CODE3 is a material coding management system that can be used throughout the entire lifecycle of a plant, from design to decommissioning. It allows for maintenance and engineering tagging coding and itemized coding of equipment, instruments, piping, bulk materials, models, and spare parts. CODE3 is able to rationalize and optimize component and spare part management through constant updates from vendor data sheets, fostering integration between engineering, production, and maintenance departments. The software modules in CODE3 allow users to collect plant data, generate standardized codes, implement customized coding methodologies, collect model and spare part information, manage coding requests, and code documentation according to project needs.