skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Analysis of measurements with personnel dosimeters and portable instruments for determining neutron dose equivalent at nuclear power plants

Abstract

Published data from measurements made by Pacific Northwest Laboratory (PNL) and those made jointly by the Environmental Measurements Laboratory (EML) and by Rensselaer Polytechnic Institute (RPI) inside containment at nuclear power plants have been examined to determine the best method for estimating the neutron dose equivalent received by workers. These data included measurements with TLD albedo dosimeters, 9-inch spherical remmeters, Andersson-Braun remmeters, multisphere sets, Cutie Pie gamma survey meters, /sup 3/He spectrometers, and tissue equivalent proportional counters. We found that no single technique was clearly most accurate for determining neutron dose equivalent. We recommend the continued use of TLD albedo dosimeters calibrated with a moderated /sup 252/Cf source and corrected for variations in neutron spectrum. These corrections can be determined from measured quantities such as the ratio of responses of 9-inch and 3-inch spheres. We also recommend the continued use of remmeters calibrated with bare or moderated Cf neutron sources and corrected for variations in neutron spectrum determined in the same way as for TLD albedo dosimeters. We suggest measurements be made at least once at each nuclear power plant with a full set of moderating spheres in order to determine neutron spectra. Since the data do not show goodmore » correlation between neutron dose equivalent rates and gamma exposure rates, we do not recommend using measured gamma exposure rates to infer neutron dose equivalent rates. While the /sup 3/He spectrometer and the tissue equivalent proportional counter seem to be intrinsically capable of measuring neutron dose equivalent, neither of these instruments is as yet available in a commercial package convenient for use by plant personnel; hence, until these instruments are further developed we do not recommend them for routine estimation of neutron dose equivalent rates. 16 references, 17 figures, 19 tables.« less

Authors:
;
Publication Date:
Research Org.:
National Bureau of Standards, Washington, DC (USA)
OSTI Identifier:
5725149
Report Number(s):
NUREG/CR-3400
ON: DE83902788
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; NEUTRON DOSIMETRY; COMPARATIVE EVALUATIONS; NUCLEAR POWER PLANTS; PERSONNEL DOSIMETRY; CALIBRATION; DATA COMPILATION; DOSE EQUIVALENTS; DOSEMETERS; PROPORTIONAL COUNTERS; RECOMMENDATIONS; THERMOLUMINESCENT DOSEMETERS; DATA; DOSIMETRY; INFORMATION; LUMINESCENT DOSEMETERS; MEASURING INSTRUMENTS; NUCLEAR FACILITIES; NUMERICAL DATA; POWER PLANTS; RADIATION DETECTORS; THERMAL POWER PLANTS; 655003* - Medical Physics- Dosimetry

Citation Formats

Eisenhauer, C M, and Schwartz, R B. Analysis of measurements with personnel dosimeters and portable instruments for determining neutron dose equivalent at nuclear power plants. United States: N. p., 1983. Web.
Eisenhauer, C M, & Schwartz, R B. Analysis of measurements with personnel dosimeters and portable instruments for determining neutron dose equivalent at nuclear power plants. United States.
Eisenhauer, C M, and Schwartz, R B. 1983. "Analysis of measurements with personnel dosimeters and portable instruments for determining neutron dose equivalent at nuclear power plants". United States.
@article{osti_5725149,
title = {Analysis of measurements with personnel dosimeters and portable instruments for determining neutron dose equivalent at nuclear power plants},
author = {Eisenhauer, C M and Schwartz, R B},
abstractNote = {Published data from measurements made by Pacific Northwest Laboratory (PNL) and those made jointly by the Environmental Measurements Laboratory (EML) and by Rensselaer Polytechnic Institute (RPI) inside containment at nuclear power plants have been examined to determine the best method for estimating the neutron dose equivalent received by workers. These data included measurements with TLD albedo dosimeters, 9-inch spherical remmeters, Andersson-Braun remmeters, multisphere sets, Cutie Pie gamma survey meters, /sup 3/He spectrometers, and tissue equivalent proportional counters. We found that no single technique was clearly most accurate for determining neutron dose equivalent. We recommend the continued use of TLD albedo dosimeters calibrated with a moderated /sup 252/Cf source and corrected for variations in neutron spectrum. These corrections can be determined from measured quantities such as the ratio of responses of 9-inch and 3-inch spheres. We also recommend the continued use of remmeters calibrated with bare or moderated Cf neutron sources and corrected for variations in neutron spectrum determined in the same way as for TLD albedo dosimeters. We suggest measurements be made at least once at each nuclear power plant with a full set of moderating spheres in order to determine neutron spectra. Since the data do not show good correlation between neutron dose equivalent rates and gamma exposure rates, we do not recommend using measured gamma exposure rates to infer neutron dose equivalent rates. While the /sup 3/He spectrometer and the tissue equivalent proportional counter seem to be intrinsically capable of measuring neutron dose equivalent, neither of these instruments is as yet available in a commercial package convenient for use by plant personnel; hence, until these instruments are further developed we do not recommend them for routine estimation of neutron dose equivalent rates. 16 references, 17 figures, 19 tables.},
doi = {},
url = {https://www.osti.gov/biblio/5725149}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {8}
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share: