In certain cases of extreme urgency requiring a very rapid response, the rescuer can access the victim by descending on one rope. Once the emergency has been addressed, upward evacuation can be secured with two strands of rope.
WARNING: before using this technique, make sure to minimize the risk of rub points or rockfall that could damage the rope.
Before descending, remember to keep the end of the rope at the top anchors for setting up the haul system.
Precautions during hauling
– The ASAP must be installed on the haul strand to provide a backup should either rope strand fail.
– Beware of rubbing between the moving haul strand and the anchor strand, which is stationary. To the extent possible, the two strands of rope should follow different paths.
WARNING: the weak point of this system is the risk of a rock severing the rope very close to the I’D or ASAP.
In this worst case scenario, the device should lock onto the rope very close to its severed end, which presents a risk of releasing the load.
If there is a risk of rockfall, it is recommended to use another technique or to use a second safety rope.
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