What is the difference between starting up a DCS and its normal operational mode?
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This post was last edited by sunjl1981 on 2013-1-6 at 23:56 :handshake What is the difference between starting up a DCS and its normal operational mode? Which master can tell me? Thank you so much! # ， ， &
This question is strange; please explain, OP.
Starting up the DCS does not mean that the system is in operation; it merely indicates that the conditions for debugging the system are now met. Only after the production system has undergone extensive debugging can it start operating properly. I think the question asked by the original poster is a bit silly, haha! This post was last edited by limingshuguang on 2007-12-12 at 12:43.]
I find it strange too; it’s our exam questions……
Who came up with the question? Enough for BC? No prerequisites at all? Do you want to ask what the differences are between the state during DCS debugging and the state during normal production? Generally, before a DCS is put into official operation, a SAT, that is, on-site acceptance, is carried out. At this point, all of the DCS configurations, internal programs, interlocks, etc., should have already undergone Factory Acceptance Testing (FAT), so there are basically no major issues left. In addition to further verifying the stability of the system and potential issues that may arise during operation, if possible, all measuring instruments, control valves, etc. should also be connected to the DCS system for joint testing. Check whether DCS can monitor and control the process properly. Note that at this point, for the field signals returned that cannot be satisfied by certain field conditions, it should be the instrument engineer who provides virtual signals, as some test conditions such as interlocks cannot be met at this time. However, the signals provided by the DCS, such as the opening and closing of control valves, must be able to be implemented on-site. The conditions of the on-site process should be in a preparatory state prior to startup; it is absolutely not allowed to perform debugging of the entire DCS system during normal production. As for the operating status of the DCS during normal production, there’s no need to elaborate; everyone is aware of it. It should be noted that operations can only commence once the DCS has been successfully commissioned and all instruments, electrical systems, control valves, etc. are operating properly. This post was last edited by Guan Yue Cang Shu Lou on 2007-12-12 at 12:04.]
Driving is very busy there – there are many parameters that need to be adjusted or supervised. After driving, you bear the greatest responsibility; today’s DCS systems can detect issues in system operation first