Can you go straight to SIS without DCS?
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This post was last edited by Tunaishouyi on 2017-10-31 at 14:26. Regarding the requirements for safety instrument systems, in the case of interlocked emergency shut-off valves, these should remain in an open state during normal operation, and be operated via manual valves. Is this approach in compliance with the regulations?
Yes, there are not many points for integrating SIS into the tank farm area. The cost of the previous set of domestic systems from Lihai is around 200,000 yuan.
Yes, but it is necessary to modify and replace some equipment.
GB/T 50770-2013: The SIL1 level is suitable for use in conjunction with DCS. In theory, a safety instrumented system should be an independent system. However, given the national conditions, the tank farm control system is not the main issue at present; manual valves are still widely used in tank farms, so those need to be changed first.
SIS is a safety instrument system that is not used for production operations
Of course, SIS and DCS are two separate systems