Singing rock SIR Manual Del Usuario página 17

closed position (fig. 2), and restart the process. Use a second braking
carabiner to lower from a fixed position (fig. 4/B). Owing to the
construction of the device there is no need to additionally secure the
device for prevention of accidental uncontrolled descents. For short
ascents install a rope clamp in the working end of the rope above the
descender device. While lifting yourself on the rope clamp, pull the
free end of the rope exiting SIR. Never allow any slack between the
rope clamp and the descender device (fig. 4/C).
Figure 5: ACCOMPANIED DESCENT
This method of evacuation may only be adopted by rescuers
specifically trained in this technique. No impact loading is tolerated.
The rescuer fastens the descender to his harness and connects the
injured person by means of an additional lanyard. There is no need
of a redirectional carabiner for the free end of the rope. For all rescue
manoeuvres the use of gloves is recommended.
The rescuer and the injured person must be secured with an additio-
nal independently anchored safety line.
WARNING: With speeds above 1 m/s during rescue operations, the
descender may get hot enough to damage the line.
Figure 6: HAULING AND PROGRESS CAPTURE SYSTEMS
Hauling from a fixed position with SIR is easiest done either with a 1:1
counterweight or for heavier loads by means of a 3:1 pulley system
(fig. 6). Ergonomically easier pulling from above may be attained by
employing another redirectional pulley on the free end of the rope.
Transition from ascent do descent is done by removing the pulley
system, clipping the rope in a redirectional carabiner above the SIR
and starting to lower (fig. 4/B).
Figure 7: RIGGING FOR RESCUE
Double rope length should be employed.
Figure 8: RESTRAINT
Anchor a restraint system perpendicular and away from the point
on the edge where the workplace is. There should not exist any
possibility of a fall over the edge. Therefore trim the line in the SIR to
the right length to implement this.
Figure 9: WORK ON WIND TURBINES
Use one SIR as a descender device (EN 12841) and the device for the
positioning (EN 358) around the blade.
Figure 10: TEMPORARY ANCHORING AROUND A STRUCTURE
To construct an anchor, pass Lanyard WP installed into Lory around
a structure and clip both connectors into the next element of the safe-
ty chain (fig. 10A). Ensure that the structure the anchor is constructed
on has sufficient strength.