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<福島第1原発事故>飯舘村で放牧再開 畜産再生へ前進 via 河北新報

東京電力福島第1原発事故に伴う避難指示が昨年春に一部を除き解除された福島県飯舘村で23日、牛の放牧が始まった。牧草地での放牧実施は原発事故後初めて。県と農家が実証実験と位置付け、牛の体内の放射性物質濃度などを確認し産地再生につなげる。

山田猛史さん(69)が避難先の福島市で飼育する繁殖牛6頭を、地元の畜産組合所有の約2ヘクタールに放した。約3カ月間放牧する。

牧草地は除染を終えており、土の入れ替えによる牧草の生育への変化や、除染対象外の隣接する山から流れる雨水の影響を調べる。

山田さんは昨年6月、村内で水田を牧草地に転用する実証実験を実施。放牧した牛6頭の血中セシウム濃度などを調べた結果、全て検出限界値未満だった。

(略)

山田さんは100頭を飼育できる牛舎を村内に建設中。繁殖牛に加え、今後は肥育牛の飼育を福島市で始める。いずれは村内で繁殖から肥育まで手掛け、原発事故で途絶えた村のブランド牛「飯舘牛」の復活を目指す。

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準備宿泊1カ月、戻らぬ住民 福島県大熊町 via 日本経済新聞

 東京電力福島第1原子力発電所事故で全町避難が続く福島県大熊町で、住民が夜間も自宅で過ごせる「準備宿泊」が、原発の立地自治体としては初めて開始してから24日で1カ月となる。来春を目指す避難指示解除に向けての動きだが、故郷に戻った住民は少ない。帰郷した住民からは安堵の声の一方、事故から7年たっても進まない復興に不満の声も上がっている。

「生まれ育った土地だから、やっぱりほっとするね」。大川原地区に暮らす井戸川清一さん(64)は20日、2017年にリフォームしたばかりの自宅で愛犬をなでた。「周りに人はいないけど、ここでのんびり暮らせるのがいい」
 
避難先の南相馬市で家を購入したが、住民の帰還を前提とした準備宿泊が始まると聞き、帰郷を決断した。自宅の放射線量を線量計で測ると、環境省が定める基準を下回る1日あたり約2マイクロシーベルトだが、山中など除染していない場所の線量は高い。「子供がいる人や若い人は怖がるだろう」と話す。
[…]

 

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福島第1原発事故 飯舘・ADR打ち切りへ 東電が和解案受諾拒否で /福島 via 毎日新聞

[…]

ADRを申し立てていたのは、蕨平地区33世帯111人と比曽地区57世帯217人で、両地区とも居住制限区域に指定されていた。センターは蕨平地区の26世帯87人に計約4800万円、比曽地区の53世帯177人に計約8200万円をいずれも慰謝料として支払う和解案を示していたが、東電は受諾を繰り返し拒んできた。

 センターは東電が受諾を拒否した場合、手続きを打ち切る方針を住民側に伝えており、住民は民事訴訟に切り替えるかどうか選択を迫られることになる。ADRをめぐっては4月、浪江町民約1万5000人による申し立てが東電の受諾拒否で打ち切りが決まった。

 飯舘村の両地区の住民側弁護士は「和解案を尊重するといいながら拒否を繰り返す東電の対応は不誠実だ。住民の意向を踏まえ提訴するかどうかを慎重に検討したい」と話した。東電は「個別の案件についてはコメントを差し控えたい」としている。【岸慶太】

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Air duct corrosion and holes found at seven nuclear plants via The Japan Times

Corrosion and holes have been found in ventilation ducts at 12 reactors at seven nuclear plants across the country, the Nuclear Regulation Authority said Wednesday, raising concerns that workers could be exposed to radiation in the event of an accident.

The governmental nuclear watchdog released the results of a nationwide survey it had ordered following a revelation in December 2016 that corrosion had left multiple holes in the air ducts of the No. 2 reactor at Chugoku Electric Power Co.’s Shimane plant in western Japan. That reactor was not included in the survey.

Corrosion and holes have been found in ventilation ducts at 12 reactors at seven nuclear plants across the country, the Nuclear Regulation Authority said Wednesday, raising concerns that workers could be exposed to radiation in the event of an accident.

The governmental nuclear watchdog released the results of a nationwide survey it had ordered following a revelation in December 2016 that corrosion had left multiple holes in the air ducts of the No. 2 reactor at Chugoku Electric Power Co.’s Shimane plant in western Japan. That reactor was not included in the survey.

Serious corrosion was found at the No. 3 unit of the Kashiwazaki-Kariwa plant in Niigata Prefecture operated by Tokyo Electric Power Company Holdings Inc. and may have abnormally affected ventilation of the central control room, the watchdog said.

