Fukushima officials visit Starkville to learn about MSU’s testing of filters to contain radioactive materials via Mississippi State University

[…]

MSU’s Institute for Clean Energy Technology is the international leader in evaluating the performance of high-efficiency particulate air (HEPA) filtration systems used in nuclear power plants. ICET Director Charles Waggoner said HEPA filters, which are used in nuclear power plants’ containment ventilation systems, prevent the release of air with radioactive material into the atmosphere.

The Fukushima Daiichi Nuclear Power Plant was damaged in March 2011 by a tsunami that followed an earthquake. The team of engineers visiting ICET is responsible for designing the containment ventilation systems for the damaged reactors before the containment vessels can be breached to begin debris removal.

“Much of the world’s population is aware of what happened at Fukushima. Of the four reactors, three suffered a core meltdown,” Waggoner said. “They are at the point of trying to determine how to breach the containment vessel in order to start to retrieve the radioactive debris from the core melting down. That material will be highly radioactive and the process that will be used will also produce aerosols. The way you remove radioactive aerosols from an airstream is to, among other things, use HEPA filters at the end of the treatment train. They’re here because of our ability to evaluate the performance capabilities of HEPA filters under very adverse conditions.”

[…]

The visiting officials from Japan also will visit the Hanford Site in Washington State to discuss design considerations and the use of HEPA filters in the Waste Treatment and Immobilization Plant.

 

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Japan Plans to Build Underground Repositories for Radioactive Waste via Latin American Herald Tribune

TOKYO – The Japanese government unveiled on Friday a plan for the long-term storage of highly radioactive waste from the disaster-struck Fukushima and other nuclear power plants in the country that involves placing the waste in underground repositories in coastal areas.

The government hopes to begin talks with local authorities in September to get their approval for the repositories after explaining the technical advantages and logistics of every area and gaining the understanding of the citizens, Economy, Trade and Industry Minister Hiroshige Seko said at a press conference on Friday.

However, this seems unlikely in the face of the reluctance displayed by several regional governments and citizens of areas chosen earlier to temporarily house repositories for waste with medium or low levels of radioactivity from Fukushima.

The plan drawn up by the government includes parts of the Japanese archipelago designated more favorable on account of their geological conditions.

Around 900 locations have been identified as the safest places to store the waste, most of which are along the eastern coast of the main island of Honshu, including the Tohoku region, devastated by the 2011 earthquake and tsunami, as well as the islands of Shikoku and Hokkaido.

[…]

 

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In Ukraine, a radioactive nuclear ghost town near Chernobyl is a hot destination via The Washington Post

[…]

This base in Pervomaysk, Ukraine — about a four-hour drive from Kiev — once had 86 intercontinental ballistic missiles capable of destroying cities in Europe and the United States. Though the nuclear warheads have been removed, the command silo with much of its equipment, giant trucks that carried the rockets to the base and an empty silo were preserved so that people could see what had been secretly going on at nuclear missile bases in the former Soviet Union. The museum’s collection includes the R-12/SS-4 Sandal missile similar to those involved in the Cuban missile crisis and the RS-20A/SS-18 Satan, the versions of which had several hundred times the destructive power of the bomb dropped on Hiroshima.

“This is what the tourists come to see,” said Igor Bodnarchuk, a tour guide for Solo East Travel, a Kiev company that specializes in tours of Soviet ruins. “What else do we have to offer?”

[…]

Here, they stand outside an exploded nuclear reactor at Chernobyl and rifle through the remains of a nearby abandoned city — Geiger counter in hand. In Chernobyl’s shadow, they marvel at the giant “Moscow Eye,” an anti-ballistic-missile detector that rises 50 stories high and looks like a giant roller coaster.

Every day, a handful of travel companies ferry mostly foreigners to Chernobyl’s 19-mile “exclusion zone.” In 2016, Solo East Travel hauled 7,500 people there, up from only one trip in 2000.

