Results 11 to 20 of about 2,735 (205)

Integrity Evaluation of a Reactor Pressure Vessel Based on a Sequential Abaqus-FRANC3D Simulation Method

open access: yesScience and Technology of Nuclear Installations, 2021
The safety-risk pressurized thermal shock (PTS) have on a reactor pressure vessel (RPV) is one of the most important studies for the lifetime ageing management of a reactor.
M. Annor-Nyarko, Hong Xia
doaj   +1 more source

Non-hardening embrittlement mechanism of pressure vessel steel Ni-Cr-Mo-V welds during thermal aging

open access: yesAdvances in Mechanical Engineering, 2020
The mechanical performance of reactor pressure vessel materials is an important factor in the safety and economics of the operation of a nuclear power plant.
Guojun Wei   +4 more
doaj   +1 more source

Predictions and uncertainty estimates of reactor pressure vessel steel embrittlement using Machine learning

open access: yesMaterials & Design, 2023
An essential aspect of extending safe operation of the world’s active nuclear reactors is understanding and predicting the embrittlement that occurs in the steels that make up the Reactor pressure vessel (RPV).
Ryan Jacobs   +3 more
doaj   +1 more source

Analysis of Surface Roughness Influence in Non-Destructive Magnetic Measurements Applied to Reactor Pressure Vessel Steels

open access: yesApplied Sciences, 2020
The influence of surface roughness on magnetic measurements of Reactor Pressure Vessel Steels was investigated by applying two types of magnetic, non-destructive measurement on nuclear reactor pressure vessel steel samples: magnetic adaptive testing (MAT)
Gábor Vértesy   +5 more
doaj   +1 more source

Machine-Learning Approach to Determine Surface Quality on a Reactor Pressure Vessel (RPV) Steel

open access: yesApplied Sciences, 2022
Surface quality measures such as roughness, and especially its uncertain character, affect most magnetic non-destructive testing methods and limits their performance in terms of an achievable signal-to-noise ratio and reliability. This paper is primarily
James M. Griffin   +6 more
doaj   +1 more source

Microstructure Evolution of Reactor Pressure Vessel A508-3 Steel under High-Dose Heavy Ion Irradiation

open access: yesCrystals, 2022
The microstructure evolution of nuclear reactor pressure vessel A508-3 steel irradiated by heavy ions up to 1.5 dpa was studied by transmission electron microscopy (TEM). According to the TEM analysis, black dots were widely distributed in the irradiated
Xianfeng Ma   +5 more
doaj   +1 more source

Development of fracture toughness curve for PTS evaluation of reactor pressure vessels incorporating Master curve concept

open access: yesNihon Kikai Gakkai ronbunshu, 2019
The reactor pressure vessel is made of ferritic low alloy steel, which has fracture behaviors that include ductile to brittle transition temperature and decrease of fracture toughness in the beltline region of the reactor pressure vessel steel due to ...
Takatoshi HIROTA, Kentaro YOSHIMOTO
doaj   +1 more source

Normalizing treatment influence on the forged steel SAE 8620 fracture properties

open access: yesMaterials Research, 2005
In a PWR nuclear power plant, the reactor pressure vessel (RPV) contains the fuel assemblies and reactor vessels internals and keeps the coolant at high temperature and high pressure during normal operation.
Paulo de Tarso Vida Gomes   +3 more
doaj   +1 more source

Influence analysis of alloy elements on irradiation embrittlement of RPV steel based on deep neural network

open access: yesInternational Journal of Advanced Nuclear Reactor Design and Technology, 2023
Reactor pressure vessel (RPV) is the most important core equipment in PWR. Its service life determines the service life of nuclear power plant and directly affects the economy and safety of nuclear power plant. Because RPV is serviced at high temperature,
Bai Bing   +5 more
doaj   +1 more source

Investigation of Potential Material Inhomogeneity in the Magnetically Detected Neutron-Irradiation-Generated Structural Degradation of Nuclear Reactor Pressure Vessel Steel

open access: yesApplied Sciences, 2022
A novel nondestructive method called magnetic adaptive testing has been previously applied to detect the neutron-irradiation-generated structural changes in reactor pressure vessel steel material.
Gábor Vértesy   +2 more
doaj   +1 more source

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