MATERIAL ISSUES FOR CURRENT AND ADVANCED NUCLEAR REACTOR DESIGNS
作者： Jasmina Vujić , Peter Hosemann
DOI: 10.7251/CM.V1I5.1493
关键词: Prolonged exposure 、 Mechanical engineering 、 Nuclear reactor 、 Coolant 、 Lifetime extension 、 Temperature and pressure 、 Process engineering 、 Lead (geology) 、 Current (fluid) 、 Reliability (semiconductor) 、 Materials science
摘要: In all engineering applications, design and materials together determine the functionality reliability of a device. This is particularly important in nuclear systems where are pushed to their limits phenomena not present anywhere else occur. combination high temperature pressure, stress, corrosive environment radiation combined causes significant challenges. Majority commercial LWRs today licensed for 40 years operation, but many them undergo lifetime extension 60 or possibly 80 years. Materials degradation has always been issue. However, due plant extension, finding that could sustain prolonged exposure these extreme conditions become problem. addition challenges current LWRs, advanced reactors usually deal with even more difficult issues operational requirements. Unusual heat transport media, such as liquid metals, salts other types coolants, lead whole new set material While corrosion main issue, much higher operating temperatures create additional difficulties. this paper, we an overview reactor designs.
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