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.

Ruthenium tetroxide

phebus-fp

release

severe accident

deposition

surfaces

primary circuit

Ruthenium

Nuclear accidents

thermal decomposition

containment

Air radiolysis

Nuclear Science & Technology

nuclear-power-plant

Primary circuit

Chemistry

oxides

Author

Ivan Kajan

Chalmers, Chemistry and Chemical Engineering, Energy and Material

T. Karkela

Technical Research Centre of Finland (VTT)

A. Auvinen

Technical Research Centre of Finland (VTT)

Christian Ekberg

Industrial Materials Recycling

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Journal of Radioanalytical and Nuclear Chemistry

0236-5731 (ISSN) 1588-2780 (eISSN)

Vol. 311 3 2097-2109

Roots

Basic sciences

Subject Categories

Earth and Related Environmental Sciences

Chemical Sciences

DOI

10.1007/s10967-017-5172-7

More information

Latest update

10/31/2022