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| Duration | 1980–1989 |
|---|---|
| Location | Kramatorsk,Ukrainian SSR |
| Coordinates | 48°44′03″N37°36′22″E / 48.734167°N 37.606111°E /48.734167; 37.606111 |
| Type | Radiation accident |
| Cause | Loss of radioactive material |
| Deaths | 4 |
TheKramatorsk radiological accident was aradiation accident that happened inKramatorsk,Donetsk Oblast, ineasternUkrainian SSR from 1980 to 1989. A small capsule containing highly radioactivecaesium-137 was found inside the concrete wall of an apartment building, with a surface gamma radiation exposure dose rate of 1800 R/year.[1] The capsule was detected only after residents requested that the level of radiation in the apartment be measured by a health physicist.[1]
The capsule was originally part of a radiation level gauge and was lost in the Karansky quarry in the late 1970s. The search for the capsule was unsuccessful and ended after a week. The gravel from the quarry was used in construction.[2] The caesium capsule ended up in the concrete panel of apartment 85 of building 7 on Marii Pryimachenko Street (at the time under the Soviet name Hvardiitsiv Kantemyrivtsiv), between apartments 85 and 52.[1]
Over nine years, two families lived in apartment 85.[1] A child's bed was positioned right next to the wall containing the capsule.[1] The apartment was fully occupied in 1980. A year later, an 18-year-old young woman living there suddenly died. In 1982, her 16-year-old brother died, followed by their mother. Despite all residents succumbing toleukemia, the flat did not garner much public attention. Doctors, unable to identify the root cause of the illness, attributed the diagnosis to poor heredity. A new family moved into the apartment, and their son also died of leukemia. His father initiated a thorough investigation, which led to the discovery of the vial in the wall in 1989.
By the time the capsule was discovered, four residents of the building had died from it and 17 more had received varying doses of radiation.[2] Part of the wall was removed and sent to theInstitute for Nuclear Research, where the caesium capsule was removed, identified by serial number and disposed of.[1]
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