The reference here is about the refuelling not the refueller so your words relate to the task not the person. Simple question that goes back to the manuals. Who supervises the refuelling if there is a defect in the refuelling system?
I too am a LAME @ Qantas. I was indeed refering to the supervising the task not the refueller. I always supervise the refuelling (old school), seen too many f@#k ups over the years. Perhaps referring to the refuel manual wording would clear this up. The refueller is suppose to get clearance from the transit engineer before fuelling commences ie. if there are defects - this could be regarded as some sort of supervision.