Prevention of catastrophic failure of pressure vessels and piping: Comparison of experimental and computational results of the pressure vessel test HC2

Rauno Rintamaa, Heli Talja, Heikki Keinänen, Arja Saarenheimo

    Research output: Book/ReportReport

    Abstract

    The structural integrity assessment of pressure boundary components requires reliable knowledge of the relevant material parameters and valid, reliable analysis methods. To improve the accuracy and validity of the experimental and computational fracture assessment methods, a four year research programme on elastic-plastic fracture mechanics was performed during the years 1985-1989 under auspices of the Nordic Liaison Committee of Atomic Energy. The scope of the programme included the testing of small fracture mechanics specimens and full-scale pressure vessels in order to provide experimental data for the validation of stress and fracture mechanics analyses. The two main tests were conducted on a decommissioned reactor pressure vessel from an oil refinery plant. Before testing, axial flaws were produced along the inner surface of the vessel. After the first test, the vessel was repaired by welding using the temper-bead technique without postweld heat treatment. Residual stresses, which were measured during and after welding, influenced the fracture behaviour of the vessel causing a discrepancy between the actual rupture pressure and the estimated rupture pressure. The effect of welding residual stresses and material property variation on the fracture assessment of the second pressure vessel test has been studied. The results of the analysis are presented and compared to the experimental findings.
    Original languageEnglish
    Place of PublicationEspoo
    Number of pages36
    Publication statusPublished - 1990
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
    Number679
    ISSN0358-5077

    Fingerprint

    Pressure vessels
    Fracture mechanics
    Welding
    Residual stresses
    Testing
    Structural integrity
    Nuclear energy
    Materials properties
    Heat treatment
    Plastics
    Defects

    Keywords

    • fractures (materials)
    • fracture tests
    • computation
    • fracture properties
    • residual stress
    • pressure vessels

    Cite this

    Rintamaa, Rauno ; Talja, Heli ; Keinänen, Heikki ; Saarenheimo, Arja. / Prevention of catastrophic failure of pressure vessels and piping : Comparison of experimental and computational results of the pressure vessel test HC2. Espoo, 1990. 36 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 679).
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    abstract = "The structural integrity assessment of pressure boundary components requires reliable knowledge of the relevant material parameters and valid, reliable analysis methods. To improve the accuracy and validity of the experimental and computational fracture assessment methods, a four year research programme on elastic-plastic fracture mechanics was performed during the years 1985-1989 under auspices of the Nordic Liaison Committee of Atomic Energy. The scope of the programme included the testing of small fracture mechanics specimens and full-scale pressure vessels in order to provide experimental data for the validation of stress and fracture mechanics analyses. The two main tests were conducted on a decommissioned reactor pressure vessel from an oil refinery plant. Before testing, axial flaws were produced along the inner surface of the vessel. After the first test, the vessel was repaired by welding using the temper-bead technique without postweld heat treatment. Residual stresses, which were measured during and after welding, influenced the fracture behaviour of the vessel causing a discrepancy between the actual rupture pressure and the estimated rupture pressure. The effect of welding residual stresses and material property variation on the fracture assessment of the second pressure vessel test has been studied. The results of the analysis are presented and compared to the experimental findings.",
    keywords = "fractures (materials), fracture tests, computation, fracture properties, residual stress, pressure vessels",
    author = "Rauno Rintamaa and Heli Talja and Heikki Kein{\"a}nen and Arja Saarenheimo",
    year = "1990",
    language = "English",
    isbn = "951-38-3700-9",
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    Prevention of catastrophic failure of pressure vessels and piping : Comparison of experimental and computational results of the pressure vessel test HC2. / Rintamaa, Rauno; Talja, Heli; Keinänen, Heikki; Saarenheimo, Arja.

    Espoo, 1990. 36 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 679).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Prevention of catastrophic failure of pressure vessels and piping

    T2 - Comparison of experimental and computational results of the pressure vessel test HC2

    AU - Rintamaa, Rauno

    AU - Talja, Heli

    AU - Keinänen, Heikki

    AU - Saarenheimo, Arja

    PY - 1990

    Y1 - 1990

    N2 - The structural integrity assessment of pressure boundary components requires reliable knowledge of the relevant material parameters and valid, reliable analysis methods. To improve the accuracy and validity of the experimental and computational fracture assessment methods, a four year research programme on elastic-plastic fracture mechanics was performed during the years 1985-1989 under auspices of the Nordic Liaison Committee of Atomic Energy. The scope of the programme included the testing of small fracture mechanics specimens and full-scale pressure vessels in order to provide experimental data for the validation of stress and fracture mechanics analyses. The two main tests were conducted on a decommissioned reactor pressure vessel from an oil refinery plant. Before testing, axial flaws were produced along the inner surface of the vessel. After the first test, the vessel was repaired by welding using the temper-bead technique without postweld heat treatment. Residual stresses, which were measured during and after welding, influenced the fracture behaviour of the vessel causing a discrepancy between the actual rupture pressure and the estimated rupture pressure. The effect of welding residual stresses and material property variation on the fracture assessment of the second pressure vessel test has been studied. The results of the analysis are presented and compared to the experimental findings.

    AB - The structural integrity assessment of pressure boundary components requires reliable knowledge of the relevant material parameters and valid, reliable analysis methods. To improve the accuracy and validity of the experimental and computational fracture assessment methods, a four year research programme on elastic-plastic fracture mechanics was performed during the years 1985-1989 under auspices of the Nordic Liaison Committee of Atomic Energy. The scope of the programme included the testing of small fracture mechanics specimens and full-scale pressure vessels in order to provide experimental data for the validation of stress and fracture mechanics analyses. The two main tests were conducted on a decommissioned reactor pressure vessel from an oil refinery plant. Before testing, axial flaws were produced along the inner surface of the vessel. After the first test, the vessel was repaired by welding using the temper-bead technique without postweld heat treatment. Residual stresses, which were measured during and after welding, influenced the fracture behaviour of the vessel causing a discrepancy between the actual rupture pressure and the estimated rupture pressure. The effect of welding residual stresses and material property variation on the fracture assessment of the second pressure vessel test has been studied. The results of the analysis are presented and compared to the experimental findings.

    KW - fractures (materials)

    KW - fracture tests

    KW - computation

    KW - fracture properties

    KW - residual stress

    KW - pressure vessels

    M3 - Report

    SN - 951-38-3700-9

    T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

    BT - Prevention of catastrophic failure of pressure vessels and piping

    CY - Espoo

    ER -

    Rintamaa R, Talja H, Keinänen H, Saarenheimo A. Prevention of catastrophic failure of pressure vessels and piping: Comparison of experimental and computational results of the pressure vessel test HC2. Espoo, 1990. 36 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 679).