Modelling guidelines for safety analysis of Station Black Out sequences based on experiments at the PKL test facility
After the Fukushima accident, “stress-test” activities carried out worldwide pointed out the need to study additional accident management measures to deal with prolonged Station Black Out (SBO) scenarios. Without any operator actions, a total loss of the secondary side heat sink leads to core uncove...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/327438 |
| Acceso en línea: | https://hdl.handle.net/2117/327438 https://dx.doi.org/10.1016/j.anucene.2019.107179 |
| Access Level: | acceso abierto |
| Palabra clave: | Fukushima Nuclear Disaster, Japan, 2011 Nuclear physics Integral test facility PWR Station black out PKL Fukushima, Accident nuclear de, Japó, 2011 Física nuclear Àrees temàtiques de la UPC::Energies::Energia nuclear Àrees temàtiques de la UPC::Enginyeria elèctrica |
| Sumario: | After the Fukushima accident, “stress-test” activities carried out worldwide pointed out the need to study additional accident management measures to deal with prolonged Station Black Out (SBO) scenarios. Without any operator actions, a total loss of the secondary side heat sink leads to core uncovery, to core damage and ultimately to a melt-down scenario. The international NEA/OECD PKL-3 project has addressed the efficiency of possible accident management actions to re-establish core cooling by experiments at the PKL test facility. Since best estimate system codes were mainly developed to simulate LOCA scenarios, their performance and the general guidelines followed to simulate PWR power plants are called into question. In this paper, RELAP5 simulations of three SBO experiments are presented. An assessment of the code for the particular phenomenology in the experiments have been conducted. Specific guidelines on modelling and a list of the most important sources of uncertainties are provided. |
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