With an airport baggage-screening machine, is it safe to line up bags in a continuous row which doesn allow the lead protection to be completely down when a bag is in the x-ray beam?
Judging by the experience of those who have measured radiation exposures around modern narrow scanning beam baggage security screening systems while they are continuously in operation, there is very little scatter from the piece of baggage being screened, so little, if any, radiation even makes it to the lead protection barrier.
