Conference
The OSCAR code: a simulation tool to assess the PWR contamination for decommissioning
| العنوان: | The OSCAR code: a simulation tool to assess the PWR contamination for decommissioning |
|---|---|
| المؤلفون: | Dacquait, Frederic, Genin, J-Baptiste, Francescatto, Jerome, Benier, Gilles, Galassi, Gaëlle, Broutin, Francois, Gherrab, Mehdi, Tevissen, Etienne, You, Dominique, Jobert, Thomas, Chirent, Thomas, Engler, Nathalie, Mariet, Clarisse |
| المساهمون: | Laboratoire de Maitrise de la contamination et de la Chimie des Caloporteurs et du Tritium (LMCT), Service Mesures et modélisation des Transferts et des Accidents graves (SMTA), Département Technologie Nucléaire (DTN), Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES) (IRESNE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES) (IRESNE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Technologie Nucléaire (DTN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département de Physico-Chimie (DPC), 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)-Université Paris-Saclay, EDF (EDF), FRAMATOME |
| المصدر: | DEM 2021 – International Conference on Decommissioning Challenges: ; https://cea.hal.science/cea-03434535 ; DEM 2021 – International Conference on Decommissioning Challenges:, Sep 2021, Avignon, France. pp.Oral T04 / 054 |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | OSCAR, simulation, contamination, PWR, decommissioning, source term, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] |
| جغرافية الموضوع: | Avignon, France |
| الوصف: | International audience ; Knowing the contamination state of the end-of-life nuclear reactor systems by Long-Lived RadioNu-clides (LLRNs) is a key stage for the decommissioning process. Indeed, the initial state is necessary to optimize the decommissioning works and to manage the radioactive waste as well. To address this issue, the contamination state is usually characterized using different types of techniques: in-situ gamma spectrometry, gamma camera scanning, dose rate measurements, , , measurements of samples obtained by smears or scrapings and then chemical separation processes, scaling factor approach… To reduce the amount of these measurements and thus the Occupational Radiation Ex-posure (ORE) and the decommissioning costs, a method is to assess the level of contamination by simulation. Furthermore, at the design stage of a new reactor, its decommissioning has to be taken into account and a simulation tool, such as the OSCAR code, can predict the radioactive source term at the end of life of a future reactor.The OSCAR code (Outil de Simulation de la ContAmination en Réacteur - tOol of Simulation of Con-tAmination in Reactor) has been developed by the CEA in collaboration with EDF and Framatome since the 1970s. The OSCAR code simulates the production and transfer of Activated Corrosion Products (ACPs) and Actinides and Fission Products and (AFPs) in the reactor systems and thus calculates the masses and activities of radionuclides deposited inside piping and heat exchangers of different circuits. As the OSCAR code has been originally devoted to mainly an industrial objective, which is the reduction of the Occupational Radiation Exposure (ORE) for operating PWRs, it deals with the main ACPs, 60Co, 58Co, 54Mn…, which are short-lived radionuclides. Nevertheless, it also cal-culates LLRNs of interest for decommissioning, such as 55Fe, 63Ni, 90Sr, 239Pu…, most of which are difficult to measure. The OSCAR code is validated through on-site measurements, including the EMECC campaigns, an operational ... |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| Relation: | cea-03434535; https://cea.hal.science/cea-03434535; https://cea.hal.science/cea-03434535/document; https://cea.hal.science/cea-03434535/file/SFEN-DEM2021_054_Dacquait_OSCAR-Decommissioning_paper.pdf |
| الاتاحة: | https://cea.hal.science/cea-03434535 https://cea.hal.science/cea-03434535/document https://cea.hal.science/cea-03434535/file/SFEN-DEM2021_054_Dacquait_OSCAR-Decommissioning_paper.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.5FFBC21B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |