Improving the Assessment of Occupational Exposure to Radon in Above-Ground Workplaces

Turtiainen, Tuukka; Kojo, Katja; Laine, Jussi-Pekka; Holmgren, Olli; Kurttio, Päivi

doi:10.1093/rpd/ncab127

Cited by 7 publications

(9 citation statements)

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“…Very close response times were observed at decreasing activity concentration. These values are in agreement with the values reported by [5], who observed that an hour after injection of radon activity, the RadonEye recorded (79 ± 3)% of the true radon concentration and after two hours (96 ± 4) %. The results show that RadonEye monitors could be successfully used for monitoring of the diurnal radon variations even in workplaces with part-time operation.…”

Section: Monitorsupporting

confidence: 93%

“…This tendency for non-linearity was observed for all studied RadonEyes with respect to both the AlphaGUARD and the RAD7. Non-linearity in the signal of RadonEye Plus2 monitors has already been noted by [5]. A possible reason for the non-linearity is deadtime in the signal processing of the RadonEye monitors, although no data on it is provided by the producer.…”

Section: Linearity and Reproducibility Of The Radoneyesmentioning

confidence: 99%

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Study of the performance and time response of the RadonEye Plus2 continuous radon monitor

et al. 2023

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Section: Monitorsupporting

confidence: 93%

Section: Linearity and Reproducibility Of The Radoneyesmentioning

confidence: 99%

Study of the performance and time response of the RadonEye Plus2 continuous radon monitor

et al. 2023

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“…Ventilation correction factor. The value of the ventilation correction factor according to eqn (1) was determined from the gross data of the RadonEye instrument read and processed at STUK (Turtiainen et al 2021). The number of data sets was 334.…”

Section: Estimation Of Radon Concentrations and Analysis Of The Datamentioning

confidence: 99%

“…Based on the previously reported results of this study, the best precision and accuracy in estimating the annual mean radon concentration during working hours is achieved when both integrated and continuous measurements are used (Turtiainen et al 2021). This method was applied here to estimate the occupational radon concentrations to which workers throughout Finland are exposed.…”

Section: Strengths and Weaknesses Of The Studymentioning

confidence: 99%

Radon Exposure Concentrations in Finnish Workplaces

et al. 2023

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The aim of this study was to obtain information on the radon concentrations to which Finnish workers are exposed. Radon measurements were conducted as integrated measurements in 700 workplaces, supplemented by continuous radon measurements in 334 workplaces. The occupational radon concentration was calculated by multiplying the result of the integrated measurements by the seasonal correction factor and the ventilation correction factor (ratio between the working time and the full-time radon concentration obtained from continuous measurement). The annual radon concentration to which workers are exposed was weighted by the actual number of workers in each province. In addition, workers were divided into three main occupational categories (working mainly outdoors, underground, or indoors above ground). Probability distribution of the parameters affecting radon concentration levels were generated to calculate a probabilistic estimate of the number of workers exposed to excessive radon levels. With deterministic methods, the geometric and arithmetic mean radon concentrations in conventional, above-ground workplaces were 41 and 91 Bq m−3, respectively. The estimated geometric and arithmetic mean annual radon concentrations that Finnish workers are exposed to were assessed as 19 and 33 Bq m−3, respectively. The generic ventilation correction factor for workplaces was calculated as 0.87. Assessed with probabilistic methods, there are approximately 34,000 workers in Finland whose exposure to radon exceeds the reference level of 300 Bq m−3. Although radon concentrations are generally low in Finnish workplaces, many workers are exposed to high levels of radon. Radon exposure in the workplace is the most common source of occupational radiation exposure in Finland.

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“…During these tests, the RadonEye +2 (RE) electronic radon detectors (2) demonstrated excellent sensitivity to 222 Rn and quick temporal response, which outlined them as good candidates to be tried out in campaigns for continuous 222 Rn monitoring. This type of detector has been preferred also for improving the assessment of indoor exposure to radon in workplaces (3).…”

mentioning

confidence: 99%

Recent work with electronic radon detectors for continuous Radon-222 monitoring

Mitev¹,

Georgiev²,

Dimitrova³

et al. 2022

radon

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Background: Sensitive electronic radon detectors can be an advantageous solution for continuous monitoring of radon dynamics in dwellings and workplaces. In order to investigate their applicability, such detectors must be subjected to adequate metrological assurance, and their performance in field conditions must be tested and evaluated. Objectives: To perform laboratory and field tests in order to evaluate the applicability of RadonEye+2 instruments for continuous radon monitoring. Results: In this work, we have performed laboratory tests of 36 RadonEye+2 detectors, which appear to have linear response for 222Rn concentrations below 3.5 kBq/m3 and a non-linear response (<15%) in the interval from 3.5 to 7 kBq/m3. Their response to 222Rn at 4.7 kBq/m3 is within 15% to the reference. In experiments with sharp variation of the 222Rn concentration, the detectors show fast response within 2 h. For the application of the detectors in dwellings and workplaces, we have developed a database, which collects, stores and visualises the RadonEye data. The database proved to be very useful tool, not only for data analysis but also for the identification of interruptions in the detectors operation and/or their connection to the internet. In a pilot 10-month-long study with three detectors located in different dwellings, we have observed more than 91% uptime of the online data collection from the detectors and more than 96% uptime of the data recording in the internal memory of the instruments. Conclusions: Overall, the results show that the RadonEye+2 instruments are very suitable for continuous radon monitoring and may be useful for follow-up of radon dynamics in long-term measurement campaigns in homes and workplaces.

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Improving the Assessment of Occupational Exposure to Radon in Above-Ground Workplaces

Cited by 7 publications

References 0 publications

Study of the performance and time response of the RadonEye Plus2 continuous radon monitor

Study of the performance and time response of the RadonEye Plus2 continuous radon monitor

Radon Exposure Concentrations in Finnish Workplaces

Recent work with electronic radon detectors for continuous Radon-222 monitoring

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