Portable backup power - natural gas hook-up

[Andrew S.]

I'm considering the purchase of a backup power generator (we are in the land of the occasional tornado, hurricane and ice storm here and outages aren't uncommon).  I have picked a portable tri-fuel model which I intend to run mostly on natural gas.  I have a gas-line nearby to where I will want to place the generator but here is the question.  What I would like to install is a quick-release gas fitting that can snap on  the generator when needed.  Are there any codes/safety concerns to consider when tapping into an existing line (no, I would NOT do this myself - I would hire a pro)?  I assume there would need to be a shut-off valve installed to turn off the quick-release line independently? Anything else?