Showing posts with label Cesium-137. Show all posts
Showing posts with label Cesium-137. Show all posts

April 08, 2013

"Exposure: Radiation Victims Speak Out" Web Series Reveals Personal Struggles, Triumphs

Over 20 years ago, the Hiroshima newspaper Chugoku Shimbun sent a team of reporters to 15 nations around the world to gather personal accounts of people affected by radiation - from reactor accidents, accidental contamination, to nuclear weapons manufacturing and testing. The interviews were initially published as a series of eight newspaper features titled "Sekai no Hibakusha," or "Hibakusha (figuratively, "atomic bomb survivors") Around the World." This monumental series won a Japan Newspaper Publishers and Editors Association award in 1990, and was subsequently published in book form the following year. Executive Director of the Chugoku Shimbun Yukio Ogata explains,
"Largely as a result of the articles' success in bringing the public's attention to the dangers of radiation, a number of victims of radioactive contamination from areas as far-flung as Chernobyl and Bikini Atoll were able to participate in the world convention held in Hiroshima by the International Physicians for the Prevention of Nuclear War in October 1989...[T]he convention heard details concerning the damage caused by nuclear testing in Kazakhstan, which until then had been shrouded in secrecy. In turn, this disclosure of widespread destruction of the environment prompted the Chugoku Shimbun to instigate the first-ever investigation of the testing area.

At the same time, the articles served to emphasize the role that Japan could play to help radiation victims around the world. The fact that the articles have prompted the exchange of information concerning the treatment of radiation victims in Japan to help those in a similar plight in other countries is a great source of satisfaction to us at the Chugoku Shimbun. We hope that, in the future, Japan will become known as an information center for radiation victims and the treatment of their illnesses."
In March 2013, the Hiroshima Peace Media Center re-released the entire series of 134 interviews free online as "EXPOSURE: Victims of Radiation Speak Out". From the English-language introduction by Dr. Robert Jay Lifton, Director of the Center on Violence and Human Survival at the CUNY John Jay College of Criminal Justice notes,
"There is compelling appropriateness in the project's being undertaken by concerned journalists from Hiroshima. From the time the bomb was dropped, the Chugoku Shimbun, as Hiroshima's leading newspaper, has been a prime source of information about the experiences and feelings of the people of that city over subsequent decades. Its editors and writers have taken on what I call a 'survivor mission' on behalf of the city's victims, a commitment to transforming the fear, conflict, and pain of the survivors into an active exploratory enterprise of profound significance.

Their contribution goes even beyond their descriptions of the human effects of radiation. In the way they have approached their study, they have demonstrated what I call a species mentality, a commitment that transcends immediate group or nationality and extends to all of humankind. They evoke in us a sense of shared fate, of universal susceptibility to a technology that knows no boundaries, geographical or temporal. We are all in this together, as potential victims and potential perpetrators as well.
Among the regions and incidents covered in these interviews are Chernobyl, the 1987 Goiânia Accident in Brazil, contamination from the Cold War weapons program at Semipalatinsk, Kazakhstan, and the Hanford Nuclear Reservation site in Washington State.

[Image courtesy Hiroshima Peace Media Center: "The mushroom cloud as seen from Kure, approximately 18 kilometers southeast of Hiroshima. This photo was taken by Masami Oki about 40 minutes after the bomb exploded."]

More:

