NEW Petzl NAO® RL
August 22, 2022
The risk of falling is a key concept to master when working at height. In this context, calculating the clearance for each specific work situation is vital to worksite safety. See below for the criteria required to calculate the clearance, and how to optimise it.
Clearance is the minimum amount of clear space below the user that prevents the user from hitting an obstacle in case of a fall.
This minimum amount of clear space takes into account the length of the system, the tearing of the energy absorber, an average distance between the harness attachment point and the worker's feet (1.5 m) and a safety margin required by the standard (1 m).
The clearance value varies depending on the work situation. The operator’s position relative to the anchor, the length of the system and the operator’s weight are the main factors in its determination.
Use This Tool to calculate clearance and get more information