[…]

Ivanchuk insists that people who go to Chernobyl are not morbid. “They are intelligent people who want to learn something new, and are often interested in nuclear power,” he said.

Likewise, people who venture to the missile base at Pervomaysk are interested in the Cold War. “It’s a place to remember — like the Holocaust — about a dangerous time in history and what it means to have nuclear weapons,” he said.

[…]

In 1994, three years after Ukraine became independent, it joined the Non-Proliferation Treaty and agreed to dismantle its 1,900 Soviet missiles. At the time, Ukraine boasted the world’s third-largest stockpile of nuclear warheads after Russia and the United States. Ukraine shipped its nuclear warheads to Russia and dismantled its silos, often blowing them up or filling them with cement. The control silo at Pervomaysk was the only one spared — so it could become a museum. The 46th Rocket Division, part of the 43rd Rocket Army, was disbanded in 2001.

[…]

The city of Pripyat was once a secret Soviet city, closed to anyone but workers of the Chernobyl nuclear reactor and their families. Now the city, an hour-and-a-half drive from Kiev, is a nuclear ghost town. Forty-nine thousand people were forced to evacuate the day after Chernobyl’s Reactor No. 4 exploded on April 26, 1986.

Nearly all the first responders and soldiers died from radiation poisoning while trying to contain the graphite fire and the radioactive particles spewing from the destroyed reactor, explained Bodnarchuk, our tour guide. Officially, only 31 firemen and soldiers were killed. But some believe that the disaster claimed at least 10,000 lives as wind carried radioactive material into Belarus and Northern Europe.

Even though critics have said that the designs of Chernobyl are outmoded and inherently unsafe, Russia reportedly is still using 11 similar nuclear reactors.

Today, visitors can stand across the street from the damaged reactor at Chernobyl, which recently was covered by a huge, $2.3 billion shield. But the highlight of the tour is, by far, the crumbling city of Pripyat. Though tour operators are warned to stay out of Pripyat’s buildings, tourists routinely stomp through the city, including the hospital where dying first responders were taken.

Tourists stick their Geiger counters against tatters of clothing in the hospital lobby and watch their machines shoot up to shockingly high levels — 85 microsieverts per hour. The normal range is .09 to .30 microsieverts per hour, according to the tour company. Most guides carry their own Geiger counters; many tourists come with their own.

Tour operators claim that a visit to Chernobyl is no more dangerous now than a flight from Ukraine to North America. This calculation includes spending 10 minutes in front of the burned-out reactor and no more than two hours in Pripyat.

[…]

Our Geiger counters went crazy as we drove through the new-growth forest, registering 26 sieverts per hour.

Our guide tried to calm fears about our exposure to radiation by assuring us that any high levels on our body would be detected by the machines we had to pass through on the way out of Chernobyl’s exclusion zone. Those machines — old Soviet steel contraptions that look like retro airport metal detectors — hardly inspire confidence.

Read more at In Ukraine, a radioactive nuclear ghost town near Chernobyl is a hot destination 

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検証・三反園流 第3部/中 原発に寛容な土地柄ゆえ 変節批判、どこ吹く風 via 毎日新聞

「原発いらない」「今すぐ止めて」。鹿児島県薩摩川内(せんだい)市の中心部で今月14日、市内にある九州電力川内原発の運転に反対するデモがあった。2012年から九電の営業所前で毎週金曜日に続けてきた抗議集会が5周年を迎え、反原発団体が主催した。

 参加したのは約50人。十数人程度にとどまる普段の金曜日に比べると盛況だったが、市外からの参加者も多く、同市の主婦、外園(ほかぞの)聡美さん(47)は「陰ながら反対する人は多いが、川内では声を上げられない人が多い」と素直には喜べない。

(略)