March 28, 2013

Radioactive Wild Boars Found in Northern Italy

The Italian newspaper Corriere Della Sera reports that traces of cesium-137 contamination have been found in dozens of wild boars taken by hunters in the northern Valsesia [Sesia Valley] forests, in the province of Vercelli.
[27 A]nalyzed samples of [the] tongue and diaphragm of animals slaughtered during the hunting season 2012/2013 [showed] level[s] of Cesium-137 higher than the threshold specified by Regulation 733 of 2008 as the tolerable limit in the event of a nuclear accident. According to the deputy of the Piedmont Region, Roberto Ravello, alarmism should be avoided because the health risks would be "contained and controlled."
According to Elena Fantuzzi, head of the Institute of Radiation Protection ENEA, the most immediate explanation is that the contamination originated from the 1986 Chernobyl accident. However, she cautions, (translation via GoogleTranslate) "[W]e must also consider the nuclear sites in the area, including the central Trino Vercellese ["Enrico Fermi" nuclear plant] dismantled in 1987 and the experimental site Enea, in Saluggia...[We can not exclude] the trail of toxic waste." Gian Piero Godio, a nuclear expert in the Legambiente Piemonte and Val d'Aosta region adds, "[There may be o]ther explanations....the district of Valsesia has no radioactive source[s]." More: Video news story (in Italian)

November 16, 2012

New Mitsubishi Videocamera Can "See" Radioactivity

Mitubishi Heavy Industries, Ltd. of Japan announced it will begin marketing early next year the Astrocam 7000 HS, a new type of video camera that can show a superimposed display of radioactivity on its wide-angle 180-degree image, allowing cleanup crews and emergency responders to see "hot spots" in real time. The Asahi Shimbun reports,
"The portable camera, which will apply technology jointly developed with the Japan Aerospace Exploration Agency (JAXA), is designed to allow for more efficient clean-up of radioactive contamination, an issue of great concern in Japan because of the nuclear disaster last year. The camera will use technology now in place on observation equipment aboard the ASTRO-H X-ray astronomy satellite operated by JAXA.

Tadayuki Takahashi, a professor of space physics at JAXA and project manager of the ASTRO-X, said, "The camera can measure radiation in high places, such as on roofs, and will lead to more efficient decontamination of radiation." Using two types of semiconductor sensors, the direction and strength of gamma rays emitted by radioactive materials such as cesium are measured and brought to light as a superimposed image on the visible landscape."
Mitsubishi this week also announced another breakthrough in nuclear cleanup technology, an armored seat that would reduce heavy equipment operators' exposure to radiation by half, and theoretically allow workers to remain twice as long in hazardous areas before receiving maximum permitted radiation doses:
The seat material, including body armor parts (shoulders, arms, chest/abdominal area, thighs, neck), consists mainly of tungsten sheet, which offers excellent radiation shielding capability. Although the seat weighs a considerable 130 kilograms (kg), individual parts weigh less than 20kg and most of their weight is integrally supported by the seat, so the burden on the operator is minimal.

In addition, the operator can put on and remove the armor-like parts easily by opening/closing the front like a vest...these features provide a high rate of radiation shielding while simultaneously minimizing fatigue during continuous work and inconvenience to machine operation from wearing such shielding.
Here, Mitsubishi Heavy Industries demonstrates the Astrocam and explains its technology in this one-hour press conference video (in Japanese, no subtitles).



[Image of demonstration camera view courtesy of Asahi Shimbun Online] More on the Mitsubishi Astrocam 7000HS camera:

September 24, 2012

Uranium Film Festival Coming to Berlin October 4-12, 2012

If I could snap my fingers and be in Berlin this October 4th through the 12th, I'd love to attend this remarkable Brazil-based international event:
The International Uranium Film Festival is dedicated to films about atomic bombs the whole nuclear fuel chain and radioactivity: Uranium mining, nuclear power plants, atomic bombs, nuclear waste, radioactive risks, nuclear medicine. The festival wants to stimulate the production of independent documentaries, movies and animated films about any nuclear or radioactive issue.
Uranium Film Festival is a project of the Yellow Archives, a cultural and educational organization that hopes to increase public information about nuclear power, nuclear waste, uranium mining and radioactivity in general. Yellow Archives is the first-ever film library in Brazil and Latin America dedicated to non-profit, educational and research films about the nuclear fuel chain and radioactivity, and makes its archives open to schools, universities and other non-profit organizations. Among the films to be screened are Roberto Pires' riveting Cesio-137: El Pesadelo de Goiânia (Cesium-137: The Nightmare of Goiânia), the 2011 Audience Award winner for Best Feature Film, and Bill Kiesling's 2012 "Yellow Oscar"-winning documentary, "Not for Public Release: a Nuclear Incident in Lock Haven."

