The Best Way to Map Radiation? Bento Boxes Stuffed With Geiger Counters via Gizmodo

Back in 2011, a team of volunteers crammed Geiger counters into bento-shaped boxes to map the radiation following the Fukushima meltdown. It turned into the biggest collection of radiation data in history. Next up: tackling air pollution.

The nonprofit, formed one week after the March 2011 Great Tohoku Earthquake to map Fukushima radiation, is called Safecast. To date, it has now gathered 32 million data points around the world using 800 sensors, making the biggest project of its kind in history.

Independent and apolitical, it’s based mostly in Tokyo, but the once small team has grown to include over 100 global volunteers. The data Safecast initially collected gave Japan’s citizens a more informed idea of where radiation existed.

Now, the organization is looking to use the same mapping technologies to fight other environmental problems worldwide. Safecast won a $400,000 grant from the Knight Foundation in 2012 to map air pollution in big cities around the world. Since then, it’s been collaborating with the likes of MIT Media Lab and Google to work on air sensors that can track greenhouses gases like methane.
[…]
What makes Safecast data different from government-reported data? Safecast says theirs is more detailed and consistent. Radiation readings can differ by just crossing the street, and the organization says that some countries release radiation ratings for entire cities based on one reading.

A lot of those readings are taking from rooftops, but Safecast volunteers use sensors as close to heights of one meter as possible. They also strive to be as granular as possible, collecting data street by street. The findings are shared, free, via an iOS app. All data is placed as public domain under Creative Commons Zero.

[…]
Safecast has been kicking some serious butt in the name of making environmental data publicly available for free. According to its March 2015 project update on Medium:

[…]

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Austria to file EU complaint against UK nuclear plant via yahoo!news

Vienna (AFP) – Austria will next week officially file a legal complaint in Brussels against state subsidies for Britain’s planned new Hinkley Point nuclear power plant, the government in Vienna said Tuesday.

“We cannot accept that a technology such as this being portrayed through subsidies as being modern, sustainable and future-oriented,” Chancellor Werner Faymann said after a cabinet meeting.

The complaint, which Vienna had already threatened in September and which will be filed next Monday, “is also of symbolic value against nuclear power,” the centre-left Faymann said.

The Hinkley Point project in southwest England, where France’s EDF is to build two reactors, is a major boost to the nuclear industry four years after the 2011 Fukushima disaster in Japan.

Despite opposition from activists and several member states, the European Commission approved the project in October after Britain modified funding plans for the £16-billion ($26-billion, 18.9-billion-euro) deal.

A spokeswoman for Britain’s Department of Energy and Climate Change said: “We are confident that the European Commission’s state aid decision on Hinkley Point C is legally robust and have no reason to believe that Austria will submit a challenge of any merit.”

[…]
But the EU Commission insists that the choice of energy source, no matter how controversial, is strictly up member states. EU member Austria has no nuclear power stations.

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ソフトバンク、インドで太陽光・風力を開発、現地企業などと合弁会社via 日経テクノロジーオンライン

ソフトバンクは6月22日、インド企業などと太陽光と風力発電を開発する合弁企業を設立し、インドの全地域を対象に投資し、再生可能エネルギーの発電所を展開していくと発表した。

 合弁相手となるのは、バーティ・エンタープライゼズ・リミティッド(以下、バーディ)と、フォックスコン・テクノロジー・グループ(以下、フォックスコン)。同2社とソフトバンクの3社間で、SBG Cleantech Limited(SBGクリーンテック)を設立する計画に関し合意した。今後、諸条件が整い次第、3社合同でSBGクリーンテックに出資する。
[…]
 ソフトバンクの孫正義社長は、「今回の協業でのゴールは、クリーンエネルギー市場を創造する会社を作り上げ、クリーンかつ再生可能なエネルギー資源によりインドの経済発展を強力に後押しすること。それぞれの分野でリーダーであるバーティとフォックスコンの両社とともに手を携え、このベンチャー事業を通じて将来のインドの繁栄へ向け努力していきたい」とのコメントを発表した。

