Share this article Share this article CHICAGO, March 17, 2021 /PRNewswire/ -- With the arrival of spring construction, Peoples Gas continues to make large-scale improvements to the safety and reliability of Chicago's natural gas delivery system. The upgrades are the focus of the company's System Modernization Program (SMP), which is bringing safety improvements to thousands of miles of natural gas pipes in every Chicago neighborhood. Many of the iron pipes being replaced were installed in the 1800s. "SMP is a comprehensive effort to safeguard an aging natural gas delivery system," said Andy Hesselbach, senior vice president — gas operations for Peoples Gas. "Each construction season brings us closer to our goal of having a safer, more resilient system."