They require that you fasten the seat belt during take-off, landing, and turbulence. They recommend that you always fasten the seat belt when seated while the aeroplane is in motion. Fair enough.
They require that you do not fasten the seat belt while the aeroplane is refuelling, though.
Why? I assume that some mishap during the refuelling process will propel all passengers, buckled-up or not, around the airfield in a pretty nasty way. Is the assumption that there might still be time to leave the aeroplane in an orderly fashion in such an emergency, but not enough time to open the belt?
Any insights and considered thoughts will be gratefully received.