Air Concentrations of 239Pu and 240Pu and Potential Radiation Doses to Persons Living Near Pu-contaminated Areas in Palomares, Spain

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Abstract
On 17 January 1966, an accident during a refueling operation resulted in the destruction of an air force KC-135 tanker and a B-52 bomber carrying four thermonuclear weapons. Two weapons, whose parachutes opened, were found intact. The others experienced non-nuclear explosion with some burning and release of the fissile fuel at impact. Joint efforts by the United States and Spain resulted in remedial action and a long-term program to monitor the effectiveness of the cleanup. Air concentrations of 239Pu and 240Pu have been continuously monitored since the accident. The average annual air concentration for each location was used to estimate committed dose equivalents for individuals living and working around the air sampling stations. The average annual 239Pu and 240Pu air concentrations during the 15-y period corresponding to 1966–1980 and the potential committed dose equivalents for various tissues due to the inhalation of the 239Pu and 240Pu average annual air concentration during this period are shown and discussed in the report.

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