The reccomended back up device for back is the petzl asap they. Shunt systems for the management of hydrocephalus hydrocephalus association. The petzl shunt is a mechanical replacement for selfjamming knots like the prusik and the machard. Positioned below a descender, the shunt acts as a backup belay for a rappel descent. In this account of his life, the author has examined every detail of the drivers life from his very earliest days to the last hours of his existence as well as the lives of those he left behind. It concerns me that the body is made out of an aluminum shell with a small steel reinforcement band and that it might pry open way too easily and pull the rope out.
As a measure of precaution, petzl recommends not to use the petzl shunt as a back up device in rope access whilst towed by a cord. Simple to use and ergonomic, the rescucender is an openable camloaded rope clamp designed for use in haul systems as a. Industrial rope access investigation into items of personal. My only real concern with it is that it is possible to load the rope into it and forget to activate the cam it can be locked open, were you to do this and climb youd get a very nasty shock when you tried to weight the device.
Mbs is always a lower and more conservative number. We wanted to see if we could create a similar outcome dynamically by placing a petzl shunt as a back up device directly above a knot and then failing the main line with a rescue load back up rope 10. Used below the rappel device, the shunt works as a rappel back up and replaces. Petzl deemed the shunt unsafe due to its ability to be defeated by the user when used with a tow string and lanyard. Singlehand and foot ascenders available for left and right use to rope clamps and grabs, as well as a doublehandled ascender and chest ascenders. Iratas new shunt statement revised 2012 rope access forum.
Since 1999 petzl has provided specific information regarding the special use of the petzl shunt as a backup device for industrial rope access. Various frictionreducing pulleys are used in ropeaccess and rescue applications. Rope access and its safety considerations in the offshore industry tjebbe roestenburg managing director. In 2009 petzl issued a statement recommending that only professionally trained irata operatives should use the. The ascension handled rope clamp is designed for rope ascents and features an overmolded grip and ergonomic upper part for a comfortable and powerful grip when pulling with one or two hands. In electronics, a shunt is a device that creates a lowresistance path for electric current, to allow it to pass around another point in the circuit. To be honest i usually just take the shunt off and of course the ascender to abseil down. The classic petzl shunt is an emergency ascender that replaces a traditional prusik knot. The petzl shunt acts as a back up device when abseiling on either a single rope or double ropes of the same diameter. The asap is a great device and rated for a two person load when used with an absorbica lanyard. Used below the rappel device, the shunt works as a rappel backup and replaces. The leveen shunt a technique for testing shunt patency bonnie j.
Our testing here at ropeworks has given us a strong preference for the petzl shunt. As a firefighter we stick with traditional belay, but as a sprat rope access technician we utilize devices like the asap on a daily basis and often rig that line through a dcd so if someone locks up on it after a mainline failure you can either continue to lower raise them or transfer the load. For use on single rope 10 to 11 mm or double 8 to 11 mm. As part of the rei coop family, were dedicated to making websites and mobile apps that help outdoor enthusiasts connect, share information and. Petzl shunt the petzl shunt is the most common rope access backup device in use worldwide. James hunt is remembered more for his girlfriends and wild personal exploits than for his skills in a race car. The petzl shunt is designated as a rope clamp in the european. It offers you an additional safety back up when abseilling and will grab. It offers you an additional safety back up when abseilling and will grab onto the rope when pressure is released. Description easy to install on the rope smooth clamping surfaces wont damage rope may be used to ascend single or doubled rope specifications material.
The shunt works as a rappel backup and is used below the rappel device. Previous petzl statements required special training for this specific use of the petzl shunt. Pdf hydrocephalus is a common entity in neurosurgical practice affecting both adult and pediatric populations. Find the perfect gear to equip customers and employees with the fall protection they need when working at heights. Jan 17, 2012 petzl have recently published a notice on their website stating that they no longer recommend the use of a petzl shunt as a rope access back up device.
It locks onto the rope as soon as you release it and foll. Oct 23, 2010 how to use a petzl shunt an abseil safety device that can also be used as an ascender. The petzl shunt was originally developed as an abseil backup for srt users who needed something more reliable than a prussik however it has long since been pressed into service for all manner of other uses most notably self belay and as an ascender. Mar 24, 2010 spealean the importers of petzl has announced that the petzl shunt is not designed for industrial rope access use as it has never been test for the use of industrial rope access standards. Shunt, cahier, warning read online or download pdf petzl shunt user manual. Spealean the importers of petzl has announced that the petzl shunt is not designed for industrial rope access use as it has never been test for the use of industrial rope access standards. And if you dont like the prusik knot, you can get two of these and use them to ascend on static ropes. The thermal mass of a shunt includes its resistance element, its end blocks, the current cable lugs and connection hardware, and the cables themselves. Variation of voltage across shunt resistor across several frequencies range of standard high current shunt resistors from bourns i 1 50 r 1 l 1 0.
Wahner mayo clinic and mayo foundation, rochester, minnesota a modification of the test procedure for evaluation of the peritoneavenous shunt is described. Rizzi nasa langley research center, hampton, va 23681 abstract in the last years spie symposium, we reported results of an experiment on structural. I acquired my petzl shunt, version b from bob elron at the 2017 nss convention. It is the most widelyused backup device in the rope access industry throughout the world. The lack of any described methods or special training therefore makes these previous petzl statements obsolete. The smooth clamping surface wont fray or damage ropes, and is compatible with single 1011mm and double ropes 811mm. Selfbelaying device in the descent on single or double ropes. The shunt uses a stamped aluminum frame that wraps around one or two ropes.
