SIL (Safety Integrity Level)

Safety Integrity Level (SIL) is a measurement used to define the reliability of safety systems in industrial settings. It indicates how likely a safety system is to perform correctly when needed to prevent accidents or hazards. SIL levels range from 1 (least reliable) to 4 (most reliable), with higher levels representing systems that are more dependable in avoiding dangerous failures. This helps engineers design and verify safety systems, ensuring they meet appropriate standards to protect people, equipment, and the environment from risks.