[…]

もっと読む。

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避難指示解除で本当に安心が最優先? 危惧される子供や女性のがん多発 via 週プレNews

(抜粋)

100mSv以下の被曝による発がんリスクは少ないとする国の主張に臨床データを挙げて反論するのは、放射線医学総合研究所で主任研究官を務めたこともある医学博士の崎山比早子氏だ。

「旧ソ連の核製造工場から排出された核廃棄物がテチャ川に流され、流域住民が平均40mSvの被曝をしました。約3万人を47年間追跡調査したとこ ろ、線量に比例してがん死者が直線的に増えたのです。1グレイ(約1Sv)被曝すると、被曝していない人に比べて固形がんで亡くなる人は1.92倍、慢性 リンパ性白血病を除く白血病は7.5倍にはね上がりました。

また、イギリスの高線量地域では、4.1mグレイ以上の被曝から小児白血病が有意に増えることもわかっています。低線量被曝だから安全だという根拠はないのです」

崎山氏によると、そもそもICRPの委員長自身が2011年9月に開かれた国際専門家会議で放射線に安全量はないと話しているという。

「被曝リスクをゼロにすると社会的なコストが一気に上がる。そこで、原発を使い続けるなら1万人に1人が被曝でがんになってもそれを受け入れましょ うというのがICRPの考え。そもそも成人の放射線従事者が実質的に被曝許容とする年間20mSvを放射線への感受性の高い子供や女性にも一律に当てはめ るのはおかしい。国が20mSvで帰還を進めようとするのは犯罪的ともいえます」

福島で原発事故当時18歳以下だった約38万5千人のうち、甲状腺がんが確定したのは現在103人。福島県は「現時点で事故の影響は考えにくい」というが、チェルノブイリでは事故後、小児甲状腺がんが多発した。

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Are journalists critical enough when covering nuclear? via SciDevNet

Nuclear power is a major topic in South Korea. The country is one of the largest generators of electricity from nuclear plants in the world. It has 23 reactors built with a total capacity of 20.5 gigawatts, another five are under construction and two more are planned. This makes South Korea fifth in the world in installed capacity.

So the issue could not be left out of the World Conference of Science Journalists, held in Seoul this week. Some of the sessions on nuclear energy were sponsored by the Korea Atomic Energy Research Institute, the Korean Institute of Nuclear Safety (KINS) and Korea Hydro & Nuclear Power. Together, these groups described the benefits of nuclear power, new developments and how nuclear power contributes to the economy and environment.

In a conference full of journalists, anybody would expect to see plenty of critical questions around this sponsorship and the all-embracing assertions that nuclear power is a positive asset. But there weren’t any.

[…]

Earlier this year, Indonesia’s National Nuclear Energy Agency (BATAN) invited a group of journalists on a trip to sign an agreement with Russia to build the first nuclear plant in the country. According to Surjadi, activities on this trip will clearly be all about the benefits of nuclear power plants. He advises journalists to talk to different sources to balance their stories. But first, he said, they have to study.

“I think the key to being critical is to know the subject: to understand what nuclear power is and what the uses of it are. We have to do our homework as journalists,” Surjadi said.

But journalists cannot always do this alone, they also have to be supported by the organisations they work for, including their editors. That’s what Dominique Leglu, editor-in-chief of Sciences et Avenir, a French science news website, pointed out.

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福島、地下の廃液タンク漏えい 第1原発3号機 via 福島民報

東京電力は23日、福島第1原発3号機の原子炉建屋に隣接する施設で、地下にある廃液タンクが破損し、放射性物質を含む廃液が施設内に漏れていたことが分かったと発表した。漏れた廃液は地下の汚染水に混ざり、屋外への影響はないとみている。

漏えいがあったタンクはステンレス製で容量は約100トン。事故前に原子炉内の水を浄化した際に出た廃液が入っていた。廃液には放射性セシウムが1リットル当たり約5万5千ベクレル、コバルト60が約6万ベクレルの濃度で含まれていた。

続きは 福島、地下の廃液タンク漏えい 第1原発3号機

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World Court condemns French nuclear tests via New Zealand History

The ruling by the International Court of Justice was part of New Zealand’s long campaign against French nuclear testing in the Pacific. Though the French ignored the court’s interim injunction and carried on testing in the atmosphere, continuing protests soon forced them to move the tests underground.

