The NFPA 12-2022 Standard on Carbon Dioxide Extinguishing Systems stands as a comprehensive directive, delineating the essential requisites for carbon dioxide fire-extinguishing systems. Tailored to guarantee the operational integrity of such equipment over its lifecycle, this standard is indispensable for those involved in purchasing, designing, installing, testing, inspecting, approving, listing, operating, or maintaining these systems. Crafted to be pragmatic and user-friendly, NFPA 12-2022 focuses solely on the indispensable essentials necessary for proficient execution by skilled practitioners in the field. It encompasses various types of CO2 extinguishing systems, including total flooding, local application, hand hose line, standpipe, and mobile supplies for industrial and marine fire protection. The standard furnishes comprehensive guidelines and regulations governing the installation and maintenance of these systems, ensuring adherence to industry best practices. Furthermore, NFPA 12-2022 permits the utilization of systems, methods, or devices that demonstrate equivalent or superior quality, strength, fire resistance, effectiveness, durability, and safety compared to those prescribed within the standard. However, technical documentation substantiating equivalency must be submitted to the authority having jurisdiction. In essence, NFPA 12-2022 provides a robust framework for the effective utilization and upkeep of carbon dioxide fire-extinguishing systems, affirming their reliable functionality throughout their operational lifespan.