3T and AGR (Advance Guardrail)
What is the 3T method and what is Advance Guard Rail (AGR)?
3T stands for Through the Trap and it is one of two processes used for fall protection on mobile towers recommended by PASMA and the HSE. The other process is the use of Advance Guard Rail (AGR) systems. If you don’t know what the 3T method is or how Advance Guard Rail (AGR) systems work and you are involved in the building of mobile towers or you have responsibilities for the use of mobile towers, then you need to get PASMA trained!
Should you use the smallest end frames at the top or bottom of a mobile tower?
If you are building a mobile tower using the 3T method, always use the smallest frames at the base e.g. start the tower with 2 rung frames at the base followed by 3 rungs frames and then 4 rung frames on top. This will allow you build the tower safely using the 3T method ensuring that the guardrails may be fitted at the correct heights through the build.
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