Monitoring and assessment of radionuclide discharges from Temelín Nuclear Power Plant into the Vltava River (Czech Republic)

The paper presents results of a long-term investigations of tritium activity concentrations in precipitation and radiocesium activity concentrations in ground level air in Belgrade, Serbia. Samples were collected at three locations in Belgrade (Meteorological Station of Belgrade MS at Zeleno Brdo (ZB), Meteorological Station MS Usek (USEK), and Vinča Institute of Nuclear Sciences (VINS)). Presented data cover the period 1985-1997. Significantly higher tritium levels were measured in samples in VINS compared with off-site location, while the impact of research reactor for 137 Cs was not detected. It was found that the value of the symmetrical index n is higher for VINS in case of tritium, compared to other locations, which is in accordance with the fact that the highest average monthly concentrations of tritium were obtained in the samples from the cited place. Although the highest value of index n in case of 137 Cs was also obtained for VINS, average monthly concentrations of 137 Cs in ground level air for this location were the lowest. The 137 Cs concentration in the ground level air is described by a kinetic equation of the first order and provides a good description of the time changes in these concentrations.

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“…This increase in T eff (like at USEK) has also been observed in Belarus, Ukraine, and Finland (Hanslik et al 2009a).…”

Section: The Effective Ecological Half-lifesupporting

confidence: 74%

Determination of Symmetrical Index for 3H in Precipitation and 137Cs in Ground Level Air

Janković

Todorović

2011

Water Air Soil Pollut

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“…Low energy soft β -irradiation has not been considered as harmful irradiation causing death or significant irreversible changes of organisms. Activities of the tritiated water used in our experiments are similar to surface waters in close proximity to nuclear power plants (NPP) in the Czech Republic (~10 -500 Bq.l -1 , data from website Monitoring of Radiation Situation, Czech Office for Nuclear Safety) and in freshwater in rivers downstream of NPP (HanSlík et al 2009). These levels of radiation have not been believed harmful for organisms living in such environment.…”

Section: Discussionmentioning

confidence: 96%

“…Large amounts of tritium may be released into the environment from nuclear power plants (Fiévet et al 2013). In the Czech Republic, the Temelín nuclear power plant discharged nearly 30 Tbq of tritium in 2005(HanSlík et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Tritium influence on morphology, reactive oxygen species production and catalase gene expression in Pseudendoclonium basilense and Stigeoclonium nanum (Chlorophyta)

Hašler¹,

Ondřej²,

Švécarová³

et al. 2017

Fottea

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Abstract:The response of two strains of Pseudendoclonium basilense viscHer and Stigeoclonium nanum (dillwyn) kützing to ionizing radiation was studied under laboratory conditions. Both strains were isolated as epiphytic from stagnant water bodies under ambient levels of ionizing radiation and cultivated under laboratory conditions on a gradient of tritiated water diluted in liquid Bold´s basal medium. Exposure to low doses of ionizing radiation stimulated changes in cell dimensions and morphology of in both strains and catalase gene expression in Pseudendoclonium basilense. Moreover, the addition of tritiated water stimulated production of reactive oxygen species in Pseudendoclonium basilense which concentration decreased after increased gene expression of catalase.

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“…1. The impact of radioactivity released by the nuclear power plant is negligible, with the exception of tritium, as we described elsewhere (Hanslík et al 2009(Hanslík et al , 2010. Because the power plant's contribution to the total amounts of 137 Cs and 90 Sr in the recipient is so low that it is covered with the old contamination, the monitoring of the power plant impact on the hydrosphere demands a precise determination of the radionuclide background.…”

Section: Introductionmentioning

confidence: 96%

“…Nowadays, mainly tritium ( 3 H), strontium 90 ( 90 Sr) and caesium 137 ( 137 Cs) are found in samples of surface water and other components of the hydrosphere, not only in the vicinity of the destroyed Chernobyl power plant (Bondar et al 2015) but also at more remote locations. However, these radionuclides have been observed to decrease continuously since they were introduced into the environment (Hanslík et al 2009;Hanslík and Ivanovová 2010;Smith and Beresford 2005;Vakulovsky et al 1994;Zibold et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Temporal Development of Radiocaesium and Radiostrontium Concentrations in the Hydrosphere—Methods of Evaluation

Juranová

Hanslík

Marešová

2015

Water Air Soil Pollut

Self Cite

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A significant amount of artificial radionuclides has been introduced into the environment in the last century during atmospheric nuclear weapons tests and the Chernobyl accident. In this study, we investigated the temporal changes of concentrations and amounts of these radionuclides ( 90 Sr and 137 Cs) in surface water and river bed sediments. In order to evaluate the artificial radionuclide contamination diminution, we used and compared two different approaches: using a kinetic equation of the first order and, if needed, dividing the monitored period into two intervals, and in addition expressing the whole process in one equation with a series of exponential functions. Effective ecological halflives were estimated as rates of decrease. In most cases, the ecological processes were proven to affect the radionuclide removal from the hydrosphere besides their radioactive decay. Furthermore, based on the assessment made, the 90 Sr and 137 Cs data were extrapolated and the radionuclide concentrations, which occurred in the hydrosphere after the fallout deposition in 1986, were estimated.

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Monitoring and assessment of radionuclide discharges from Temelín Nuclear Power Plant into the Vltava River (Czech Republic)

Cited by 9 publications

References 3 publications

Determination of Symmetrical Index for 3H in Precipitation and 137Cs in Ground Level Air

Determination of Symmetrical Index for 3H in Precipitation and 137Cs in Ground Level Air

Tritium influence on morphology, reactive oxygen species production and catalase gene expression in Pseudendoclonium basilense and Stigeoclonium nanum (Chlorophyta)

Temporal Development of Radiocaesium and Radiostrontium Concentrations in the Hydrosphere—Methods of Evaluation

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