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Thinking behind an accident


Ying Tianhui Office

This year, there was an interlocking parking accident in our class. Two colleagues accidentally knocked off a level gauge line terminal with interlocking when adding a safety barrier to DCS cabinet, causing an interlocking parking accident with low liquid level. Through the investigation of this matter, it is found that everyone is not careful in the process of doing things, the sense of responsibility is not strong, and the monitoring personnel are not in place. Originally, two people were arranged to work together for the maintenance of important instruments, one working and the other monitoring. As a result, both of them were working at the same time, each working separately, which did not play a role in monitoring. In addition, everyone was not familiar with the interlocking instruments, and the signs were not eye-catching the signs. Taking this accident as a machine, each member of our class has made a profound self-analysis to find out the shortcomings in normal maintenance. In the future, we should strictly follow the maintenance procedures, make various risk analysis before operation, take protective measures against risks, make maintenance plans, keep close contact with process personnel, and wait until the process is qualified and the maintenance conditions are met before operation. Especially for the instruments involved in SIS system, from the field detection instrument to the terminal of the cabinet room, from the cabinet room to the solenoid valve, valve and other instruments controlled on site, SIS interlocking instrument identification shall be hung and the identification shall be eye-catching, so that everyone can know that the instrument belongs to interlocking instrument at first sight. During maintenance, the instrument interlock shall be properly released and the error cannot be understood repeatedly. At ordinary times, we should pay more attention to remember all kinds of important instruments, interlocking instruments and the instruments associated with them. Only after we are familiar with them can we know fairly well and be accurate.

After this accident, all kinds of interlocking instrument signs have been hung up. In the usual patrol inspection, careful inspection should be carried out. If the signs are found to be unclear or lost, they should be repaired in time. Focus on the operation of these instruments. If problems are found, they must be reported and dealt with immediately. We should learn from the experience and lessons from this accident. While maintaining the instrument, we should spend time and strive to improve our business level. We should not only learn the knowledge of instrument, but also be familiar with the knowledge of production process, management and other aspects, so as to improve ourselves in an all-round way. When we encounter problems, we can deal with them accurately and quickly, only in this way can we escort the production of "stable and full of excellence.

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