Coupled Experimental and Computational Approach for CABRI Power Transients Analysis
| Autor: | Laurent Pantera, J. Lecerf, Patrick Blaise, O. Clamens, Jean-Pascal Hudelot, B. Biard, B. Duc |
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| Přispěvatelé: | Service Physique EXpérimentale, d'essais en Sûreté et d'Instrumentation (SPESI), Département Etude des Réacteurs (DER), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Laboratoire des Programmes Expérimentaux et d'Essais en Sûreté (LP2E), CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Etude des Réacteurs (DER), URCA - UFR des Sciences économiques, sociales et de gestion (URCA UFR SESG), Université de Reims Champagne-Ardenne (URCA), Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA) |
| Rok vydání: | 2018 |
| Předmět: |
Nuclear and High Energy Physics
Materials science business.industry 020209 energy Nuclear engineering Multiphysics Monte Carlo method Neutron poison 02 engineering and technology [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] Computational fluid dynamics 7. Clean energy CABRI Power (physics) multiphysics Nuclear Energy and Engineering Nuclear reactor core 13. Climate action Neutron flux power transients SPARTE 0202 electrical engineering electronic engineering information engineering Transient (oscillation) Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Nuclear Science IEEE Transactions on Nuclear Science, 2018, 65 (9), pp.2434-2442. ⟨10.1109/tns.2018.2847331⟩ IEEE Transactions on Nuclear Science, Institute of Electrical and Electronics Engineers, 2018, 65 (9), pp.2434-2442. ⟨10.1109/tns.2018.2847331⟩ |
| ISSN: | 1558-1578 0018-9499 |
| DOI: | 10.1109/tns.2018.2847331 |
| Popis: | International audience; CABRI is an experimental pulse reactor, funded by the French Nuclear Safety and Radioprotection Institute and operated by Commissariat à l'Énergie Atomique et aux Énergies Alternatives at the Cadarache Research Center. It is designed to study fuel behavior under reactivity-initiated accident conditions. In order to produce the power transients, reactivity is injected by depressurization of a neutron absorber (3 He) situated in the so-called transient rods inside the reactor core. The CABRI reactivity injection system allows us to generate structured tran-sients based on specific sequences of depressurization. For such transients, the time difference between the openings of two valves of the reactivity injection system has an important impact on the power pulse shape. A kinetic point code, SPARTE, was developed in order to replace the older DULCINEE code dedicated to the modeling and prediction of CABRI power transients. The SPARTE code includes new models of 3 He depressurization based on CFD calculations, variable Doppler coefficient based on Monte Carlo calculations, and variable axial neutron flux profile. The density and Doppler models have a large impact on power transient prediction. For low initial pressure transients, the major uncertainty comes from the reactivity injected by the 3 He depressurization. For high initial pressure transients, the 3 He heating during the power pulse ("TOP effect") is responsible of an additional injection of reactivity that needs to be modeled precisely. |
| Databáze: | OpenAIRE |
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