氟化锂晶体剂量计用于我国核电站环境热点剂量监测

Application of Fluoride Lithium Crystal Dosimeter in NPP Environmental Dose Monitoring in China

核电站在运行阶段需要更换使用年份接近设计寿期的设备,并为此支付高额的直接费用。对高成本的关键设备或更换难度极大的设备进行延寿可大幅降低该投入,监测上述设备所处的环境剂量可为其延寿的合理性提供依据。本文简要介绍了氟化锂晶体剂量计的特性及国际与国内的研究进展和应用现状,分析了氟化锂晶体剂量计用于我国核电站环境热点剂量监测的技术基础、需要解决的问题与应用前景等,为该项技术在我国核电站的应用提供基础参考。

Instruments into the end of design life need to be replaced,and thus great input is consumed,during nuclear power plant operation and life extension of the operational phase. Life extensions of key instruments of high cost and those of extremely hard replacement could cut the input dramatically. Monitoring of environmental conditions of these instruments could provide basis of rationality for their life extension. The dose characteristics,and international research progress and application status,of lithium fluoride crystal dosimeter is briefly introduced. The technical basis,problems to be resolved and prospects of lithium fluoride crystal dosimeter ＇s application in environmental dose monitoring of nuclear island equipments in China＇s nuclear power plants are discussed so that a basis for reference could be provided.