Regarding the level of the terminal safety instrumented system
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Have you ever worked on the design of control systems for oil loading and unloading terminals? Is it necessary to have a separate SIS system, and what level should that SIS be? I need a solution.
SIL3. The general principles of SIS require independent setup! As for whether a SIS requires a safety assessment. Under normal circumstances, if the SIL level is not high, a DCS can be used directly. Generally, the imported manufacturer SIS referred to is Foxboro; Black Horse is another option