New Zealanders had actively opposed French nuclear testing since the mid-1960s, when the tests were shifted from the Sahara to the Pacific. Mururoa Atoll in the Tuamotu Archipelago became the focal point for both the tests and opposition to them. Greenpeace vessels sailed into the test site in 1972, delaying tests by several weeks.

In 1973 the New Zealand and Australian governments took France to the International Court of Justice in an attempt to ban the tests.

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福島第1原発を歩く 労働環境改善も「廃炉」遠く 新潟 via 産経ニュース

平成23年3月の東日本大震災による東京電力福島第1原子力発電所事故から4年あまり。廃炉に向けた作業が進む同原発を取材する ことができた。原発の地上タンクに保管される高濃度汚染水の処理施設増設や作業員向け大型休憩所が完成するなど、ハード面の改善が進んでいる。一方、汚染 水対策がいまなお手探り状態にあることやベテラン作業員の不足などの課題も横たわり、30~40年後の廃炉完了に向けた道は険しいと感じた。

◆汚染水と格闘

(略)  福島第1原発の廃炉作業で最大の懸案は止めどなく増える汚染水だ。毎日約300トンの地下水が原子炉建屋内などに流れ込み、「事故で溶けた核燃料を冷やす 水」と混ざって発生する。鉄板をボルトでつなぎ合わせたタンクから溶接した丈夫なタンクに置き換えるなど対策を強化するものの、リスクとは隣り合わせだ。

◆2時間で1年分

「最大は毎時520マイクロシーベルトです」。津波の爪痕が生々しく残る構 内を回り、水素爆発した外壁に穴が空き鉄骨がむき出しになった3号機にバスが近づくと、車内で東電社員が線量計の空間放射線量を読み上げた。520マイク ロシーベルトの場所に2時間いると、国際放射線防護委員会(ICRP)が勧告している年間の人工放射線量1ミリシーベルト(1千マイクロシーベルト)を超 える。

(略)

◆作業員確保も課題

鉄筋コンクリート9階建ての大型休憩所は食堂や売店などを備えた「非管理 区域」となっており、多くの作業員がくつろいでいた。全面マスク着用が不要のエリアは構内の約9割に拡大したといい、労働環境は改善している。とはいえ、 長期の廃炉作業を支える作業員の確保は簡単ではない。現在、1日平均で2年前の倍以上の約7千人要員が必要となる中、桑原副所長は「東京五輪工事の影響 で、(元請け企業が)人集めに苦労している」。

線量が高い現場で指揮をとれるベテラン作業員の不足も懸念材料だ。東電によると、26年度の作業災害は前年度の2倍の64人となり、その約5割が作業経験半年未満だ。

原発作業員を支援する民間団体、アプリシエイト・フクシマ・ワーカーズ(いわき市)代表で元東電社員の吉川彰浩氏(35)は「作業員の成果を評価・発信し 『やりがい』を感じてもらうなどのケアに力を入れてほしい。構内の労働環境改善だけでなく、住環境にも目を向けて将来設計をできるようにすべきだ」と訴え た。

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被ばく医療にiPS細胞移植 福島医大で保管へ via 福島民友

「高度被ばく医療支援センター」の国指定を目指す福島医大が、人工多能性幹細胞(iPS細胞)を利用した原子力災害医療用の「細胞バンク」創設を目指して いることが19日、分かった。極めて高線量の被ばくで幹細胞が破壊されてしまうようなケースに備え、iPS細胞で作製した緊急移植用の細胞を同大に保管す る。

