Ill. Admin. Code tit. 83, § 501.140 – Compressibility and Supercompressibility | Midpage
§ 501.140
Ill. Admin. Code tit. 83, § 501.140
Compressibility and Supercompressibility
AUTHORITY: Implementing and authorized by Sections 8-301, 8-302, 8-501, 9-201, 10-101, 10-107, 19-110(e)(3) and 19-115(b)(1), (b)(4) and (b)(5) of the Public Utilities Act [220 ILCS 5/8-301, 8-302, 8-501, 9-201, 10-101, 10-107, 19-110(e)(3) and 19-115(b)(1), (b)(4) and (b)(5)].ILLINOIS COMMERCE COMMISSION
a) 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.