On the influence of dynamical fuel assembly deflections on the neutron noise level
M Viebach, N Bernt, C Lange, D Hennig… - Progress in Nuclear …, 2018 - Elsevier
KWU pressurized water reactors, the neutron flux is measured with in-core and the ex-core
detectors. Investigating the signal fluctuations of these detectors at fixed burnup, periods of …
detectors. Investigating the signal fluctuations of these detectors at fixed burnup, periods of …
PARCS vs CORE SIM neutron noise simulations
N Olmo-Juan, C Demazière, T Barrachina… - Progress in Nuclear …, 2019 - Elsevier
In a nuclear reactor, even operating at full power and steady-state conditions, fluctuations
are detected in the recording of any process parameter. These fluctuations (also called …
are detected in the recording of any process parameter. These fluctuations (also called …
[HTML][HTML] Development and verification of a methodology for neutron noise response to fuel assembly vibrations
D Chionis, A Dokhane, L Belblidia, H Ferroukhi… - Annals of Nuclear …, 2020 - Elsevier
Nuclear reactors are stochastic systems, in which several parameters fluctuate even during
steady-state conditions. In addition, structural components like fuel assemblies, vibrate due …
steady-state conditions. In addition, structural components like fuel assemblies, vibrate due …
[HTML][HTML] Studies of reactor noise response to vibrations of reactor internals and thermal-hydraulic fluctuations in PWRs
V Verma, D Chionis, A Dokhane, H Ferroukhi - Annals of Nuclear Energy, 2021 - Elsevier
This work is a contribution towards the development of computational methods that allow
investigation and prediction of reactor noise response due to in-core perturbations such as …
investigation and prediction of reactor noise response due to in-core perturbations such as …
A time and frequency domain analysis of the effect of vibrating fuel assemblies on the neutron noise
The mechanical vibrations of fuel assemblies have been shown to give rise to high levels of
neutron noise, triggering in some circumstances the necessity to operate nuclear reactors at …
neutron noise, triggering in some circumstances the necessity to operate nuclear reactors at …
Modeling and simulation of neutron noise triggered by fuel assembly vibrations in 3D hexagonal geometry
Neutron noise is a natural phenomenon in nuclear reactors. Hence, its investigation plays a
significant role in nuclear reactor physics and safety-related issues. While neutron noise …
significant role in nuclear reactor physics and safety-related issues. While neutron noise …
Development of a calculation model to simulate the effect of bowing of the VVER-1000 reactor fuel assembly on power distribution
J Vosoughi, N Vosoughi, AA Salehi - Annals of nuclear energy, 2023 - Elsevier
Abstract The Lateral deformation of Fuel Assembly (FA) under the operational conditions of
the reactor cores is called FA bowing. This phenomenon is caused by factors such as …
the reactor cores is called FA bowing. This phenomenon is caused by factors such as …
[PDF][PDF] Deep learning-based anomaly detection in nuclear reactor cores
In this work, a methodology is proposed for the classification of different perturbation types
and their position in a nuclear reactor core. More specifically, it is based on a Convolutional …
and their position in a nuclear reactor core. More specifically, it is based on a Convolutional …
Neutron noise analysis of simulated mechanical and thermal-hydraulic perturbations in a PWR core
LA Torres, D Chionis, C Montalvo, A Dokhane… - Annals of Nuclear …, 2019 - Elsevier
Abstract KWU pre-Konvoi PWRs (SIEMENS design) are commonly exhibiting high neutron
noise levels which can lead to costly operational issues (ie activation of SCRAM system …
noise levels which can lead to costly operational issues (ie activation of SCRAM system …
Intelligent techniques for anomaly detection in nuclear reactors
The safe operation of nuclear power plants is highly dependent on the ability of quickly and
accurately identifying possible anomalies and perturbations in the reactor. Operational …
accurately identifying possible anomalies and perturbations in the reactor. Operational …