核测井用密封中子源对工作人员的辐射剂量计算  

作　　者：孙笑雨 

机构地区：[1]中国原子能科学研究院

出　　处：《科技视界》2020年第24期128-134,共7页Science & Technology Vision

摘　　要：现代的核测井技术具有探测精度高、探测周期短、经济性好并且不需要依赖多年地质经验的优点,是测井技术发展的主要方向。但是其核心部件—中子源具有放射性伤害,本文主要使用MCNP计算程序对核测井用中子源跌落后对工作人员的辐射剂量进行计算。本文利用MCNP建立了两个工作模型。通过参考实际核测井中子源的能量,建立工作人员误靠近掉落中子源的模型来模拟人员在事故现场受照的情况,计算其受到的辐射剂量;通过参考工程中中子源的运输情况,建立司机驾驶运输车模型,模拟计算驾驶室司机在运输过程中中子源跌落后所受的辐射剂量。经过模拟计算得出的数据误差都在规定的百分之五以下,可以为工作人员安全施工提供借鉴。Modern nuclear logging technology has the advantages of high detection precision,short detection period,good economy and no need to rely on years of geological experience.However,the core component,neutron source,has radioactive damage.In this paper,the MCNP program is mainly used to calculate the radiation dose of the staff when the neutron source falls behind the nuclear logging.In this paper,two working models are established by using MCNP.By referring to the energy of actual nuclear logging neutron source,the model of workers mistakenly approaching the neutron source is established to simulate the radiation exposure of workers at the accident site,and the radiation dose is calculated.By referring to the transportation of neutron source in engineering,a driver-driven transport vehicle model was established to simulate and calculate the radiation dose of the driver during the transportation of neutron source falling behind.The error of the data obtained by simulation calculation is less than 5%,which can provide reference for the safe construction of the staff.

关 键 词：核测井 中子源 人体 辐射剂量 MCNP 

分 类 号：G642[文化科学—高等教育学]