Descripción del proyecto
Actualización de las directrices de seguridad para centrales nucleares
Las centrales nucleares están diseñadas para minimizar el riesgo de liberaciones radiológicas. Además, se han elaborado y aplicado directrices para la gestión de accidentes graves para ofrecer a los operadores unas directrices sistemáticas sobre medidas atenuantes. Sobre la base de estas directrices, el proyecto financiado con fondos europeos AMHYCO examinará cuestiones prácticas para reducir aún más (todo lo posible) la amenaza que plantea la combustión de gases generados durante accidentes en la integridad de la contención. En concreto, mejorará las directrices para la gestión de accidentes graves tanto en las fases dentro de vasijas como fuera empleando resultados numéricos y experimentales. Además, estudiará experimentalmente los fenómenos que son difíciles de predecir de forma numérica (como la distribución y combustión de H2/CO/H20). El tercer objetivo será mejorar la capacidad de predicción de las herramientas numéricas empleadas para determinar el peligro de explosión.
Objetivo
Combustible gases are one of the few elements that can really challenge the containment integrity. An appropriate management of the associated risk is paramount to avoid the potential release of large amounts of radioactive material to the environment. Surprisingly, the Severe Accident Management Guidelines (SAMGs) have not been updated according to the knowledge gained in the last decade and the database extension resulting from recent and ongoing projects. The AMHYCO project intends to respond to practical questions, such as the right timing and mode for actuation of containment safety systems (i.e. FCVS, sprays, fan coolers) to reduce as much as feasible the threat posed to containment integrity. To do so, all the available tools to enhance the present status (i.e. LP, 3D and CFD codes, together with experimentation and the best use of engineering judgement) are to be applied. Three specific objectives are set:
• To improve the Severe Accident Management Guidelines (SAMGs) for both in-vessel and ex-vessel phases with respect to combustible gases risk management, using both numerical and experimental results.
• To investigate experimentally phenomena that are difficult to predict numerically: H2/CO/H2O distribution and combustion and PARs behavior under realistic accidental conditions, taking into account the safety systems interaction.
• To improve the predictability of the numerical tools - Lumped Parameter (LP), 3D containment and Computational Fluid Dynamic (CFD) codes - used for explosion hazard evaluation inside the reactor containment to gain relevance in supporting SAMGs design and development.
The scope of this project is outlined by the most common reactor technology in the EU: PWRs. The whole project is structured in 7 WPs (coordination included) in which an entire WP is to be devoted to the enhancement of SAMGs. Finally, AMHYCO has received the NUGENIA label and 9 organizations have shown their interest with support letters .
Ámbito científico
Palabras clave
Programa(s)
- H2020-Euratom - Euratom Main Programme
- H2020-Euratom-1. - Indirect actions
Régimen de financiación
RIA - Research and Innovation actionCoordinador
28040 Madrid
España