HECLA experiments on interaction between metallic melt and hematite-containing concrete

Tuomo Sevón (Corresponding Author), Tuomo Kinnunen, Jouko Virta, Stefan Holmström, Tommi Kekki, Ilona Lindholm

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)

    Abstract

    In a hypothetical severe accident in a nuclear power plant, molten materials may come into contact with concrete, causing concrete ablation. In five HECLA experiments the interaction between metallic melt and concrete was investigated by pouring molten stainless steel at almost 1800 °C into cylindrical concrete crucibles. The tests were transient, i.e. no decay heat simulation was used. The main objective was to test the behavior of the FeSi concrete, containing hematite (Fe2O3) and siliceous aggregates. This special concrete type is used as a sacrificial layer in the Olkiluoto 3 EPR reactor pit, and very scarce experimental data is available about its behavior at high temperatures.

    It is concluded that no clear differences between the ablation of FeSi concrete and ordinary siliceous concrete were observed. The ablation depths were small, 25 mm at maximum. No dramatic effects, such as cracking of large pieces of concrete due to the thermal shock, took place. An important side result of the test series was gaining knowledge of the properties of the special concrete type. Chemical analyses were conducted and mechanical properties were measured.
    Original languageEnglish
    Pages (from-to)3586-3593
    Number of pages8
    JournalNuclear Engineering and Design
    Volume240
    Issue number10
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed
    Event4th International Topical Meeting on High Temperature Reactor Technology - Washington, United States
    Duration: 21 Sep 20081 Oct 2008

    Fingerprint

    Hematite
    hematite
    melt
    Concretes
    ablation
    experiment
    Experiments
    interactions
    Ablation
    electron spin resonance
    nuclear power plant
    accident
    Molten materials
    mechanical property
    steel
    ferric oxide
    pouring
    thermal shock
    nuclear power plants
    Stainless Steel

    Cite this

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    title = "HECLA experiments on interaction between metallic melt and hematite-containing concrete",
    abstract = "In a hypothetical severe accident in a nuclear power plant, molten materials may come into contact with concrete, causing concrete ablation. In five HECLA experiments the interaction between metallic melt and concrete was investigated by pouring molten stainless steel at almost 1800 °C into cylindrical concrete crucibles. The tests were transient, i.e. no decay heat simulation was used. The main objective was to test the behavior of the FeSi concrete, containing hematite (Fe2O3) and siliceous aggregates. This special concrete type is used as a sacrificial layer in the Olkiluoto 3 EPR reactor pit, and very scarce experimental data is available about its behavior at high temperatures.It is concluded that no clear differences between the ablation of FeSi concrete and ordinary siliceous concrete were observed. The ablation depths were small, 25 mm at maximum. No dramatic effects, such as cracking of large pieces of concrete due to the thermal shock, took place. An important side result of the test series was gaining knowledge of the properties of the special concrete type. Chemical analyses were conducted and mechanical properties were measured.",
    author = "Tuomo Sev{\'o}n and Tuomo Kinnunen and Jouko Virta and Stefan Holmstr{\"o}m and Tommi Kekki and Ilona Lindholm",
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    language = "English",
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    HECLA experiments on interaction between metallic melt and hematite-containing concrete. / Sevón, Tuomo (Corresponding Author); Kinnunen, Tuomo; Virta, Jouko; Holmström, Stefan; Kekki, Tommi; Lindholm, Ilona.

    In: Nuclear Engineering and Design, Vol. 240, No. 10, 2010, p. 3586-3593.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - HECLA experiments on interaction between metallic melt and hematite-containing concrete

    AU - Sevón, Tuomo

    AU - Kinnunen, Tuomo

    AU - Virta, Jouko

    AU - Holmström, Stefan

    AU - Kekki, Tommi

    AU - Lindholm, Ilona

    PY - 2010

    Y1 - 2010

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    AB - In a hypothetical severe accident in a nuclear power plant, molten materials may come into contact with concrete, causing concrete ablation. In five HECLA experiments the interaction between metallic melt and concrete was investigated by pouring molten stainless steel at almost 1800 °C into cylindrical concrete crucibles. The tests were transient, i.e. no decay heat simulation was used. The main objective was to test the behavior of the FeSi concrete, containing hematite (Fe2O3) and siliceous aggregates. This special concrete type is used as a sacrificial layer in the Olkiluoto 3 EPR reactor pit, and very scarce experimental data is available about its behavior at high temperatures.It is concluded that no clear differences between the ablation of FeSi concrete and ordinary siliceous concrete were observed. The ablation depths were small, 25 mm at maximum. No dramatic effects, such as cracking of large pieces of concrete due to the thermal shock, took place. An important side result of the test series was gaining knowledge of the properties of the special concrete type. Chemical analyses were conducted and mechanical properties were measured.

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