Nuclear power plants (NPPs) are complex dynamic systems with multiple sensors and actuators. The presence of faults in the actuators can deteriorate system’s performance cause serious safety issues. This calls for development fault detection diagnosis isolation such faults. In this study, (FDD) based on neural networks (NN) K-nearest neighbour (KNN) algorithm is applied to a pressurized water r...

Establishing a dynamic model that accurately describes realistic pressurized water reactor (PWR) fuel assembly is crucial to precisely evaluate the mechanical properties of in seismic or loss coolant accidents (LOCAs). The pluck test combined with logarithmic decrement method has been widely applied previous studies extract fundamental modal parameters calibrate models. However, most investigat...

There has been a lot of interest in generating electricity using nuclear energy recently. This is due to the features such source energy. The main part system reactor core, especially most widely used Pressurized Water Reactor (PWR). hottest system; security risks and economic possibilities must be considered. Controlling this can increase efficiency power systems. study presents dynamic model ...

Fault detection and diagnosis (FDD) systems can reduce high costs energy consumption. This paper presents a machine learning-based fault technique for actuators sensors in pressurized water reactor (PWR). In the proposed FDD framework, faults are first detected using shallow neural network. Second, is performed 15 different classifiers provided MATLAB Classification Learner toolbox, including s...

Three complementary methods have been implemented in the code Denovo that accelerate neutral particle transport calculations with methods that use leadership-class computers fully and effectively: a multigroup block (MG) Krylov solver, a Rayleigh Quotient Iteration (RQI) eigenvalue solver, and a multigrid in energy (MGE) preconditioner. The MG Krylov solver converges more quickly than Gauss Sei...

The numerical solution of the Linearized Boltzmann Equation (LBE) via the Discrete Ordinates method (SN) requires extensive computational resources for large 3-D neutron and gamma transport applications due to the concurrent discretization of the angular, spatial, and energy domains. This paper will discuss the development RAPTOR-M3G (RApid Parallel Transport Of Radiation – Multiple 3D Geometri...

Pressurized water reactors are typically surrounded in the radial direction by neutron reflectors made from stainless steel and water. These decrease leakage provide protection of pressure vessel fast neutrons damaging its integrity. Such a reflector influences multiplication factor core distribution flux fission power inside core. All these effects can be analyzed full-core simulations using m...