Hanford Thermoluminescent Multipurpose Dosimeter.

An assessment of bias and uncertainty in recorded dose from external sources of radiation for workers at the Hanford Site

“…After 1983, the bias factor from this source is 1.0 because calibrationswere routinelyconducted using on-phantomexposures. Wilson (1957), Kocher et al (1971),Baumgartner(1959, and Fix et al (1981and Fix et al ( , 1982 The bias factor from this source is taken to be 1.0, with an uncertaintyin the annual recorded dose estimatedto be 1.1. Because environmentaluncertainty is not likely to be highly correlatedfor differentdosimeter readings for the same worker, the uncertaintyin doses accumulatedover many years is likely to be much smaller than 1.1.…”

Description and evaluation of the Hanford personnel dosimeter program from 1944 through 1989. [Contain Glossary]

“…Tenite II plastic to improvethe energy response characteristicsOf the system. The filter system provided a linear density response within 104 for a given gamma radiationdose at any energy between 50 keV and 2 MeV (Kocher et al 1971). For dose interpretationof a film dosimeter exposed to beta, gamma, and x-ray radiation,the density behind each of the four filters was measured.…”

“…Calibration and dose algorithmsfor the multi-elementTLD are described by Kocher et al (1971) and Fix. (a) The use of this system for beta, gan_a, and neutron dosimetry is describedby Haverfield,Nichols, and Endres (1972).…”

“…Kathren (1970) presented an evaluationof the basic dosimeter. Several characteristicsof the multipurposedosimeter are described in a report by Kocher et al (1971).…”

Radiation characterization, and exposure rate measurements from cartridge, 105-mm, APFSDS-T, XM774

“…The Hanford MPD has five element positions to hold thermoluminescent material and is designed to differentiate between beta particles, photons, and neutrons (Kocher et al 1971). For this study, only two of the available positions were used: one element position was unshielded to provide a skin (nonpenetrating) dose; the other element position was shielded to provide a 1-cm-depth (penetrating) tissue dose.…”