Regarding whether safety interlock activation conditions for chemical production plants need to take into account low-probability events such as misoperations
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As the title says! Please feel free to share your views, and it would be best to include the standard guidelines for guidance.
In the case of interlocked shutdown, misoperation must be taken into consideration. When interlock startup is involved, it is usually arranged according to process requirements by the instrumentation engineers; your instrumentation technicians should assist in resolving these issues within the context of the process
To avoid misoperations, a majority vote of three out of two is usually implemented
Misoperation is something that needs to be taken into account; preventive measures include setting operation permissions, locking devices, covering the emergency stop buttons on the auxiliary control panel with protective covers, requiring two presses of the emergency stop button for it to function, and adding a delay mechanism to such buttons.