EN
ZHEN 358:2018
Belts and lanyards for work positioning or restraint
Dynamic Performance
Work positioning belts/lanyards are subjected to a drop test to generate a shock load on the product. A lesser force is applied to the work positioning belt/lanyard compared with fall arrest harness attachments as the possibility of a period of free-fall is significantly less in use. Work positioning belts/lanyards are subjected to a 1 metre drop and in both cases, the belt/lanyard is required to safely arrest the fall of the test dummy or test weight following the drop.
Static Strength
Belts are first subjected to cycling between no force and 1kN 5 times, followed by 5kN tensile force to assess slippage of webbing through buckles. The force is then increased 15kN, which is applied and held for at least 3 minutes, to ensure the breaking strength of the product is in excess of the force specified by the standard. A work positioning lanyard is assessed in the same way but using a force of 4kN for the slippage test.
Corrosion Resistance
Metallic components used in fall protection equipment are subjected to a neutral salt-spray test intended to prove a minimum resistance to environmental corrosion (specifically rust). Products are held within a sealed chamber, which is filled with a salt-water mist, which can induce rust in unprotected metals. Products are subjected to 48 hours exposure and examined for rusting and function afterward.