Application of workplace correction factors to dosemeter results for the assessment of personal doses at nuclear facilities

Abstract

Ratios of H p (10) and H*(10) were determined with reference instruments in a number of workplace fields within the nuclear industry and used to derive workplace-specific correction factors. When commercial survey meter results together with these factors were applied to the results of the locally used personal dosemeters their results improved and became within 0.7 and 1.7 of the reference values or better depending on the response of the survey meter. A similar result was obtained when a correction was determined with a prototype reference instrument for H p (10) after adjustment of its response. Commercially available survey instruments both for photon and neutron H*(10) measurements agreed with the reference instruments in most cases to within 0.5-1.5. Those conclusions are derived from results reported within the EC supported EVIDOS contract.

Neutron spectrometry with Bonner Spheres for area monitoring in particle accelerators

“…(1) For evaluating the suitability of a given instrument, or its response as a function of the energy, for a specific workplace and to determine workplace-specific correction factors (20) . (2) For identifying relevant points of the installation where the neutron field can be fully characterised through spectrometry and/or calculation, and that can be employed as simulated workplace neutron fields (21,22) for the calibration of survey instruments and dosemeters to be used in the installation.…”