The Estimation Uncertainty Measurement for Personal Dosimetry Use for Dose Audit by Analytical Method and Monte Carlo Simulation Method
Abstract
The personal dosimetry measurement is important for monitoring radiation workers or quality control. Present, Optically Simulated Luminescence (OSL), nanoDot dosimeter uses for medical dosimeter, was selected to evaluate the uncertainty for the personal dose system for quality control of Office of Atoms for Peace. The dosimeter wes irradiated at 4.35 mSv of Cs-137 and evaluated their uncertainty. The uncertainty was combined from Inhomogeneity of detector sensitivity, Variability of detector reading due to limited sensitivity and background, Variability of detector reading at zero dose, Energy and direction dependence, Non-linearity of response, Fading, dependence ambient temperature and humidity and variation in local natural background, Effects of light, Calibration error, Correction error for reading algorithm. The combination uncertainty result, the reading dose is 4.60 ± 1.42 mGy at a 95% confidence with the analysis method. This is similar to the calculation using the Monte Carlo modeling method that shows the dose is 4.44 ± 1.32 mGy at a 95% confidence level. Keywords : measurement uncertainty ; dose audit ; nanoDotReferences
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MEYE, P. O. (2016, July). INTERCOMPARISON OF PERFORMANCE CHARACTERISTICS OF OSLDs AND TLDs USED FOR INDIVIDUAL MONITORING. UNIVERSITY OF GHANA, GHANA.
Stanford Dosimetry LLC. (2010). Whole Body Dose Algorithm for the Landauer Inlight OSLN MOD2 NVLAP (p. 44).
Bell, S. (n.d.). Measurement Good Practice Guide No. 11 (Issue 2), 41.
European Federation of National Associations of. (2007). Measurement uncertainty revisited: Alternative approaches to uncertainty evaluation (No. 1/2007) (p. 62). EUROLAB Technical Secretariat - EUROLAB 1 rue Gaston Boissier 75724 PARIS Cedex 15 France: European Federation of National Associations of Measurement.
Hosseini Pooya, S., & Orouji, T. (2014). Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System. Journal of Biomedical Physics & Engineering, 4(2), 43–48.
International Commission on Radiation Protection. (2007). The 2007 Recommendations of the International Commission on Radiological Protection, 103, 37, 334.
International Electrotechnical Commission. (2012). Radiation protection instrumentation--passive integrating dosimetry systems for personal and environmental monitoring of photon and beta radiation = Instrumentation pour la radioprotection--systèmes dosimétriques intégrés passifs pour la surveillance de l’individu et de l’environnement des rayonnements photoniques et bêta. Geneva: International Electrotechnical Commission.
International Electrotechnical Commission. (2015). IEC TR 62461:2015 Radiation protection instrumentation—Determination of uncertainty in measurement (2.0).
International Electrotechnical Commission, International Electrotechnical Commission, Technical Committe 45, International Electrotechnical Commission, & Subcommittee 45B. (2015). Radiation protection instrumentation: determination of uncertainty in measurement.
International Organization for Standardization. (2017). ISO/IEC 17025:2017 - General requirements for the competence of testing and calibration laboratories. Retrieved April 2019,1 from https://www.iso.org/standard/66912.html
Izewska, J. (n.d.). Radiation Dosimeters, Radiation Oncology Physics Handbook. (pp 71-99). Vienna: International Atomic Energy Agency
Kerns, J., Kry, S., Sahoo, N., S Followill, D., & Ibbott, G. (2011). Angular dependence of the nanoDot OSL dosimeter. Medical Physics, 38, 3955–3962. https://doi.org/10.1118/1.3596533
Kocher, D. C. (2000). ASSESSMENT OF OCCUPATIONAL EXPOSURE DUE TO EXTERNAL SOURCES OF RADIATION: Health Physics, 78(5), 567–568. https://doi.org/10.1097/00004032-200005000-00019
MEYE, P. O. (2016, July). INTERCOMPARISON OF PERFORMANCE CHARACTERISTICS OF OSLDs AND TLDs USED FOR INDIVIDUAL MONITORING. UNIVERSITY OF GHANA, GHANA.
Stanford Dosimetry LLC. (2010). Whole Body Dose Algorithm for the Landauer Inlight OSLN MOD2 NVLAP (p. 44).
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2021-01-05
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