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",
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language = "English",
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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).