EPR Piping Material Study: Effects of Sampling Location and Temperature on Low Cycle Fatigue in Air

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

doi:10.1115/PVP2023-106439

EPR Piping Material Study: Effects of Sampling Location and Temperature on Low Cycle Fatigue in Air

Tommi Seppänen, Jouni Alhainen, Esko Arilahti, Jussi Solin, Rami Vanninen

Teollisuuden Voima Oyj

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

Abstract

Individual research projects often plan experimental test matrices using a restricted batch of materials to study fatigue phenomena and performance. Often the results of these studies are aggregated into databases of material behavior. However, many important scientific findings can be lost in such databases, where complex experimental results can be condensed to generalized tables containing few details. In some scenarios this aggregation and condensing of results in unable to adequately describe the original research. Dedicated research in Finland aims to support application of risk-informed inspection and LTO strategies, which benefit from addressing material-specific behavior in fatigue management. Initial experimental in-air fatigue results on stainless steel 12"schedule 140 Z2CND1812 N2 class 1 pipe material, which is representative for the EPR reactor in Olkiluoto, were reported in PVP2022-84007. This paper presents an update on continued experimental progress, focusing on material sampling location effects and influence of test temperature on in-air fatigue behavior.

Original language	English
Title of host publication	ASME 2023 Pressure Vessels & Piping Conference
Subtitle of host publication	Volume 1: Codes & Standards
Publisher	American Society of Mechanical Engineers (ASME)
Number of pages	7
ISBN (Electronic)	9780791887448
DOIs	https://doi.org/10.1115/PVP2023-106439
Publication status	Published - 2023
MoE publication type	A4 Article in a conference publication
Event	ASME 2023 Pressure Vessels and Piping Conference, PVP 2023 - Atlanta, Georgia, USA, Atlanta, United States Duration: 16 Jul 2023 → 21 Jul 2023

Conference

Conference	ASME 2023 Pressure Vessels and Piping Conference, PVP 2023
Country/Territory	United States
City	Atlanta
Period	16/07/23 → 21/07/23

Funding

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 provided direct funds for execution of this project. The authors wish to additionally thank Erkki Pulkkinen, retired from TVO, for his contributions towards this project.

Keywords

EPR
fatigue
stainless steel

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10.1115/PVP2023-106439

Cite this

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title = "EPR Piping Material Study: Effects of Sampling Location and Temperature on Low Cycle Fatigue in Air",

abstract = "Individual research projects often plan experimental test matrices using a restricted batch of materials to study fatigue phenomena and performance. Often the results of these studies are aggregated into databases of material behavior. However, many important scientific findings can be lost in such databases, where complex experimental results can be condensed to generalized tables containing few details. In some scenarios this aggregation and condensing of results in unable to adequately describe the original research. Dedicated research in Finland aims to support application of risk-informed inspection and LTO strategies, which benefit from addressing material-specific behavior in fatigue management. Initial experimental in-air fatigue results on stainless steel 12{"}schedule 140 Z2CND1812 N2 class 1 pipe material, which is representative for the EPR reactor in Olkiluoto, were reported in PVP2022-84007. This paper presents an update on continued experimental progress, focusing on material sampling location effects and influence of test temperature on in-air fatigue behavior.",

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

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Seppänen, T , Alhainen, J, Arilahti, E, Solin, J & Vanninen, R 2023, EPR Piping Material Study: Effects of Sampling Location and Temperature on Low Cycle Fatigue in Air. in ASME 2023 Pressure Vessels & Piping Conference: Volume 1: Codes & Standards., PVP2023-106439, American Society of Mechanical Engineers (ASME), ASME 2023 Pressure Vessels and Piping Conference, PVP 2023, Atlanta, United States, 16/07/23. https://doi.org/10.1115/PVP2023-106439

EPR Piping Material Study: Effects of Sampling Location and Temperature on Low Cycle Fatigue in Air. / Seppänen, Tommi ; Alhainen, Jouni; Arilahti, Esko et al.
ASME 2023 Pressure Vessels & Piping Conference: Volume 1: Codes & Standards. American Society of Mechanical Engineers (ASME), 2023. PVP2023-106439.

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

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T1 - EPR Piping Material Study

T2 - ASME 2023 Pressure Vessels and Piping Conference, PVP 2023

AU - Seppänen, Tommi

AU - Alhainen, Jouni

AU - Arilahti, Esko

AU - Solin, Jussi

AU - Vanninen, Rami

PY - 2023

Y1 - 2023

N2 - Individual research projects often plan experimental test matrices using a restricted batch of materials to study fatigue phenomena and performance. Often the results of these studies are aggregated into databases of material behavior. However, many important scientific findings can be lost in such databases, where complex experimental results can be condensed to generalized tables containing few details. In some scenarios this aggregation and condensing of results in unable to adequately describe the original research. Dedicated research in Finland aims to support application of risk-informed inspection and LTO strategies, which benefit from addressing material-specific behavior in fatigue management. Initial experimental in-air fatigue results on stainless steel 12"schedule 140 Z2CND1812 N2 class 1 pipe material, which is representative for the EPR reactor in Olkiluoto, were reported in PVP2022-84007. This paper presents an update on continued experimental progress, focusing on material sampling location effects and influence of test temperature on in-air fatigue behavior.

AB - Individual research projects often plan experimental test matrices using a restricted batch of materials to study fatigue phenomena and performance. Often the results of these studies are aggregated into databases of material behavior. However, many important scientific findings can be lost in such databases, where complex experimental results can be condensed to generalized tables containing few details. In some scenarios this aggregation and condensing of results in unable to adequately describe the original research. Dedicated research in Finland aims to support application of risk-informed inspection and LTO strategies, which benefit from addressing material-specific behavior in fatigue management. Initial experimental in-air fatigue results on stainless steel 12"schedule 140 Z2CND1812 N2 class 1 pipe material, which is representative for the EPR reactor in Olkiluoto, were reported in PVP2022-84007. This paper presents an update on continued experimental progress, focusing on material sampling location effects and influence of test temperature on in-air fatigue behavior.

KW - EPR

KW - fatigue

KW - stainless steel

UR - https://www.scopus.com/pages/publications/85179889812

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DO - 10.1115/PVP2023-106439

M3 - Conference article in proceedings

AN - SCOPUS:85179889812

BT - ASME 2023 Pressure Vessels & Piping Conference

PB - American Society of Mechanical Engineers (ASME)

Y2 - 16 July 2023 through 21 July 2023

ER -

EPR Piping Material Study: Effects of Sampling Location and Temperature on Low Cycle Fatigue in Air

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