September 2020, Vol. 247, No. 9
Features
Adjusting Costs with Large-Diameter Tapping Tees
By Julie Maupin, Peoples Gas, and Steve Gauthier, Energy Experts International Peoples Gas is the oldest utility in the city of Chicago and delivers natural gas to about 870,000 customers within the city limits through 4,500 miles (724 km) of gas mains and 500,000 services. Since 2011, Peoples Gas has been pursuing an aggressive system modernization program. Supraflow tapping tee This includes the replacement of 2,000 miles (3,200 km) of cast iron and ductile iron mains operating at 7 inches (178 mm) water column with modern polyethylene operating at 22 psi (1.5 bar). This program also includes relocating regulators and meters out

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