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| NKS Programme Area: | NKS-R | | Research Area: | Plant life manegement and extension | | Report Number: | NKS-497 | | Report Title: | Reactor Pressure Vessel LTO Assessment | | Activity Acronym: | REPoUSSES | | Authors: | Pål Efsing, Jonas Faleskog, Daniela Klein, Noora Hytönen, Sebastian Lindqvist, Mattias Thuvander, David Mayweg, Johan Blomström, | | Abstract: | As part of the NKS-R program, VTT, Chalmers University of
Technology and KTH have extended the assessment of micro-structural and mechanical property evolution during irradiation to analyze the as-aged material properties of the retired reactor pressure vessel, RPV, from Barsebäck unit 2. The testing has included impact and fracture mechanical testing of material, as well as high and low magnification microstructural characterization of the weld metal from the reactor pressure vessel using LOM, SEM and APT. Due to the nature of the work, the NKS-project is connected to several adjacent activities, including support from the Finnish Nuclear Safety Program, the SAFIR-program, the Swedish Radiation Safety Authority SSM and Swedish Centre for Nuclear Technology, and SKC. | | Keywords: | Low alloy steel, irradiation effects, fracture toughness, ductile to brittle transition temperature, constraint effects, high resolution microscopy, microstructural characterization | | Publication date: | 24 Mar 2025 | | ISBN: | 978-87-7893-595-3 | | Number of downloads: | 32 | | Download: |  NKS-497.pdf |
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