(1) "Containers" means all vessels including, but not limited to, tanks, cylinders, or pressure vessels used for storage of liquefied petroleum gases.

(2) "Contractor" means a person or company engaging in the installation, servicing, repairing, adjusting, disconnecting or connecting piping to bulk storage tanks, pumps, compressors and equipment for gas systems.

(3) "Cylinder exchange company" means a business which provides filled liquefied petroleum gas cylinders for purchase or exchange.

(4) "Dealer" means a person engaging in the installation of liquefied petroleum gas systems or in the manufacture, distribution, sale, storing, or transporting by tank truck, tank trailer, or container of liquefied petroleum gases or engaging in installing, servicing, repairing, adjusting, disconnecting, or connecting appliances to liquefied petroleum gas systems and containers.

(5) "Installer of appliances and equipment" means a person engaging in the business of installing, servicing, repairing, adjusting, disconnecting, or connecting appliances and equipment to liquefied petroleum gas systems or containers.

(6) "Liquefied petroleum gas" means material composed predominately of hydrocarbons or mixtures of hydrocarbons, including propane, propylene, butanes (normal butane or isobutane), and butylenes.

(7) "Reseller" means a person engaging in the resale of liquefied petroleum gas by filling cylinders of not more than one hundred pounds capacity of liquefied petroleum gas and who owns and operates this business separate and independent of a dealer except that the reseller may purchase liquefied petroleum gas from a dealer as an independent contractor.

(8) "Systems" means an assembly of equipment consisting of the container and any device which is connected to the container for the utilization of liquefied petroleum gas.

(9) "Transporter" means a person engaging in the transportation of liquefied petroleum gas for hire only in quantities greater than three thousand five hundred water gallons from pipeline terminals to bulk plants.

(10) "Utility gas plant" means a fuel gas distribution facility owned or operated by a public utility or municipal or local government authority that uses liquefied petroleum gas to supplement natural gas supplies when necessary.