GWO Basic Safety Training V14.0
2021-04-01_TS_BST_V14
𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝐹𝑎𝑙𝑙𝑒𝑛 𝐿𝑒𝑛𝑔𝑡ℎ 𝑜𝑓 𝑙𝑎𝑛𝑦𝑎𝑟𝑑 ,
𝐹𝑎𝑙𝑙 𝐹𝑎𝑐𝑡𝑜𝑟 (𝐹𝐹) =
using the maximum allowed lanyard of length 2.00 m and a fall of 1.00 m
1.00 𝑚 2.00 𝑚 ,
𝐹𝑎𝑐𝑡𝑜𝑟 (𝐹𝐹) =
𝐹𝑎𝑐𝑡𝑜𝑟 (𝐹𝐹) = 0.5.
During the evacuation exercises in this module the anchor points used for the attachment of fixed length fall arrest lanyards must be high enough above the ground, or structure below them, so that in the event that a person experiences a fall the shock absorber in their fall arrest lanyard can fully deploy and prevent them from contacting the ground (or structure directly below the anchor point). During the evacuation exercise the participants must be able to experience a minimum amount of descent using an evacuation or rescue device to ensure that they gain the experience of the speed of descent using these devices. This can be achieved by having the participant descend from a minimum height using a rescue or evacuation device. To ensure that for all fall protection equipment that may be used that there will be enough clearance below the anchor point, and to ensure that the participants can experience a descent of sufficient duration for meaningful learning transfer, the GWO recommends that the anchor point is a minimum of 6.75 m (22.1 5’) above the ground or structure directly below the anchor point. The recommended 6.75 m (22.15’) clearance under the anchor point is explained in detail in Annex 3.
If a training provider deviates from the recommended anchor point height of 6.75 m (22.15’) to a lower height, then the following additional control measures must be in place,
The training provider shall document a risk assessment for the lower height, this shall include calculations for the equipment to be used during the evacuation exercises, the calculations shall; i. use the value for shock absorber elongation that is provided by the equipment manufacturer, and, ii. demonstrate that the equipment will prevent the person from coming into contact with the ground or structure directly below the anchor point, and, iii. use a formula provided by the equipment manufacturer or national legislation that is for the purpose of calculating anchor point clearance height or, where no such formula exists, use the formula in Annex 3, Section 4, and,
the potential fall factor shall not exceed 0.5, and, participants must experience a descent from a platform that is a minimum of 4.5 m ( 14.76’) above the ground.
Global Wind Organisation www.globalwindsafety.org
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