I would stick to my guns and do what you've been told to do by whoever provided your equipment, and point out to them that as your life depends on it you'd rather not take the risk, thank you. I had this problem at East Midlands, and was told that the gentleman in the scanner right now has got a heart pacemaker and he's fine. I said I've been told not to and got out my DSN letter. The chap didn't even bother to look at it, just fetched the supervisor who agreed to take the pump around the scanner and do her explosives swabs the other side.
However if it helps, I've been told by a techy person at Accu-Chek that it's only when equipment is switched on that scanners, x-Rays etc cause problems, so your pump is fine to put through anything like that if you take the battery out first, and that all your basal settings etc should stay in it for a while (he said several weeks, but I'm a bit suspicious of that myself!) without power.