Izvorni znanstveni članak

Identification of Limiting Case Between DBA and SBDBA (CL Break Area Sensitivity): A New Model for the Boron Injection System

R. Gonzales ; San Piero a Grado Nuclear Research Group (GRNSPG) University of Pisa Via Livornese 1291-56122 - San Piero a Grado – Pisa - ITALY
A. Petruzzi ; San Piero a Grado Nuclear Research Group (GRNSPG) University of Pisa Via Livornese 1291-56122 - San Piero a Grado – Pisa - ITALY
F. D’Auria ; San Piero a Grado Nuclear Research Group (GRNSPG) University of Pisa Via Livornese 1291-56122 - San Piero a Grado – Pisa - ITALY
O. Mazzantini ; Nucleo-electrica Argentina Sociedad Anonima (NA-SA) Buenos Aires, ARGENTINA

Sažetak

Atucha-2 is a Siemens-designed PHWR reactor under construction in the Republic of
Argentina. Its geometrical complexity and (e.g., oblique Control Rods, Positive Void coefficient)
required a developed and validated complex three dimensional (3D) neutron kinetics (NK) coupled
thermal hydraulic (TH) model. Reactor shut-down is obtained by oblique CRs and, during
accidental conditions, by an emergency shut-down system (JDJ) injecting a highly concentrated
boron solution (boron clouds) in the moderator tank, the boron clouds reconstruction is obtained
using a CFD (CFX) code calculation. A complete LBLOCA calculation implies the application of
the RELAP5-3D© system code. Within the framework of the third Agreement “NA-SA –
University of Pisa” a new RELAP5-3D control system for the boron injection system was developed
and implemented in the validated coupled RELAP5-3D/NESTLE model of the Atucha 2 NPP. The
aim of this activity is to find out the limiting case (maximum break area size) for the Peak Cladding
Temperature for LOCAs under fixed boundary conditions.

Ključne riječi

Hrčak ID:

199045

URI

https://hrcak.srce.hr/199045

Datum izdavanja:

31.7.2017.

Posjeta: 981 *