Is it required to use DCS?
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Can a workshop without two key points and one major point be controlled manually only? In workshops that utilize hazardous chemical processes, can only the SIS be used to control those processes, while all other operations can be handled manually?
Whether to use the system or not, you need to respect the requirements of the design institute
It’s possible to do it; the cost of DCS is relatively high, but the costs associated with labor are also not low. You need to consider all factors together.
DCS systems are more reliable than humans in terms of design, but all-digital displays are still not very convenient to use
Manual must be quite troublesome; automatic is better
The SIS system is not operated during normal operation, while the DCS system can be operated； The SIS system comes into play only when the DCS system fails ；
It is not necessary to use a DCS; as long as the SIS meets the requirements, there are no strict demands regarding a DCS.
**It seems that requirements apply only to those two key areas and one major aspect.
It’s possible, but automatic control needs to be much more stable and effective; manual control is labor-intensive, and its efficiency is far inferior to that of automatic control.
It must be done now, as remote control is necessary; even manually, it’s not possible to be on site – remote operation is required. Since remote control is required, a DCS is necessary.
Is there any document that explicitly requires this? Let me check