I have a pump and have traveled twice by air in the last year. There is no "procedure". Just wear your pump, don't ask anyone's permission and carry on. When you get to the airport, you go through security. As you go through the gate, you can either wait till the pump alarms the gate (which it may not) or you can tell them before you go through, "I'm wearing an insulin pump." They will swab the pump for explosives. It's ridiculous but just smile benignly while they go through the ritual and you will be through in ten seconds. In fact, they are not permitted to discriminate against people with a disability, so of course you cannot be refused the right to wear it or use it on board. If it has a remote control, you may have to turn it off during landing and take off (just the remote, obviously) but I don't know for sure about that.