|(a) The operator of each refinery in the state shall use tanks for measuring the crude oil and products taken into the refinery and the finished products of the refinery. (b) No refinery or gasoline plant shall be operated without a certificate of compliance on a form supplied by the commission and approved by it, which shall be in effect for a period of 12 months, but may be renewed for one or more additional 12-month period. The operator must equip the plant with tanks and proper metering facilities. (c) Measuring facilities for the accurate measurement of the volume of each type of gas taken into a natural gasoline plant shall be installed and used by the operator of the gasoline plant. Meters must be provided and used for measuring separately the dry sweet natural gas, the dry sour natural gas, casinghead gas, and refinery vapors taken into each plant. Accurate meters must be installed and used in each gasoline plant in which is
processed dry gas (as distinguished from casinghead gas) so that all disposals of residue gas from such natural gasoline plant are accurately accounted for. Adequate devices should likewise be installed and used in each gasoline plant at which casinghead gas exclusively, or casinghead gas and refinery vapors only are processed, for the purpose of making approximate estimates of the volume of residue gas produced from such plant; such devices may consist either of meters, pilot tubes, pressure recording gauges, or manometers, through which measurements may be made from which reasonably accurate estimates of volume can be made. (d) Measuring natural gasoline. (1) Adequate tanks or meters of standard or approved types must be provided for measuring accurately all finished products of natural gasoline plants. (2) The operator of each natural gasoline plant shall meter separately the volume of dry sweet natural gas, dry sour natural
gas, casinghead gas, and refinery vapors that are taken into each natural gasoline plant. (3) The operator of each natural gasoline plant in which dry natural gas (as distinguished from casinghead gas) is processed shall use metering facilities so that all disposition of residue gas from such natural gasoline plants are accurately accounted for. The operator of each natural gasoline plant in which casinghead gas exclusively, or casinghead gas and refinery vapors only, are processed shall install and use measuring devices, consisting either of meters, pitot tubes, pressure recording gauges, or manometers, with which measurements may be made of the residue gas disposition from the plant. (4) The operator of each natural gasoline plant shall provide and use tanks or meters of standard or approved type for measuring each finished product of the plant.