Logical testing of DCS logic and SIS logic
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Friends, how often are the DCS logic and SIS SIF circuits tested? Are there any relevant regulatory documents on this matter? Thank you!
There are relevant standards stipulating this; I can’t remember the details exactly. We have established our own rules, which require testing after 7 days of parking.
This post was last edited by jlshnlhj on 2022-3-17 at 19:38. In fact, even if there were a rule regarding “how often tests should be conducted,” it would be meaningless. Time has come, but the system is still running; can a stop test be performed? It is important that before each drive, representatives from the mechanical, process, electrical, and instrumentation departments gather together to conduct a thorough test of everything, from the primary components to the actuators. Records are kept for archiving, and all participants sign off on them. Ensure it is in good condition before driving. Do one's best.
Well, it can be considered that way, but safety inspections are mandatory, and the time taken for testing must not exceed 7 days from the start of work
This post was last edited by jlshnlhj on 2022-3-17 at 23:23. Please explain: “The detection time and the start time cannot exceed 7 days” – I don’t understand what this means. Our company has a rule that before each drive, representatives from the mechanical department, the process department, the electrical department, and the instrumentation department must all be present to conduct a comprehensive test of everything, from the primary sensors to the actuators. Make a record for archiving, with signatures from all four participants. Ensure that everything is in order before driving. After the shutdown, the instruments are checked and tested separately first to ensure successful passage in the four-party test. According to these regulations, if you park the vehicle today, you can drive it tomorrow; before driving, it is also necessary to conduct a thorough test of everything from the control unit to the actuator, in collaboration with all relevant parties. Make a record for archiving, with signatures from all four participants.
The time required for joint debugging must be within 7 days of the start date; if it exceeds 7 days, re-debugging is necessary
How long does it take for you to conduct such tests? Are there many interlocks?
This post was last edited by jlshnlhj on 2022-3-18 at 17:41. The joint testing of all four components takes time; the focus is on the instruments, while the electrical systems are checked separately in advance. As long as the preparations for the testing are done well, one day is sufficient. It’s not going well... but the points deducted for performance evaluation aren’t trivial.