Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event

Knežević, Željka; Majer, Marija; Baranowska, Zuzanna; Bjelac, Olivera Ciraj; Iurlaro, G.; Kržanović, Nikola; Mariotti, Francesca; Nodilo, Marijana; Neumaier, S.; Wołoszczuk, Katarzyna; Živanović, Miloš Z.

doi:10.1016/j.radmeas.2021.106615

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…This com par i son was per formed only with active do sim e ters but con sid er ing the pro nounced energy de pend ence of the re sponse of some types of passive do sim e ters [8,23], the con clu sions can also be ap plied to them.…”

Section: Discussionmentioning

confidence: 99%

“…Ex ten sive tests on dif ferent types of do sim e ters used by spe cial ized pro fes sional tech ni cal ser vices have shown a sim i lar sit u a tion as with ac tive do sim e ters: some do sim e ter types have prop er ties cor re spond ing with the stan dard re quire ments, while oth ers can have in fe rior metrological prop er ties. In the most ex treme case, an overresponse of more than 800 % was re corded at low en er gies for thermoluminescent dosim e ters used as am bi ent do sim e ters [8,[23][24][25].…”

Section: Se Lec Tion Of Field-class Do Sim E Tersmentioning

confidence: 98%

“…Even though sev eral In ter na tional Electrotechnical Com mis sion (IEC) stan dards give require ments for dif fer ent types of do sim e ters [4][5][6], which in prac tice limit the un cer tainty, there are many do sim eters in use that have in fe rior metrological prop er ties. In some cases, do sim e ter re sponse vari a tions can be much greater than the lim its of vari a tion de fined in the standards [7,8]. This is partly due to the fact that the type testing is a long and ex pen sive pro cess, and that com plete ex ten sive type test ing is avail able only in a very small num ber of spe cial ized fa cil i ties, e. g. Physikalisch-Technische Bundesanstalt, Ger many [9], as well as that type ap proval is not man da tory in all coun tries where radi a tion pro tec tion do sim e ters are reg u larly used (e. g. Ser bia or Bosnia and Herzegovina) or not man da tory for all end-us ers (e. g. non-gov ern men tal net works).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of calibration factors for field-class dosimeters

et al. 2022

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This paper presents a comparison performed between two calibration laboratories in several radiation qualities, using dosimeters of varying quality as transfer instruments. The goal of this work was to investigate the viability of using field-class dosimeters for official comparisons and to determine if the calibration factors for field-class dosimeters are comparable between calibration laboratories within the stated measurement uncertainties. The results of the comparison were acceptable for high-quality electronic personal dosimeters in all radiation qualities, and such dosimeters could be used as transfer instruments. On the other hand, comparison results for low-quality dosimeters were often not acceptable, either due to pronounced energy dependence, low stability, or both. Such instruments are unreliable even under well-defined laboratory conditions, and their use in routine measurements may cause doubt in official data or influence public opinion. This problem is often hidden because many dosimeters are calibrated or verified only in 137Cs beams, where the deviations are the smallest. The largest differences are found for low-energy X-ray radiation qualities, where many dosimeters have significant overresponse.

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Section: Discussionmentioning

confidence: 99%

Section: Se Lec Tion Of Field-class Do Sim E Tersmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Comparison of calibration factors for field-class dosimeters

et al. 2022

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“…Multiple types of passive radiation protection systems based on diferent ionizing radiation detection mechanisms were subjected to extensive performance testing due to the need for passive radiation protection harmonization and the requirements of international standards in the context of environmental monitoring in radiation protection. In this research article [30], the reaction of 12 distinct passive dosimetry systems from 9 institutions was evaluated as a function of the dose, energy, angle of photon incidence, and response to a natural radiation feld (gamma radiation of a sealed Ra-226 source) as part of the preparedness project. OSL and RPL-based systems outperform all other passive dosimetry systems tested in this study in every test.…”

Section: Mobile Information Systemsmentioning

confidence: 99%

IoT-Enabled Intelligent System for the Radiation Monitoring and Warning Approach

Saifullah

Bajwa

Ibrahim

et al. 2022

Mobile Information Systems

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Radiations are especially harmful to children and infants as their body cells divide rapidly, thus providing radiations more chances to interfere with the organs, leading to a number of diseases, especially those related to the skin. Therefore, the demand for a system that can detect harmful radiations timely and effectively becomes high. Many new and modern techniques comprising radiation protection and alerting systems are being introduced along with improvements and enhancements. This study demonstrates the practical implementation of an IoT-enabled intelligent system based on machine learning for radiation monitoring and warning by classifying radiations and their corresponding effects on infants. The proposed system alerts humans about the danger zones with audio/visual announcements or a buzz so that they can move to a safer place. Along with this automatic sensor system, a real-time dataset is also collected, in which sensor values are recorded along with their effects on infants for experiments. Additionally, the outcomes of the effect of radiations corresponding to the recorded sensor values are classified by using support vector machines, Gaussian naïve Bayes, decision trees, extra trees, bagging classifiers, random forests, logistic regression, and adaptive boosting classifiers. The experiment reveals that the adaptive boosting classifier gives the best accuracy of 81.77% compared to other classifiers.

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“…Dosimeters are routinely calibrated in well-defined reference radiation fields produced according to relevant ISO standards (ISO 2019a and b) under laboratory conditions, but their accuracy can significantly differ when they are used in real radiation monitoring conditions in routine dosimetry monitoring practices (Ankerhold et al 2009; EC 2009; Krzanovic et al 2017; Knezevic et al 2021). Thus, characterization (i.e., type tests) of passive dosimetry systems following procedures and criteria set by internationally recognized standards is necessary.…”

Section: Introductionmentioning

confidence: 99%

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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Investigations into the basic properties of different passive dosimetry systems used in environmental radiation monitoring in the aftermath of a nuclear or radiological event

Cited by 9 publications

References 5 publications

Comparison of calibration factors for field-class dosimeters

Comparison of calibration factors for field-class dosimeters

IoT-Enabled Intelligent System for the Radiation Monitoring and Warning Approach

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

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