At 0:50 on April 3, Wang Yifan, an outside operator on the night shift, hurried into the operation room: "The temperature of the raw material pump motor is too high. I just measured 78 ℃, please confirm it again." After hearing this, monitor Chen Xiuwen hurriedly went to the pump room to check.

The raw material pump is the lifeblood of the lubricating oil device of Lanzhou Petrochemical Refinery, and the whole device is the hub equipment for conveying "blood"; once interrupted, production will not be able to continue. After a careful "consultation", Chen Xiuwen picked up the intercom: "In the central control room, the impeller of the raw material pump is damaged and cannot continue to run. Now we need to switch the standby pump urgently. Please pay attention to the change of the raw material flow."

1, central control room. Sitting in front of the operating table, Wang Minwen, an internal operator who carefully looked through the DCS screen, quickly switched the screen to the extraction system. While controlling the liquid level and temperature of the tower, it is necessary to contact the external operation in time, adjust the amount of raw materials in time, and do a good job in material balance. Wang Minwen stared at the screen and did not dare to slack off.

1:20, raw material pump room. Chen Xiuwen and Niu Aimin, an external operator, switched the raw material pump, and Wang Yifan and an electrician carried out maintenance. Everything was under way. Wang Yifan said: "monitor, tomorrow morning to repair the pump can not?" Chen Xiuwen said: "who knows cold, but the product quality is not qualified, who is responsible for it?"

At 1: 40, the raw material pump room. The electrician does not have a matching spare impeller and cannot replace it. Chen Xiuwen thought a little and said: "There is no spare impeller, we will look for it from other spare pumps, and we can always find the right impeller."

2: 10, cold oil pump room. Sun Jianhua was making an inspection and saw that everyone was still looking carefully one by one. There was no slack in work because of the cold.

2: 45, cold oil pump room. Found the right impeller. Although everyone is hard, they are tired and happy.

3: 20, raw material pump room. Purge, stop the pump, open the pump, repeated many times, everything finally returned to the normal state of succession.

4: 10, outside the exercise room. After a busy midnight, Chen Xiuwen breathed a sigh of relief and said, "With everyone's concerted efforts, we have avoided an equipment accident. It is our duty to stick to our posts and do our job well."