Air Force (Plumber) Water and Fuel Systems Maintenance Tech school?

Hi, I was just trying to figure out how long the tech school is for this job and where it might be? Any help would be great. I do have college credits already I don't know if they actually do anything with tech school I have 30 "college" credits and I think the only thing that might co-work with it is some welding classes. Everything else is kinda General-Ed etc...