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Choice of Petzl carabiner for attaching a descender with a safety gate (I’D S, RIG, STOP…) to the harness

Written By: Lance Piatt

Key issues and risks

When the rope is taut, the carabiner and the device are held in position by the tension.

But when the rope is slack, the device and its carabiner can move about and become poorly positioned. So there is a risk of rubbing on the sleeve, or of cantilever loading between the device and the harness attachment point.

 

 

 

The most important risks to consider

Recommendation on carabiner and accessories

– Use an Am’D carabiner and a CAPTIV bar

– Choose a locking system suited to your use

Why this choice?

Am’D

The asymmetry of the D shape allows for good load distribution and helps resist carabiner rotation. For this use, there is only one device to attach, so a wide opening and high capacity are not necessary.

CAPTIV

  • On devices with a safety gate, the rope can be inserted without detaching the carabiner, so it’s possible to fix the device on the carabiner with the CAPTIV bar.
  • The CAPTIV limits poor carabiner positioning.
  • The carabiner is held in the position chosen by the user, for example with the locking sleeve on the moving side-plate side of the I’D.
  • The remaining risk of the locking sleeve rubbing against the harness attachment point must be monitored by the user. It is more or less important depending on the situation and locking system used
BUY PETZL CARABINERS

Precautions for use

  • Regularly verify that the carabiner stays loaded on the major axis, especially when it is reloaded after having been unloaded.
  • With an auto-locking carabiner, check at each opening and closing that the sleeve is completely locked.
  • Install the carabiner with the sleeve facing yourself, (moving side-plate side), to avoid accidental pressure on the locking sleeve from the structure, in case of tight passages or false moves.
  • Avoid any pressure or rubbing that could damage or unlock the locking sleeve, and/or cause the gate to open.
  • At work, use a second belay system in addition to your progression system.

 

 

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Peace on your Days

Lance
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About The Author:

Picture of Lance Piatt

Lance Piatt

Beginning his career in the rescue and rigging world as a “blue collar” SAR member with Deschutes and Jefferson County teams. Lance Piatt owns and operates Red Ibex Solutions, a sales and marketing wheelhouse blending rope rigging education and exquisite imagery with equipment knowledge and understanding; housing Rigging Lab Academy and Rescue Response Gear… Lance is producing high-end video education, working with several experts and instructors to produce unique series of “how to videos” and courses for rope rigging: Such as; the first ever full-length rescue training DVD, 'Tower Rescue', released in fall of 2005. As well as a series of scenario-based rescues ranging from cave rescue to cliff rescue.

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