Pay close attention to the issue of power load in key processes
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Among the 18 key processes under strict supervision, only the phosgenation and gasification processes have explicit requirements for a \"dual power supply\" in their basic control requirements; so how should the power supply requirements for the other processes be determined? Is a secondary load required for all of them? Additionally, what is the difference between dual-power supply and dual-circuit supply? Can the power supply from the municipal grid combined with a backup generator meet the requirement for two circuits?
Could you explain dual circuits and dual power supplies? A dual circuit means that the process is supplied with power from two sources, both of which come from the same distribution room or transformer. As for a dual power supply, it’s what you mentioned: one source of power from the municipal grid plus a backup generator; in this case, the two power sources represent two separate power systems.
Now, many chemical companies, out of their own considerations, implement dual circuits or dual power supplies, or even have their own backup power generation systems； Most companies decide whether to take such measures based on their own security concerns or on the extent of damage that a power outage could cause to them
You mean voluntary actions, rather than something that must be followed, right?