10MW 高温气冷实验堆的地震监测系统

为了保障地震发生时10MW高温气冷实验堆（HTR－10）的正常运行和安全停堆，设置了地震监测系统。该系统按无人值守方式设计，主要由高灵敏度的加速度传感器、高可靠性的工业控制计算机和成熟的地震分析软件组成，信号采集处理采用了最新技术。系统监测三个测点的九路加速度时程信号，判断为地震信号后计算峰值加速度，超过报警阈值时向主控室提供声光报警信号；系统同时计算响应谱和设计响应谱，并与理论设计响应谱进行比较，最后打印出地震报告。抗震试验和性能试验结果表明，该系统符合抗震设计要求，其功能覆盖并超过了组合使用的多种地震监测仪表。

Seismic Monitoring System in 10MW High Temperature Reactor

The seismic monitoring system is set up to preserve the 10MW High Temperature Reactor running normally or can be safely shut-down under the seismic status.The system is deigned for unattended station.This system is composed of high sensibility accelerometer,high reliability industry control unit(ICU) and ripe software for seismic analysing.It also uses new techniques in seismic data processing.Nine time history acceleartion signals in three positions are provided to this system.The peak accelerate value will be computed out after the system confirmed the seismic condition.The master-control room will get alarm signal with sound and light as the peak accelerate value above the threshold value.The system will also calculate computing response spectrum and design response spectrum.After the comparison with this two value and theory response spectrum,a final seismic report will be printed.With performance test on the MTS vibrating table of Tongji University,It has shown that Ⅰ type seismic design bases can be carried out with such system.The performance of this system is proved to be better than the assembly unit of many other seismic monitoring instruments.