Environmental fatigue management for long time operation: Finnish point of view

Jussi Solin (Corresponding author), Tommi Seppänen, Petri Lemettinen, Juha Isometsä, Erkki Pulkkinen

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

    Abstract

    Accounting for environmental effects in fatigue has long been a necessity in Finland. This requirement was placed into the national regulatory guides in 2002 and the regulatory body, Radiation and Nuclear Safety Authority (STUK) required the license holders of operating reactors to respond by 2004. At that time, the international state-of-the-art was reviewed and found not mature. However, reasonable approaches for accounting environmental effects were developed and adopted by both utilities, Fortum and TVO. Adoption of the proposed new design curves was considered impractical and calculation of Fen factors was preferred. This placed the Finnish utilities among the first industries, who brought environment assisted fatigue (EAF) into practice. At the same time, fatigue design of the new EPR design (OL3) was also subject of the requirement. The experimental work and approaches developed by Areva have been widely discussed in previous PVP Conferences. A high number of PVP papers in these'ENVIRONMENTAL FATIGUE ISSUES' sessions reveals that work remains to be done before the state-of-the-art in EAF is mature and an international consensus can be reached. Follow-up of evolving state-of-the-art is a part of the safety culture for Finnish utilities and regulator. Therefore, we encourage the researchers and engineers together to find solutions, which can be justified by sound arguments and brought into practice to reduce confusion and bias in fatigue management.

    Original languageEnglish
    Title of host publicationASME 2019 Pressure Vessels and Piping Conference, PVP 2019
    Subtitle of host publicationCodes and Standards
    PublisherAmerican Society of Mechanical Engineers ASME
    Number of pages5
    Volume1
    ISBN (Electronic)978-0-7918-5892-9
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA4 Article in a conference publication
    EventASME 2019 Pressure Vessels and Piping Conference, PVP 2019 - San Antonio, United States
    Duration: 14 Jul 201919 Jul 2019

    Conference

    ConferenceASME 2019 Pressure Vessels and Piping Conference, PVP 2019
    CountryUnited States
    CitySan Antonio
    Period14/07/1919/07/19

    Fingerprint

    Fatigue of materials
    Environmental impact
    Paramagnetic resonance
    Acoustic waves
    Radiation
    Engineers
    Industry

    Keywords

    • Codes and standards
    • Design
    • Environmental fatigue
    • Fatigue
    • Nuclear reactor

    Cite this

    Solin, J., Seppänen, T., Lemettinen, P., Isometsä, J., & Pulkkinen, E. (2019). Environmental fatigue management for long time operation: Finnish point of view. In ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards (Vol. 1). [PVP2019-94015] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2019-94015
    Solin, Jussi ; Seppänen, Tommi ; Lemettinen, Petri ; Isometsä, Juha ; Pulkkinen, Erkki. / Environmental fatigue management for long time operation : Finnish point of view. ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. Vol. 1 American Society of Mechanical Engineers ASME, 2019.
    @inproceedings{36464a3f3dd041ca91e56368ea8e48d1,
    title = "Environmental fatigue management for long time operation: Finnish point of view",
    abstract = "Accounting for environmental effects in fatigue has long been a necessity in Finland. This requirement was placed into the national regulatory guides in 2002 and the regulatory body, Radiation and Nuclear Safety Authority (STUK) required the license holders of operating reactors to respond by 2004. At that time, the international state-of-the-art was reviewed and found not mature. However, reasonable approaches for accounting environmental effects were developed and adopted by both utilities, Fortum and TVO. Adoption of the proposed new design curves was considered impractical and calculation of Fen factors was preferred. This placed the Finnish utilities among the first industries, who brought environment assisted fatigue (EAF) into practice. At the same time, fatigue design of the new EPR design (OL3) was also subject of the requirement. The experimental work and approaches developed by Areva have been widely discussed in previous PVP Conferences. A high number of PVP papers in these'ENVIRONMENTAL FATIGUE ISSUES' sessions reveals that work remains to be done before the state-of-the-art in EAF is mature and an international consensus can be reached. Follow-up of evolving state-of-the-art is a part of the safety culture for Finnish utilities and regulator. Therefore, we encourage the researchers and engineers together to find solutions, which can be justified by sound arguments and brought into practice to reduce confusion and bias in fatigue management.",
    keywords = "Codes and standards, Design, Environmental fatigue, Fatigue, Nuclear reactor",
    author = "Jussi Solin and Tommi Sepp{\"a}nen and Petri Lemettinen and Juha Isomets{\"a} and Erkki Pulkkinen",
    year = "2019",
    doi = "10.1115/PVP2019-94015",
    language = "English",
    volume = "1",
    booktitle = "ASME 2019 Pressure Vessels and Piping Conference, PVP 2019",
    publisher = "American Society of Mechanical Engineers ASME",
    address = "United States",

