What is the basis for using a method of laying the communication cables of the control system one day per layer?
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What is the basis for using a method of laying the control system communication cables one day per layer? Are there corresponding regulatory requirements?
Doing it day by day, step by step, is to increase reliability and stability; it can also be considered a form of redundancy
I know that, but is there any evidence for it? Is it just *habit?
General provisions for instrument and control engineering design
Isn’t that the enterprise standard of Sinopec? Are there any generic standard-type ones?
There is no mandatory requirement, but this approach does have its advantages, as it reduces the likelihood of network fibers being damaged simultaneously. It is mainly the fibers for CCR and FAR that require such path redundancy, and the investment remains acceptable