Structural MATerias research on parameters influencing the material properties of RPV steels for safe long-term operation of PWR NPPs

M. Kolluri; O. Martin; F. Naziris; E. D'Agata; F. Gillemot; M. Brumovsky; A. Ulbricht; Juha-Matti Autio; O. Shugailo; A. Horvath

doi:10.1016/j.nucengdes.2023.112236

Structural MATerias research on parameters influencing the material properties of RPV steels for safe long-term operation of PWR NPPs

M. Kolluri^*
, O. Martin
, F. Naziris
, E. D'Agata
, F. Gillemot
, M. Brumovsky
, A. Ulbricht
, Juha-Matti Autio
, O. Shugailo
, A. Horvath

^*Corresponding author for this work

Nuclear Research and Consultancy Group (NRG)
European Commission
Hungarian Academy of Sciences Centre for Energy Research (mtaEK)
ÚJV Řež a.s.
Helmholtz Centre Dresden-Rossendorf (HZDR)
State Scientific and Technical Center for Nuclear and Radiation Safety (SSTC NRS)

Research output: Contribution to journal › Review Article › peer-review

18 Citations (Scopus)

Abstract

This article provides a comprehensive overview of the STRUMAT-LTO project. Embrittlement of the reactor pressure vessel (RPV) due to neutron irradiation and high temperature conditions impose critical challenges for long-term operation (LTO) of pressurized water reactors (PWRs). Significant amount of past research conducted on RPV ageing phenomena has helped to enhance the understanding of the flux effect and the impact of chemical/microstructural heterogeneities on RPV embrittlement. Nonetheless, several unresolved questions regarding RPV embrittlement persist, such as the conflicting viewpoints on the underlying mechanisms that lead to accelerated embrittlement at high fluence conditions in certain low-copper (Cu) RPV steels and the synergistic effect between nickel, manganese, and silicon (Ni-Mn-Si). Also, the accuracy of embrittlement trend curves (ETCs) for LTO beyond 60 years and the applicability of the master curve approach at high fluences for small/sub-sized specimens require further study. The aim of the STRUMAT-LTO is to address the above-mentioned scientific gaps in RPV embrittlement by employing a unique set of RPV steel specimens constituting systematic variations in Ni, Mn, and Si content, which are irradiated to high fluences resembling reactor operation beyond 60 years within the LYRA-10 experiment at high flux reactor (HFR) in Petten. The STRUMAT-LTO project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n°945272. The project has a duration of 48 months.

Original language	English
Article number	112236
Number of pages	7
Journal	Nuclear Engineering and Design
Volume	406
DOIs	https://doi.org/10.1016/j.nucengdes.2023.112236
Publication status	Published - May 2023
MoE publication type	A2 Review article in a scientific journal

Funding

The research reported in the project is performed within the framework of the STRUMAT-LTO project. This project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n◦ 945272. The work performed at NRG is co-funded by the Dutch Ministry of Economic Affairs (EZS). The contribution of all partners in the STRUMAT-LTO project is acknowledged. The content within this document is classified with the code EU DuC = X. EU DuC means European dual use code. The research reported in the project is performed within the framework of the STRUMAT-LTO project. This project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n◦ 945272. The work performed at NRG is co-funded by the Dutch Ministry of Economic Affairs (EZS). The contribution of all partners in the STRUMAT-LTO project is acknowledged.

Keywords

Embrittlement trent curves
HFR
Long term operation
LWRs
LYRA-10
mini-CT
RPV embrittlement
STRUMAT-LTO

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10.1016/j.nucengdes.2023.112236

Cite this

Kolluri, M., Martin, O., Naziris, F., D'Agata, E., Gillemot, F., Brumovsky, M., Ulbricht, A., Autio, J.-M., Shugailo, O., & Horvath, A. (2023). Structural MATerias research on parameters influencing the material properties of RPV steels for safe long-term operation of PWR NPPs. Nuclear Engineering and Design, 406, Article 112236. https://doi.org/10.1016/j.nucengdes.2023.112236

@article{f921193a28d0472f8098285067ec7baf,

title = "Structural MATerias research on parameters influencing the material properties of RPV steels for safe long-term operation of PWR NPPs",

abstract = "This article provides a comprehensive overview of the STRUMAT-LTO project. Embrittlement of the reactor pressure vessel (RPV) due to neutron irradiation and high temperature conditions impose critical challenges for long-term operation (LTO) of pressurized water reactors (PWRs). Significant amount of past research conducted on RPV ageing phenomena has helped to enhance the understanding of the flux effect and the impact of chemical/microstructural heterogeneities on RPV embrittlement. Nonetheless, several unresolved questions regarding RPV embrittlement persist, such as the conflicting viewpoints on the underlying mechanisms that lead to accelerated embrittlement at high fluence conditions in certain low-copper (Cu) RPV steels and the synergistic effect between nickel, manganese, and silicon (Ni-Mn-Si). Also, the accuracy of embrittlement trend curves (ETCs) for LTO beyond 60 years and the applicability of the master curve approach at high fluences for small/sub-sized specimens require further study. The aim of the STRUMAT-LTO is to address the above-mentioned scientific gaps in RPV embrittlement by employing a unique set of RPV steel specimens constituting systematic variations in Ni, Mn, and Si content, which are irradiated to high fluences resembling reactor operation beyond 60 years within the LYRA-10 experiment at high flux reactor (HFR) in Petten. The STRUMAT-LTO project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n°945272. The project has a duration of 48 months.",

