Miller D C
Energy Operations, Inc., Killona, LA 70066, USA.
Health Phys. 1999 Feb;76(2 Suppl):S3-6. doi: 10.1097/00004032-199902001-00003.
As the ALARA coordinator at Waterford 3 Nuclear Steam Electric Station, I have seen radiological challenges in many forms. Some are handled as routine with little effort, while others can severely challenge even the finest Health Physics staff. One such event occurred on 26 December 1997, during a routine recirculation of the Spent Resin Tank, when contents of an unknown origin spilled from the tank. Technicians performing initial actions to contain the spill monitored radiation levels of 5-20 rem h21 (50-200 mSv) at waist level. Based on photographs and visual accounts it was estimated that approximately 30-40 ft3 (0.57-1.12 m3) of resin had spilled into the pump room. A sample of the resin indicated that dose rates at the floor would exceed 100 rem h21 (1 Sv h21). It was clear, given the volume of material spilled and dose rates in the room, that robots would be required for any type of recovery effort. This presented another problem in that Waterford 3 did not own a robot, and we had no experience in this area.
作为沃特福德3号核蒸汽电站的“尽可能降低辐射剂量”（ALARA）协调员，我见过多种形式的辐射挑战。有些挑战按常规处理，轻而易举，而另一些挑战即便对最优秀的保健物理人员来说也极具难度。1997年12月26日，在乏树脂罐的例行再循环期间，就发生了这样一起事件，当时一个来源不明的罐内物质从罐中溢出。执行初步堵漏行动的技术人员在腰部高度监测到辐射水平为5至20雷姆/小时（50至200毫希沃特）。根据照片和现场描述估计，约30至40立方英尺（0.57至1.12立方米）的树脂泄漏到了泵房。树脂样本显示，地面的剂量率将超过100雷姆/小时（1希沃特/小时）。鉴于泄漏物质的体积和室内剂量率，显然任何类型的回收工作都需要机器人。这又带来了另一个问题，即沃特福德3号没有机器人，而且我们在这方面没有经验。
