®®®® SIIA Público

Título del libro: Proceedings Of The 20th Pacific Basin Nuclear Conference, Vol 1
Título del capítulo: Sensitivity and Uncertainty Analysis of a SCWR from Monte Carlo Simulations

Autores UNAM:
CECILIA MARTIN DEL CAMPO MARQUEZ; JUAN LUIS FRANCOIS LACOUTURE; SERGIO QUEZADA GARCIA;
Autores externos:

Idioma:

Año de publicación:
2017
Palabras clave:

SCWR; Monte Carlo; Sensitivity analysis; Numerical code


Resumen:

In this paper the sensitivity and uncertainty analysis of a SCWR applying a methodology based on Monte Carlo with reduced order models is presented. The numerical code to simulate the SCWR performance of the thermal hydraulics considers a three-pass core design with multiple heat-up steps. A model using an average channel simulates each pass. The neutronic calculations were performed with HELIOS-2 and the results were used to evaluate the reactivity feedback, caused by changes in the fuel temperature and supercritical water density, which was used to simulate the neutronic process with the point kinetics model. The Monte Carlo's simulation was applied to establish the operating domain of SCWRs which are not yet in operation, therefore the thermal-hydraulic and nuclear processes rely on numerical modeling with the purpose of developing or confirming the design basis. This methodology has into account an invariability test in order to obtain the representative sample, i.e., invariable results with the simulation size. Additionally, the relative standard deviation is calculated and presented for power, temperature and pressure drop, as well as the regression analysis.


Entidades citadas de la UNAM: