Type Testing of Model 7200 Automatic TLD Reader

Mohammadi, Mohammad; Pooya, S.M. Hosseini

doi:10.1093/rpd/ncw100

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…D2 had less pronounced overresponse during the non-linearity test compared to the findings for D1. Considering the dose range from 0.3 mSv up to 1 Sv, results are mostly in line with results presented by Mohammadi and Pooya (2017). It should be noted that a detailed comparison with this study cannot be made as information regarding the holder used in this study is not given.…”

Section: Resultssupporting

confidence: 88%

“…In another study, a dosimetry system comprised of the Model 7200 Automatic TLD Reader (RSD Co., Tehran, Iran) and the TLD-100 (LiF:Mg,Ti) dosimeters (Thermo Fisher Scientific) was examined for non-linearity of the response, overload, post-irradiation effects, and reusability (radiation characteristics); reader stability and power supply (electromagnetic characteristics); and light exposure and ambient temperature (environmental characteristics) (Mohammadi and Pooya 2017). Similar research of TL dosimetry systems’ properties included type testing of LiF based TLD (Radcard, Kraków, Poland) read on a RADOS RE2000 reader (Mirion Technology, Inc., Atlanta, GA) and Manual Reader-Analyzer TL RA’94 (MICROLAB, Warsaw, Poland) (Obryk et al 2008, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard

et al. 2023

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A need for detailed testing of individual monitoring systems used in accredited service at the Vinca Institute of Nuclear Sciences was recognized following changes in individual, workplace, and environmental monitoring passive dosimetry systems acceptability criteria stated in IEC 62387:2020 and changes related to reference fields used in radiation protection defined in ISO 4037:2019. Reliability and accuracy of dosimetry data acquired by passive dosimetry systems used for individual monitoring is assured by carrying out type tests. In this manner, the effects of different radiation influence quantities are examined. Passive dosimetry systems comprised of an LiF:Mg,Ti (TLD-100) detector card placed in two different holder models (8814 and 8850) and the Harshaw TLD Model 6600 Plus Automated Reader were tested. Type tests were done in an extended range of photon energies from 40 keV up to 1.25 MeV, angle of incidence values of ±45° and ± 60° for both vertical and horizontal dosimeter orientation, and in the dose range from 0.05 mSv to 1 Sv. Both dosimetry system configurations perform in line with IEC 62387:2020 within mandatory range for tested influence quantities. Dosimeters that use the 8850 holder type showed less pronounced energy and angular dependence of the response in the low-energy range.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard

et al. 2023

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“…The IEC 61066 [2] standard and its substituted version of IEC 82387 [3] have already been employed for the aim of type-testing on various models of TLD readers [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Study on type-testing of a manual TLD-reader for dosimetry programs

Pooya

Rezaeian

Edalatkhah

2022

Jonra

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In a radiation individual monitoring program, the type testing of measuring devices is a great important part of the quality management system. The IEC-62387 standard applies to dosimetry systems that measure external photon and/or beta radiation within limited ranges of the associated physical parameters. In this work, a type-testing program was conducted for a manual thermoluminescence dosimetry (TLD) reader employing the IEC-62387 radiation and environmental performance criteria. The uncertainty of non-linearity of the response of the dosimetry system in a range of 0.7-850 mSv was obtained between -15% and + 17%, which fulfilled the IEC standard range of -16% to +18%. Furthermore, the total uncertainty of all reader tests was measured to be 12%, which was less than the criteria of 20% in the IEC standard. Thus, it can be concluded that the TLD reader met all requirements of the IEC standard for the reader-tests by an appropriate margin.

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Type Testing of Model 7200 Automatic TLD Reader

Cited by 2 publications

References 6 publications

Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard

Characterization of Thermoluminescent Dosimetry Systems According to the IEC 62387:2020 Standard

Study on type-testing of a manual TLD-reader for dosimetry programs

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