Population Irradiation Dose Assessment for 14C Emissions from NPP with RBMK-1000 and EGP-2 Reactors

Крышев, А. И.; Kryshev, I.I.; Vasyanovich, M. E.; Екидин, А. А.; Kapustin, Ivan A.; Murashova, Ekaterina

doi:10.1007/s10512-020-00650-2

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…They are presented in Table 3. For comparison, Table 3 presents the data obtained by other scientists [48][49][50] at the same control posts. According to the monitoring data for 2016-2020, the following states with a volume of 137 Cs emissions were established.…”

Section: Results Of Experimental Research and Discussionmentioning

confidence: 99%

Features of Monitoring the Radioactive Situation in the Surface Air Layer and Precipitation near a Nuclear Power Plant

Isupova

Завалин

Alferov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The influence of nuclear power plants on the population and agricultural fields located within a radius of 150 km from the nuclear power plant is considered. The features of monitoring the radioactive situation in the surface layer of the air have been studied. The volumetric activity of 137Cs near the nuclear power plant has been estimated. A sufficiently accurate way of placing monitoring installations has been determined (taking into account the direction of the winds, the distance to the nuclear power plant, and nearby settlements). It has been established that some radionuclides, which are currently poorly controlled, require additional measurements. A variant of replacing cuvettes with sides with universal collection tanks is proposed to provide more precise control. The placement of monitoring installations fully complies with the IAEA recommendations.

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Section: Results Of Experimental Research and Discussionmentioning

confidence: 99%

Features of Monitoring the Radioactive Situation in the Surface Air Layer and Precipitation near a Nuclear Power Plant

Isupova

Завалин

Alferov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Since ingestion is the primary mode of expose, and the share of consumption of local products does not always exceed the share of imported, it is reasonable to assume that there may not be an equilibrium of 14 C. In this case, the expected annual dose of 14 C exposure can be calculated using the formula (Kryshev et al 2020): where ε ing = 6.5·10 −12 Sv/Bq – dose conversion factor for an adult when inhaling 14 C in the form of CO 2 (ICRP 2012);…”

Section: Methodsmentioning

confidence: 99%

“…The IAEA approach for estimating annual effective doses from 14 C releases assumes that all the food consists only of local products and, as a result, there is an equilibrium in the 14 С concentration in food, human tissue, and atmospheric air. Then the estimate of the expected annual dose of internal exposure D (Sv/a) from 14 С contained in the atmospheric air in the form of carbon dioxide 14 СО 2 can be obtained by the following formula (IAEA 2001): Since ingestion is the primary mode of expose, and the share of consumption of local products does not always exceed the share of imported, it is reasonable to assume that there may not be an equilibrium of 14 C. In this case, the expected annual dose of 14 C exposure can be calculated using the formula (Kryshev et al 2020):…”

Section: Methodsmentioning

confidence: 99%

¹⁴C IN TREE RINGS IN THE VICINITY OF THE RBMK REACTOR NUCLEAR POWER PLANT

Nazarov,

Kruzhalov,

Vasyanovich

et al. 2023

Radiocarbon

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The paper presents the results of radiocarbon (14C) concentration measurements in tree rings in the vicinity of Kursk NPP (Russia) with four operating RBMK reactors. The sampling was carried out from the site with the highest expected accumulation of radiocarbon in vegetation. The site was determined with long-term meteorological data. The measurements of 14C concentration carried out with accelerator-mass spectrometer in Budker Institute of Nuclear Physics, Novosibirsk, Russia. The obtained results demonstrated the influence of exploitation of Kursk NPP to the concentration of 14C in tree rings. Based on the equilibrium between the 14C ratio in the tree rings and the surrounding air, retrospective estimates of the radiocarbon discharge and effective doses were made. Effective doses were calculated with two approaches: IAEA methodology and less conservative approach, considering the real food consumption in the Kursk region. The values of calculated doses by the second method (0.08–2.58 μSv) are more than 2 times less than IAEA approach (0.17–5.30 μSv). The highest difference between measured and background 14C in tree ring is 41.7 ± 5.8 pMC in 2014 during the restoration of graphite stack. The main contribution to 14С exposure in the considering period is caused by background – from 70 to 99%.

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“…The radionuclides which need to detected in order to ensure the safety of the population include a number of difficult-to-detect beta-emitting radionuclides ( 3 H, 14 C, 90 Sr), the measurement of which requires sophisticated methods for detecting and preparing samples. These cannot be realized in the field [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Radiological Assessment of the Belarusian Nuclear Power Plant Site in the Pre-Operational Period

Nazarov

Екидин

Vasiljev

et al. 2020

RAD Conference Proceedings

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Field studies on the pre-operational period of a Belarusian NPP have allowed us to determine the "background" level of gamma-emitting radionuclides in individual components of the environment. The results of measuring the dose rate at the NPP construction site are from 0.048 to 0.089 μSv/h. External radiation in the surveyed area is at 96% due to 40 K, 226 Ra and 232 Th. The radionuclides in the surface soil layer are: 40 K -from 530 to 700 Bq/kg; 226 Ra -from 30 to 55 Bq/kg; and 232 Th -from 17 to 35 Bq/kg; 137 Cs from 2 to 13 Bq/kg. The dose rate in the floodplain of the Viliya River from 0.033 to 0.082 μSv/h. The activity concentrations of the radionuclides in the surface soil layer of the floodplain of the Viliya River are: 40 K -from 390 to 690 Bq/kg; 226 Ra -from 33 to 50 Bq/kg; 232 Th -from 15 to 50 Bq/kg; 137 Cs -from 3 to 12 Bq/kg. The activity concentration of carbon-14 and tritium in the dominant vegetation species were determined to be: from 74.4 to 111.5 pMC and less than lower range limit, respectively.

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Population Irradiation Dose Assessment for 14C Emissions from NPP with RBMK-1000 and EGP-2 Reactors

Cited by 9 publications

References 5 publications

Features of Monitoring the Radioactive Situation in the Surface Air Layer and Precipitation near a Nuclear Power Plant

Features of Monitoring the Radioactive Situation in the Surface Air Layer and Precipitation near a Nuclear Power Plant

¹⁴C IN TREE RINGS IN THE VICINITY OF THE RBMK REACTOR NUCLEAR POWER PLANT

Radiological Assessment of the Belarusian Nuclear Power Plant Site in the Pre-Operational Period

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Population Irradiation Dose Assessment for 14C Emissions from NPP with RBMK-1000 and EGP-2 Reactors

Cited by 9 publications

References 5 publications

Features of Monitoring the Radioactive Situation in the Surface Air Layer and Precipitation near a Nuclear Power Plant

Features of Monitoring the Radioactive Situation in the Surface Air Layer and Precipitation near a Nuclear Power Plant

14C IN TREE RINGS IN THE VICINITY OF THE RBMK REACTOR NUCLEAR POWER PLANT

Radiological Assessment of the Belarusian Nuclear Power Plant Site in the Pre-Operational Period

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¹⁴C IN TREE RINGS IN THE VICINITY OF THE RBMK REACTOR NUCLEAR POWER PLANT