Safety Integrity Level 4 (SIL 4) SIL Level 4 represents the integrity level required to avoid disastrous accidents. The higher the potential consequence, the higher the integrity rating of the safety system is required to be. Watch the video and answer the question. What is covered under SIL Level 4? Tag someone who needs to see this. #ESD #Automation #RealPars #Industry #PLC #ElectricalEngineering | RealPars | Facebook