14C studies in the vicinity of the Czech NPPs

Annual Variations of 14C Concentration in the Tree Rings in the Vicinity of Ignalina Nuclear Power Plant

“…They concluded that the impact from the power plant on 14 C levels in Zlkovice (monitoring station situated 5 km away from NPP) was negligible, resulting in 5‰ Δ 14 C, which is very close to the statistical limits (Povinec et al 2015). Other authors observed similar values of the 14 C excess in the vicinity of the Dukonavy NPP (Czech Republic) (Svetlik et al 2012). The reported value of the 14 C excess was 4.8‰ Δ 14 C. The observed small excess of 14 C in the NPP surroundings was partially due the influence of the fossil fuel burning and small abundance of 14 CO 2 form (about 5%) released from the light water PWR type NPP (Svetlik et al 2012).…”

“…Other authors observed similar values of the 14 C excess in the vicinity of the Dukonavy NPP (Czech Republic) (Svetlik et al 2012). The reported value of the 14 C excess was 4.8‰ Δ 14 C. The observed small excess of 14 C in the NPP surroundings was partially due the influence of the fossil fuel burning and small abundance of 14 CO 2 form (about 5%) released from the light water PWR type NPP (Svetlik et al 2012). Xu et al (2016) analyzed the hypothesis that specific activities of 14 C are positively correlated with the annual electricity generation values of the Fukushima Dai-ichi Nuclear Power Plant with BWR type reactors.…”

Isotope-Based Source Apportionment of EC Aerosol Particles during Winter High-Pollution Events at the Zeppelin Observatory, Svalbard

“…The very high f bb (February 6) sample is characterized by typical nonbiomass chemical features. We note that observations of 14 C enrichment due to minute emissions of radiogenic emissions from, e.g., nuclear reactors or the burning of 14 C-labeled medical research waste have been observed in the North European atmosphere. − Hence, it cannot be excluded that the f bb value of 98% for this sample is somehow affected by an admixture of a radiogenic source with artificially high 14 C/ 12 C ratios and should be excluded from a final (conservative) estimate of f bb . In either case, the inclusion or exclusion of these two high- f bb samples or composites does not significantly change the overall 14 C-based source apportionment results for the wintertime Zeppelin Observatory EC high-pollution events; both fossil fuel and biomass combustion are contributing substantially.…”

Radiocarbon in the Atmosphere of the Žlkovce Monitoring Station of the Bohunice NPP: 25 Years of Continuous Monthly Measurements

“…Several papers have been published studying 14 C releases from nuclear reactors, and their impact on the local and regional environments (Kunz 1985;Cimbák et al 1986;Obelić et al 1986;Povinec et al 1986aPovinec et al ,b, 2008Povinec et al , 2009Povinec et al , 2012Povinec et al , 2015Levin et al 1988;Hertelendi et al 1989;Loosli and Oeschger 1989;Milton et al 1995;Stenström et al 1996Stenström et al , 1998Uchrin et al 1998;Roussel-Debet et al 2006;Svetlik et al 2007Svetlik et al , 2010Svetlik et al , 2012. In all these investigations, small but noticeable evidence has been found of the impact of NPPs on local/regional environments.…”