The next Uranium Film Festival is scheduled for May 2013 at Rio de Janeiro's Museum of Modern Art. The Uranium Film Festival and the Yellow Archives depend primarily on private funding for their work; you can get involved by becoming a sponsor, or by making a donation to the film festival. The full program of the upcoming October event in Berlin is available here [PDF], and you can also view the program brochure of the 1st Uranium Film Festival from 2011.

September 05, 2012

Memorial Mass for Victims of the Goiânia Accident, 25 Years On

For our readers in Brasil, on 13 September there will be a 25th Memorial Mass commemorating the victims of the 1987 Goiânia accident held at the Igreja Nossa Senhora de Gloria, Jardim Meriti, São João de Meriti, Rio de Janeiro (via MESPE.br).

For more background information on the Goiânia accident that claimed the lives of at least 4 people, sickened dozens with radiation illness, and caused widespread contamination (INES 5) throughout several districts surrounding the accident epicenter, see our April 30, 2012 post: http://corium.blogspot.com/2012/04/radioactive-casefiles-goiania-accident.html

[Read the MESPE.br post in its original Portuguese.]

May 18, 2012

Radioactive Cesium Found in Rats Near Fukushima

This story from Japan illustrates how radioactive contamination can be dispersed by animal vectors, as well as weather, water, and human intervention: NHK News reports cesium has been found in the brains of wild rats in the forested area about 30km from the beleaguered Fukushima Daiichi nuclear plant.

Apodemus speciosus is actually a species called the Large Japanese Field Mouse, so I'm uncertain if the article is referring to both rats and mice, or just the Large Japanese Field Mice. The linked NHK News article contains a 1:37 video (in Japanese) which may provide a more detailed explanation. Judging from size alone, the rodents shown captured in the video look to be A. speciosus, not the typical species of domestic rat common in Japan.
[English text via Google Translate]

Highly Radioactive Cesium from Rat Cortex

Radioactive cesium in the 3100 Becquerels [range] was detected in rats in the wild, captured in the forest approximately 30 km from [the] nuclear power plants. An expert at Fukushima Daiichi Tokyo Electric Power Company [said] there is a need to examine continuously the impact on wildlife.

...Apodemus speciosus was captured wild in October and December last year in the forest. As a result of examining the concentration of radioactive cesium accumulated in the body of 12 mice...on average, per kilogram, from rats captured in the village of Kawauchi [measured at] 3,100 becquerels, in Kitaibaraki 790 becquerels has been detected.

Radiation dose in the air of the capture location, Kawauchi village, is in the [range of] 0.2 μSv - 3.11 μSv per hour, and [in] Kitaibaraki, where radiation dose is high, [there was a tendency to find] higher concentrations of radioactive materials in the rat[s]. The results of the survey, Yoshihisa Kubota, Sub-Leader of the National Institute of Radiological Sciences, [indicate] "There is a need to examine ... rats to study the effects of radiation to the same extent as human animals, continue to impact on wildlife of radioactive material."
Linked below are a few studies that may give an idea of how radiation spread by animal vectors like rats contributes to environmental contamination: when contaminated vectors are consumed by predators, if vector and subsequent predator wastes contain appreciable radioactive contamination, and also, if vectors die naturally, how much contamination is left in the soil, landfills, etc. According to one of the articles linked below, larger wildlife like deer pose a greater risk due to their larger body size, wider habitat range, and longer lifespan. Rats in particular would be a particularly important vector to study, given their affinity for human dwellings and garbage dumps. Please note that academic or library access may be needed to access the linked journal papers.[Image from video screen capture from the story on NHK news.]

April 30, 2012

RadioActive! Casefiles: The Goiânia Accident (1987)

A little over one year after Chernobyl focused the world's attention on what was then the worst-ever civilian industrial nuclear disaster, the Brazilian city of Goiânia became the scene of another major radiological accident, resulting in several fatalities and widespread contamination. [A definitive 1988 report is available online at IAEA.org. See links and videos at the bottom of this post.]

