I have never had one re-certed, as by the time I needed to have it re-certed,,,, I no longer owned the triailer it was mounted on.
But I've seen it done,, As one of the first responders said. A wholesale shop, the kind of propane dealer with a BIG tank farm and trucks that go out to the filling stations and campgrounds and so on.
That visual inspection,,, Is supposed to be done (in part) every time the tank is filled.. But they only stamp it when it's a re-cert technician doing the inspection for money. Just so you know.
(I was interneting in the family center the other week while a re-fill technician certification class was covering that topic)
Question: What happens when you mix the proper amount of propane with air and add a spark.
My answer: You land one county over.
(They were checking the exam so I did not give away anything save a sense of humor) Instructor... agreed.