昨年7月の知事選で初当選した三反園訓(みたぞのさとし)知事は「脱原発候補」といわれたが、選挙戦で実際に争点となったのは4選を目指した前知事を評価するか否かだった。これに対し、同じく脱原発候補が勝利した10月の新潟県知事選では、原発が紛れもなく最大の争点になった。

 この違いはどこから来るのか。新潟県柏崎市などに立地する東京電力柏崎刈羽(かりわ)原発の再稼働に反対する矢部忠夫・同市議は「この地域は原発の建設時から反対運動が活発だった。さらに東電のトラブルが続いたことで、反対派の言うことももっともだと考える人が増えてきた」と語る。

 東電の原発では福島第1原発の事故前からトラブルが相次いでいた。02年には配管損傷などのトラブル隠しが、06年から07年にかけては検査データの改ざんが、いずれも柏崎刈羽原発を含む各地の原発で発覚。同原発では07年の中越沖地震で変圧器から火災も発生した。一方、川内原発では過去、深刻なトラブルはなく、反対運動も大きなうねりとはなっていない。

 九電は地域活動にも積極的だ。毎年9月に薩摩川内市で開かれる「川内大綱引」には、社員や家族約260人が参加し、地元と交流する。田中憲夫・川内商工会議所名誉会頭は「九電さんは地元への密着度が違う。良い意味での田舎企業で、まじめ。裏切らないという信頼感が地元にはある」と言い切る。

 原発に比較的寛容な土地柄ゆえの余裕なのか、三反園知事はメディアの「変節」批判にもどこ吹く風だ。知事選で選対幹部を務めた男性は「原発への姿勢を転換しても、県民の支持が落ちることにはなっていない」と分析。

全文は検証・三反園流 第3部/中 原発に寛容な土地柄ゆえ 変節批判、どこ吹く風

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In Conversation with Doris Dörrie by Peter Machen via Screen Africa

Peter Machen spoke to leading German filmmaker Doris Dörrie about her remarkable film Fukushima, Mon Amour which screened at the Durban International Film Festival as part of the German Focus last week.

One of Germany’s leading filmmakers, Doris Dörrie has made several films set in Japan. Her latest film takes place in the evacuated zone of Fukushima where an older geisha has returned to her home in the company of a young German woman who has traveled to the area with a foreign aid organisation.

[…]

On 1 January 2016, the Japanese government decided to open the zone again because, says Dörrie, they did not want to pay the subsidies for the refugees. “People were being asked to move back, but there was nothing to move back to. So that became the nucleus of the film’s story – this old lady goes back to her destroyed house. And there’s nothing there. Nothing whatsoever.“

And was she concerned about the impact on her own long-term health and that of her crew?

“We shot in the former zone for six weeks and I was there for three months. But by then, we had done so much research. I had taken dust samples and I had gotten them analysed by the German Institute for Radioactivity and they had assured me again and again that it would be alright to take a crew there and spend several weeks there. I really tried very hard to be on the safe side because I didn’t want to take on the responsibility for the entire team. I couldn’t do that.”

“So we made very, very sure that it was going to be okay. We all wore dosimeters that keep collecting the accumulated radioactivity that you’re exposed to. And we sent them in after we got back to Germany and we were just lucky that the readings turned out to be totally okay. That was, of course, a bit of luck also. It’s of course not safe to dig in the ground, to sit under a tree, to eat berries. All of that is not safe, of course not.”

Read more at In Conversation with Doris Dörrie by Peter Machen

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Top nuclear power disasters via EBR

Though nuclear power is one of the high potential energy sources, any accidents at the generation sites can cause severe damage to the nearby places. The vast amount of nuclear waste created by power plants can lead to high radiation and raise temperature levels. Any mishandling of radioactive material used in the nuclear power can pose potential risks to the environment and health of human beings.

