Techniques already applied in the fields of climbing and caving, are followed in work at height and difficult access points (i.e. the work of any object having an acute risk of injury from a fall). These techniques were developed under strict rules, regarding the training of workers, the type and the quality of their equipment. Nowadays, both the European and the Greek legislation fully define the requirements for the safe handling of work at height.
Work at height is divided into four main categories:
Work at height in a limited range of motionThe worker is using a safety harness attached to a fixed anchorage point. Direct fall is prevented, but there is some movement restriction.
Work at height withincreased motion as a necessity, that includes some risk fallingThe worker is using a safety belt attached to a containment system fall that allows freedom of movement. There is a potential drop, which is controlled and absorbed by the damper kinetic energy.
Work at height with the necessity of releasing the handsThe worker is using a safety belt attached to a containment system fall and a stabilization strap position, through which, he can release his hands.
Work at height using ropesThe key feature of these techniques is the use of two ropes with a separate anchorage system, each. The first rope is a working tool that promotesthe worker and the second is a means of security in case the first rope fails.
Every job requires at least two employees, so that the processes can be overseen in detail, especially if there is necessity for any emergency assistance.