Evaluation of the Contribution of Technogenic Radionuclides to the Total Activity of NPP Emissions on the Basis of a Simulation Model

Екидин, А. А.; Малиновский, Г. П.; Rogozina, Marina; Васильев, А. В.; Vasyanovich, M. E.; Yarmoshenko, Ilia V.

doi:10.1007/s10512-016-0059-1

Cited by 4 publications

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“…• possible critical population groups. As a result of nuclear transformations, hundreds of radionuclides are formed in the reactor core, but only a limited number of them can have an effect on the population and the environment through emissions, discharges and the generation of radioactive waste [11][12][13][14][15][16]. Radioactive substances entering the environment can be in solid, liquid or gaseous states [17,18].…”

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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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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“…По рекомендациям Международного агентства по атомной энергии (International Atomic Energy Agency, IAEA), значения фоновых уровней следует вычитать из результатов измерения активности для определения дозовых нагрузок на население, обусловленных только практической деятельностью [11]. Анализ доступной информации показывает необходимость учёта фоновой активности радионуклидов в водоёмах, используемых для нужд АЭС [10]. В числе наиболее важных (с точки зрения воздействия сбросов АЭС на окружающую среду) Международное агентство по атомной энергии рассматривает 31 радионуклид [12].…”

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Баромембранный Метод Подготовки Счётных Образцов Воды Для Измерения Ультранизких Концентраций Радионуклидов

Vasyanovich

Екидин

Трапезников

et al. 2020

mbj

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This paper demonstrates the use of the baromembrane method for measuring ultra-low concentrations of radionuclides in water of freshwater reservoirs. The relevance is due to the need to determine radionuclides introduction into water cooling ponds used by enterprises of nuclear fuel cycle. Radionuclides of natural and technogenic origin, not associated with enterprise discharge, are always present in water cooling ponds, forming a natural or technogenic altered background. Its presence often makes it difficult to identify contribution of enterprise’s discharge to water activity, since routine monitoring methods are characterized by a very high detection limit for radionuclides. Traditional methods for determining background radionuclides concentrations require sampling of at least 500 L of water, followed by their evaporation to get a dry residue. This procedure takes at least 5 days. It is possible to reduce time and energy spent on vaporizing hundreds of liters of water by pre-concentrating radionuclides in a smaller sample volume with the baromembrane method. To demonstrate this method, a portable installation with osmotic membranes was used being characterized with initial productivity of 6.0 L·min−1. The osmotic membranes separate source water sample into two components: demineralized permeate and concentrate, containing radioactive substances. This method allows preliminary concentration of water samples from 500 to 20 L in 10–15 hours with minimal losses of radionuclides (time period depends on water mineralization level). The method is universal; it can be used for concentration of dissolved salts of any heavy metals and other organic compounds. It allows preparation of water countable samples in much shorter time that traditional method (evaporation).

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Analysis of ultra-low radionuclide concentrations in water samples with baromembrane method

Vasyanovich

Екидин

Трапезников

et al. 2021

Nuclear Engineering and Technology

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Evaluation of the Contribution of Technogenic Radionuclides to the Total Activity of NPP Emissions on the Basis of a Simulation Model

Cited by 4 publications

References 0 publications

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

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

Баромембранный Метод Подготовки Счётных Образцов Воды Для Измерения Ультранизких Концентраций Радионуклидов

Analysis of ultra-low radionuclide concentrations in water samples with baromembrane method

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