AGE special report: Activity build-up and corrosion

Martin Bojinov, Timo Laitinen, Jarmo Lehikoinen, Kari Mäkelä, Markus Olin, Timo Saario, Pekka Sten

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

    Abstract

    Due to the exposure to the aqueous coolant, the components of the primary circuit in a nuclear power plant oxidise, resulting both in the formation of an oxide film on the component surfaces and in the release of soluble metal ions. The properties of the oxide films are likely to have a significant effect on the corrosion susceptibility as well as on the rate at which radioactive nuclei are incorporated on the component surfaces from the coolant. The latter phenomenon has a marked effect on the occupational dose rates, especially during annual outages. This work aims at understanding the properties and behaviour of oxide films in different coolant conditions and thus at predicting the risks for corrosion and activity build-up. The approach chosen is to investigate and model separately the phenomena taking place at the film/solution interface, in the outer, porous part of the oxide film and in the inner, compact part of the film. In addition, a significant contribution is paid to the development of electrochemical techniques capable of operating in high-temperature environments with even extremely low conductivity. This report summarises the progress made during the first two years of the project.
    Original languageEnglish
    Title of host publicationFINNUS: The Finnish Research Programme on Nuclear Power Plant Safety
    Subtitle of host publicationInterim Report 1999 - August 2000
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages100-113
    ISBN (Electronic)951-38-5751-4
    ISBN (Print)951-38-5750-7
    Publication statusPublished - 2000
    MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material
    EventInterim Mid Term Seminar. Espoo, FI, 31 Oct. - 1 Nov. 2000 -
    Duration: 1 Jan 2000 → …

    Publication series

    SeriesVTT Tiedotteita - Research Notes
    Number2057
    ISSN1235-0605

    Conference

    ConferenceInterim Mid Term Seminar. Espoo, FI, 31 Oct. - 1 Nov. 2000
    Period1/01/00 → …

    Fingerprint

    Oxide films
    Coolants
    Corrosion
    Outages
    Nuclear power plants
    Metal ions
    Networks (circuits)
    Temperature

    Cite this

    Bojinov, M., Laitinen, T., Lehikoinen, J., Mäkelä, K., Olin, M., Saario, T., & Sten, P. (2000). AGE special report: Activity build-up and corrosion. In FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety: Interim Report 1999 - August 2000 (pp. 100-113). Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Research Notes, No. 2057
    Bojinov, Martin ; Laitinen, Timo ; Lehikoinen, Jarmo ; Mäkelä, Kari ; Olin, Markus ; Saario, Timo ; Sten, Pekka. / AGE special report : Activity build-up and corrosion. FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety: Interim Report 1999 - August 2000. Espoo : VTT Technical Research Centre of Finland, 2000. pp. 100-113 (VTT Tiedotteita - Research Notes; No. 2057).
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    title = "AGE special report: Activity build-up and corrosion",
    abstract = "Due to the exposure to the aqueous coolant, the components of the primary circuit in a nuclear power plant oxidise, resulting both in the formation of an oxide film on the component surfaces and in the release of soluble metal ions. The properties of the oxide films are likely to have a significant effect on the corrosion susceptibility as well as on the rate at which radioactive nuclei are incorporated on the component surfaces from the coolant. The latter phenomenon has a marked effect on the occupational dose rates, especially during annual outages. This work aims at understanding the properties and behaviour of oxide films in different coolant conditions and thus at predicting the risks for corrosion and activity build-up. The approach chosen is to investigate and model separately the phenomena taking place at the film/solution interface, in the outer, porous part of the oxide film and in the inner, compact part of the film. In addition, a significant contribution is paid to the development of electrochemical techniques capable of operating in high-temperature environments with even extremely low conductivity. This report summarises the progress made during the first two years of the project.",
    author = "Martin Bojinov and Timo Laitinen and Jarmo Lehikoinen and Kari M{\"a}kel{\"a} and Markus Olin and Timo Saario and Pekka Sten",
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    series = "VTT Tiedotteita - Research Notes",
    publisher = "VTT Technical Research Centre of Finland",
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    Bojinov, M, Laitinen, T, Lehikoinen, J, Mäkelä, K, Olin, M, Saario, T & Sten, P 2000, AGE special report: Activity build-up and corrosion. in FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety: Interim Report 1999 - August 2000. VTT Technical Research Centre of Finland, Espoo, VTT Tiedotteita - Research Notes, no. 2057, pp. 100-113, Interim Mid Term Seminar. Espoo, FI, 31 Oct. - 1 Nov. 2000, 1/01/00.

    AGE special report : Activity build-up and corrosion. / Bojinov, Martin; Laitinen, Timo; Lehikoinen, Jarmo; Mäkelä, Kari; Olin, Markus; Saario, Timo; Sten, Pekka.

    FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety: Interim Report 1999 - August 2000. Espoo : VTT Technical Research Centre of Finland, 2000. p. 100-113 (VTT Tiedotteita - Research Notes; No. 2057).

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

    TY - CHAP

    T1 - AGE special report

    T2 - Activity build-up and corrosion

    AU - Bojinov, Martin

    AU - Laitinen, Timo

    AU - Lehikoinen, Jarmo

    AU - Mäkelä, Kari

    AU - Olin, Markus

    AU - Saario, Timo

    AU - Sten, Pekka

    PY - 2000

    Y1 - 2000

    N2 - Due to the exposure to the aqueous coolant, the components of the primary circuit in a nuclear power plant oxidise, resulting both in the formation of an oxide film on the component surfaces and in the release of soluble metal ions. The properties of the oxide films are likely to have a significant effect on the corrosion susceptibility as well as on the rate at which radioactive nuclei are incorporated on the component surfaces from the coolant. The latter phenomenon has a marked effect on the occupational dose rates, especially during annual outages. This work aims at understanding the properties and behaviour of oxide films in different coolant conditions and thus at predicting the risks for corrosion and activity build-up. The approach chosen is to investigate and model separately the phenomena taking place at the film/solution interface, in the outer, porous part of the oxide film and in the inner, compact part of the film. In addition, a significant contribution is paid to the development of electrochemical techniques capable of operating in high-temperature environments with even extremely low conductivity. This report summarises the progress made during the first two years of the project.

    AB - Due to the exposure to the aqueous coolant, the components of the primary circuit in a nuclear power plant oxidise, resulting both in the formation of an oxide film on the component surfaces and in the release of soluble metal ions. The properties of the oxide films are likely to have a significant effect on the corrosion susceptibility as well as on the rate at which radioactive nuclei are incorporated on the component surfaces from the coolant. The latter phenomenon has a marked effect on the occupational dose rates, especially during annual outages. This work aims at understanding the properties and behaviour of oxide films in different coolant conditions and thus at predicting the risks for corrosion and activity build-up. The approach chosen is to investigate and model separately the phenomena taking place at the film/solution interface, in the outer, porous part of the oxide film and in the inner, compact part of the film. In addition, a significant contribution is paid to the development of electrochemical techniques capable of operating in high-temperature environments with even extremely low conductivity. This report summarises the progress made during the first two years of the project.

    M3 - Chapter or book article

    SN - 951-38-5750-7

    T3 - VTT Tiedotteita - Research Notes

    SP - 100

    EP - 113

    BT - FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Bojinov M, Laitinen T, Lehikoinen J, Mäkelä K, Olin M, Saario T et al. AGE special report: Activity build-up and corrosion. In FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety: Interim Report 1999 - August 2000. Espoo: VTT Technical Research Centre of Finland. 2000. p. 100-113. (VTT Tiedotteita - Research Notes; No. 2057).