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  2. Radioactive contamination - Wikipedia

    en.wikipedia.org/wiki/Radioactive_contamination

    Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency (IAEA) definition).

  3. Goiânia accident - Wikipedia

    en.wikipedia.org/wiki/Goiânia_accident

    The radiation source in the Goiânia accident was a small capsule containing about 93 grams (3.3 oz) of highly radioactive caesium chloride (a caesium salt made with a radioisotope, caesium-137) encased in a shielding canister made of lead and steel.

  4. Nuclear and radiation accidents and incidents - Wikipedia

    en.wikipedia.org/wiki/Nuclear_and_radiation...

    No immediate fatalities, though up to 200+ additional cancer deaths might have ensued from the radioactive contamination of the surrounding area; 270,000 people were exposed to dangerous radiation levels. Over thirty small communities were removed from Soviet maps between 1958 and 1991. [67] (INES level 6) [32] October 1957: Windscale fire, UK ...

  5. Radioactive decay - Wikipedia

    en.wikipedia.org/wiki/Radioactive_decay

    Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay.

  6. Lists of nuclear disasters and radioactive incidents - Wikipedia

    en.wikipedia.org/wiki/Lists_of_nuclear_disasters...

    The explosion released a cloud of radioactive gas (INES level 4). [5] 1990 Clinic of Zaragoza radiotherapy accident; 1987 Goiânia accident; 1986 Chernobyl disaster and Effects of the Chernobyl disaster; 1985 Explosion during refuelling of the K-431 (formerly K-31) submarine; 1982 Lost radiation source in Baku, Azerbaijan, USSR. [6]

  7. Radioactive waste - Wikipedia

    en.wikipedia.org/wiki/Radioactive_waste

    Boundaries to recycling of spent nuclear fuel are regulatory and economic as well as the issue of radioactive contamination if chemical separation processes cannot achieve a very high purity. Furthermore, elements may be present in both useful and troublesome isotopes, which would require costly and energy intensive isotope separation for their ...

  8. Category:Radioactive contamination - Wikipedia

    en.wikipedia.org/wiki/Category:Radioactive...

    Pages in category "Radioactive contamination" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. ...

  9. Lake Karachay - Wikipedia

    en.wikipedia.org/wiki/Lake_Karachay

    Lake Karachay (Russian: Карача́й), sometimes spelled Karachai or Karachaj, was a small lake in the southern Ural Mountains in central Russia.Starting in 1951, the Soviet Union used Karachay as a dumping site for radioactive waste from Mayak, the nearby nuclear waste storage and reprocessing facility, located near the town of Ozyorsk (then called Chelyabinsk-40).