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 2097-2109

Roots

Basic sciences

DOI

10.1007/s10967-017-5172-7

More information

Latest update

4/24/2018