As a safety precaution in all work where there is a possibility of falling from a height, it is necessary to first plan work to eliminate the possibility, and if possible, use collective protection methods or use lifeline systems. Lifeline is widely used for roof maintenance, stream cleaning, chimney measurement, solar panel installation and cleaning. It is necessary to use lifelines for maintenance work on overhead cranes and crane walkways in facilities, maintenance work on vehicle tops, tanker filling sites, and many works in construction.