(a) No person shall transport, deliver, or handle liquefied petroleum gases or install any container or system, or connect any container to any liquefied petroleum gas system unless and until he or she shall have been certified by the Liquefied Petroleum Gas Board, which shall conduct an examination to determine whether he or she has sufficient knowledge and skill to perform the work in a safe and satisfactory manner.
(b) No certificate or permit shall be required for the storing and handling of portable containers or cylinders constructed in compliance with federal Department of Transportation regulations at cylinder exchange stations set up and established by authorized liquefied petroleum gas dealers as a means of furnishing adequate facilities for the convenient exchange of exhausted containers for fully serviced ones by their customers if:
(1) The water gallon capacity of any container does not exceed thirty (30) gallons;
(2) All cylinders are serviced by the authorized dealer at approved cylinder filling plants and transported to the exchange station by accepted methods;
(3) There is no sale of containers or their contents to the exchange station for resale to the user;
(4) The exchange station operator is properly instructed by the dealer in the appropriate safety procedures necessary for the operation of the station.