Nothwithstanding that the subject has been discussed many times, and there are many similar threads floating around in cyberspace, I understand there are exceptions to the rule that X-rays are generally safe enough for film. I've been reading that there are checkpoints outside the US that do not permit hand inspection, and the X-rays may not be quite so harmless, either. So far, I've read that two of those places are said to be DeGaul airport in Paris; and the airport in Helsinki. Since my wife and I will be going through both of those in a few months, this subject is of interest to me. It seems to me that asking for a hand inspection in places where it is offered, will help to reduce the cumulative effects of mandatory X-rays in other locations.
It would be worthwhile to have contributions that will increase out knowledge of the higher risk checkpoints.
For what it is worth, I used to be a road warrior, flying twice a week, every week for seven years, to the tune of some 150,000 miles per year or so. I have found that although the TSA says you can 'request' a hand inspection, and in most places you will get one, in some places you will not, and they will not discuss the issue with you. The places where this refusal occurs appears to be arbitrary, as I have had TSA goons, er, I mean agents, refuse one week and cheerfully agree the next in the same airport.
I tried, once, bringing the printed webpage with me that shows that they will hand-inspect upon request. The TSA supervisor to whom I spoke asked me if I would like to be arrested. I took that to mean that they would do as they bloody well pleased.
I know that some here have
'never had a problem' with hand inspections upon request, since we have, as mentioned, had this thread about 10,000 times already. I flew more per year than most do in their lives for quite some time and I occasionally did have problems getting hand inspections. Your results may differ.
As to x-ray machines outside the USA, I have also heard that some are more powerful than others. I do not have any personal knowledge of that.
I will say that in all my traveling, I never saw damage to my film that I could put down to radiation damage. None.