publication . Article . 2020

NEUTRON NOISE SPECTRAL FEATURES OF SIMULATED MECHANICAL AND THERMAL-HYDRAULIC PERTURBATIONS IN A PWR CORE

L.A Torres; D. Chionis; C. Montalvo; A. Dokhane; A. García-Berrocal;
Open Access English
  • Published: 02 Apr 2020 Journal: EPJ Web of Conferences, volume 247
  • Publisher: EDP Sciences
Abstract
KWU-PWR reactors (SIEMENS design) are commonly exhibiting high neutron noise levels that can lead to costly operational issues. Recent analysis seems to indicate that, coolant flow, temperature oscillations, and mechanical vibrations have a key impact on neutron noise phenomena. In order to advance in understanding this phenomenon, the transient nodal code SIMULATE-3K (S3K) has been already utilized to simulate scenarios with individual or combined types of perturbation sources: mechanical vibrations of fuel assemblies and thermal-hydraulic fluctuations at the core inlet. In this work, new simulations are performed with all the perturbations applied simultaneous...
Subjects
free text keywords: simulate-3k, noise analysis, mechanical vibrations, thermal-hydraulic fluctuations, lcsh:Physics, lcsh:QC1-999
Funded by
EC| CORTEX
Project
CORTEX
Core monitoring techniques and experimental validation and demonstration
  • Funder: European Commission (EC)
  • Project Code: 754316
  • Funding stream: H2020 | RIA
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