Current through Register Vol. 49, No. 2, January 10, 2025
Section 501.140 - Compressibility and Supercompressibilitya) A utility shall account for compressibility when metering gas at pressures greater than 15 pounds per square inch gauge (psig).b) A utility shall account for supercompressibility in the flow equation used in orifice metering.Ill. Admin. Code tit. 83, § 501.140
Adopted at 39 Ill. Reg. 12494, effective 8/25/2015.