三代核电技术堆芯补水箱液位测量方案可行性研究

The third generation nuclear power technology core makeup tank level measure project discussion

堆芯补水箱是三代核电非能动技术的重要组成部分之一。当发生设计基准事故时,其中的反应堆冷却剂受重力影响直接注入堆芯,以控制事故的发展。目前采用1E级磁浮子液位计来测量堆芯补水箱的液位。考虑到长期以来对于堆芯补水箱的安全级液位测点选型方案存在不同见解,为了验证现有选型方案的正确性,在目前常见的液位仪表中尝试寻找其他可行的测量方式。针对其他测量方式在测量不确定度、可行性等方面进行讨论和分析。最后,比较几种方案的优缺点并进行总结以确定堆芯补水箱液位测点的仪表选型方案。

Core makeup tank is an important part of the third generation nuclear power passive technology.the reactor coolant water within CMT will be injected into the reactor core by gravity,if design basis accident occurred.At present,1E magnetically-actuated float level transmitters were used to measure the CMT’s level.There are some different standpoints for the CMT’s measure project.In order to verify the correctness of the CMT’s existing measure project,the other measure projects for CMT level in uncertainty and feasibility are seeked.Finally comparing the merits and demerits between the projects,and the best measure projects for CMT’s level is determined.