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.
thermal decomposition
oxides
surfaces
severe accident
Ruthenium
Primary circuit
deposition
Ruthenium tetroxide
Nuclear accidents
phebus-fp
nuclear-power-plant
primary circuit
Nuclear Science & Technology
Chemistry
containment
release
Air radiolysis
Author
Ivan Kajan
Chalmers, Chemistry and Chemical Engineering, Energy and Material, Nuclear Chemistry
T. Karkela
Technical Research Centre of Finland (VTT)
A. Auvinen
Technical Research Centre of Finland (VTT)
Christian Ekberg
Chalmers, Chemistry and Chemical Engineering, Energy and Material, Nuclear Chemistry
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