一、引言随着核电事业的发展,核设施的数量逐年增加。在运行过程中,积累的放射性愈来愈多,给正常的运行和维修带来了不少困难。为了降低运行、维护、检修过程中的放射性,设备运行到一定期限后,就要对设备进行去污,有些设备则要停止运行退役。核工业的去 I. INTRODUCTION With the development of nuclear power industry, the number of nuclear facilities has been increasing year by year. In operation, more and more accumulated radioactivity brings many difficulties to normal operation and maintenance. In order to reduce the radioactive during operation, maintenance and overhaul, the equipment should be decontaminated after it has operated for a certain period of time, and some equipment should be decommissioned. Nuclear industry go