keywords = "Embrittlement trent curves, HFR, Long term operation, LWRs, LYRA-10, mini-CT, RPV embrittlement, STRUMAT-LTO",

author = "M. Kolluri and O. Martin and F. Naziris and E. D'Agata and F. Gillemot and M. Brumovsky and A. Ulbricht and Juha-Matti Autio and O. Shugailo and A. Horvath",

note = "Funding Information: The research reported in the project is performed within the framework of the STRUMAT-LTO project. This project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n◦ 945272. The work performed at NRG is co-funded by the Dutch Ministry of Economic Affairs (EZS). The contribution of all partners in the STRUMAT-LTO project is acknowledged. The content within this document is classified with the code EU DuC = X. EU DuC means European dual use code. ",

year = "2023",

month = may,

doi = "10.1016/j.nucengdes.2023.112236",

language = "English",

volume = "406",

journal = "Nuclear Engineering and Design",

issn = "0029-5493",

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TY - JOUR

T1 - Structural MATerias research on parameters influencing the material properties of RPV steels for safe long-term operation of PWR NPPs

AU - Kolluri, M.

AU - Martin, O.

AU - Naziris, F.

AU - D'Agata, E.

AU - Gillemot, F.

AU - Brumovsky, M.

AU - Ulbricht, A.

AU - Autio, Juha-Matti

AU - Shugailo, O.

AU - Horvath, A.

N1 - Funding Information: The research reported in the project is performed within the framework of the STRUMAT-LTO project. This project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n◦ 945272. The work performed at NRG is co-funded by the Dutch Ministry of Economic Affairs (EZS). The contribution of all partners in the STRUMAT-LTO project is acknowledged. The content within this document is classified with the code EU DuC = X. EU DuC means European dual use code.

PY - 2023/5

Y1 - 2023/5

N2 - This article provides a comprehensive overview of the STRUMAT-LTO project. Embrittlement of the reactor pressure vessel (RPV) due to neutron irradiation and high temperature conditions impose critical challenges for long-term operation (LTO) of pressurized water reactors (PWRs). Significant amount of past research conducted on RPV ageing phenomena has helped to enhance the understanding of the flux effect and the impact of chemical/microstructural heterogeneities on RPV embrittlement. Nonetheless, several unresolved questions regarding RPV embrittlement persist, such as the conflicting viewpoints on the underlying mechanisms that lead to accelerated embrittlement at high fluence conditions in certain low-copper (Cu) RPV steels and the synergistic effect between nickel, manganese, and silicon (Ni-Mn-Si). Also, the accuracy of embrittlement trend curves (ETCs) for LTO beyond 60 years and the applicability of the master curve approach at high fluences for small/sub-sized specimens require further study. The aim of the STRUMAT-LTO is to address the above-mentioned scientific gaps in RPV embrittlement by employing a unique set of RPV steel specimens constituting systematic variations in Ni, Mn, and Si content, which are irradiated to high fluences resembling reactor operation beyond 60 years within the LYRA-10 experiment at high flux reactor (HFR) in Petten. The STRUMAT-LTO project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n°945272. The project has a duration of 48 months.

AB - This article provides a comprehensive overview of the STRUMAT-LTO project. Embrittlement of the reactor pressure vessel (RPV) due to neutron irradiation and high temperature conditions impose critical challenges for long-term operation (LTO) of pressurized water reactors (PWRs). Significant amount of past research conducted on RPV ageing phenomena has helped to enhance the understanding of the flux effect and the impact of chemical/microstructural heterogeneities on RPV embrittlement. Nonetheless, several unresolved questions regarding RPV embrittlement persist, such as the conflicting viewpoints on the underlying mechanisms that lead to accelerated embrittlement at high fluence conditions in certain low-copper (Cu) RPV steels and the synergistic effect between nickel, manganese, and silicon (Ni-Mn-Si). Also, the accuracy of embrittlement trend curves (ETCs) for LTO beyond 60 years and the applicability of the master curve approach at high fluences for small/sub-sized specimens require further study. The aim of the STRUMAT-LTO is to address the above-mentioned scientific gaps in RPV embrittlement by employing a unique set of RPV steel specimens constituting systematic variations in Ni, Mn, and Si content, which are irradiated to high fluences resembling reactor operation beyond 60 years within the LYRA-10 experiment at high flux reactor (HFR) in Petten. The STRUMAT-LTO project has received funding from the Euratom research and training programme 2019–2020 under grant agreement n°945272. The project has a duration of 48 months.

KW - Embrittlement trent curves

KW - HFR

KW - Long term operation

KW - LWRs

KW - LYRA-10

KW - mini-CT

KW - RPV embrittlement

KW - STRUMAT-LTO

UR - https://www.scopus.com/pages/publications/85149728142

U2 - 10.1016/j.nucengdes.2023.112236

DO - 10.1016/j.nucengdes.2023.112236

M3 - Review Article

AN - SCOPUS:85149728142

SN - 0029-5493

VL - 406

JO - Nuclear Engineering and Design

JF - Nuclear Engineering and Design

M1 - 112236

ER -

Structural MATerias research on parameters influencing the material properties of RPV steels for safe long-term operation of PWR NPPs

Abstract

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Keywords

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