Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants

Otso Cronvall, Arja Saarenheimo, Kaisa Simola, Heli Talja

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

    Abstract

    Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.
    Original languageEnglish
    Title of host publicationProceedings of the 25th ESReDA Seminar
    Number of pages13
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    EventESReDA 25th Seminar: Lifetime Management of Structures - Paris, France
    Duration: 17 Nov 200319 Nov 2003

    Seminar

    SeminarESReDA 25th Seminar
    CountryFrance
    CityParis
    Period17/11/0319/11/03

    Fingerprint

    Nuclear power plants
    Inspection
    Pipe
    Availability
    Statistical Models

    Keywords

    • risk analysis
    • RI-ISI
    • probability
    • fracture mechanics
    • database
    • analysis code
    • NPP
    • piping

    Cite this

    @inproceedings{0a6d1d731c0c49768f4bb72ff741f781,
    title = "Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants",
    abstract = "Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.",
    keywords = "risk analysis, RI-ISI, probability, fracture mechanics, database, analysis code, NPP, piping",
    author = "Otso Cronvall and Arja Saarenheimo and Kaisa Simola and Heli Talja",
    year = "2003",
    language = "English",
    isbn = "92-894-9998-2",
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    Cronvall, O, Saarenheimo, A, Simola, K & Talja, H 2003, Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants. in Proceedings of the 25th ESReDA Seminar. ESReDA 25th Seminar, Paris, France, 17/11/03.

    Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants. / Cronvall, Otso; Saarenheimo, Arja; Simola, Kaisa; Talja, Heli.

    Proceedings of the 25th ESReDA Seminar. 2003.

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

    TY - GEN

    T1 - Approaches to estimate pipe failure rates for risk-informed in-service applications at nuclear power plants

    AU - Cronvall, Otso

    AU - Saarenheimo, Arja

    AU - Simola, Kaisa

    AU - Talja, Heli

    PY - 2003

    Y1 - 2003

    N2 - Piping failure frequencies are needed e.g. for quantifying initiating event frequencies in probabilistic safety assessments (PSA), and for the application of quantitative risk-informed in-service inspection methodology. The paper summaries different approaches to estimate failure frequencies of piping at nuclear power plants (NPPs). These approaches are the use of structural reliability models, statistical estimation from operating experience data and the use of expert judgement for probability statements based on e.g. deterministic analyses. We illustrate the use of these approaches with a simple example. Further we discuss what kind of input data is needed and evaluate their availability.

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    KW - risk analysis

    KW - RI-ISI

    KW - probability

    KW - fracture mechanics

    KW - database

    KW - analysis code

    KW - NPP

    KW - piping

    M3 - Conference article in proceedings

    SN - 92-894-9998-2

    BT - Proceedings of the 25th ESReDA Seminar

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