In industrial environments where machinery, pipelines, and pressurized systems are frequently operated, ensuring worker safety is a fundamental priority. Among the most effective safety practices is the valve lockout tagout (LOTO) procedure. This process is designed to protect employees from unexpected releases of hazardous energy, prevent accidental equipment startups, and ensure that valves controlling liquids, gases, or steam remain in a safe position during maintenance or servicing.

Understanding Valve Lockout Tagout Valve lockout tagout is a specialized application of the broader LOTO program. While traditional LOTO may involve isolating electrical systems, valve LOTO focuses specifically on mechanical energy in the form of fluids or gases. Valves are critical control points in pipelines and process equipment. If they are inadvertently opened during maintenance, harmful substances such as steam, chemicals, or high-pressure water could be released, leading to severe injuries or even fatalities. Valve LOTO prevents such accidents by physically securing the valve in its safe state and tagging it with clear identification.