Effect of nitrogen compounds on transport of ruthenium through the RCS
Journal article, 2017
Ruthenium is a fission product that can be released from the fuel in case of a severe nuclear accident. In this work the impact of the atmosphere composition, including air radiolysis products, on the transport of ruthenium through a primary circuit was examined. Experiments were performed at temperatures 1300, 1500 and 1700 K in a slightly humid air. In the experiments significant effect of nitrogen oxides (N2O, NO2) and nitric acid on the ruthenium chemistry in the model primary circuit was observed. The obtained results indicate a strong effect of air radiolysis products on the quantity partitioning of transported ruthenium to gaseous and aerosol compounds.
primary circuit
surfaces
Ruthenium
Air radiolysis
severe accident
Primary circuit
phebus-fp
oxides
Nuclear Science & Technology
Chemistry
release
containment
nuclear-power-plant
Ruthenium tetroxide
Nuclear accidents
thermal decomposition
deposition
Author
Ivan Kajan
Chalmers, Chemistry and Chemical Engineering, Energy and Material
T. Karkela
VTT Technical Research Centre of Finland
A. Auvinen
VTT Technical Research Centre of Finland
Christian Ekberg
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Industrial Materials Recycling
Journal of Radioanalytical and Nuclear Chemistry
0236-5731 (ISSN) 1588-2780 (eISSN)
Vol. 311 3 2097-2109Roots
Basic sciences
DOI
10.1007/s10967-017-5172-7