Radioiodine Release into the Atmosphere during Normal Operation of Nuclear Power Plants

Екидин, А. А.; Antonov, K. L.; Vasyanovich, M. E.; Kapustin, Ivan A.; Filatov, I. Yu.

doi:10.1134/s1066362219030111

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…Radioactive iodine is considered to be one of the most dangerous radioactive elements, and it can be released when a nuclear accident occurs. − 125 I, 129 I, and 131 I are the three most representative radioactive isotopes of iodine from nuclear fuel reprocessing. − Among them, 129 I has raised many concerns due to its very long half-life (1.7 × 10 7 years). , …”

Section: Introductionmentioning

confidence: 99%

Bismuth Coordinates with Iodine Atoms to Form Chemical Bonds for Existing Stabilization in Boron Glass

et al. 2022

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Stabilizing radioactive iodine in boron glass for disposal was the ultimate goal of this study. In this study, bismuth was used near a monument. Thermogravimetric analysis showed that bismuth could remarkably stabilize iodine atoms in boron glass (only 3.74% of the mass was lost at 850 °C). Scanning electron microscopy–energy dispersive spectrometry images showed that most of the AgI was uniformly immobilized in the glass network. X-ray photoelectron spectrometry and NMR results confirmed the change in the coordination number of boron in the samples. The density functional theory calculation helped to understand the reason for the stable presence of iodine in boron glass. Iodine atoms were difficult to bond directly with boron atoms but tended to bond with bismuth atoms. From the spatial distribution of the structural molecular orbitals, it was observed that the bismuth atom releases electrons when stimulated, and the iodine atom needs to gain an electron to reach stability. At a low treatment temperature of 550 °C, the maximum density of the immobilized sample containing bismuth is 2.42 g·cm–3, and its iodine leaching rate at day 7 can be as low as 3.77 × 10–6 g·m–2·d–1. This study provides a way to improve the properties of boron glass microscopically in the future.

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Section: Introductionmentioning

confidence: 99%

Bismuth Coordinates with Iodine Atoms to Form Chemical Bonds for Existing Stabilization in Boron Glass

et al. 2022

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“…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]. 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.…”

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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Estimation of the Specific Activity of Iodine Release to Comply with the Base Principle of INPRO Methodology for PWR, BWR NPP

2022

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Radioiodine Release into the Atmosphere during Normal Operation of Nuclear Power Plants

Cited by 9 publications

References 11 publications

Bismuth Coordinates with Iodine Atoms to Form Chemical Bonds for Existing Stabilization in Boron Glass

Bismuth Coordinates with Iodine Atoms to Form Chemical Bonds for Existing Stabilization in Boron Glass

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

Estimation of the Specific Activity of Iodine Release to Comply with the Base Principle of INPRO Methodology for PWR, BWR NPP

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