Backup device in a rope access system - Petzl Luxembourg

Backup device in a rope access system

(EN 12841 A: rope adjustment device for the safety rope)


  • Carefully read the Instructions for Use used in this technical advice before consulting the advice itself. You must have already read and understood the information in the Instructions for Use to be able to understand this supplementary information.
  • Mastering these techniques requires specific training. Work with a professional to confirm your ability to perform these techniques safely and independently before attempting them unsupervised.
  • We provide examples of techniques related to your activity. There may be others that we do not describe here.

In a rope access system, the worker moves along a work rope.

The ASAP is installed on a safety rope and connected to the A (fall arrest) attachment point of the harness. Its role is to arrest the fall in case the primary belay or positioning system fails.

Under the EN 12841 standard, the ASAP certification was conducted using only EN 1891 type A semi-static kernmantel ropes. The rope diameter that is compatible with each ASAP model is specified in the Instructions for Use for the device.

The use of other ropes has not been tested, and thus falls under the responsibility of the user.

Back-up device