EPR Piping Material Study:  Basic Characterization and Low Cycle Fatigue at Room Temperature

Tommi Seppänen; Jouni Alhainen; Esko Arilahti; Jussi Solin; Rami Vanninen; Erkki Pulkkinen

doi:10.1115/PVP2022-84007

EPR Piping Material Study: Basic Characterization and Low Cycle Fatigue at Room Temperature

Tommi Seppänen^*, Jouni Alhainen, Esko Arilahti, Jussi Solin, Rami Vanninen, Erkki Pulkkinen

^*Corresponding author for this work

BA4510 Fatigue and fracture mechanics

Teollisuuden Voima Oyj

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

Abstract

The 1963 ASME Section III design fatigue curve was generically applicable to a range of stainless steels in low cycle fatigue. In high cycle fatigue the behavior is sensitive to factors such as material strength, which raises questions about the applicability of the post-2009 ASME III stainless steel design fatigue curve as the generic and mandatory requirement up to 10¹¹ cycles. In response, international codes and standards are investigating and incorporating opportunities for alternative design curves. Long-term Finnish research supports and application of risk-informed inspection and long-term operation strategies benefit from addressing material-specific behavior in fatigue management. In the ongoing study, stainless steel material batches representative of the EPR reactor in Olkiluoto have been selected for experimental fatigue research. This paper presents the first results on a 12” schedule 140 Z2CND1812 N2 Class 1 pipe, including tensile properties and low cycle fatigue at room temperature.

Original language	English
Title of host publication	ASME 2022 Pressure Vessels & Piping Conference
Publisher	American Society of Mechanical Engineers (ASME)
Number of pages	6
Volume	1
ISBN (Electronic)	978-0-7918-8614-4
DOIs	https://doi.org/10.1115/PVP2022-84007
Publication status	Published - 2022
MoE publication type	A4 Article in a conference publication
Event	ASME 2022 Pressure Vessels and Piping Conference, PVP 2022 - Las Vegas, United States Duration: 17 Jul 2022 → 22 Jul 2022

Conference

Conference	ASME 2022 Pressure Vessels and Piping Conference, PVP 2022
Country/Territory	United States
City	Las Vegas
Period	17/07/22 → 22/07/22

Keywords

EPR
fatigue
stainless steel

Access to Document

10.1115/PVP2022-84007

Cite this

@inproceedings{8762d350146b4a19b0b50c995ca492c4,

title = "EPR Piping Material Study: Basic Characterization and Low Cycle Fatigue at Room Temperature",

abstract = "The 1963 ASME Section III design fatigue curve was generically applicable to a range of stainless steels in low cycle fatigue. In high cycle fatigue the behavior is sensitive to factors such as material strength, which raises questions about the applicability of the post-2009 ASME III stainless steel design fatigue curve as the generic and mandatory requirement up to 1011 cycles. In response, international codes and standards are investigating and incorporating opportunities for alternative design curves. Long-term Finnish research supports and application of risk-informed inspection and long-term operation strategies benefit from addressing material-specific behavior in fatigue management. In the ongoing study, stainless steel material batches representative of the EPR reactor in Olkiluoto have been selected for experimental fatigue research. This paper presents the first results on a 12” schedule 140 Z2CND1812 N2 Class 1 pipe, including tensile properties and low cycle fatigue at room temperature.",

keywords = "EPR, fatigue, stainless steel",

author = "Tommi Sepp{\"a}nen and Jouni Alhainen and Esko Arilahti and Jussi Solin and Rami Vanninen and Erkki Pulkkinen",

note = "Funding Information: This work is part of the FatiMa project “Fatigue Management for LTO”, a sub-project of the Finnish Research Programme on Nuclear Power Plant Safety 2019-2022 (SAFIR2022). In addition to the generic program funding, Fortum and TVO provide also direct funds for execution of this project. Publisher Copyright: Copyright {\textcopyright} 2022 by ASME.; ASME 2022 Pressure Vessels and Piping Conference, PVP 2022 ; Conference date: 17-07-2022 Through 22-07-2022",

year = "2022",

doi = "10.1115/PVP2022-84007",

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booktitle = "ASME 2022 Pressure Vessels & Piping Conference",

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}

Seppänen, T , Alhainen, J, Arilahti, E, Solin, J, Vanninen, R & Pulkkinen, E 2022, EPR Piping Material Study: Basic Characterization and Low Cycle Fatigue at Room Temperature. in ASME 2022 Pressure Vessels & Piping Conference. vol. 1, PVP2022-84007, American Society of Mechanical Engineers (ASME), ASME 2022 Pressure Vessels and Piping Conference, PVP 2022, Las Vegas, United States, 17/07/22. https://doi.org/10.1115/PVP2022-84007

EPR Piping Material Study: Basic Characterization and Low Cycle Fatigue at Room Temperature. / Seppänen, Tommi ; Alhainen, Jouni; Arilahti, Esko et al.
ASME 2022 Pressure Vessels & Piping Conference. Vol. 1 American Society of Mechanical Engineers (ASME), 2022. PVP2022-84007.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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AU - Alhainen, Jouni

AU - Arilahti, Esko

AU - Solin, Jussi

AU - Vanninen, Rami

AU - Pulkkinen, Erkki

N1 - Funding Information: This work is part of the FatiMa project “Fatigue Management for LTO”, a sub-project of the Finnish Research Programme on Nuclear Power Plant Safety 2019-2022 (SAFIR2022). In addition to the generic program funding, Fortum and TVO provide also direct funds for execution of this project. Publisher Copyright: Copyright © 2022 by ASME.

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N2 - The 1963 ASME Section III design fatigue curve was generically applicable to a range of stainless steels in low cycle fatigue. In high cycle fatigue the behavior is sensitive to factors such as material strength, which raises questions about the applicability of the post-2009 ASME III stainless steel design fatigue curve as the generic and mandatory requirement up to 1011 cycles. In response, international codes and standards are investigating and incorporating opportunities for alternative design curves. Long-term Finnish research supports and application of risk-informed inspection and long-term operation strategies benefit from addressing material-specific behavior in fatigue management. In the ongoing study, stainless steel material batches representative of the EPR reactor in Olkiluoto have been selected for experimental fatigue research. This paper presents the first results on a 12” schedule 140 Z2CND1812 N2 Class 1 pipe, including tensile properties and low cycle fatigue at room temperature.

AB - The 1963 ASME Section III design fatigue curve was generically applicable to a range of stainless steels in low cycle fatigue. In high cycle fatigue the behavior is sensitive to factors such as material strength, which raises questions about the applicability of the post-2009 ASME III stainless steel design fatigue curve as the generic and mandatory requirement up to 1011 cycles. In response, international codes and standards are investigating and incorporating opportunities for alternative design curves. Long-term Finnish research supports and application of risk-informed inspection and long-term operation strategies benefit from addressing material-specific behavior in fatigue management. In the ongoing study, stainless steel material batches representative of the EPR reactor in Olkiluoto have been selected for experimental fatigue research. This paper presents the first results on a 12” schedule 140 Z2CND1812 N2 Class 1 pipe, including tensile properties and low cycle fatigue at room temperature.

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