Safety Instrumented System (SIS)

A Safety Instrumented System (SIS) is a specialized safety system designed to prevent hazardous events in industrial processes, such as chemical or manufacturing plants. It monitors critical conditions and automatically takes actions—like shutting down equipment or activating alarms—if dangerous situations are detected. The SIS acts as a safeguard to protect people, the environment, and equipment by ensuring that potentially risky processes are controlled and halted before causing harm. It operates independently of regular control systems and is engineered to perform reliably under critical conditions, helping to maintain safe operations.