Radiological and Environmental Effects in Ignalina Nuclear Power Plant Cooling Pond – Lake Druksiai: From Plant put in Operation to Shut Down Period of Time

Nedveckaitė, T.; Marčiulionienė, Danutė; Mažeika, Jonas; Paškauskas, Ričardas

doi:10.5772/18119

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…The detail investigation of Lake Druksiai reference organisms radiological exposure due to background radionuclides are presented in (Nedveckaite et al, 2007(Nedveckaite et al, , 2011a(Nedveckaite et al, , 2011b. Based on these data it can be concluded that the background radionuclide 238 U make up a significant part of the radiological doses to non-human biota reference organisms in the INPP cooling pond Lake Druksiai.…”

Section: Evaluation Of the Impact Of Ionising Radiation On The Nonhummentioning

confidence: 97%

The assessment of ionising radiation impact on the cooling pond freshwater ecosystem non-human biota from the Ignalina NPP operation beginning to shut down and initial decommissioning

Mažeika

Marčiulionienė

Nedveckaitė

et al. 2016

Journal of Environmental Radioactivity

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Section: Evaluation Of the Impact Of Ionising Radiation On The Nonhummentioning

confidence: 97%

The assessment of ionising radiation impact on the cooling pond freshwater ecosystem non-human biota from the Ignalina NPP operation beginning to shut down and initial decommissioning

Mažeika

Marčiulionienė

Nedveckaitė

et al. 2016

Journal of Environmental Radioactivity

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“…However, significant changes in the cycle of organic and inorganic matter in the lake should have been associated with changes in the thermal regime [40]. An increase in temperature caused changes in the carbon cycle of the lake due to the impact on the lake's flora and fauna [41][42][43], water mixing, as well as organic and inorganic…”

Section: Plos Onementioning

confidence: 99%

What cooling pond sediments can reveal about 14C in nuclear power plant liquid effluents: Case study Lake Drūkšiai, Ignalina nuclear power plant cooling pond

Barisevičiūtė,

Mažeika,

Maceika

et al. 2023

PLoS ONE

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The vertical distribution of radiocarbon (14C) was examined in two bottom sediment cores, taken from Lake Drūkšiai which had been used as a cooling pond for the Ignalina nuclear power plant (INPP) with two RBMK type reactors. The aim of this work was to reconstruct 14C amounts in the lake ecosystem during an 8-year period after the INPP was closed, as any official monitoring of 14C in liquid releases from the INPP was not performed. The possibility of comparing the variation of the 14C specific activity in the corresponding layers of the same period of 3 different cores (one taken in 2013 and two in 2019) revealed the variability of the determined values of liquid radiocarbon discharges from the INPP into the lake. Cores taken in 2019 showed a permament14C release rate of 0.76±0.06 GBq/y all eight years after the closure of the INPP. The 14C release rate established from radiocarbon measurements in both cores did not differ by more than 0.8 GBq/y. However, including data from the core taken several years ago, the estimated radiocarbon release rate values varied within 1.3 GBq/y.

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“…Experimentally determined C/N ratio values in the organics of the bottom sediment layers are informative to assess terrestrial versus aquatic plants contribution. However, we decided not to use C/N ratios to determine the ratio of organic matter of allochthonous versus autochthonous origin organic matter in sediments throughout the entire studied period, since changes in the temperature regime of lake water after the start of operation of the INPP have caused changes in plant species diversity in the lake [18,23]. The C/N ratio for planktonic and benthic algae and macrophytes varies.…”

Section: Assimilation Rate Of Alkali-soluble Fraction To Alkali-insolublementioning

confidence: 99%

Modeling of 14C Vertical Distribution in Bottom Sediments of the Ignalina Nuclear Power Plant Cooling Reservoir

Barisevičiūtė

Maceika

Juodis

et al. 2021

Water

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The Ignalina Nuclear Power Plant (INPP) in Lithuania is a rare case when lake water is used instead of river or sea water for cooling. Lake Drūkšiai with water residence time of 3–4 year and undisturbed sediment layers is a unique system to assess the impact of a nuclear facility on the aquatic ecosystem with a sufficiently high temporal resolution. We constructed a model of radiocarbon cycling processes in lake ecosystem which evaluates the 14C specific activity vertical distribution in two organic sediment fractions: alkali-soluble and alkali-insoluble. Model calculations proved that during the first 15 years of operation since 1983, 14C annual aqueous releases from the INPP were in water dissolved inorganic carbon form and varied in the range of 2.4 ÷ 3.7 × 108 Bq/year. The results of the modeling of hypothetic scenarios also showed that there was the only one episode of elevated releases from the INPP in 2000–2001, which changed the interaction between the two organic sediment fractions for the period of 2000–2006. It was caused most probably by released chemicals from INPP but not by 14C contamination. Interaction processes between both sediment fractions recovered to its original state after 2006, indicating that the released additional chemical compounds lake ecosystem have been cleaned-up.

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Radiological and Environmental Effects in Ignalina Nuclear Power Plant Cooling Pond – Lake Druksiai: From Plant put in Operation to Shut Down Period of Time

Cited by 4 publications

References 12 publications

The assessment of ionising radiation impact on the cooling pond freshwater ecosystem non-human biota from the Ignalina NPP operation beginning to shut down and initial decommissioning

The assessment of ionising radiation impact on the cooling pond freshwater ecosystem non-human biota from the Ignalina NPP operation beginning to shut down and initial decommissioning

What cooling pond sediments can reveal about 14C in nuclear power plant liquid effluents: Case study Lake Drūkšiai, Ignalina nuclear power plant cooling pond

Modeling of 14C Vertical Distribution in Bottom Sediments of the Ignalina Nuclear Power Plant Cooling Reservoir

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