‘’Permanent life line’’ means the system that can be set up to all places where there is a possibility to fall for the personnel who works at heights, and allows to be saved uninjured from a falling when the personnel is connected to it. Permanent life lines is designed to provide the personnel’ s safety, who is working at heights, unconditionally and uninturruptedly. The system fixed to the roof with anchorages prevents a probable injury by damping the impact on the falling person with the shock absorbers.