Abstract: In operation of the hydropower stations, in order to increase the power generation efficiency of the generator set, it is very important to solve the sewage blockage of the trash rack. After the cleanfeculence machine of Daduyuan Hydropower Station had been reformed, the feculence cleaning effects is good; the underwater devices operate reliably; the reformation effect is favorable.

Key words: feculence accumulation, feculence cleaning in full span, insert, feculence grasping