(略)

横内教授によると、極めて高線量の被ばくをすると皮膚や消化管の幹細胞がダメージを受け、細胞の移植が必要となる。計画では、iPS細胞のバンク化を進 めている他機関から細胞を分けてもらい、同大に「サブバンク」を設置。「造血幹細胞」や「皮膚幹細胞」の状態で保管し、災害時に供給できるようにする。横 内教授は「(1999年の)JCO事故では高度な被ばくで2人が亡くなった。そうしたケースの治療のため、3~5年後を目指してバンク化していきたい」と 語った。

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‘Green superpower’ Germany plots the way to a low-carbon world, closing Grafenrheinfeld nuclear power plant via The Sydney Morning Herald

Many countries face challenges in cutting greenhouse emissions but few set their bar as high as Germany.

Germany will permanently close the Grafenrheinfeld nuclear power plant in the country’s south on Saturday, the latest in a phase-out that is scheduled to see the European powerhouse’s last nine fissile fuel plants closed by about 2022.

Leaving nuclear is not without its critics, especially among big utilities: Sweden’s Vattenfall is reportedly suing the German government for €4.7 billion ($6.9 billion) to compensate for its losses.

And yet, German policymakers seem determined to stick to an ambitious – and unilateral – goal of slashing greenhouse gas emissions by 40 per cent on 1990 levels, even if that means shutting near zero-carbon nuclear plants along the way. The cuts deepen to 55 per cent by 2030 and 80-95 per cent by 2050.

The country is also betting big that renewable energy mainly from wind, solar and hydro power will continue to surge beyond its current share of about 28 per cent of total supply.

That ambition contrasts with the Abbott government’s push this week to get its 20 per cent reduction of Australia’s 2020 Renewable Energy Target through the Senate. The current bipartisan goal is a 5 per cent cut of 2000 levels, also by 2020, with the government likely to release its longer-term targets next month.

[…]

Germans freely admit that overly generous feed-in tariffs paid to those supplying renewable energy to the grid meant the country paid billions of euros too much to install solar panels on the roofs of some 3.5 million homes and small businesses in a country not known for its bounteous sunshine. Sunshine hours in Berlin, a relatively northern city, peak at an average of eight hours a day in May-July, but drop to just one hour by December, according to a local tourist guide.

The levy now costs users 6.17 euro cents (9¢) per kilowatt-hour, boosting residents’ costs for power to about 26 euro cents/KW-hour. [By contrast, this correspondent pays about 31¢ in Sydney for 100 per cent renewable power.]

The subsidies underpin Germany’s Energiewende, or energy transition, a policy which is gaining international attention. The term is apparently the most commonly searched-for German word, eclipsing angst and blitzkrieg, according to one local supporter.

Renewable energy’s share of the country’s total electricity supply has almost quadrupled. Nuclear’s share has roughly halved over the same period from 27 per cent to about 14 per cent.

The Grafenrheinfeld nuclear plant closing this weekend will take another 1.345 gigawatts of capacity off the market. The plant, built in 1981, produced about 1.6 per cent of the country’s total power output last year, Reuters reported.

[…]

Professor Hans Joachim Schellnhuber, director of the Potsdam Institute for Climate Impact Research, says Merkel – herself also a theoretical physicist by training – has understood the risks of climate change since she was a federal environment minister in 1994 hailing from the former communist East Germany.

Even in the wake of the failed Copenhagen climate summit in 2009, Merkel brushed aside Professor Schellnhuber’s readiness to counter sceptics’ claims that climate change wasn’t real.

“It was almost disappointing to me. I tried to explain to Merkel but she said, ‘I don’t want to hear it. This is crystal clear to me anyway,'” he said.

Likewise, she remains convinced Germany has to switch from fossil fuels to renewables, or as some officials said, would you bet against German industry?

“‘This is a no-brainer to me, but tell me rather what we can do about it,” Professor Schellnhuber recalls her as telling him.

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