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Five Work-at-Height Techniques
When working at height, it is possible to choose between one or more of the following techniques, depending on the risks, the features of the structure, and on the type of the activity to carry out. Figures represent non-exhaustive examples of possible types of systems.
Technique used to prevent a worker from entering a fall risk area by means of the limitation of the length of the connection between the anchor point and the user’s harness.
Technique used to position a worker securely in a fall risk area without creating a risk of falling. Usually the connection is adjustable in length. It is essential to give special consideration to the need of an additional fall-arrest system as a backup connection.
- Fall Arrest
Technique used to catch and reduce the force of a fall from heights. The system must include a full body harness and a connection which features an energyabsorption function.
- Rope access
Fall protection system that enables the user to get to and from the workplace in tension or suspension in such a way that a free fall is preventable or arrestable. Rope access systems always include a working line for movement by means of ascenders and descenders, combined with a safety line equipped with a fall-arrest device that can intervene in case of failure of the working line.
A personal fall protection system by which a person can rescue themselves or others and which prevents both rescuer and victim from a free fall. It allows the evacuation from the working place to a safe place by descent and/ or ascent. A rescue system can include only one line: a secondary safety line is mandatory during rescue training. A rescue system and the procedure to carry it out safely must always be foreseen for all work-at-height activities.
Conformity marking to European directive 2016/425 The European Commission has published a number of standards for controlling the design and use of fall arrest and rescue equipment. These are available at www.sis.se.
|EN 341||Rescue descender devices.|
|EN 353-1||Guided type fall arresters on cable or rail.|
|EN 353-2||Guided type fall arresters on rope.|
|EN 355||Energy absorbers.|
|EN 358||Work positioning systems.|
|EN 360||Fall arrest blocks – Retractable type fall arresters.|
|EN 361||Fall arrest harnesses – Full body harnesses.|
|EN 362||Work connectors.
|EN 363||Personal protective equipment against falls from a height.|
|EN 364||Test methods for personal protective equipment against falls from a height.|
|EN 365||General requirements for instructions for use, maintenance, periodic examination, repair, marking and packaging.|
|EN 388||Protection gloves against mechanical risks.|
|EN 397||Industrial safety helmets.|
|EN 564||Acessory cords.|
|EN 567||Rope clamps.|
|EN 795||Anchor devices.|
|EN 813||Sit harnesses.|
|EN 892||Dynamic ropes.|
|EN 1496||Rescue lifting devices.|
|EN 1497||Rescue harnesses.|
|EN 1498||Rescue loops.|
|EN 1891||Low strech kernmantel ropes.|
|EN 12492||Helmets for mountaineers.|
|EN 12841||Rope access systems - Rope adjustment devices.|
|EN 50365||Electrically insulating helmets for use on low voltage installations.|