Water cooled nuclear reactors constitute almost 96% of the total nuclear reactors operating worldwide. Three major accidents in nuclear history i.e. TMI, Chernobyl and recent Fukushima have compelled nuclear scientists and engineers to have a relook at the safety of nuclear reactors. Past decade has seen an exponential growth on research contributed towards severe accident research. In this perspective, severe accident management strategies have been developed to retein the molten corium either insider the reactor vessel (called as in-vessel retention) or by cooling the corium debris in core catchers located outside the reactor vessel. One of the crucial aspects of molten corium retention is corium coolability in severe accident mitigation. Corium coolability is an extremely complex phenomenon due to presence of multiple components with different modes of direct and indirect heat transfer with phase change, and occurrence of multiple phases. In order to build understanding of these phenomena, extensive experimentation is needed. Conducting experiments at severe accident condition is a challenging task due to elevated temperatures and presence of radioactive materials. The aim of this book is to present to the scientific community, the physics behind several complex phenomena occurring during corium coolability that has been obtained through meticulous and challenging series of experiment at severe accident conditions, which have proved for in vessel retention and ex-vessel corium coolability in core catchers.
Comment to the Elsevier proposed Book Molten Corium Retention in Nuclear Reactors: Insights from experiments
D'Auria F.
Primo
Conceptualization
2019-01-01
Abstract
Water cooled nuclear reactors constitute almost 96% of the total nuclear reactors operating worldwide. Three major accidents in nuclear history i.e. TMI, Chernobyl and recent Fukushima have compelled nuclear scientists and engineers to have a relook at the safety of nuclear reactors. Past decade has seen an exponential growth on research contributed towards severe accident research. In this perspective, severe accident management strategies have been developed to retein the molten corium either insider the reactor vessel (called as in-vessel retention) or by cooling the corium debris in core catchers located outside the reactor vessel. One of the crucial aspects of molten corium retention is corium coolability in severe accident mitigation. Corium coolability is an extremely complex phenomenon due to presence of multiple components with different modes of direct and indirect heat transfer with phase change, and occurrence of multiple phases. In order to build understanding of these phenomena, extensive experimentation is needed. Conducting experiments at severe accident condition is a challenging task due to elevated temperatures and presence of radioactive materials. The aim of this book is to present to the scientific community, the physics behind several complex phenomena occurring during corium coolability that has been obtained through meticulous and challenging series of experiment at severe accident conditions, which have proved for in vessel retention and ex-vessel corium coolability in core catchers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
