1、Testing regulations for light bus and light van periodical inspection
2、Research and development of the periodical inspection and prewarning management system for mine electromechanical devices
3、Maojianshan hydropower station has operated for 40 years safely. Two times of periodical inspection has been carried out, and the dam has assessed as normal one.
4、For a long time, the maintenance mode of relay protection equipments is based on the principle of mainly periodical inspection, supplemented by break maintenance.
