Okla. Admin. Code § 380:80-1-3
The following words and terms, when used in this Chapter, shall have the following meanings, unless the context clearly indicates otherwise:
"Alternative fuels" means fuels which result in comparably lower emissions of oxides of nitrogen, volatile organic compounds, carbon monoxide, or particulate matter or any combination thereof and includes CNG, LPG, LNG, methanol, ethanol, reformulated gasoline, biodiesel, hydrogen, and electricity.
"Alternative fuel engine fuel systems" means an object or objects mounted, installed, attached or otherwise placed upon or within a vehicle or vehicle trailer to supply or assist in the supply of an alternative fuel to an internal combustion engine or engines.
"ANSI" means the American National Standards Institute.
"ASME" means the American Society of Mechanical Engineers.
"ASME Code" means the ASME Boiler and Pressure Vessel Code.
"Automatic dispenser" means a CNG and/or hydrogen dispenser which is operated by a member of the general public and which requires transaction authorization.
"Building" means a structure with walls and a roof resulting in the structure being totally enclosed.
"BTU" means a scientific unit of measurement equal to the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at approximately sixty degrees Fahrenheit.
"CNG" See "Compressed natural gas" in this section.
"CNG GGE" means 5.660 pounds of CNG.
"CNG cylinder" means a cylinder or other container designed for use or used as part of a CNG system.
"CNG system" means a system of safety devices, cylinders, piping, fittings, valves, compressors, regulators, gauges, relief devices, vents, installation fixtures, and other CNG equipment intended for use or used in any building or commercial installation, or used in conjunction with a motor vehicle or mobile fuel system fueled by CNG, or any system or facilities designed to be used or used in the compression, sale, storage, transportation for delivery, or distribution of CNG in portable CNG cylinders, not including natural gas facilities, equipment, or pipelines located upstream of the inlet of a compressor devoted entirely to CNG.
"Commercial installation" means any CNG and/or hydrogen installation located on premises other than a single family dwelling used as a residence, including but not limited to a retail business establishment, school, convalescent home, hospital, retail CNG and/or hydrogen cylinder filling/exchange operation, service station, forklift refueling facility, or private motor/mobile fuel cylinder filling operation.
"Compressed natural gas" means natural gas which is a mixture of hydrocarbon gases and vapors consisting principally of methane (CH4) in gaseous form that is compressed and used, stored, sold, transported, or distributed for use by or through a CNG system.
"Compressed natural gas vehicular fuel system" means an object or objects mounted, installed, attached or otherwise placed upon or within a vehicle or vehicle trailer to supply or assist in the supply of compressed natural gas as a fuel to an internal combustion engine or engines including compressed natural gas blended with other gases such as hydrogen.
"Container" means a pressure vessel, cylinder, or cylinders permanently manifolded together used to store CNG or LNG.
"Cylinder" means a container constructed, inspected, and maintained in accordance with DOT and Transport Canada regulations or ANSI/IAS NGV2, Basic Requirements for Compressed Natural Gas Vehicle (NGV) Fuel Containers.
"DOT" means the United States Department of Transportation.
"Fuel supply cylinder" means a cylinder mounted upon a vehicle for storage of CNG and/or hydrogen as fuel supply to an internal combustion engine.
"Gallon Diesel Equivalent" or "Diesel Gallon Equivalent (DGE)" means an amount of a motor fuel that contains an average lower heating value of one hundred twenty-eight thousand (128,000) BTUs but in no case contains a lower heating value of less than one hundred twenty-four thousand (124,000) BTU's.
"Gallon Gasoline Equivalent" or "Gasoline Gallon Equivalent (GGE)" means an amount of a motor fuel that contains an average lower heating value of one hundred fourteen thousand (114,000) BTU's, but in no case contains a lower heating value of less than one hundred ten thousand (110,000) BTU's.
"Gallon Equivalent" means either a gallon diesel equivalent or a gallon gasoline equivalent.
"Hydrogen" means a hydrogen fuel composed of molecular hydrogen intended for consumption in a surface vehicle or mobile electricity production device with an internal combustion engine or fuel cell and includes liquid and gaseous hydrogen.
"Hydrogen system" means a system of safety devices, cylinders, piping, fittings, valves, compressors, regulators, gauges, relief devices, vents, installation fixtures, and other hydrogen equipment intended for use or used in any building or commercial installation, or used in conjunction with a motor vehicle or mobile fuel system fueled by hydrogen, or any system or facilities designed to be used or used in the sale, storage, transportation for delivery, or distribution of hydrogen in portable hydrogen cylinders, not including hydrogen facilities, equipment, or pipelines located upstream of the inlet of a hydrogen fill station.
"Liquefied Natural Gas (LNG)" means natural gas that has been liquefied at -259°F (-126.1°C) and stored in insulated cryogenic tanks for use as an engine fuel.
"LNG DGE" means 6.06 pounds of LNG.
"Location" means a site operated by a CNG and/or hydrogen licensee at which the licensee carries on an essential element of its CNG and/or hydrogen activities, but where the activities of the site alone do not qualify the site as an outlet.
"Manifold" means the assembly of piping and fittings used to connect cylinders.
"Mobile fuel container" means a CNG container mounted on a vehicle to store CNG as the fuel supply for uses other than motor fuel.
"Mobile fuel system" means a CNG system which supplies natural gas fuel to an auxiliary engine other than the engine used to propel the vehicle or for other uses on the vehicle.
"Motor vehicle" means every vehicle which is self-propelled and every vehicle which is propelled by electric power obtained from overhead trolley wires, but not operated upon rails; provided, however, the definition of "motor vehicle" herein shall not include implements of husbandry.
"Natural Gas" means compressed natural gas (CNG) or liquefied Natural Gas (LNG) as defined by this regulation.
"NFPA" means The National Fire Protection Association.
"NIST" means The National Institute of Standards and Technology.
"Outlet" means a site operated by a CNG and/or hydrogen licensee at which the business conducted materially duplicates the operations for which the licensee is initially granted a license.
"Person" means an individual, sole proprietor, partnership, firm, joint venture, association, corporation, or any other business entity, a state agency or institution, county, municipality, school district, or other governmental subdivision, public trust, or licensee.
"Proved" means the act of having verified the accuracy of dispensing equipment used to measure fuel and petroleum products using a "prover".
"Prover" means a calibrated volumetric receiver or mechanical device traceable to NIST standards.
"Representative" means the individual designated by an applicant or licensee as the principal individual in authority who is responsible for actively supervising the licensee's CNG and/or hydrogen activities.
Okla. Admin. Code § 380:80-1-3