Abstract
The main objective and mission of the ATLAS+ project was to develop advanced structural assessment tools to address the remaining technology gaps for the safe and long term operation of nuclear reactor pressure coolant boundary systems. ATLAS+ WP3 focused mainly on ductile tearing prediction for large defects in piping and associated components: Several approaches have been developed to accurately model the ductile tearing process and to take into account phenomena such as triaxiality effects, or the ability to predict large tearing in industrial components. These advanced models include local approach coupled models or advanced energetic approaches. Unfortunately, the application of these tools is currently rather limited to R&D expertise. However, because of the continuous progress in the performance of calculation tools and accumulated knowledge, in particular by members of the ATLAS+ consortium, these models can now be considered as relevant for application in the context of engineering assessments. WP3 was planned to Illustrate the implementation of these models for industrial applications through the interpretation of large scale mock-ups (with cracks in weld joints for some of them), Make recommendations for the implementation of the advanced models in engineering assessments, Correct data from the conventional engineering approach by developing a methodology to produce J-A curve suitable case by case, based on local approach models, Improve the tools, guidance and procedures for undertaking leak-before-break (LBB) assessments of piping components, particularly in relation to evaluating structural representative fracture toughness J-Resistance curves and the influence of weld residual stresses. To achieve these goals, WP3 was divided into 4 sub-WPs. This paper presents the progress of the work performed in each sub-WP after 48 months of activities.
| Original language | English |
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| Title of host publication | ASME 2022 Pressure Vessels & Piping Conference, PVP2022 |
| Publisher | American Society of Mechanical Engineers (ASME) |
| Volume | 4A |
| ISBN (Electronic) | 978-0-7918-8617-5 |
| DOIs | |
| 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 |
Funding
Authors thank all the contributors to this paper who could not be cited : -Myriam Bourgeois from CEA, Saclay, France ; -John Sharples from Jacobs, Warrington, UK ; -Tobias Bolinder from KIWA Inspecta, Stockholm, Sweden ; -Szavai Szabolcs from BZL, Miskolc, Hungary ; -Marta Alvaro Fernandez from TECNATOM, Madrid, Spain ; -Kiminobu Hojo, Kentarou Yoshimoto and Takatoshi Hirota from MHI, Tokyo, Japan ; -Frederic Blom and Marieke Hannink from NRG, Petten, Netherland ; -Frederic Perales and Mamadou Meite from IRSN, Cadarache, France ; -Oriol Costa Garrido, Nejc Kromar and Leon Cizelj from IJS, Ljiubljana, Slovenija ; - Yun-Jae Kim & Eui Kyun Park from Seoul University, South Korea. The project ATLAS+ (Advanced Structural Integrity Assessment Tools for Safe Long Term Operation) has received funding from the Euratom research and training programme 2014-2018 under the grant agreement No.: 754589. The project is jointly funded by the EU and individual partners. The authors thank the EU and all the ATLAS+ contributors for their support and contributions.