    }

    Solin, J, Seppänen, T, Lemettinen, P, Isometsä, J & Pulkkinen, E 2019, Environmental fatigue management for long time operation: Finnish point of view. in ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. vol. 1, PVP2019-94015, American Society of Mechanical Engineers ASME, ASME 2019 Pressure Vessels and Piping Conference, PVP 2019, San Antonio, United States, 14/07/19. https://doi.org/10.1115/PVP2019-94015

    Environmental fatigue management for long time operation : Finnish point of view. / Solin, Jussi (Corresponding author); Seppänen, Tommi; Lemettinen, Petri; Isometsä, Juha; Pulkkinen, Erkki.

    ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. Vol. 1 American Society of Mechanical Engineers ASME, 2019. PVP2019-94015.

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

    TY - GEN

    T1 - Environmental fatigue management for long time operation

    T2 - Finnish point of view

    AU - Solin, Jussi

    AU - Seppänen, Tommi

    AU - Lemettinen, Petri

    AU - Isometsä, Juha

    AU - Pulkkinen, Erkki

    PY - 2019

    Y1 - 2019

    N2 - Accounting for environmental effects in fatigue has long been a necessity in Finland. This requirement was placed into the national regulatory guides in 2002 and the regulatory body, Radiation and Nuclear Safety Authority (STUK) required the license holders of operating reactors to respond by 2004. At that time, the international state-of-the-art was reviewed and found not mature. However, reasonable approaches for accounting environmental effects were developed and adopted by both utilities, Fortum and TVO. Adoption of the proposed new design curves was considered impractical and calculation of Fen factors was preferred. This placed the Finnish utilities among the first industries, who brought environment assisted fatigue (EAF) into practice. At the same time, fatigue design of the new EPR design (OL3) was also subject of the requirement. The experimental work and approaches developed by Areva have been widely discussed in previous PVP Conferences. A high number of PVP papers in these'ENVIRONMENTAL FATIGUE ISSUES' sessions reveals that work remains to be done before the state-of-the-art in EAF is mature and an international consensus can be reached. Follow-up of evolving state-of-the-art is a part of the safety culture for Finnish utilities and regulator. Therefore, we encourage the researchers and engineers together to find solutions, which can be justified by sound arguments and brought into practice to reduce confusion and bias in fatigue management.

    AB - Accounting for environmental effects in fatigue has long been a necessity in Finland. This requirement was placed into the national regulatory guides in 2002 and the regulatory body, Radiation and Nuclear Safety Authority (STUK) required the license holders of operating reactors to respond by 2004. At that time, the international state-of-the-art was reviewed and found not mature. However, reasonable approaches for accounting environmental effects were developed and adopted by both utilities, Fortum and TVO. Adoption of the proposed new design curves was considered impractical and calculation of Fen factors was preferred. This placed the Finnish utilities among the first industries, who brought environment assisted fatigue (EAF) into practice. At the same time, fatigue design of the new EPR design (OL3) was also subject of the requirement. The experimental work and approaches developed by Areva have been widely discussed in previous PVP Conferences. A high number of PVP papers in these'ENVIRONMENTAL FATIGUE ISSUES' sessions reveals that work remains to be done before the state-of-the-art in EAF is mature and an international consensus can be reached. Follow-up of evolving state-of-the-art is a part of the safety culture for Finnish utilities and regulator. Therefore, we encourage the researchers and engineers together to find solutions, which can be justified by sound arguments and brought into practice to reduce confusion and bias in fatigue management.

    KW - Codes and standards

    KW - Design

    KW - Environmental fatigue

    KW - Fatigue

    KW - Nuclear reactor

    UR - http://www.scopus.com/inward/record.url?scp=85075827293&partnerID=8YFLogxK

    U2 - 10.1115/PVP2019-94015

    DO - 10.1115/PVP2019-94015

    M3 - Conference article in proceedings

    AN - SCOPUS:85075827293

    VL - 1

    BT - ASME 2019 Pressure Vessels and Piping Conference, PVP 2019

    PB - American Society of Mechanical Engineers ASME

    ER -

    Solin J, Seppänen T, Lemettinen P, Isometsä J, Pulkkinen E. Environmental fatigue management for long time operation: Finnish point of view. In ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. Vol. 1. American Society of Mechanical Engineers ASME. 2019. PVP2019-94015 https://doi.org/10.1115/PVP2019-94015