Response of the Hanford Combination Neutron Dosimeter in plutonium environments

Technical Report · Thu Feb 01 04:00:00 EST 1996

DOI:https://doi.org/10.2172/211349· OSTI ID:211349

Endres, A W; Brackenbush, L W; Baumgartner, W V ^[1]

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1. and others

This report documents response characteristics and the development of dose algorithms for the Hanford Combination Neutron Dosimeter (HCNO) implemented on January 1, 1995. The HCND was accredited under the U.S. Department of Energy (DOE) Laboratory Accreditation Program (DOELAP) during 1994. The HCND employs two neutron dose components consisting of (1) an albedo thermoluminescent dosimeter (TLD), and (2) a track-etch dosimeter (TED). Response characteristics of these two dosimeter components were measured under the low-scatter conditions of the Hanford 318 Building Calibration Laboratory, and under the high-scatter conditions in the workplace at the Plutonium Finishing Plant (PFP). The majority of personnel neutron dose at Hanford (currently and historically) occurs at the PFP. National Institute of Standards and Technology (NIST) traceable sources were used to characterize dosimeter response in the laboratory. At the PFP, neutron spectra and dose-measuring instruments, including a multisphere spectrometer, tissue equivalent proportional counters, and specially calibrated rem meters, were used to determine the neutron dose under several configurations from three different plutonium sources: (1) plutonium tetrafluoride, (2) plutonium metal, and (3) plutonium oxide. In addition, measurements were performed at many selected work locations. The HCNDs were included in all measurements. Comparison of dosimeter- and instrument-measured dose equivalents provided the data necessary to develop HCND dose algorithms and to assess the accuracy of estimated neutron dose under actual work conditions.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 211349
• Report Number(s): PNNL--10516; ON: DE96008344
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
ACCURACY
ALBEDO-NEUTRON DOSEMETERS
ALGORITHMS
DOSE EQUIVALENTS
DOSEMETERS
HANFORD RESERVATION
NEUTRON DOSIMETRY
NEUTRON SPECTRA
OCCUPATIONAL EXPOSURE
PERFORMANCE
PERSONNEL
PLUTONIUM
PLUTONIUM FLUORIDES
PLUTONIUM OXIDES
PROPORTIONAL COUNTERS
RADIATION MONITORING