Niniek Ramayani Yasintha, Omondi Christopher Ondwasi, Namgung Ihn
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引用次数: 0
Abstract
This research is about improving the design of Core Support Barrel (CSB) by eliminating the gap between its hot-leg opening and the reactor vessel (RV) outlet nozzle. This gap causes significant bypass flow, impacting reactor performance. A proposed design modification aimed to establish contact between these components, requiring a thorough analysis of the contact interface. The study determined that a contact overlap of 15 mm meets ASME code standards and other relevant criteria. Moreover, this design improvement offers the added benefit of enhancing the seismic response of the reactor internals due to the increased horizontal support provided by the RV outlet nozzle to the CSB. Modal analysis revealed a substantial upward shift in the CSB’s natural frequency from 15.6 Hz-20.7 Hz to 21.9 Hz-38 Hz, representing a more than 40 % increase. The research demonstrates that the proposed design effectively eliminates bypass flow, and significantly improves the seismic response of the reactor internals.
期刊介绍:
Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology.
Fundamentals of Reactor Design include:
• Thermal-Hydraulics and Core Physics
• Safety Analysis, Risk Assessment (PSA)
• Structural and Mechanical Engineering
• Materials Science
• Fuel Behavior and Design
• Structural Plant Design
• Engineering of Reactor Components
• Experiments
Aspects beyond fundamentals of Reactor Design covered:
• Accident Mitigation Measures
• Reactor Control Systems
• Licensing Issues
• Safeguard Engineering
• Economy of Plants
• Reprocessing / Waste Disposal
• Applications of Nuclear Energy
• Maintenance
• Decommissioning
Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.