What is the Probability of Failure on Demand or PFD? Check out the full blog post over at https://realpars.com/safety-instrumented-system/ The probability that a device, whether input, output, or logic solver, will fail to cause the Safety Instrumented Functions to not respond when called upon, is called the Probability of Failure on Demand, or PFD. #RealPars #SafetyInstrumentedsystem #SIS #Automation #PLC #Electricalengineering #Engineering #Industrialautomation #Industry | RealPars