Document ID: chunk:federal_register_of_legislation:F2016L00425:body:0:p24
Version: federal_register_of_legislation:F2016L00425
Segment Type: other
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Character Range: 60351–63002

onto the building or structure (which is called 'swing back': see Figure 24).
Swing down can occur if the lanyard slides back along the perimeter edge of the roof until it is vertical. When this happens, the person may hit the ground, or the lanyard may break as a result of its contact with the edge of the roof. Measures to address 'swing down' include:
    * the installation of guard rails
    * placing the anchorage point at a right angle to the position of the lanyard at the perimeter edge (for example, by using a mobile anchorage)
    * the installation of a second anchorage point and belay devices (intermediate anchorages).

Figure 23: During 'swing down' the length of the lanyard and positioning of the anchor allow contact with the ground.

Figure 24: During 'swing back' the length of the lanyard and positioning of the anchor contact may allow the worker to hit the structure.

6.4 Anchorage lines or rails
Anchorage lines or rails are temporary or permanent fall-arrest systems, which can be installed
to provide continuous fall protection for persons using ladders or climbing towers. These can
be used on plant, such as tower cranes, as well as buildings or structures.
Safety considerations include that:

    * temporary systems comply with the AS/NZS 1891 series of standards
    * the locking device is attached to the frontal attachment point of the harness and the lanyard assembly is a maximum of 300 mm length
    * the point of connection onto the ladder by the climber is near the base of the ladder to allow the connection before ascending begins and also to provide continuous connection to the disconnecting point when at a safe higher level
    * free fall is limited to a maximum of 600 mm
    * permanent systems are of wire or rail construction and are installed according to the manufacturer's instructions
After a fall, remove the system from service and have it inspected by a competent person before
it is used again.
Figure 25: With the use of an anchorage line system, the person climbing has continuous fall protection by being attached to the anchorage line and harness.

Double lanyards
An alternative to anchorage lines or rails is the use of a double lanyard (also known as a twin tail
or 'Y' lanyard). Figure 26 shows how the use of a double lanyard means that the person climbing can always be connected to the ladder or structure.
However, double lanyards are easy to misuse—there should be no back hooking, they should
not be wrapped around the body or passed between the legs, the chest connection should never be higher than the highest attachment point, they are not suitable for frequent use