Does the DCS modification program require two people?
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What are the regulations in chemical companies? Is it required that two people be present when modifying DCS programs?
It’s a requirement imposed by the companies; CNPC and Sinopec don’t have such a requirement
After all, DCS is the brain that controls the equipment; assigning two people, in my opinion, is mainly to prevent errors and mistakes and avoid safety incidents
For safety reasons, it needs two people; it doesn’t matter if it’s just one person. There are many cases where changes are even needed but not made. It depends!
One to modify the program, and one to keep watch? Do we even have to sneak around just to change a program?
This is not a mandatory requirement, but one can consider the company’s regulations; if work orders are required in this case as well, just like in electrical work, then it might be necessary. It doesn’t matter if it’s in a shutdown state. If you have offline simulation for this, then there will be no problem at all.
No, the company doesn’t have that many people.
There’s no strict requirement for modifying the program, right? Just save the original program to disk
Generally, a backup is needed first; one person is sufficient
It will be better with two people: one to make modifications and the other to check, as well as to provide supervision to prevent any movement during lowering. Most importantly, if someone jumps out of the car and there’s a witness, it will show whether it was you who did it, haha
Actually, when I work on programs, I’ve always hoped that someone could review them for me, but in reality there’s no such person: L