An assessment on the environmental contamination caused by the Fukushima accident

Highlights

•: Different mechanisms of the release of the radionuclides into the atmosphere and cooling water.
•: Atmospheric releases mainly governed by the volatility of the radionuclides.
•: Significant releases of long-lived radionuclides including ¹³⁷Cs and ⁹⁰Sr into the cooling water.

Abstract

The radiological releases from the damaged fuel to the atmosphere and into the cooling water in the Fukushima Daiich Nuclear Power Plant (FDNPP) accident are investigated. Atmospheric releases to the land and ocean mostly occurred during the first week after the accident whereas continuous release from the damaged fuel into the cooling water resulted in an accumulation of contaminated water in the plant during last six years. An evaluation of measurement data and analytical model for the release of radionuclides indicated that atmospheric releases were mainly governed by the volatility of the radionuclides. Using the measurement data on the contaminated water, the mechanism for the release of long-lived radionuclides into the cooling water was analyzed. It was found that the radioactivity concentrations of ⁹⁰Sr in the contaminated water in the Primary Containment Vessel (PCV) of unit 2 and unit 3 were consistently higher than that of ¹³⁷Cs and the radioactivity concentration of ⁹⁰Sr in the turbine building of unit 1 in year 2015 was higher than that in year 2011. It was also observed that the radioactivity concentration of long-lived radionuclides in the contaminated water in the FDNPP is still high even in year 2015. The activity ratio of ²³⁸Pu/^239+240Pu for the contaminated water was in the range of 1.7–5.4, which was significantly different from the ratios from the soil samples representing the atmospheric releases of FDNPP. It is concluded that the release mechanisms into the atmosphere and cooling water are clearly different and there has been significant amount of long-lived radionuclides released into the contaminated water.

1.This Month

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On behalf of the blogger Shaun McGee aka arclight aka Sean Arclight on FB and @Arclight2011 on Twitter, my co-blogger, one of us 3 bloggers of Nuclear news blog (https://wordpress.com/post/nuclear-news.net):

Shaun needs badly to replace his computer, which is kaputt. During the past 8 years he has been unceasingly researching and blogging about worldwide nuclear and about Fukushima, producing quality articles.

Please let’s help him to get a new computer, tip in whatever you can spare him. His paypal connected email is arclight2011@riseup.net for donations.

Advanced thanks, Herve Courtois aka Dun Renard

A good news story: Jay Inslee Is Betting He Can Win the Presidency on Climate Change
The Washington governor believes his focus on the environment will resonate with voters. But can he persuade enough Americans to pay attention to him? EDWARD-ISAAC DOVERE, The Atlantic JAN 2, 2019 “………When you’ve been working on something for over a decade, and now seeing people awakening to that, it’s just really gratifying and heartening,” the Washington governor recently told me, sitting in his private study on the top floor of the governor’s mansion. When it comes to climate change, there now appears to be “an appetite for someone who has credibility and a long track record and, most importantly, a vision statement. It’s changed to show an opening in a Democratic primary, I believe.”…..

As he did in Washington State, Inslee would propose a mix of government investments and incentives to spur other investment, restrictions on power plants and emissions, and programs to promote R&D and job growth. An endless number of jobs can be created in the climate arena, Inslee says. It’s the way to make a real dent in income inequality and have the Democratic Party bring tangible solutions to communities in rural America that have been left behind……… https://www.theatlantic.com/politics/archive/2019/01/washington-governor-jay-inslee-running-president/579217/

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EVENT

The Bulletin of the Atomic Scientists will host a live international news conference at 10 a.m. EST/1500 GMT on Thursday, January 24, 2019, to announce the 2019 time of the Doomsday Clock. The news conference will take place at the National Press Club in Washington, D.C. Watch the announcement live on our website, on our Facebook page, or on Twitter. more https://nuclear-news.net/2019/01/10/the-doomsday-statement-2019-bulletin-of-the-atomic-scientists/

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A Good News Story: A Surge of Climate Lawsuits Targets Human Rights, Damage from Fossil Fuels Cities, states and the fishing industry want courts to hold fossil fuel companies accountable for global warming. Others argue government inaction violates rights.BY NICHOLAS KUSNETZ “….The past year saw a surge in new lawsuits filed against fossil fuel companies, and major developments in cases pressing governments for action in the United States and abroad.”

“Lawsuits, even if unsuccessful, can help shape public opinion,”

“Mr. Scopes lost the monkey trial, but it led to a lot more awareness about the issue of teaching evolution.”

In Colombia and the Netherlands, citizens won rulings in 2018 ordering their governments to cut emissions and protect forests. By framing climate change in terms of human rights, those cases and similar ones filed in the U.S. and other countries are transforming how the courts address the issue………. https://insideclimatenews.org/news/04012019/climate-change-lawsuits-2018-year-review-exxon-fossil-fuel-companies-human-rights-children-government

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