Positioned below a descender, the shunt acts as a backup belay for an abseil descent. I have generous experience with both and i feel the fisk is the better option for tower rescue because it can be used with one hand leaving the other free to help you negotiate around obstacles that may be protruding from the tower, etc. Detailspetzl shuntrappel back up ascender used below the rappel device, the shunt works as a rappel back up and replaces friction knots like the prusik. Petzl shunt on single rope device type smooth profile cam rope grab failure load 230 kg mode gradual slippage mechanism gradual controlled slippage with minimal damage to either rope or device. K by using a highly sensitive highspeed infrared camera in an online averaging lockin thermography system. Uncontrolled descent using the petzl id and shunt the id would not slow the descent enough during a rescue, details are in the report but both rescuer and casualty had broken ankles from hitting the ground too hard. It locks onto the rope as soon as you release it and follows your descent when you press on it.
A shunt must stabilize at each temperature current level. Petzl statement on the use of petzl shuntjanuary 10th 2012. All product categories, belay devices, rope grabs tag. The shunt has smooth clamping surfaces which wont damage your rope. At present, the back up system incorporating the petzl shunt is effectively. The leveen shunta technique for testing shunt patency. Ever try loosening a prusick under tension i always carry a prusik, but i use my shunt. Aug 05, 2014 petzl statement on a special use of the petzl shunt in the light of incidents and accidents, indicative tests have been conducted, including but not limited to a workshop in march 2011 with ropeaccess experts present. Wild country ropeman a smart rope clamp alternative to. Pdf shunt detection and characterization with fluorescent. The ascension handled rope clamp has a wide lower hole for easily attaching two carabiners for. The reccomended back up device for back is the petzl asap they work great and very effective and hands free. If the shunt is loaded, i can put my belay plate on the other rope, then take the weight on to that rope in order to unload the shunt not normally difficult on the grades i climb up to vs on this system. All the components are part of the latest generation of kong blockers.
Petzl statement on a special use of the petzl shunt context. I usually put my left hand around the entire shunt and this holds the lever in, just like you would hold a prusick when descending. The fixe pulley is lightweight, compact, and quick to install on the rope. The detection limit of infrared thermographic investigations can be improved down to 10. Petzl actually ok its use as self belay device, unlike the shunt. Petzl have been monitoring the use of the petzl shunt in rope access since 1999. Drop testing of rope access backup devices special thanks to pmi, camp, rhino staging, and andrew blackstock. At present, the backup system incorporating the petzl shunt is effectively. I have one, but i dont use it much anymore and i never use it for tr solo. Multiuse rope clamp specifically conceived for climbing, caving, rescue, work on height, canyoning. Write down the results of your assessment using a clear and easily readable. As part of the rei coop family, were dedicated to making websites and mobile apps that help outdoor enthusiasts connect, share information and get out into the places they love to play.
At higher current levels, a shunt may require more than an hour to reach thermal equilibrium. Siame video pamatysite pagrindinius skirtumus tarp saugos blokantu, kurie naudojami ant antros virves, skirtumus, bei pranasumus. The origin of the term is in the verb to shunt meaning to turn away or follow a different path. Rope access and its safety considerations in the offshore. Backup rope clamp used below the rappel device, the shunt works as a rappel backup and replaces self jamming knots like the prusik. The ropeman can also replace your shunt while doing rope access work since you can slide it either up or down on your second rope. Petzl shunt 2012 petzl releases statement on shunt use as a rope access back up device shunt should not be used while towed by a cord, as a rope access backup device if the shunt is used with a lanyard, this falls outside. The shunt replaces selfjamming knots like the prusik and works on single and double ropes. We use the petzl id for general rope access work but if i have to perform a rescue you better believe im pulling out the fisk. Petzl statement on a special use of the petzl shunt. Petzl dc shunt fall arrester manufacturers in india.
Simple to use and ergonomic, the rescucender is an openable camloaded rope clamp designed for use in haul systems as a tractor or progress capture device. Applications for reproduction should be made in writing to. Shunt complications, early and late, are also discussed, focusing mainly on. Shunt petzl pdf used below the rappel device, the shunt works as a rappel backup and replaces friction knots like. Our company is dedicated to providing the very best quality products and service. Ukc forums ropeman vs mini traxion for self belaying. Post a reply to does anybody regularly use a petzl shunt. We strive to be the best in the industry and innovate our products. Fast despatch as standard, next day delivery available. The device runs freely down the rope whilst the clamp handle is being held but brakes if body weight comes onto the device. Designed to block on every rope even frost and muddy. Click on the following link to get more information about. Self belaying firehouse forums firefighting discussion. A mechanical replacement for selfjamming knots prussik, machard.
Jun 10, 20 siame video pamatysite pagrindinius skirtumus tarp saugos blokantu, kurie naudojami ant antros virves, skirtumus, bei pranasumus. With the shunt, you can fall onto it in a certain way and it wont cam, and you can prevent it by extending it, its all in the user guide which you can download from petzl. Dec 21, 2012 iratas new shunt statement revised 2012. Backup rope clamp used below the rappel device, the shunt works as a rappel backup and. This is a work at height, fall arrest device it appears to work in a similar manner to the petzl asap but with the ability to lock it off in place until the asap this may cover the recent petzl statement that the no longer recommended the use of a shunt in the work place as a back up device in descent while towed by a cord, as a backup device in rope access. The shunt is the fail safe in case you drop your rope, slip or hit your head and are unconcious. The lack of any described methods or such special training therefore makes these previous petzl statements obsolete. Used below the rappel device, the petzl shunt works as a rappel backup and replaces selfjamming knots like the prusik.