On September 13, 1987, two men broke into the Instituto Goiano de Radioterapia (IGR), a partially demolished private cancer radiation therapy facility, and carted away a 300kg object in the belief they'd a found a valuable scrap metal item. Roberto dos Santos Alves and Wagner Mota Pereira took the object to Alves' home, about one-half kilometer north of the clinic, and began to dismantle it.

Over the next few days Alves and Pereira cut away at the metal exterior and managed to puncture the casing. Despite the fact both men started to become violently ill with vomiting and diarrhea, they continued their efforts, eventually cracking open the device - inside was a smaller metal canister with a movable "window." When the inner canister's window was pried open, it revealed a mysterious blue glow inside the inner shell. The men scraped away and extracted several small chunks of the glowing blue substance within with a screwdriver to keep as "souvenirs."

On September 18th, Alves sold the object to Devair Alves Ferreira, a nearby scrap dealer. Fascinated by the blue glow, Ferreira invited his family and friends over to see and touch the object. Ferreira's brother Ivo brought some of the powder from the canister home and spread it on his floor; innocently, his 6-year-old daughter Leide played with the powder, rubbed it on her skin, and even ingested a small quantity. Over the next several days, she and others who handled the glowing powder fell ill with vomiting, diarrhea, skin rashes, burns, and blisters.

Now fearing the object was "killing her family," the scrap dealer's wife Gabriela placed it in a plastic bag, boarded a bus, and brought it to the Vigilancia Sanitaria hospital on September 28. One of two doctors who met with Gabriela that day suspected the danger, and placed the bag on a chair in the outer hospital garden, as far away as possible from human contact.

The following morning, a visiting medical physicist with a borrowed radiation detector confirmed the doctor's fears - the hospital now was massively contaminated with radiation. The physicist, identified only as "W.P." in official reports, initially encountered a great deal of resistance alerting authorities to the severity of the emergency. By the end of the following day, W.P. convinced the Secretary for Health of Goias State and the Director of the Department of Nuclear Installations in CNEN to begin a massive search and cleanup operation in the area.

What Alves and Pereira unknowingly brought home from the abandoned clinic was a lead-shielded cancer therapy device containing a lethally radioactive cesium137 chloride (salt) core. All told, 130,000 people were tested for radiation at area hospitals, about 250 were found to be contaminated, and 20 required treatment for radiation sickness. Several houses within the neighborhood had to be demolished, and the rubble buried in a remote waste site. The cleanup effort also was hampered not only by the length of time that passed since the core was exposed and handled, but also by the fact the radioactive powder was water-soluble.

Four deaths are attributed to direct exposure to the cesium core: Leide and Gabriela Ferreira, and two of Devair Ferreira's scrapyard employees succumbed to radiation poisoning about a month after receiving radiation doses of 4.5 to 6.0 Gy (500 to 600 REM). Leide was buried in a lead coffin surrounded by concrete in a Goiânia cemetery, where crowds protested her burial, fearing their relatives' graves would be contaminated. Remarkably, Devair Ferreira survived his massive 7.0 Gy exposure.

The accident - rated 5 on the International Nuclear Event Scale [INES] - spread radioactive contamination throughout the Goiânia districts of Aeroporto, Central, and Ferroviários. To this date an estimated 7 of the device's nominal 50 TBq (terabecquerels) of radioactivity remain unaccounted for.

Image at top from the IAEA 1988 report on the Goiânia Accident. Lower image, by Alexander Sassaki/SIPA Press appears in "Radiation Accident Grips Goiania," by Leslie Roberts, Science, 1987 (see link below). *Featuring very effective use of Kraftwerk's "Radioactivity" as the backing track when one of the scrapyard employees discovers the cesium's blue glow in a dark storeroom, recalling the famous story of when the Curies found their radium-purifying lab apparatus aglow at night