Ruthenium transport in an RCS with airborne CsI

Teemu Kärkelä; Ivan Kajan; Unto Tapper; Ari Auvinen; Christian Ekberg

doi:10.1016/j.pnucene.2017.04.019

Ruthenium transport in an RCS with airborne CsI

Teemu Kärkelä, Ivan Kajan, Unto Tapper, Ari Auvinen, Christian Ekberg

Chalmers University of Technology

Research output: Contribution to journal › Article › Scientific › peer-review

8 Citations (Scopus)

Abstract

Ruthenium is one of the most radiotoxic fission products which can be released from fuel as ruthenium oxides in an air ingress accident at a nuclear power plant. In this study it was found that the transport of the released ruthenium oxides through a reactor coolant system into the containment building is significantly affected by the atmospheric conditions. Airborne CsI increased the transport of gaseous ruthenium compared with that in a pure air atmosphere. The overall transport of ruthenium increased with temperature. In order to understand the behaviour of ruthenium in accident conditions, it is important to widen the experimental conditions from pure air/steam atmospheres to more realistic mixtures of prototypic gases and aerosols.

Original language	English
Pages (from-to)	38-48
Journal	Progress in Nuclear Energy
Volume	99
DOIs	https://doi.org/10.1016/j.pnucene.2017.04.019
Publication status	Published - 1 Aug 2017
MoE publication type	A1 Journal article-refereed

Keywords

ruthenium
caesium iodide
aerosol
severe accident
source term

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.pnucene.2017.04.019Licence: CC BY-NC-ND

Cite this

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abstract = "Ruthenium is one of the most radiotoxic fission products which can be released from fuel as ruthenium oxides in an air ingress accident at a nuclear power plant. In this study it was found that the transport of the released ruthenium oxides through a reactor coolant system into the containment building is significantly affected by the atmospheric conditions. Airborne CsI increased the transport of gaseous ruthenium compared with that in a pure air atmosphere. The overall transport of ruthenium increased with temperature. In order to understand the behaviour of ruthenium in accident conditions, it is important to widen the experimental conditions from pure air/steam atmospheres to more realistic mixtures of prototypic gases and aerosols.",

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AU - Kärkelä, Teemu

AU - Kajan, Ivan

AU - Tapper, Unto

AU - Auvinen, Ari

AU - Ekberg, Christian

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AB - Ruthenium is one of the most radiotoxic fission products which can be released from fuel as ruthenium oxides in an air ingress accident at a nuclear power plant. In this study it was found that the transport of the released ruthenium oxides through a reactor coolant system into the containment building is significantly affected by the atmospheric conditions. Airborne CsI increased the transport of gaseous ruthenium compared with that in a pure air atmosphere. The overall transport of ruthenium increased with temperature. In order to understand the behaviour of ruthenium in accident conditions, it is important to widen the experimental conditions from pure air/steam atmospheres to more realistic mixtures of prototypic gases and aerosols.

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KW - caesium iodide

KW - aerosol

KW - severe accident

KW - source term

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JO - Progress in Nuclear Energy

JF - Progress in Nuclear Energy

ER -

Ruthenium transport in an RCS with airborne CsI

Abstract

Keywords

UN SDGs

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