When using power rollers with sub-arc or semi auto GMAW, FCAW etc. I've always rolled the vessel shells or pipe away from me. When our shop purchased a new sub arc, the salesman/technician set it up rolling towards the operator. I mentioned my experience of always going the other direction and not knowing why? He claimed it was so the operator could have easy visual access to the weld and make adjustments quickly. Having thought about it some, I remember a couple of incidents in the past where the ground clamp became entangled around the piece and rolled it off onto the floor. Had the rotation been reversed, it could have possibly trapped the operator against the machine/mast and who knows what!. I toured some other local shops and sure enough, they were rolling into the operator. These other facilities had also bought their equipment from the same distributor....
Which way do you roll? Is this a safety or non-issue???