Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
When back-up devices are dynamically tested in accordance with standards, the tests 2.7.7.2 only represent a (vertical) free-fall. In certain circumstances, an uncontrolled descent may not be a free fall and the back-up device may not activate, e.g. if the user loses control of the descending device during descent, if a fall is impeded by the structure or while descending at an angle other than vertical. Back-up devices should be selected which are known to perform in such a way that an uncontrolled descent at all angles likely to be encountered during use would be prevented or minimized.2.7.7.3 When used in accordance with the manufacturer’s instructions, the combination of back- up device, device lanyard, connectors and harness should be able to limit the force on the user to a maximum of 6.0 kN in the event of a working line failure.NOTE6 kN is a recognized threshold of injury.