PILOT COMPARISON OF TWO THERMOLUMINESCENT DOSIMETRY SYSTEMS WITH FILM BADGES IN ROUTINE PERSONNEL MONITORING.
NAVAL RESEARCH LAB WASHINGTON D C
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An intercomparison was made of the performance of two thermoluminescent dosimetry TLD systems and conventional film badges in a routine gamma-ray personnel monitoring operation. Quartz fiber pocket dosimeters were worn in some cases also, but were read out more frequently than the monthly interval used for the other systems. One of the TLD systems consisted of the U.S. Navy experimental prototype Computer-Indicator CP-748XN-1PD and Detectors DT-284XN-1PD, respectively the reader and dosimeters. The other was a commercial model of foreign manufacture which will be referred to here as the M system. Both of these types of dosimeters employed calcium fluoride TLD material sealed in a glass envelope with an internal ohmic heater. Both types of TLDs were found to contain radioactive contamination which gave rise to background readings in excess of ambient background by approximately 21-24 mRmo. Author
- Nuclear Instrumentation