Companies that operate large and complex gas pipeline systems face the difficult task of maintaining those assets while complying with code and continuing to operate. Continuous system additions and changes, implemented by diverse groups across the company, result in tedious data driven studies to ensure that operating pressure strictly complies with code. This document presents a model and an approach that utilizes Geographic Information Systems (GIS) data to accurately and efficiently calculate a code-compliant Maximum Allowable Operating Pressure (MAOP), for systems that have thousands of miles of wide-ranging pipe segments and components.