Showing posts with label IAEA. Show all posts
Showing posts with label IAEA. Show all posts

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

March 10, 2006

Upcoming World Conference in Belarus on "Chernobyl After 20 Years"

From the Bahrain News Agency:
Minsk, March. 10, (BNA)

A world conference will be held on April 19, in the capital city of Belarus, under the theme of "Chernobyl after 20 years: Urbanization strategy and Sustainable development of the Unfortunate Area." The conference which will mark the 20th anniversary of the disaster will be attended by representatives of 50 countries and 16 international organizations.

The Russian News Agency, Itar Tass, said today invitations for the conference was sent by Belarus President to Director of the International Atomic Energy Agency (IAEA), the World Health Organization (WHO) and UN Development Organization (UNDO). During the conference, Belarus, the most hit country, Russia and Ukraine will present reports on the efforts they had made to alleviate the disaster's effects.

February 23, 2006

U.S. Seaports Deal and the Nuclear Terror Threat

The controversial Dubai Ports deal has spurred heated debate about the widsom of having foreign-owned corporations overseeing management of our national ports of entry. One of our main unsolved port security issues is the problem of uninspected freight containers, which some experts contend may be the route through which nuclear materials or devices could most easily be smuggled into the U.S. for use in a a terrorist attack. From the New York Times's "Big Problem, Dubai Deal or Not":
Only 4 percent or 5 percent of those containers are inspected. There is virtually no standard for how containers are sealed, or for certifying the identities of thousands of drivers who enter and leave the ports to pick them up. If a nuclear weapon is put inside a container — the real fear here — "it will probably happen when some truck driver is paid off to take a long lunch, before he even gets near a terminal," said [retired Coast Guard commander Stephen E.] Flynn, the ports security expert.

That is where concerns about Dubai come in. While the company in question has not been a focus of investigations, Dubai has been a way station for contraband, some of it nuclear. Abdul Qadeer Khan, the Pakistani nuclear engineer, made Dubai his transshipment point for the equipment he sent to Libya and Iran because he could operate there without worrying about investigators.

"I'm not worried about who is running the New York port," a senior inspector for the International Atomic Energy Agency said, insisting he could not be named because the agency's work is considered confidential. "I'm worried about what arrives at the New York port." [read full article, reg. req.]