Descending a main line with back up on a safety rope
Access from above
This type of access minimizes the risk of a fall, because the worker is supported by a rope throughout the descent.
Even so, the selection of anchor points and the positioning of ropes constitute the most critical aspects of the installation of the safety system.
Whether the descent is vertical or inclined, with or without support from the structure or the terrain, the solutions described here help ensure a simple and protected descent. The worker can secure his position on the working rope and climb back up the rope if necessary.
Access from below
access to the work site from below often presents problems. Many techniques are posible:
Installing a rope with the help of a crossbow or similar piece of equipment. This techniqe greatly reduces the risk of a subsequent fall.
By using mountaineering climbing techniques; in this case, the risk of a fall exits: the worker could fall to the ground or remain suspended in the harness. Once the rope has been installed by the leader, the other workers can climb the structure with protection from his rope, which is always kept tight.
On the rope without support from the structure
Changing over from descent to climbing
Short ascent with 3:1 mechanical advantage system to minimize effort
Descending a main line with back up on a safety rope
Load-distributing anchors
Pay attention to the angle
Separate anchores
Avoid rubbing against abrasive surface of sharp edges
