Abstract
Post-accident heat removal (PAHR) after severe accident in nuclear reactors plays a vital role to ensure public safety by effectively cooling fragmented core debris within the primary boundary. Design and implementation of multiple safety features demand thorough understanding of the sequences involved in accident progression. The key factors influencing PAHR are molten fuel coolant interaction and grid plate melt through, followed by relocation of fragmented fuel and structural materials settling on the core catcher in the form of debris below the core. The present work is focused on experimental and numerical investigation of melt fragmentation and settlement, morphological characteristics of debris, and finally heat removal from the debris bed via dedicated decay heat removal system. Series of dedicated experimental facilities have been setup in stages and preliminary trials are being conducted to generate the database for development and validation of numerical models, to be used for safety analysis of reactor systems. This paper also discusses preliminary experimental results and comparisons of data with numerical findings.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
