【Abstract】：In order to deal with the large amount of high-level radioactive waste generated with the development of nuclear energy, researchers propose to build geological disposal repository of high-level radioactive waste. To build an underground laboratory for geological disposal of high-level radioactive waste is a key project in the China's National Economic and Social Development plan. In 1985, China proposed to establish a high-level radioactive waste geological repository in the middle of the 21st century. In the subsequent 20 years, repository method investigation and site evaluation were processed, and it is finally determined that China’s high-level waste was disposed of “deep geological disposal”. Beishan, in Gansu province, is chose as the site to build an underground laboratory. Since 2014, the underground laboratory has made significant progress in site selection, construction technology and engineering design, and will start construction in 2019. A large number of metal components will be used in the underground laboratory, which are easily corroded when exposed to the underground humid air, water and bentonite as a buffer material. Therefore, it is necessary to monitor the corrosion of metal components exposed to different environments in real time. In this work, considering of the actual in-service environment in Beishan underground laboratory, two kinds of integrated probes are developed, in order to online monitor temperature, humidity, resistivity, corrosion rate simultaneously in air or in bentonite. Beside, several candidates of coatings are evaluated in the environment simulated to the underground laboratory, the low release of VOC is the first parameter to be considered.
【Keywords】：Underground laboratory Integrated inductance probe Online monitoring Corrosion rate
GaoKeweiDepartment of Material Physics and Chemistry, University of Science & Technology Beijingkwgao@mater.ustb.edu.cn
