radioactive fallout posed no health risk to Canadians. But Disney wasn’t convinced.
He sent samples of water, goat’s milk, and seaweed to a lab in Saskatoon for tests. The lab found 1.1 becquerels per litre of radioactive iodine in rainwater collected on March 28.
The lab told him the Canadian ceiling for iodine-131 in drinking water is six becquerels per litre. The rainwater wasn’t at the limit yet, but the sudden rise—over previously undetectable levels—worried Disney. He put out an alert to his community of 700, giving the numbers and advising residents to avoid drinking rainwater.
“It [the iodine level] was coming up fast, and I didn’t know where it was going,” he said by cellphone from Old Massett (also known as Haida Village). “Quite a lot of people around here are on rainwater [drinking] systems.”
The responses from Health Canada and Environment Canada were scathing. “They said I didn’t know what I was doing and that there was nothing to worry about. I’ve got half the world telling me I’m an idiot,” Disney said.

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[Read the entire story here, and visit my investigative journalism blog here.]

Japan’s Fukushima Catastrophe Brings Big Radiation Spikes to B.C.


by Alex Roslin
The Georgia Straight
August 4, 2011

After Japan’s Fukushima catastrophe, Canadian government officials reassured jittery Canadians that the radioactive plume billowing from the destroyed nuclear reactors posed zero health risks in this country.
In fact, there was reason to worry. Health Canada detected large spikes in radioactive material from Fukushima in Canadian air in March and April at monitoring stations across the country.
On March 18, seven days after an earthquake and tsunami triggered eventual nuclear meltdowns at the Fukushima Daiichi plant in Japan, the first radioactive material wafted over the Victoria suburb of Sidney on Vancouver Island.
For 22 days, a Health Canada monitoring station in Sidney detected iodine-131 levels in the air that were up to 300 times above the normal background levels. Radioactive iodine levels shot up as high as nearly 1,000 times background levels in the air at Resolute Bay, Nunavut.
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[Read the entire story here, and visit my investigative journalism blog here.]