Rules & Regulations of the State of Tennessee
Title 0400 - Environment and Conservation
Subtitle 0400-54 - Production (Transferred from 1040-04)
Chapter 0400-54-02 - Procedures and Equipment for Metering, Measuring and Producing Oil Condensate and Gas (Transferred from 1040-04)
Section 0400-54-02-.13 - BASIC ORIFICE COEFFICIENTS

Basic orifice coefficients used in the calculation of gas flow shall be those contained in the American Gas Association's Gas Measurement Committee Report No. 3 or some other basic orifice coefficients generally accepted in the industry and approved by the Supervisor, such as those published by the Foxboro Company, American Meter Company, and Pittsburg Equitable Meter Company. Corrections for base pressure and base temperature shall be made. Corrections for supercompressibility are recommended when available. Corrections for Reynolds number and expansion factor are recommended only in cases where their combined correction is equal to or exceeds 1%.

Authority: T.C.A §§ 60-1-201 et seq., and 4-5-201 et seq.