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

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

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 languageEnglish
Title of host publicationASME 2022 Pressure Vessels & Piping Conference
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages6
Volume1
ISBN (Electronic)978-0-7918-8614-4
DOIs
Publication statusPublished - 2022
MoE publication typeA4 Article in a conference publication
EventASME 2022 Pressure Vessels and Piping Conference, PVP 2022 - Las Vegas, United States
Duration: 17 Jul 202222 Jul 2022

Conference

ConferenceASME 2022 Pressure Vessels and Piping Conference, PVP 2022
Country/TerritoryUnited States
CityLas Vegas
Period17/07/2222/07/22

Keywords

  • EPR
  • fatigue
  • stainless steel

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