Details

Autor(en) / Beteiligte

• Titouche Kouidri, W.
• Letaim, F.
• Boucenna, A.
• Boulhaouchet, M.H.

Titel

Safety analysis of reactivity insertion accidents in a heavy water nuclear research reactor core using coupled 3D neutron kinetics thermal-hydraulic system code technique

Ist Teil von

• Progress in nuclear energy (New series), 2015-11, Vol.85, p.384-390

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Nuclear power plant Safety analysis using coupled 3D neutron kinetics/thermal-hydraulic codes technique is increasingly used nowadays. Actually, the use of this technique allows getting less conservatism and more realistic simulations of the physical phenomena. The challenge today is oriented toward the application of this technique to the operating conditions of nuclear research reactors. In the current study, a three-Dimensional Neutron Kinetics and best estimate Thermal-Hydraulic model based upon the coupled PARCS/RELAP5 codes has been developed and applied for a heavy water research reactor. The objective is to perform safety analysis related to design accidents of this reactor types. In the current study two positive reactivity insertion transients are considered, SCRAM protected and self-limiting power excursion cases. The results of the steady state calculations were compared with results obtained from conventional diffusion codes, while transient calculations were assessed using the point kinetic model of the RELAP5 code. Through this study, the applicability and the suitability of using the coupled code technique with respect to the classical models are emphasized and discussed. •A 3-dimensional neutron kinetics and best estimate thermal-hydraulic codes have been used.•Perform steady state and accidents related to positive reactivity insertion transients.•The results were compared with conventional diffusion codes as well as Monte Carlo codes.•The transient calculations were assessed using the point kinetic model of the RELAP5 code.•The applicability of coupled code technique with respect to classical models is emphasized.