This presentation discusses applying lean principles to the management of change (MOC) process required by PHMSA API RP 1173. It provides an overview of RP 1173 requirements for MOC, including identifying the types of changes, elements of the MOC process, and describing how a structured MOC process aligned with other RP 1173 elements can address the requirements. Lean concepts are discussed, such as value stream mapping, waste elimination, and continuous improvement to help ensure a sustainable and efficient MOC process.