Radiation exposure, power plants
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Not only nuclear power plants emit radioactive substances with the exhaust air. Fossil fuels contain various concentrations of natural radioactive substances which are released during combustion. Different firing techniques lead to extremely wide variations in enrichment of the flue dust due to the temperature-dependent volatility. For 1 GWa of electric energy generated the emission of long-lived alpha-radiating substances amounts to about 10 GBq for a hard coal and 1 GBq for a lignite-fired power plant. The effective dose equivalent for various power plants occurring at the most unfavourable point of influence is in the range of 0.1 to 5 microsievert per year.
Primary energy carrier |
Max. effective dose
in the environment µSv per year |
Dose-relevant nuclides |
Lignite
Hard coal
Oil |
0.5 to 2
1 to 4
1 |
U-238, Th-232 and decay products, in particular
Ra-226, Pb-210, Po-210 |
Natural gas |
0.2 to 1 |
Radon-222 and decay products |
Nuclear power |
0.1 to 5 |
Fission and activation products |
Radiation exposure by power plants with
various primary energy carriers standardized to the generation of 1
GWa electric energy
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ENS conferences |
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TopSafe 2017
12-16 Feb. 2017
Vienna, Austria |
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PIME 2017
19 - 22 March 2017, Middelburg Netherlands |
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RRFM 2017
14 - 18 May 2017 in Rotterdam, Netherlands |
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ETRAP 2017
30 May - 2 June 2017, Valencia, Spain |
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