Safety and automation system (SAS) — How the safety and the automation systems finally come together as an HMI

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Overview:
Today, we have clear guidelines on how the Safety Instrumented Systems (SIS) and basic Process Control Systems (BPCS) should be separated from a controls and network perspective. But what does this mean to the HMI and the control room design? Where do fire and gas systems fit into the big picture, and what about new security and environmental monitoring tasks? What does the instrument engineer needs to know about operators and how systems communicate with them.