DCS is the plane embodiment of on-site construction. It should be learned from the site, and then corresponding to the DCS operation interface. Today, I will simply talk about the operation of DCS system. Experienced people say that it is a step to read the DCS operation manual carefully, because these are experience summaries. Now, the DCS card manufacturer of Zhejiang University will explain relevant matters to you.
Meaning of terms in DCS operating procedures
Note: It indicates that the involved things or operations may cause unpredictable dangerous consequences.
Warning: it indicates that the involved things or operations can cause predictable system operation failures.
Danger: It means that the involved things or operations will cause system shutdown, even equipment damage and personal injury.
DCS operator's operation responsibilities
1. Monitor the operation of DCS system to prevent possible hazards.
2. Intervene the system operation at any time to ensure safe and normal production.
3. Change of system authorization operation parameters.
DCS system exception handling
1. If the DCS operation interface data is not refreshed (the data is refreshed once a second under normal conditions), and the manual and automatic switching cannot be operated, the DCS maintenance personnel shall be contacted for maintenance, and the on-site operation shall be conducted immediately.
2. In case of transmitter failure, the automatic control process shall be switched back to manual immediately.
3. In case of valve actuator, circuit output card and other failures, on-site operation shall be changed.
4. In case of DCS system circuit input card fault, the corresponding control circuit shall be switched back to manual mode, and the fault card shall be replaced. After checking and confirming that the fault is eliminated, the automatic mode can be put into operation again.
In addition, in case of abnormal power failure of DCS system, on-site operation shall be changed. After re energizing, ask the engineer to check the system condition, check whether the system data such as circuit parameters are normal, and confirm the opening of each regulating valve. If there is any abnormality, download the configuration again, and then switch to automatic mode again after everything is normal. For other exceptions, please refer to the post operation rules. Follow us http://www.hotelfidalgo-goa.com , learn more!