1989 neutron and gamma personnel dosimetry intercomparison study using RADCAL (Radiation Calibration Laboratory) sources

Technical Report · Mon Oct 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/6282586· OSTI ID:6282586

Sims, C S; Casson, W H; Patterson, G R ^[1]; Murakami, H ^[2]; Liu, J C ^[3]

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1. Oak Ridge National Lab., TN (USA)
2. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Dept. of Health Physics
3. Stanford Linear Accelerator Center, Menlo Park, CA (USA)

The fourteenth Personnel Dosimetry Intercomparison Study (i.e., PDIS 14) was conducted during May 1-5, 1989. A total of 48 organizations (33 from the US and 15 from abroad) participated in PDIS 14. Participants submitted by mail a total of 1,302 neutron and gamma dosimeters for this mixed field study. The type of neutron dosimeter and the percentage of participants submitting that type are as follows: TLD-albedo (40%), direct interaction TLD (22%), track (20%), film (7%), combination (7%), and bubble detectors (4%). The type of gamma dosimeter and the percentage of participants submitting that type are as follows: TLD (84%) and film (16%). Radiation sources used in the six PDIS 14 exposures included {sup 252}Cf moderated by 15-cm D{sub 2}O, {sup 252}Cf moderated by 15-cm polyethylene (gamma-enhanced with {sup 137}Cs), and {sup 238}PuBe. Neutron dose equivalents ranged from 0.44--2.63 mSv and gamma doses ranged from 0. 01-1.85 mSv. One {sup 252}Cf(D{sub 2}O) exposure was performed at a 60{degree} angle of incidence (most performance tests are at perpendicular incidence). The average neutron dosimeter response for this exposure was 70% of that at normal incidence. The average gamma dosimeter response was 96% of that at normal incidence. A total of 70% of individual reported neutron dosimeter measurements were within {plus minus}50% of reference values. If the 0.01 mSv data are omitted, approximately 90% of the individual reported gamma measurements were within {plus minus}50% of reference values. 33 refs., 9 figs., 27 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6282586
• Report Number(s): ORNL-6597; ON: DE91004978
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CESIUM 137
CESIUM ISOTOPES
COMPARATIVE EVALUATIONS
DOSE EQUIVALENTS
DOSEMETERS
DOSIMETRY
EVEN-EVEN NUCLEI
GAMMA DOSIMETRY
GAMMA SOURCES
HEAVY NUCLEI
ISOTOPES
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
NEUTRON DOSIMETRY
NEUTRON SOURCES
NUCLEI
ODD-EVEN NUCLEI
PARTICLE SOURCES
PERFORMANCE TESTING
PERSONNEL DOSIMETRY
PHOTOGRAPHIC FILM DOSEMETERS
RADIATION SOURCES
RADIOISOTOPES
TESTING
THERMOLUMINESCENT DOSEMETERS
YEARS LIVING RADIOISOTOPES