Epidemiologic Studies

Rala, Iodine-131 & Cesium-137

[Report on] An Aerial Survey of Radioactivity Associated with Atomic Energy Plants, April 13, 1949

Location:

Active:
Inactive: ORNL, Building 4500N, Rm. H205 vault

Originating Office: Health Division, Health Physics Section

Finding Aids: ORNL Register 1-4397, 1948-1969

Disposition AuthorityUnscheduled

Series Description: This report describes aerial surveys conducted over the Oak Ridge X-10 area beginning in November 1948. The flights tested laboratory instruments as detectors of airborne radioactivity and collected data on the atmospheric diffusion of radioactive contaminants from production runs. Radionuclides produced during chemical separation runs, such as RaLa production, included xenon-133, iodine-131, and krypton-85. The report describes the measurement of 1,300 curies of iodine-131 released from 150 pounds of uranium slugs over a decay period of five days prior to dissolution and extraction of barium-140. Other sections discuss the types of instruments used in the survey, the calibration and performance, and the effects of altitude and weather conditions on airborne radioactivity.

Data Elements: 88, 95, 103, 114, 116, 118-119, 121