[…]

Corrosion or holes were found in steel or galvanized steel ducts at Tohoku Electric Power Co.’s Onagawa nuclear plant, Japan Atomic Power Co.’s Tokai No. 2 nuclear plant, Tepco’s Fukushima No. 1 nuclear plant and Kashiwazaki-Kariwa nuclear plant, Chubu Electric Power Co.’s Hamaoka plant, Hokuriku Electric Power Co.’s Shiga nuclear plant and Chugoku Electric’s Shimane plant.

If an accident occurs, radioactive materials could flow into a plant’s central control room through such holes, putting workers in danger of radiation exposure.

At the No. 3 reactor at the Kashiwazaki-Kariwa plant, a crack as large as 13 centimeters in length and 5 cm in width was found. A total of nine holes and cracks have been discovered at the Nos. 3 and 7 units at the plant.

All the reactors with corrosion were boiling-water reactors, the same type used at the Fukushima No. 1 plant, which spewed a massive amount of radioactive material into the atmosphere following the March 2011 earthquake and tsunami.

Read more at Air duct corrosion and holes found at seven nuclear plants

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7原発12基の換気系ダクトに腐食・穴 柏崎刈羽、機能異常も via 東京新聞

 原子力規制委員会は二十三日、全国の原発などで空調換気系ダクトに腐食による穴などがないか調査した結果、一部に腐食や穴が見つかったのは七原発十二基だったと明らかにした。このうち東京電力柏崎刈羽3号機(新潟県)は腐食が大きく、中央制御室の換気機能に異常がある可能性がある。再稼働審査に合格した同7号機でも異常がないか確認する。他の十基には異常はないという。

 中国電力島根原発2号機(松江市)の中央制御室のダクトで二〇一六年十二月に腐食による複数の穴が見つかった問題を受け、規制委が昨年一月、各電力事業者に調査を指示していた。穴が開いていると、原発事故時は放射性物質が中央制御室に流入し、運転員が被ばくする恐れがある。

 規制委によると、ダクトの材質は鉄や亜鉛メッキ鋼。腐食や穴が確認されたのは東北電力女川3号機(宮城県)、日本原子力発電東海第二(茨城県)、東電の福島第一の6号機と柏崎刈羽3、4、6、7号機、中部電力浜岡3~5号機(静岡県)、北陸電力志賀1号機(石川県)、島根1号機(松江市)。一部の原発については事業者が既に明らかにしている。

 柏崎刈羽では、3号機で見つかった縦約十三センチ、横約五センチの亀裂が最大だった。3、7号機では穴や亀裂が計九カ所あった。

 これらは全て福島第一原発と同じ沸騰水型原発だった。

続きは7原発12基の換気系ダクトに腐食・穴 柏崎刈羽、機能異常も

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Hiroshima Atomic Bomb Survivor Calls for Nuclear Reform at Kennedy School via The Harvard Crimson

Keiko Ogura, 80, a survivor of the atomic bomb dropped on Hiroshima, Japan in 1945, visited the Kennedy School to caution against the use of nuclear weapons worldwide Sunday.

Ogura was eight years old on August 6, 1945, when the United States dropped a nuclear weapon on Hiroshima during the final months of World War II. The bomb immediately killed over 80,000 people and caused widespread radiation exposure that would later kill tens of thousands more.

[…]

After staying silent for more than 30 years, Ogura said the death of her husband Kaoru Ogura in 1979 spurred her to tell her story. Her husband, who served as the director of Hiroshima’s Peace Memorial Museum, spent much of his life setting up interviews between survivors, journalists, and psychologists to examine and raise awareness around the deadly physical and mental consequences of the bomb.

Ogura said residents of Hiroshima in part chose to stay silent because they feared that, if they told the truth about their experiences, they would be shut out by loved ones and by society at large. In the wake of the bomb drop, some cancelled engagements and weddings after discovering their partners had been exposed to radiation, fearful the exposure might lead to genetic defects in their offspring, according to Ogura.

“People tried not to talk about what happened, but we were horrified every day,” Ogura said.

Yusaku Kawashima, a master in public administration student originally from Japan helped organize the event. She said the event in part came as a response to the recent escalation in North Korea’s nuclear capability.

[…]

“We survivors work not to repeat the evil,” Ogura said. “Somebody who saw this evil needs to do something to prevent the evil.”

“Telling our story is, in a way, caring,” Ogura added.

