NDE of the disposal canisters

Ari Koskinen, Tarja Jäppinen, Matti Sarkimo, Aarne Lipponen, Jonne Haapalainen, Stefan Sandlin, Esa Leskelä, Jorma Pitkänen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.
    Original languageEnglish
    Title of host publicationBaltica IX. International Conference on Life Management and Maintenance for Power Plants
    EditorsPertti Auerkari, Juha Veivo
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages411-423
    ISBN (Electronic)978-951-38-8026-2
    ISBN (Print)978-951-38-8025-5
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    EventBALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
    Duration: 11 Jun 201313 Jun 2013

    Publication series

    SeriesVTT Technology
    Number106
    ISSN2242-1211

    Conference

    ConferenceBALTICA IX - International Conference on Life Management and Maintenance for Power Plants
    CountryFinland
    CityHelsinki-Stockholm
    Period11/06/1313/06/13

    Fingerprint

    nondestructive testing
    testing method
    copper
    radioactive waste
    eddy
    iron
    waste disposal
    defect
    bedrock
    inspection
    method

    Cite this

    Koskinen, A., Jäppinen, T., Sarkimo, M., Lipponen, A., Haapalainen, J., Sandlin, S., ... Pitkänen, J. (2013). NDE of the disposal canisters. In P. Auerkari, & J. Veivo (Eds.), Baltica IX. International Conference on Life Management and Maintenance for Power Plants (pp. 411-423). Espoo: VTT Technical Research Centre of Finland. VTT Technology, No. 106
    Koskinen, Ari ; Jäppinen, Tarja ; Sarkimo, Matti ; Lipponen, Aarne ; Haapalainen, Jonne ; Sandlin, Stefan ; Leskelä, Esa ; Pitkänen, Jorma. / NDE of the disposal canisters. Baltica IX. International Conference on Life Management and Maintenance for Power Plants. editor / Pertti Auerkari ; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. pp. 411-423 (VTT Technology; No. 106).
    @inproceedings{2559b854504442a2a96c76bb3e099203,
    title = "NDE of the disposal canisters",
    abstract = "The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.",
    author = "Ari Koskinen and Tarja J{\"a}ppinen and Matti Sarkimo and Aarne Lipponen and Jonne Haapalainen and Stefan Sandlin and Esa Leskel{\"a} and Jorma Pitk{\"a}nen",
    year = "2013",
    language = "English",
    isbn = "978-951-38-8025-5",
    series = "VTT Technology",
    publisher = "VTT Technical Research Centre of Finland",
    number = "106",
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    editor = "Pertti Auerkari and Juha Veivo",
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    Koskinen, A, Jäppinen, T, Sarkimo, M, Lipponen, A, Haapalainen, J, Sandlin, S, Leskelä, E & Pitkänen, J 2013, NDE of the disposal canisters. in P Auerkari & J Veivo (eds), Baltica IX. International Conference on Life Management and Maintenance for Power Plants. VTT Technical Research Centre of Finland, Espoo, VTT Technology, no. 106, pp. 411-423, BALTICA IX - International Conference on Life Management and Maintenance for Power Plants, Helsinki-Stockholm, Finland, 11/06/13.

    NDE of the disposal canisters. / Koskinen, Ari; Jäppinen, Tarja; Sarkimo, Matti; Lipponen, Aarne; Haapalainen, Jonne; Sandlin, Stefan; Leskelä, Esa; Pitkänen, Jorma.

    Baltica IX. International Conference on Life Management and Maintenance for Power Plants. ed. / Pertti Auerkari; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. p. 411-423 (VTT Technology; No. 106).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - NDE of the disposal canisters

    AU - Koskinen, Ari

    AU - Jäppinen, Tarja

    AU - Sarkimo, Matti

    AU - Lipponen, Aarne

    AU - Haapalainen, Jonne

    AU - Sandlin, Stefan

    AU - Leskelä, Esa

    AU - Pitkänen, Jorma

    PY - 2013

    Y1 - 2013

    N2 - The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.

    AB - The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.

    M3 - Conference article in proceedings

    SN - 978-951-38-8025-5

    T3 - VTT Technology

    SP - 411

    EP - 423

    BT - Baltica IX. International Conference on Life Management and Maintenance for Power Plants

    A2 - Auerkari, Pertti

    A2 - Veivo, Juha

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Koskinen A, Jäppinen T, Sarkimo M, Lipponen A, Haapalainen J, Sandlin S et al. NDE of the disposal canisters. In Auerkari P, Veivo J, editors, Baltica IX. International Conference on Life Management and Maintenance for Power Plants. Espoo: VTT Technical Research Centre of Finland. 2013. p. 411-423. (VTT Technology; No. 106).