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全国农用~(60)Co源室在结构设计和操作控制系统方面都是大同小异,如何进行改进,使自动装置安全、可靠运转,这是摆在~(60)Co源室操作人员面前的一件重要的工作。根据我们多年来使用~(60)Co源的经验,对自动装置初步作了改进,现介绍如下:1.~(60)Co源架机械迫降方法 为了获得较高而均匀的剂量率,设计成空心源内腔,采用悬托式的~(60)Co源架,并在源架上方设置机械迫降机构(见图1)。当源架在行程中被卡住时,可通过迫降重锤敲打源架,使整个源架掉落井中的方面降源。
The national agricultural 60Co source room is similar in structure design and operation control system. How to improve it to make the automatic device safe and reliable operate? This is the front of the ~ (60) Co source room operator Important work. According to our experience of using ~ (60) Co source over many years, preliminary improvements have been made to the automatic device, and are described as follows: 1. ~ (60) Co source mechanical dead down method In order to obtain a higher and uniform dose rate, Hollow source cavity, the use of suspend-type ~ (60) Co source frame, and set up in the source frame above the mechanical landing mechanism (see Figure 1). When the source rack is stuck during the trip, the source rack can be tapped by the forcing hammer to lower the source of the entire source rack from the well.