This is a topic which comes up time and again, especially when reviewing legacy systems. Although IEC61511 doesn’t preclude the use of shared devices, it does however provide guidance under Clause 11 of what the constraints are. Even though the Safety Instrumented System (SIS) and Basic Process Control System (BPCS)…
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Entries tagged with: Steve Gandy
- by Steve Gandy, CFSP
- Tuesday, March 30, 2021
- Functional Safety
Why Sharing Components Between SIS & BPCS Is Not A Good Idea
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