Table 8 Cluster analysis of group-level accidents
From: A chemical accident cause text mining method based on improved accident triangle
Cluster No | The accident types | High-frequency keyword | Main causes of accidents |
|---|---|---|---|
0 | Poisoning accident, explosion accident, mechanical injury accident, scald accident, environmental pollution accident, product quality accident | Coking plant, coal gas, ammonia, temperature, respirator, fainting, ammonium sulfate, coke quenching vehicle, scald, pungent, coke, screw conveyor, gas pipeline, blind plate, polypropylene, death | Weak safety awareness, failure to take protective measures, illegal operation, imperfect product quality management system |
1 | Production accident | Power supply system, voltage, steam, pressure, temperature, overtop, vibration, current, fluctuation, compressor, blockage | Excessive temperature/ pressure/current/vibration fluctuation and pipe network blockage |
2 | Production accident | Induced draft fan, motor, cable, bearing, temperature, trip, interlock, transformer | Equipment components damaged, short circuit, switch trip |
3 | Production accident | Polymerization reactor, static electricity, process parameters, MTO reactor, pressure, temperature, vibration, nitrogen pump, shutdown | Equipment components damaged, static electricity, excessive pressure/ temperature/vibration fluctuation, and accumulated materials are not cleaned timeously |