Requirements for valve installation on field pipelines in DCS and SIS systems
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Dear friends from Sichuan, when installing pipelines on-site for DCS and SIS, are they connected in parallel or in series? How can we tell the difference? Or are there any requirements?
Could you please explain the problem in more detail? What kind of pipes are installed on-site? Is it a process pipeline or an instrument pressure tapping pipeline?
DCS and SIS have different safety levels, with SIS having a higher level than DCS. If the SIS activates, the DCS system will enter modes such as cooling down, stopping material input, or pressure relief, and it will be unable to function in such conditions. Strictly speaking, SIS and DCS systems are two unrelated systems, but SIS is superior to DCS systems.