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The truck, now contaminated by the cobalt-60, subsequently suffered a mechanical failure upon Sotelo's return from the junkyard and remained immobile near his home in Ciudad Juárez for 40 days. [4] Meanwhile, at the junkyard, the use of electromagnets for handling the scrap caused the cobalt-60 granules to spread throughout the yard.
Between March and July 1962, a radiation incident in Mexico City occurred when a ten-year-old boy took home an industrial radiography source that was not contained in its proper shielding. Five individuals received significant doses of radiation from the 200- gigabecquerel cobalt-60 capsule, [ 1 ] four of whom died.
1962 – Mexico City – 1962 Mexico City radiation accident [1] January 11, 1963 – Sanlian, Hefei, Anhui, China – A 10 Ci (370 GBq) cobalt-60 source from an industrial seed irradiator was removed from a buried waste repository and taken to a residence by a child. Over the next 5–9 days, six total family members were exposed.
The cleanup operation for the Goiânia accident [20] was difficult both because the source containment had been opened, and the radioactive material was water-soluble.. In 1983, a different incident in Mexico wherein cobalt-60 was spilled in an otherwise similar exposure led to a very different pattern of contamination, since the cobalt in such a source is normally in the form of cobalt metal ...
Cobalt-60 (60 Co) is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. [ 3 ] [ 4 ] : 39 It is produced artificially in nuclear reactors . Deliberate industrial production depends on neutron activation of bulk samples of the monoisotopic and mononuclidic cobalt isotope 59
a cylinder of radioactive source material (caesium-137 in the Goiânia incident, but usually cobalt-60) The Goiânia accident [ɡojˈjɐniɐ] was a radioactive contamination accident that occurred on September 13, 1987, in Goiânia , Goiás , Brazil, after an unsecured radiotherapy source was stolen from an abandoned hospital site in the city.
The plan was to build the plant along the Gulf of Kutch, an inlet of the Arabian Sea that provides a living for fishing clans that harvest the coast’s rich marine life.
The incident was discovered months later when a truck delivering contaminated building materials to the Los Alamos National Laboratory drove through a radiation monitoring station. Contamination was later measured on roads used to transport the original damaged radiation source. Some pellets were actually found embedded in the roadway.
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