新燃料组件运输容器加速度计跳离事件的处理方法研究

新燃料组件运输容器上的加速度计是用于监测燃料组件运输过程中的异常冲击。加速度计的跳离表示在运输过程中可能存在对燃料组件产生损坏的载荷。近年来，国内核电站发生多起新燃料组件运输容器的加速度计跳离事件。发生运输容器的加速度计跳离事件后，需对事发燃料组件的机械完整性以及可用性进行评估，并判断其是否可入堆使用。本文在对加速度计的作用原理及加速度计跳离过程进行深入分析基础上，提出了一种新燃料组件运输容器加速度计跳离事件的通用处理方法。利用该通用处理方法对某核电站近年来发生的新燃料组件运输容器加速度计跳离事件进行了处理，处理结果得到了业主的采纳。本文中提出的加速度计跳离事件通用处理方法，可为国内核电站后续加速度计跳离事件的处理提供重要的参考和依据。 

Research on Handling Method of Accelerometer Tripping of Fresh Fuel Assembly Transport Vessel

Accelerometers mounted on fresh fuel assembly transport vessel are used to monitor the abnormal shock of fuel assemblies during transport. The tripping of the accelerometer indicates that there may be a load that may damage the fuel assembly during transport. In recent years, several tripping events of fresh fuel assembly transport vessel accelerometers happened in domestic nuclear power plants. After the tripping of accelerometer of the transport vessel, it is necessary to evaluate the mechanical integrity and availability of the incident fuel assembly and judge whether it can be used in the reactor. Based on the in-depth analysis of the principle of the accelerometer and the tripping process of the accelerometer, this paper puts forward a general handling method to deal with the tripping of the accelerometer in the transport vessel of the new fuel assembly. The general handling method is used to deal with the tripping event of the new fuel assembly transport vessel accelerometer in a nuclear power plant in recent years, and the result has been adopted by the owner. The general handling method of accelerometer tripping event proposed in this paper can provide an important reference and basis for the subsequent handling of accelerometer tripping event in domestic nuclear power plants.