Prediction of the change in the average yearly concentration of radionuclides in the cooling pond at the chernobyl nuclear power plant

Kononovich, A. L.; Oskolkov, B. Ya.; Kulikov, L. E.; Nosovskii, A. V.; Korotkov, V. T.

doi:10.1007/bf02407415

Cited by 2 publications

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“…The location's proximity (approx. 2-3 km) to the destroyed power unit contributed to significant radioactive contamination of the CP [2][3][4]. In addition, the significant accumulation of radioactive substances by various environmental objects was facilitated by the relative isolation of the CP, which made it one of the most contaminated reservoirs in the Chornobyl Exclusion Zone [5].…”

Section: Cs In Fish Of the Cooling Pond (Cp) Of Chnppmentioning

confidence: 99%

Ecological Half-Life of 137Cs in Fish

et al. 2023

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In this study, the long-term (i.e., over a 27-year period) dynamics of 137Cs content are presented for seven species of fish in both the cooling pond (CP) of the Chornobyl Nuclear Power Plant and the Kaniv Reservoir (KR). The decline of 137Cs specific activity in fish exhibits various patterns. For certain years in the KR, fish belonging to different ecological groups experienced an increase rather than a decrease in specific activity levels of 137Cs. From 2012 to 2014, the concentration of 137Cs in all studied species in the KR ranged from 4 to 23 Bq/kg. In the CP during 2012–2013, fish still showed high contamination levels, ranging from 770 to 8300 Bq/kg. The ecological half-life (Teco) was determined for all the studied fish species. For most fish species (i.e., P. fluviatilis, B. bjoerkna, A. brama, S. lucioperca, A. aspius), the shortest 137Cs Teco values were obtained in the CP, being a highly radiocaesium-contaminated waterbody. In contrast, two fish species (R. rutilus and S. glanis) in the CP exhibited a considerably slower rate of 137Cs removal from their bodies compared to even the relatively cleaner KR. Moreover, the 137Cs Teco in R. rutilus and S. glanis was nearly twice as long as that observed in other species within the CP. We assume that the redistribution of 137Cs in the body of fish is affected by multidirectional mechanisms: accumulation, retention, and/or excretion. The functioning of these mechanisms can vary among different fish species. The observed level of 137Cs content in a particular fish species at a given time point results from the combined effects of these mechanisms. Fish likely have the ability to absorb and accumulate radiocaesium in their bodies selectively, and this demand appears to be species-specific.

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Section: Cs In Fish Of the Cooling Pond (Cp) Of Chnppmentioning

confidence: 99%

Ecological Half-Life of 137Cs in Fish

et al. 2023

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“…Tables: Table 1 -Estimated radioactive contamination of ChNPP Cooling Pond bottom deposits in TBq (Ci) (Kazakov et al 1994;Kononovich et al 1993;Voitchekhovich 2001). Table 2.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Environmental Problems Associated With Decommissioning the Chernobyl Nuclear Power Plant Cooling Pond

Oskolkov¹,

Bondarkov²,

Gaschak³

et al. 2010

Health Physics

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Decommissioning of nuclear power plants and other nuclear fuel cycle facilities has been an imperative issue lately. There exist significant experience and generally accepted recommendations on remediation of lands with residual radioactive contamination; however, there are hardly any such recommendations on remediation of cooling ponds that, in most cases, are fairly large water reservoirs. The literature only describes remediation of minor reservoirs containing radioactive silt (a complete closure followed by preservation) or small water reservoirs resulting in reestablishing natural water flows. Problems associated with remediation of river reservoirs resulting in flooding of vast agricultural areas also have been described. In addition, the severity of environmental and economic problems related to the remedial activities is shown to exceed any potential benefits of these activities. One of the large, highly contaminated water reservoirs that require either remediation or closure is Karachay Lake near the MAYAK Production Association in the Chelyabinsk Region of Russia where liquid radioactive waste had been deep well injected for a long period of time. Backfilling of Karachay Lake is currently in progress. It should be noted that secondary environmental problems associated with its closure are considered to be of less importance since sustaining Karachay Lake would have presented a much higher radiological risk. Another well-known highly contaminated water reservoir is the Chernobyl Nuclear Power Plant (ChNPP) Cooling Pond, decommissioning of which is planned for the near future. This study summarizes the environmental problems associated with the ChNPP Cooling Pond decommissioning.

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Prediction of the change in the average yearly concentration of radionuclides in the cooling pond at the chernobyl nuclear power plant

Cited by 2 publications

References 0 publications

Ecological Half-Life of 137Cs in Fish

Ecological Half-Life of 137Cs in Fish

Environmental Problems Associated With Decommissioning the Chernobyl Nuclear Power Plant Cooling Pond

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