[29], In the Acerinox accident of 1998, the Spanish recycling company Acerinox accidentally melted down a mass of radioactive caesium-137 that came from a gamma-ray generator. [32][33], On 3 and 4 March 2016, unusually high levels of caesium-137 were detected in the air in Helsinki, Finland. Five people were decontaminated and released, but 8 who were more directly exposed were taken to the hospital while the research building was evacuated. One was a caesium-137 pellet in a pocket of a shared jacket which put out about 130,000 times the level of background radiation at 1 meter distance. The biological behaviour of caesium is similar to that of potassium[10] and rubidium. [citation needed], In 1997, several Georgian soldiers suffered radiation poisoning and burns. When the samples were supposed to be returned the university was unable to find them. The mean contamination of caesium-137 in Germany following the Chernobyl disaster was 2000 to 4000 Bq/m². Caesium is a curious alkali metal known to be extremely reactive and super-explosive when it comes into contact with water - even at temperatures of -116 °C (−177 °F). A number of techniques are being considered that will be able to strip out 80% to 95% of the caesium from contaminated soil and other materials efficiently and without destroying the organic material in the soil. [1] [5] In industry, it is used in flow meters, thickness gauges,[5] moisture-density gauges (for density readings, with americium-241/beryllium providing the moisture reading),[6] and in gamma ray well logging devices.[6]. Over 9 years, two families had lived in the apartment. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature. [19] In March 2013, a fish caught near the plant had a record 740,000 becquerels per kilogram of radioactive caesium, above the 100 becquerels per kilogram government limit. This procedure has been used by researchers to check the authenticity of certain rare wines, most notably the purported "Jefferson bottles". [31], In March 2015, the Norwegian University of Tromsø lost 8 radioactive samples including samples of caesium-137, americium-241, and strontium-90. According to STUK, the country's nuclear regulator, measurements showed 4,000 μBq/m³ — about 1,000 times the usual level. They were eventually traced back to training sources abandoned, forgotten, and unlabeled after the dissolution of the Soviet Union. Inneholder radioaktive stoffer", "Cesium 137 now traced back to the property's garage and parts of its basement premises - Tiedote-en - STUK", "Cesium-137 contamination at STUK's premises in March 2016", NLM Hazardous Substances Databank – Cesium, Radioactive, Cesium-137 dirty bombs by Theodore Liolios, https://en.wikipedia.org/w/index.php?title=Caesium-137&oldid=990271557, Pages using multiple image with auto scaled images, Articles with unsourced statements from June 2019, Articles with unsourced statements from October 2020, Articles with unsourced statements from February 2020, Articles containing potentially dated statements from November 2015, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 November 2020, at 19:37. In Scandinavia, some reindeer and sheep exceeded the Norwegian legal limit (3000 Bq/kg) 26 years after Chernobyl. As of 4 November 2015[update] the samples are still missing. 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