Tenn. Comp. R. & Regs. 0400-54-02-.13
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%.
Tenn. Comp. R. & Regs. 0400-54-02-.13
Authority: T.C.A §§ 60-1-201 et seq., and 4-5-201 et seq.