Safety Instrumented Systems

HSE Q&A (Issue 40: Instrument Safety)

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【Question 1】Do SIS and DCS valves need to be set up separately? Can SIL1 and below be shared? 【Answer】1）Refer to “Design Specifications for Safety Instrumented Systems in the Petrochemical Industry” (GB/T 50770-2013): Measurement and actuators are best set up independently. When control valves are shared, it should ensure thatSIS takes priority. 2）Refer to “Acceptance Specifications … Read more

Cybersecurity Issues of Sensors in Industrial Systems

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Cybersecurity Issues of Sensors in Industrial Systems

Author | Antai Technology 【Abstract】Methods used in industry to protect instruments from unauthorized modifications include hardware write protection switches on instruments, software write protection passwords on instruments, passwords for remotely managing instruments’ IMS/AMS, and various unique protections provided by SIS solutions. Utilizing these protective measures, Project 12, aided by the U.S. Department of Homeland Security, … Read more