A research activity started at the end of 80’s was substantiated within the context of the participation of the TMI-1 (Three Mile –Unit 1) Benchmark. The activity carried out in cooperation with University of Zagreb, deals with the coupling between one-dimensional thermal-hydraulic system code Relap5 (utilized in as a ‘fictitious’ three-dimensional code) and the three-dimensional neutron-physics code (the Parcs code) made available by the Purdue University in US: Parcs and Relap were successfully coupled in 1996 following attempts in Pisa to couple Relap5 with MODICO in-home developed neutron physics code (the attempt started in 1988). The TMI-1 is the twin reactor of the TMI-2 which had the core destroyed by the 1979 accident: because of this reactor data, owned by the industry, were made of public domain – i.e. to identified research groups including University of Pisa – making possible this activity. The activity is performed in the framework of the Organization for Economic Cooperation and Development / Nuclear Energy Agency / Nuclear Science Committee (OECD/NEA/NSC) and was leaded by Sartori E (OECD), Ivanov K. (PSU, US), Langenbuch L. (GRS, G) and D’Auria (UNIPI, I). The pioneering activity at UNIPI (University of Pisa), in cooperation with University of Zagreb, allowed the achievement of the first coupled results in the world with reference to the TMI-1 Main Steam Line Break (MSLB) transient. The importance of suitable sets of neutron physics ‘cross sections’ made available by PSU (Pennsylvania State University) must be noted. The activity demonstrate the importance of coupled 3D NK-TH (Neutron Kinetics – Thermal-hydraulics) codes for the evaluation of safety and safety margins in existing and new nuclear reactors. The present document constitutes the 2nd comprehensive report of the activity following the NT 335(98).
TMI-1 MSLB coupled 3-D Neutronics/Thermalhydraulics analysis: planning and results, OECD/CSNI NSC & PWG-2 Fourth Workshop on Pressurized Water Reactor Main Steam Line Benchmark – Paris (F), Jan 24-25, 2000
D'Auria F.
Primo
Methodology
;
2000-01-01
Abstract
A research activity started at the end of 80’s was substantiated within the context of the participation of the TMI-1 (Three Mile –Unit 1) Benchmark. The activity carried out in cooperation with University of Zagreb, deals with the coupling between one-dimensional thermal-hydraulic system code Relap5 (utilized in as a ‘fictitious’ three-dimensional code) and the three-dimensional neutron-physics code (the Parcs code) made available by the Purdue University in US: Parcs and Relap were successfully coupled in 1996 following attempts in Pisa to couple Relap5 with MODICO in-home developed neutron physics code (the attempt started in 1988). The TMI-1 is the twin reactor of the TMI-2 which had the core destroyed by the 1979 accident: because of this reactor data, owned by the industry, were made of public domain – i.e. to identified research groups including University of Pisa – making possible this activity. The activity is performed in the framework of the Organization for Economic Cooperation and Development / Nuclear Energy Agency / Nuclear Science Committee (OECD/NEA/NSC) and was leaded by Sartori E (OECD), Ivanov K. (PSU, US), Langenbuch L. (GRS, G) and D’Auria (UNIPI, I). The pioneering activity at UNIPI (University of Pisa), in cooperation with University of Zagreb, allowed the achievement of the first coupled results in the world with reference to the TMI-1 Main Steam Line Break (MSLB) transient. The importance of suitable sets of neutron physics ‘cross sections’ made available by PSU (Pennsylvania State University) must be noted. The activity demonstrate the importance of coupled 3D NK-TH (Neutron Kinetics – Thermal-hydraulics) codes for the evaluation of safety and safety margins in existing and new nuclear reactors. The present document constitutes the 2nd comprehensive report of the activity following the NT 335(98).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
