Continuous working-level measurements using alpha or beta detectors.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, RI 8237, 1977 Jan; :1-14
The Bureau of Mines has investigated techniques of using gross alpha or beta detectors to continuously measure working levels. Both methods measure radioactive particulates collected on a filter paper using a constant airflow. Inherent-error studies indicate a value of about +/-3 percent for the gross alpha method and about +/-8 percent for the beta method in typical mine atmospheres. However, the beta method avoids problems associated with alpha detectors and is therefore more useful. Applications of these continuous working- level detectors include work area monitoring of exposure levels in underground openings, such as mines and caves, and calibrating personal dosimeters exposed over extended time intervals.
Underground mining; Uranium; Alpha particle detectors; Beta particles; Dosimeters; Radiation hazards; Rodon 222; Uranium mines
IH; Report of Investigations
NTIS Accession No.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, RI 8237