Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
g) ability to connect device lanyards and other devices.2.7.6.5An example of an appropriate standard for ascending devices is EN 12841, Type B.2.7.7Back-up devices2.7.7.1 Back-up devices are used to attach the rope access technician to the safety line. This is normally done by linking the back-up device to the user’s harness with a device lanyard. In the event of a failure of the working line or loss of control by the rope access technician, back-up devices are intended to lock on to the safety line without causing catastrophic damage to the safety line and also to absorb the limited shock load that might occur.