Chernobyl nuclear disaster, Ukraine 1986:

[…]

Fukushima nuclear disaster, Japan 2011:

[…]

Kyshtym nuclear disaster, Russia 1957: The Kyshtym nuclear disaster occurred as a result of a radioactive contamination accident that took place on 29 September 1957 at Mayak, a plutonium manufacturing facility Russia for nuclear fuel reprocessing plant of the Soviet Union. A failure of the cooling system used for one of the tanks containing about 70–80 tons of liquid radioactive waste had led to the accident. It is classified as a Level 6 disaster on INES, making it the worst nuclear disaster after the Chernobyl and Fukushima Daiichi disasters. The event resulted in hundreds of deaths of the people staying in nearby villages to the production site.

Windscale Fire, UK 1957:

[…]

Three Mile Island accident, Pennsylvania US 1979:

[…]

Goiania accident, Brazil 1987: The disaster was a radioactive contamination accident that took place on 13 September 1987, at Goiânia, in the Brazilian state of Goiás.A stolen old radiotherapy source from an abandoned hospital site in the city had caused the accident. Four people were reported to have died as a result of the disaster, while more than 100,000 people undergone diagnosis for radioactive contamination, according to a study by International Atomic Energy Agency. Of the total people examined for contamination, 249 were identified to have been affected with significant levels of radioactive material in or on their bodies.

SL-1 Experimental Power Station, Idaho US 1961:

[…]

Saint-Laurent, France 1969: Considered as the worst civil nuclear power accident in France, the disaster took place as a result of meltdown of 50 kg of uranium in one of the gas cooled reactors began at the Saint-Laurent Nuclear Power Station on 17 October 1969. The power station is located in the commune of Saint-Laurent-Nouan in Loir-et-Cher on the Loire – 28km upstream from Blois and 30 km downstream from Orléans.The facility features two operating pressurized water reactors, with each having a capacity of 900MWe. The reactors are cooled by the water of the Loire River.

Read more at Top nuclear power disasters

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「核のごみ」最終処分場 経産相「青森県と福島県には配慮」via NHK News Web

原子力発電所から出る高レベル放射性廃棄物、いわゆる「核のごみ」の最終処分場の選定に向けて調査の対象になりうる地域を示した地図を、政府が28日午後、初めて公表することに関連し、世耕経済産業大臣は閣議のあとの記者会見で、青森県と福島県には配慮したいという認識を示しました。

(略)

そのうえで、世耕大臣は、国が、青森県との間で使用済み核燃料を中間貯蔵する施設があるため、最終処分場はつくらないとする約束を交わしていることを踏まえ、「引き続き順守していきたい」と述べました。

また、世耕大臣は、福島県については「政府として原発事故の収束など復興に全力を挙げており、相応の配慮が必要と考えている。高レベル放射性廃棄物の問題で何か負担をお願いする考えはない」と述べ、青森県と福島県には配慮したいという認識を示しました。

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Radioactively-hot particles detected in dusts and soils from Northern Japan by combination of gamma spectrometry, autoradiography, and SEM/EDS analysis and implications in radiation risk assessment via Science of the Total Environment

Mark Kaltofen and Arnie Gundersen

 

1. Introduction

The March 11, 2011 Great East Japan earthquake and ensuing tsunami resulted in the loss of > 15,889 lives (JNPA). The earthquake and tsunami also caused catastrophic damage to four of the six units at the Fukushima Dai-ichi Station. Radiological materials escaped from the reactor units at the power plant site via airborne plumes of contaminated gases, aerosols and particles, and by contaminated wastewaters (FNAIC, 2012 ;  Mikami et al., 2015). Radioactive dust particles consist of particulate matter with high concentrations of radioactive isotopes. These radioactively-hot dust particles can be inhaled or ingested, causing internal radiation exposure.

Airborne dusts can transport radioactive materials as trace contamination in homogenous collections of particles, or as isolated individual particles containing high concentrations of radioisotopes (Adachi et al., 2013 ;  Meszaros et al., 2016). Contaminated environmental dusts can accumulate in indoor spaces, potentially causing radiation exposures to humans via inhalation, dermal contact, and ingestion (Lioy, 2002).

