Diurnal variation of radon progeny

Seftelis, I.; Nicolaou, G.; Trassanidis, S.; Tsagas, F.N.

doi:10.1016/j.jenvrad.2007.03.007

Cited by 24 publications

(12 citation statements)

References 9 publications

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“…From correlations of 222 Rn flux and terrestrial gamma dose rate measured at field sites in Switzerland, Germany, Scotland, Finland and Hungary, Szegvary et al (2007) predict, for these levels, that the Rn flux should be around 150e250 B m À2 h À1 . Seftelis et al (2007) have monitored gross alpha (a) radioactivity in the air near the ground and the gamma (g) radioactivity emitted from the ground in Xanthi. They report that a-radioactivity reaches a peak in the morning, followed by a decrease, rising to a second peak in the afternoon, and the variation of the ground g-radioactivity follows that of the air a-radioactivity.…”

Section: Spatial Variability Of Outdoor Natural Radioactivity Levels mentioning

confidence: 99%

Radon and radioactivity at a town overlying Uranium ores in northern Greece

Kourtidis

Georgoulias

Vlahopoulou

et al. 2015

Journal of Environmental Radioactivity

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Section: Spatial Variability Of Outdoor Natural Radioactivity Levels mentioning

confidence: 99%

Radon and radioactivity at a town overlying Uranium ores in northern Greece

Kourtidis

Georgoulias

Vlahopoulou

et al. 2015

Journal of Environmental Radioactivity

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“…Jackson et al 1981;Robé et al 1992;Seftelis et al 2007), seasonal variation (e.g. Magalhães et al 2002;Schmidt and Regner 2005;Ruano-Ravina et al 2008;Zhuo et al 2008) or possible storm variation due to barometric pressure and/or moisture effects (e.g.…”

Section: Exhalation Behaviourmentioning

confidence: 99%

Radon sources and impacts: a review of mining and non-mining issues

Mudd

2008

Rev Environ Sci Biotechnol

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Radon is a ubiquitous natural carcinogen derived from the three primordial radionuclides of the uranium series ( 238 U and 235 U) and thorium series ( 232 Th). In general, it is present at very low concentrations in the outdoor or indoor environment, but a number of scenarios can give rise to significant radiological exposures. Historically, these scenarios were not recognised, and took many centuries to understand the links between the complex behaviour of radon and progeny decay and health risks such as lung cancer. However, in concert with the rapid evolution in the related sciences of nuclear physics and radiological health in the first half of the twentieth century, a more comprehensive understanding of the links between radon, its progeny and health impacts such as lung cancer has evolved. It is clear from uranium miner studies that acute occupational exposures lead to significant increases in cancer risk, but chronic or sub-chronic exposures, such as indoor residential settings, while suggestive of health risks, still entails various uncertainties. At present, prominent groups such as the BEIR or UNSCEAR committees argue that the 'linear no threshold' (LNT) model is the most appropriate model for radiation exposure management, based on their detailed review and analysis of uranium miner, residential, cellular or molecular studies. The LNT model implies that any additional or excess exposure to radon and progeny increases overall risks such as lung cancer. A variety of engineering approaches are available to address radon exposure problems. Where high radon scenarios are encountered, such as uranium mining, the most cost effective approach is well-engineered ventilation systems. For residential radon problems, various options can be assessed, including building design and passive or active ventilation systems. This paper presents a very broad but thorough review of radon sources, its behaviour (especially the importance of its radioactive decay progeny), common mining and non-mining scenarios which can give rise to significant radon and progeny exposures, followed by a review of associated health impacts, culminating in typical engineering approaches to reduce exposures and rehabilitate wastes.

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“…The measurement range of the sensor is 20-90% RH and 0-50 ºC, while the humidity accuracy is ±5% RH and the temperature accuracy is ±2 ºC. These sensors were added to anticipate the change in radiation measurement due to diurnal effect [17]. Relative humidity indicates the percentage of actual amount of water vapour in the air.…”

Section: Functional Testmentioning

confidence: 99%

Development of Mobile Device for Gamma Radiation Measurement Utilizing Lora as the Communication Means

et al. 2019

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Public protection is one of important issues when operating nuclear facility. In case of accident occurs, the facility owner and related organizations shall make decision whether to evacuate people or not, based on the level of the accident and radiation dose rate released to the environment. In this study, as part of the decision support system for nuclear emergency response, a prototype of mobile radiation measurement system has been developed. The device consists of Geiger-Muller (GM)-based radiation measurement board, Global Positioning System (GPS) module, microcontroller board, and low power LoRa module for communication. Radiation dose rate along with its geoposition were recorded and sent to base station equipped with LoRa gateway for connecting LoRa network to TCP/IP-based network. The measurement data is then published to storage server using Message Queuing Telemetry Transport (MQTT) protocol. Power consumption, measurement of counter/timer accuracy, communication ranges testing, and radiation dose rate measurement were performed around Puspiptek area to demonstrate the functionality of the system.

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Diurnal variation of radon progeny

Cited by 24 publications

References 9 publications

Radon and radioactivity at a town overlying Uranium ores in northern Greece

Radon and radioactivity at a town overlying Uranium ores in northern Greece

Radon sources and impacts: a review of mining and non-mining issues

Development of Mobile Device for Gamma Radiation Measurement Utilizing Lora as the Communication Means

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