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Radiation Dosimetry in Uranium Mines. Part 1 - Radon Dosimetry Using Plastic Nuclear Track Detectors. Part 2 - Measurements of Gamma-ray Exposures.
Frank-AL; Benton-EV; Cassou-RM
NTIS: PB 294-657 :122 pages
The uranium mine environment is characterized by airborne radon-222 and its daughter products to which miners are exposed through breathing and by gamma- and x-rays from the uranium-235 and uranium- 238 chains to which the miners are exposed externally. The nature of the radon-daughter concentrations and the methods used to define and measure the exposures are explained through an extensive review of the literature. An improved passive track-etch dosimeter for personal use is proposed which has a measurement range of about 30 to 400 working level hours with a 95 pct confidence interval to 25 pct for individual detector measurements in relatively stable mine air. Some measurements of these dosimeters adapted to environmental use are also presented. A program of development for enhancement of dosimeter sensitivity and greater accuracy of measurement is outlined.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB 294-657
University of San Francisco
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division