Site-specific calibration of the Hanford personnel neutron dosimeter

Conference · Sat Oct 01 04:00:00 EDT 1994

OSTI ID:10107319

Endres, A W; Brackenbush, L W; Baumgartner, W V; Rathbone, B A

A new personnel dosimetry system, employing a standard Hanford thermoluminescent dosimeter (TLD) and a combination dosimeter with both CR-39 nuclear track and TLD-albedo elements, is being implemented at Hanford. Measurements were made in workplace environments in order to verify the accuracy of the system and establish site-specific factors to account for the differences in dosimeter response between the workplace and calibration laboratory. Neutron measurements were performed using sources at Hanford`s Plutonium Finishing Plant under high-scatter conditions to calibrate the new neutron dosimeter design to site-specific neutron spectra. The dosimeter was also calibrated using bare and moderated {sup 252}Cf sources under low-scatter conditions available in the Hanford Calibration Laboratory. Dose equivalent rates in the workplace were calculated from spectrometer measurements using tissue equivalent proportional counter (TEPC) and multisphere spectrometers. The accuracy of the spectrometers was verified by measurements on neutron sources with calibrations directly traceable to the National Institute of Standards and Technology (NIST).

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10107319
• Report Number(s): PNL-SA--24010; CONF-941017--7; ON: DE95004570
• Country of Publication: United States
• Language: English

Related Subjects

440102
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CALIBRATION
CALIFORNIUM 252
DOSE EQUIVALENTS
HANFORD RESERVATION
NEUTRON DOSIMETRY
PERSONNEL DOSIMETRY
RADIATION DOSEMETERS
THERMOLUMINESCENT DOSEMETERS