Read more at Hiroshima Atomic Bomb Survivor Calls for Nuclear Reform at Kennedy School 

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広島の森さん、初訪米 via 徳島新聞

被爆死米兵調査に尽力

 【サンフランシスコ共同】広島の原爆で死亡した米兵捕虜の身元特定に尽力し、訪日したオバマ前米大統領にねぎらいの抱擁を受けた歴史研究家、森重昭さん(81)=広島市=が22日、サンフランシスコ国際空港に到着し、初めて訪米した。米兵捕虜の遺族と森さんの交流を描いたドキュメンタリー映画の上映会に参加する。

自らも被爆者である森さんは「米兵の遺族との対面が(訪米の)一番の目的。どうしても会いたい」と話した。

(略)

ドキュメンタリー映画は「ペーパー・ランタン(灯籠流し)」。

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Southeast Asia’s only nuclear plant is a tourist site. That may change as Philippines weighs using it decades after it was built via South China Morning Post

As power demand soars in one of the world’s fastest-growing economies, the Philippines’ energy ministry is looking seriously again at nuclear power

[…]

The Philippines splashed out US$2.3 billion on the 621-megawatt Bataan Nuclear Power Plant, but mothballed it after the collapse of a dictatorship and the devastating Chernobyl disaster.

[…]

As power demand soars in one of the world’s fastest-growing economies, the Philippines’ energy ministry is looking seriously again at nuclear power and urging President Rodrigo Duterte to fast track its revival.

[…]

The Department of Energy has asked Duterte for an executive order declaring the Philippines ready for a nuclear power programme, said Gerardo Erguiza, energy assistant secretary.

[…]

Marcos ordered the Bataan nuclear plant built in 1976 in response to an energy crisis, convinced nuclear energy was the solution to the Middle East oil embargo of the early 1970s.

Completed in 1984, the government mothballed it two years later following Marcos’ ouster and the deadly Chernobyl nuclear disaster.

From 2009, the government opened the plant to tourists for a fee, helping defray the cost of maintaining it, along with an annual state budget that this year was 32 million Philippine pesos (US$612,000).

[…]

Opposition to reviving Manila’s nuclear ambitions remains strong, with advocates citing a reliance on imported uranium, high waste and decommissioning costs, as well as safety concerns.

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福島沖スズキ漁6月再開へ 主要魚種が出荷可能に via 日本経済新聞

福島県漁業協同組合連合会(福島県漁連)は23日、同県いわき市で開いた会合で、東京電力福島第1原発事故により福島県沖での漁を自粛しているスズキなど3魚種を、試験操業の対象に追加することを決めた。月末の組合長会議で正式決定し、6月から漁を再開する。

これで原発事故前に「常磐もの」として人気が高かった主要魚種全てで漁が可能になる。県漁連の野崎哲会長は会合終了後、「これからちょうど漁の季節になるので、試験操業そのものに一層の弾みがつくとありがたい」と述べた。

(略)

試験操業では、国の基準(1キロ当たり放射性セシウム100ベクレル以下)より厳しい独自基準(同50ベクレル以下)を満たしたものだけを出荷する。

福島では原発事故後に44魚種が出荷制限となり、現在も継続中なのは7魚種。スズキなどの3魚種は県の数年間の検査で国の基準を大きく下回ったため、今年4月に出荷制限が解除された。〔共同〕

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Japan’s government weighs dumping radioactive Fukushima water into the Pacific via Bellona

As the cleanup of a triple meltdown following an earthquake and tsunami at the Fukushima nuclear power plant drags into its seventh year, one of the biggest continuing threats is less from airborne radioactivity than it is simple water.

[…]

At the time, officials began pumping millions of liters of water into the destroyed reactors to keep them cool, often dumping it from helicopters and spraying it through water cannons. In the years since, the water inundation has become less dramatic, but in the absence of any other way to keep the molten fuel cool, the flow of water continues to flow through the remains of the reactors at the rate of some 160 tons of water a day.

While much of that water undergoes purification to remove significant amounts of radiation, filters can’t cleanse the water of tritium, a radioactive isotope of hydrogen — a process likened by some scientists to separating water from water.

As a result, water contaminated with tritium is building up and space to store it at the disaster site is running out. Of the 1.13 million-ton water storage capacity that the plant has, some 1.7 million tons have been used up.

Cleanup workers have to build a new steel water tank at the rate of one every four days to contain it all, and space to build more is becoming scarce. According to Japan’s Ministry of Economy, Trade and Industry, the tanks already sprawl over an area that could accommodate 32 football fields. All of the storage, says the government, will run out by 2021.

[…]

Despite the national and worldwide case of nerves such a decision might provoke the Japanese government says it can do it without a threat to the country’s fishing industry. Tritium, after all, is a substance that naturally occurs in rivers and seabeds – even tap water. What’s problematic with the tritium at Fukushima, though, is that its levels in the Fukushima water are 10 times higher than Japanese national standards for dumping it.

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