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Analysis of an accident involving ammonia liquid burns to the eyes

2009-03-10View Original

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Analysis of an Accident Involving Ammonia Liquid Burns to the Eyes I. Course of the Accident Around ##:## on ## month, 200*, at ##:##, severe leakage occurred from the packing of Pump No. 2 in Workshop 1 of a chemical plant located in ## city, ## province. After shutting down Pump 1#, the on-duty operator, T, depressurized and replaced the contents of Pump 2#, then handed it over to the maintenance team for handling. The maintenance team leader immediately assigned tasks and, eager to act, led team members W and B to get straight into the maintenance work. When repair worker B was removing one of the gland sets in the pump and using a crowbar to pry open the pump plug, the condensate inside the pump (containing ammonia) suddenly sprayed out under pressure, hitting B’s face and body and getting into his left eye. Although B rinsed it with clean water, the left eye still hurt so much that it couldn’t be opened, and they were then taken to the hospital for emergency treatment. II. Analysis of the accident causes 1. The maintenance personnel carried out the maintenance work in a hurry, without obtaining a permit for safe equipment maintenance and without establishing any safety precautions. The main cause of this injury incident was that the operator failed to conduct a thorough inspection of the equipment before maintenance, nor did they carefully verify whether the pressure inside the pump had been completely released; instead, they carried out the maintenance using routine procedures based on habit. 2. Since no safety maintenance measures have been established, it is of course impossible to talk about the inspection and implementation of such safety measures. The lack of safety awareness among the maintenance workers, their carelessness, reckless behavior, and failure to wear protective equipment due to negligence were the direct causes of this injury accident. 3. The fact that maintenance workers carried out their tasks in violation of regulations indicates serious deficiencies in the safety management of that workshop. The safety management systems are essentially ineffective, and the safety procedures for maintenance work are not properly followed. Inadequate safety management has contributed to such violations by the maintenance workers, and this was an important cause of the accident that occurred. 4. Maintenance workers ignore safety procedures and lack awareness of self-protection; driven by blind enthusiasm for work, they overlook the importance of implementing safety measures, making accidents and injuries inevitable. III. Lessons Learned from the Accident and Preventive Measures 1. In accordance with the principle of \"not letting go until four aspects are addressed,\" the factory conducted a thorough analysis of the accident, identified the true causes behind it, and formulated measures to prevent such accidents from occurring. 2. Organize the maintenance workers from all workshops in the plant; led by the workshop supervisors, they go to the location where the accident occurred, where the people involved explain what happened, thereby providing on-site accident education. Each workshop is required to organize in-depth discussions to draw broader lessons from the incident, and to develop plans and measures for accident prevention within its own workshop. 3. Accident prevention must be addressed rigorously at the source; this involves examining leadership, mindset, management practices, systems, and safety education. In accordance with the principle of \"not letting anything go unchecked,\" those responsible and managers must be held strictly accountable, thereby ensuring that all employees attach great importance to safety. 4. To prevent the recurrence of similar accidents, it is necessary to strictly enforce safety management systems and adhere rigorously to safety operation procedures. Effectively step up safety management and assessment, strengthen safety supervision, enhance the learning of safety knowledge, raise employees’ safety awareness, improve the safety skills of all staff, and eliminate any violations of safety regulations. Collect Share Rate
Reply #22009-04-25
“Be cautious when using a lever to pry things open. In 2000, at Xihua Shi*, I heard from veteran workers that there was a batch of calcium carbide for which the discharge opening couldn’t be opened properly, so it was forced open; the liquid calcium carbide that sprayed out at that moment burned the operators to death. . . . . . . . Remember the lesson
Reply #32009-05-13
The lessons from accidents are the most convincing; the lessons learned through bloodshed are worth avoiding
Reply #42009-05-14
There was a leak in the mechanical seal of the decarbonization lean liquid pump; someone tried to handle the valve without wearing protective gear and ended up getting burned by the alkaline liquid that was sprayed out. The workshop organized a learning and exchange session as a result. I was reprimanded by my boss.
Reply #52009-05-16
Experienced repair workers have a strong sense of self-protection. When working on equipment that involves ammonia and requires drilling, those who have protective gear use it; those without such gear must turn their face away during the drilling process. The same applies when removing compressor valves, all to prevent accidents.
Reply #62009-05-18
Educating employees through real-life examples to improve their safety awareness skills is a great approach

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