A belay system must stop a falling load in case the work system breaks or fails. The belay rope must ” follow ” the load, to avoid creating any slack that would increase the fall distance if the work rope fails. Belaying a hauling operation When hauling, belaying poses no technical problem. It is …
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 done at a “normal” level of safety with two ropes. Precautions prior to descent: Make sure to minimize the risk of rub …
Drop loop haul on the PETZL MAESTRO for urgent rescue Read More »
The Petzl MAESTRO handle has a small hole for attaching a cord (e.g. AIRLINE cord). Buy The Petzl Maestro Warning: any excessive pulling on the handle can cause an uncontrolled release.Verify that no external object could accidentally pull on the cord. WARNING: use only a lightweight cord to operate the handle. In certain situations, a …
Remote control of the PETZL MAESTRO handle with a cord Read More »
All maneuvers must be done on two independent rope systems. These two systems can work in parallel (two haul lines) or separately (work rope and belay rope). 1. Examples of hauling with work rope and belay rope. All hauling and positioning forces are concentrated on the work rope. The belay rope is set up and …
Team Rescue Techniques for Hauling and Lowering with Petzl Maestro Read More »
There can be a big difference between the theoretical efficiency of a pulley system and its actual efficiency. Here are test results from the Petzl lab. 1. Efficiency depending on the device used at the head of the system. The force required to raise a 100 kg mass was tested under several configurations with different …
Pulley system efficiency tests with Petzl Maestro, I’d S, Pro Traxion and RollClip Read More »
After nearly 30 years of living the rope rescue and rigging life, I’ve climbed through changes, held fast to timeless truths, and sometimes dangled in the balance. Looking back, it’s clear the more things change, the more the thrill of the climb stays the same. People get roped into this world for all sorts of …
Clockwork Precision: The Art and Mechanics of Rope Rescue Mastery Read More »
A mechanical advantage haul system reduces the effort required to raise a load. The mechanical advantage obtained is based on the pulley effect. 1. The pulley effect If we consider a load suspended on a rope, the rope passing through a pulley above the user, with the user’s hand holding the rope on …
How to calculate mechanical advantage within a progression! Read More »
Okay. We’re here with Davis County search and rescue. We have a training scenario and we have some… A little bit of snow today. We have an injured hiker that’s fallen over the edge of this cliff here. We’re going to send a rescuer over the edge on a two-tension rope system. We’re using a …
Petzl Rescue Solutions And Petzl Technical Institute – The Spin Pulley Series Part 3 Read More »
In recent years, compact, lightweight pulleys have been used in tree care, tower work, construction, technical rescue, and a host of other applications. As you can see over the years, a variety of different designs and features have been developed, but for technical rescuers who have to rig life safety loads, the openable swivel pulley …
Petzl Rescue Solutions And Petzl Technical Institute – The Spin Pulley Series – Part 2 Read More »
WHAT YOU NEED TO KNOW ABOUT THE PETZL SPIN PULLEYS For rescue teams all over the world, having the most efficient equipment possible for whatever situation they may face, is an absolute priority. Released in 2020, the Petzl MAESTRO descender with integrated progress-capture pulley delivers exactly that. In addition, the family of SPIN pulleys rounds …
WHAT YOU NEED TO KNOW ABOUT THE PETZL SPIN PULLEYS Read More »