[…]

Hot particles are small discrete radioactive particles capable of delivering radioactive energy to a target, including to an internal tissue. The U.S. Nuclear Regulatory Commission defines a hot particle as: “a discrete radioactive fragment that is insoluble in water and is less than 1 mm in any dimension.” (NRC, 1990) Proper calculation of an individual’s hot particle exposure is a matter of gathering accurate exposure data for input to the accepted standard model (Evans, 1997). Given the wide variability in hot particle sizes, activities, and occurrence; some individuals may experience a hot particle dose that is higher or lower than the dose calculated by using averaged environmental data. Calculated exposures to members of a group using averaged data may misstate exposure to the subgroup that is exposed to high activity particles. Excess cancer incidences based only on averaged data could wrongly assert causation from averaged doses alone, if higher unrecorded hot particle doses also existed.

[…]

2. Methodology

The purposes of the study were to identify and collect samples with a high potential to contain radioactively-hot particles for microscopic examination, to determine if local hot spots of contamination existed at the time of the Fukushima Dai-ichi meltdowns, and finally to document whether or not any hot spots persisted five years after the accidents.

[…]

4. Conclusions

The combination of gamma spectroscopy, autoradiography and SEM/EDS analysis was effective in isolating and analyzing hot particles. Many of these particles would have gone unidentified if only one of these techniques has been employed.

Samples have provided evidence that local hot spots of contamination existed at the time of the Fukushima Dai-ichi meltdowns in 2011. Local hot spots still persisted in 2016, five years after the containment failures in 2011.

Radioactively-hot dust and soil particles were routinely detected in samples from Northern Japan in both the 2011 and 2016 sample sets, with autoradiographic and SEM/EDS data showing that isolated particles could have substantially-higher specific activities than the bulk samples from which they were isolated.

[…]

Individuals in the contaminated zone, and potentially well outside of the mapped contaminated zone, may receive a dose that is higher than the mean dose calculated from average environmental data, due to inhalation or ingestion of radioactively-hot dust and soil particles. Accurate radiation risk assessments therefore require data for hot particle exposure as well as for exposure to more uniform environmental radioactivity levels.

 

 

 

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EDITORIAL: Is nuclear power compatible with human rights in Constitution? via The Asahi Shimbun

One year has passed since an evacuation order was lifted on July 12, 2016, for most parts of the Odaka district of Minami-Soma, Fukushima Prefecture, which lies within a 20-kilometer radius of the crippled Fukushima No. 1 nuclear power plant.

Stores and schools in the district are gradually being reopened. Voices of high school students are heard echoing through the streets at times of the day when they go to school and return home. At the same time, though, many stores remain shuttered and grass is running wild in the yards of many houses.

City government figures show that Odaka was home to only 2,046 residents as of July 12, less than one-sixth of the corresponding figure at the time of the 2011 disaster at the nuclear plant, which is operated by Tokyo Electric Power Co. (TEPCO).

The nuclear disaster, triggered by the Great East Japan Earthquake and tsunami, deprived many people of their “lives as usual,” which should have been guaranteed under the Constitution of Japan.

[…]

The government of Minami-Soma in May last year distributed a brochure containing the entire text of the Constitution to all households in the city.

Yasuzo Suzuki (1904-1983), a scholar of constitutional law who hailed from Odaka, included an explicit mention of the right to life in a draft outline of Japan’s Constitution, which he worked out immediately after World War II ended in 1945.

“The people shall have the right to maintain wholesome and cultured living standards,” the draft said, in a prelude to Article 25 of the current Constitution.

Katsunobu Sakurai, mayor of Minami-Soma, wanted the city’s residents to cast their minds back to a starting point at a time when life had taken a sudden turn for the worse for many of them.

