Annual effective dose of naturally occurring radionuclides in soil and sediment

Aközcan, Serpil

doi:10.1080/02772248.2014.939177

Cited by 32 publications

(12 citation statements)

References 18 publications

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“…Exposure levels and the hazard indices for the monitoring points are calculated by using the following equations [46][47][48][49]. We converted the units to suit the literature:…”

Section: Radiological Parameters Calculationmentioning

confidence: 99%

A mobile simulation and ARIMA modeling for prediction of air radiation dose rates

Salh

Külahçı

Aközcan

2021

J Radioanal Nucl Chem

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A spatial simulation method in .mp4 format was proposed to determine Fukushima radioactive fallout transport and the Absorbed Dose Rate, Annual Effective Dose Equivalent, and Excess Lifetime Cancer Risk were determined for 10 months after the accident (March 11 2011). The findings of this study demonstrate that an appropriate ARIMA model can be applied for radiation dose time-series in the case of nuclear reactor accidents like Chernobyl and Fukushima to predict the future air dose rates, which can provide valuable information in determining the evacuation zones, decontamination processes, and radiation protection progresses. The model forecasted results and the actual observation data in the same period shows a gradual decrease in the air dose rates during the prediction period. Moreover, there is a good agreement between them as the prediction and observation scatter plot follows each other with small variations. These results provide important insights into the predictability of ARIMA models; thus, the models were utilized to forecast the air dose rates for the period (January 2020 -October 2020).

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“…Exposure levels and the hazard indices for the monitoring points are calculated by using the following equations [46][47][48][49]. We converted the units to suit the literature:…”

Section: Radiological Parameters Calculationmentioning

confidence: 99%

A mobile simulation and ARIMA modeling for prediction of air radiation dose rates

Salh

Külahçı

Aközcan

2021

J Radioanal Nucl Chem

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“…Gamma rays are derived from radionuclides belonging to 238 U and 232 Th series and 40 K (basic radioactive elements of granites) that are present in the earth's crust (UNSCEAR, 2017). These radionuclides origins emerge from the primordial radionuclides ( 238 U, 232 Th) that have considerable long half-lives (Akkurt, 2009;Uyanık, Uyanık, & Akkurt, 2013;Aközcan, 2014;Akkurt, Uyanik, & Günoğlu, 2015;Kara, Kara, & Akkurt, 2016;Çetin, Öner, & Akkurt, 2016;Demir, Kıvrak, Üstün, Cesur, & Boztosun, 2017;Kara, Yildiz, & Akkurt, 2017;Seçkiner, Akkurt, & Günoglu, 2017;Günay, 2018;Günay, Saç, Içhedef, & Taşköprü, 2018a, 2018b. The radioactivity of granitic rock is differing according to their radioactive element contents.…”

Section: Granites and Radiation Hazardmentioning

confidence: 99%

Radiation map for King Abdulaziz University campus and surrounding areas

Aboud

Alqahtani

Aboelnaga

2019

Journal of Radiation Research and Applied Sciences

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King Abdulaziz University (KAU) buildings are expanded to accept more students and research centers. Many of the new buildings were constructed using granitic rocks as building materials. Granitic rock contains radioactive elements (U, Th, K). These elements by time emit radiation which could affect human health. Surely, radiation dose depends on radioactive element percentage in the rock, open or closed area, radiation period,. .. .. .. .etc. When radiation occurs, gamma rays (or radon gas produced by the decay of U and Th) are detected everywhere causing damage in human body cells when being high. For the above-mentioned reasons, Geohazards Research Center, KAU surveyed the whole university campus and surrounding areas using gamma ray spectrometer in order to map the radioactive elements and estimate the dose rate. Results indicate that most of all university buildings have low dose rate while the new buildings have little high dose rate (3.46 mSv/y). These high values are due to the new granitic building materials covering the walls, floors, columns, ponds of agriculture. As the university staff are not staying their lives within the university, fewer hazards occur, but more safety recommendations should be taken into consideration.

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“…Uranium ore deposits in Egypt are found in several areas, including El-Missikate and El-Erediya (in the Central Eastern Desert of Egypt), Gable Gattar (in the North Eastern Desert of Egypt), Abu Rusheid, El Seila and Um Ara (in the South Eastern Desert of Egypt), and Abu Zeneima (South of Sinai) [13,14]. While numerous studies around the world, including in Egypt, have concerned determination of radiation levels in various trenches or ores as indicators of mineral deposits [15][16][17][18][19][20][21][22][23], no such investigation has been found for the trenches of the El Seila area of Egypt.…”

Section: Introductionmentioning

confidence: 99%

The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure

et al. 2021

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Uranium, perhaps the most strategically important component of heavy minerals, finds particular significance in the nuclear industry. In prospecting trenches, the radioactivity of 238U and 232Th provides a good signature of the presence of heavy minerals. In the work herein, the activity concentrations of several key primordial radionuclides (238U, 232Th, and 40K) were measured in prospecting trenches (each of the latter being of approximately the same geometry and physical situation). All of these are located in the Seila area of the South Eastern desert of Egypt. A recently introduced industry standard, the portable hand-held RS-230 BGO gamma-ray spectrometer (1024 channels) was employed in the study. Based on the measured data, the trenches were classified as either non-regulated (U activity less than 1000 Bq kg-1) or regulated (with 238U activity more than 1000 Bq kg-1). Several radiological hazard parameters were calculated, statistical analysis also being performed to examine correlations between the origins of the radionuclides and their influence on the calculated values. While the radioactivity and hazard parameters exceed United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) guided limits, the mean annual effective doses of 0.49 and 1.4 mSv y-1 in non-regulated and regulated trenches respectively remain well below the International Commission on Radiological Protection (ICRP) recommended 20 mSv/y maximum occupational limit. This investigation reveals that the studied area contains high uranium content, suitable for extraction of U-minerals for use in the nuclear fuel cycle.

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Annual effective dose of naturally occurring radionuclides in soil and sediment

Cited by 32 publications

References 18 publications

A mobile simulation and ARIMA modeling for prediction of air radiation dose rates

A mobile simulation and ARIMA modeling for prediction of air radiation dose rates

Radiation map for King Abdulaziz University campus and surrounding areas

The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure

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