Design Improvement of Steam Generator Blowdown System
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Abstract
According to the results of the full range of accident analysis, in case of steam generator tube rupture, in order to make affected SG water level will not rise too fast, and need to control the affected SG water level and pressure by steam generator blowdown system. According to design improvement of steam generator blowdown system, increase the system design bases, the blowdowns are routed to the IRWST inside the containment, in order to depressurize affected SG pressure and control affected SG level, to prevent the affected steam generator is filled with water, meet the requirements of steam generator blowdown system in the design basis accident under the safety function. The improvement design can satisfy the third generation nuclear power technology, provide theoretical basis for the safety of the third generation nuclear power in China.
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