Effect of nitrogen compounds on transport of ruthenium through the RCS
Artikel i vetenskaplig tidskrift, 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

Författare

Ivan Kajan

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

T. Karkela

Teknologian Tutkimuskeskus (VTT)

A. Auvinen

Teknologian Tutkimuskeskus (VTT)

Christian Ekberg

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Industriell materialåtervinning

Journal of Radioanalytical and Nuclear Chemistry

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

Vol. 311 2097-2109

Fundament

Grundläggande vetenskaper

DOI

10.1007/s10967-017-5172-7