Safety Integrity Level (SIL)

Safety Integrity Level (SIL) is a measurement used to indicate the reliability of safety systems in preventing dangerous failures in industrial settings. It ranges from SIL 1 to SIL 4, with SIL 4 being the highest level of safety assurance. Each level corresponds to specific performance requirements and the probability of failure: the higher the SIL, the lower the acceptable risk. SIL is crucial in ensuring that systems, like those in chemical plants or transportation, operate safely to protect both people and the environment by minimizing the chances of accidents.