Thinking and discussion on safe production
At 12:20 PM on November 30, 2017, a petrochemical company refinery workshop ii of 1.5 million tons/year heavy oil catalytic cracking unit slurry steam generator E2208-2 during maintenance, in the process of dismantling the equipment head bundle jumped out, resulting in 5 deaths, 3 people seriously injured.

 to sources, the petrochemical company was carrying out heat exchanger maintenance on 29, may not have installed blind plate, and the steam valve leakage, the cause of the accident is under investigation.
At that time, this accident triggered people's thinking and discussion about energy isolation and safety production. It is also a few cases of accidents caused by inadequate energy isolation that I want to share with you today.

Case 1: At 9:00 a.m. on May 20, 1999, raw coal system equipment maintenance, the material in the crusher must be cleaned thoroughly before maintenance. After strictly implementing lockout tagouton the crusher, li, the driver of the crusher post, directly extends his upper body into the crusher without wearing a safety helmet and cleans up the accumulated coal with a shovel. At this time, Zhao opened the hand selecting belt of the previous process, and the large lump of coal on the belt fell directly into the crusher, which hit Li's head in a big mouth, causing 8 stitches and mild concussion.

Case 2: On November 22, 2014, a worker needed to isolate the energy of a valve near a flammable liquid pipeline in a chemical plant. He disconnected the power and closed the valve, but did not lock it because he could not find the right size lock. Seeing no one around the pipeline, he left temporarily. The meter reader saw that the pressure on the meter was 0 when he read the meter. He did not know that there were maintenance personnel repairing the pipe at this time, so he restarted the pipe. Next to the steam pipe, maintenance workers are making repairs. He covered a small section of steam pipe with insulation and opened the flammable liquid line. When the meter reader turned on the valve, flammable liquid spilled out of the pipe, fell onto the steam pipe, caught fire, and the repairman died.