CyberCertPrepOT Security FundamentalsOT Fundamentals: Safety Systems & Physical SecurityEASYFree question
A plant engineer sketches one safety instrumented function that closes a feed valve on high pressure. Which sequence correctly names the three subsystems of an SIF?
- A.Initiator then operator display then historian archive
- B.Detector then safety network switch then data gateway
- C.Sensor then logic solver then final element
- D.Transmitter then BPCS controller then alarm annunciator
Why C is correct
An SIF is made of a sensing subsystem, a logic solver and a final element such as a valve. Displays, historians, annunciators and network gear support operations but are not part of the safety function chain.
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