Saudi ArabiaThe SCC project chimney height is 169 meters and the top 60 meters needs to be replaced. The project department used a non-standard working condition of a 650-ton crawler track with a pole length of 189 meters to overcome the influence of unfavorable factors such as strong winds, rain and sandstorms. It organized scientifically, took every opportunity to work continuously for 24 hours, and completed all demolition and installation work in only 15 days.