Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
a) knot tied looselyb) knot setFigure 2.9 — Example of a stopper knot for use at the end of anchor lines (in this example, half a double fisherman’s knot)lines are not fully visible, the checks should be physical, e.g. by carrying out a descent from the top (preferable) or by pulling and shaking the anchor lines from either end.2.11.3.1.16 Where there are long anchor lines above a short drop, previously unloaded anchor lines may stretch suddenly when loaded, allowing a rope access technician to drop a distance proportional to the length of anchor line above, possibly causing him/her to hit an obstruction or the ground. In addition, if the working line were to fail at this point, the stretch generated in the safety line could result in insufficient protection, irrespective of the type of back-up device used. A solution is for the rope access technician to re-anchor both anchor lines and thus remove the problems of excessive elongation.