Several tens of thousands of inhabitants of Fukushima Prefecture remain evacuated either within or outside the prefecture’s borders. Countless people have lost their longtime livelihoods or dwellings, which means their freedom to choose and change their residences and to choose their occupations (Article 22), along with their right to own or hold property (Article 29), were severely violated.

Many children were no longer able to attend schools in their hometowns, which means their right to an education (Article 26) was also compromised.

And most importantly, the tragedy drove many people into “disaster-related deaths.”

“The nuclear disaster has made it impossible to maintain the sort of life that is described in the Constitution,” Sakurai said emphatically. “That is unconstitutional, isn’t it?”

CONSTITUTION AS PILLAR AND POST

The Fukui District Court in May 2014 issued an injunction against the planned restart of reactors at Kansai Electric Power Co.’s Oi nuclear plant in a lawsuit filed by residents living near the power-generating facility in Fukui Prefecture.

“The use of nuclear energy is meant to fulfill the socially important functions of generating electric power, but that is inferior in standing to the core part of personal rights in light of the Constitution,” the court said in its decision.

[…]

More than 4 million people are living within a 30-km radius of nuclear power plants across Japan where residents may face evacuation orders in the event of an accident.

The future path of Japan should be reviewed from the perspective of whether the continued use of nuclear power would allow the country to maintain society in a state envisaged by the Constitution.

A national referendum in Austria voted against activating a nuclear power plant, which led the Central European nation to pass a law against building nuclear plants in 1978. Public calls for a phase-out of nuclear power intensified following the 1986 disaster at the Chernobyl nuclear power plant in the former Soviet Union, and a ban on the use of atomic power was included explicitly in Austria’s Constitution in 1999.

The right to choose the future path of Japan lies with every single member of the country’s public, with whom sovereign power resides. There should be broader discussions that take into account of what has taken place during the latest period of a little more than six years.

Read more at EDITORIAL: Is nuclear power compatible with human rights in Constitution? 

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「原発3強」の座を自ら捨てる韓国 via Chosun online

 英国では現在、韓国、中国、ロシアなど原発輸出国の間で総額21兆ウォン(約2兆1000億円)のプロジェクトの受注戦が繰り広げられている。英国北西部に2025年までに原発3基を建設する「ムーアサイド計画」がその舞台だ。当初日本とフランスが受注したが、資金難に陥ったため、新たな事業者選定が必要になったもので、各国が一斉に受注を狙っている。韓国も韓国電力が中心となり、韓国型原子炉「APR-1400」を輸出するため全力を挙げている。APR-1400は建設を一時中断した新古里原発5、6号機と韓国がアラブ首長国連邦(UAE)に建設している原発に採用されている。

韓国、中国、ロシアが世界を戦場に繰り広げる「原発三国志」は原発産業の流れを物語っている。世界の原発市場の主導権は、米国、フランス、日本から韓国、中国、ロシアという「新興3カ国」中心へと再編されている。とりわけ韓国は決められた予算内、期間内で原発工事を終えることが強みとされている。世界の原発の平均建設期間は82.5カ月だが、韓国がUAEに建設中のバラカ原発は工期を54カ月に短縮した。建設単価も韓国は1キロワット当たり1556ドルで、ロシア(2993ドル)や中国(1763ドル)より安く、原発の稼働効率性の指標となる利用率は86.4%で、世界平均(77.8%)よりも10ポイント近く高い。原発の故障停止率は世界平均が5.9%だが、韓国は1.1%だ。

英国の原発プロジェクトを受注すれば、数万人に達する新規雇用も期待できる。UAEの原発を受注した当時、韓国政府は10年間で11万人分の雇用創出効果があると試算し、現在も約3000人の韓国人が現地で働いている。最近与野党は追加補正予算案を決定する過程で対立した公務員の増員規模は1万2000人だった。

続きは「原発3強」の座を自ら捨てる韓国

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