Production Technology [Weekly Topic]: Analysis of Personal Injury and Death Accidents (10-12-27~11-1-2)
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This post was last edited by shmily327 on 2010-12-27 11:09. Accident analysis: In June 2006, in the olefin workshop of a chemical plant, steam was being supplied; the main steam valve connected to the fuel boiler in that section needed to be thermally tightened due to equipment replacement. The construction unit carries out the work, with Hu responsible for coordination. During the construction process, a worker knocked the wrench away while using it; the flying wrench injured Hu’s left hand as he was climbing a ladder about 4 meters away at that time. Diagnosed with a fracture of the proximal phalanx of the left ring finger and skin lacerations. Please analyze the direct and indirect causes of the accident. What are the violations committed by the workers? How can we prevent similar accidents from happening again? Notes: 1. Participation is rewarded ； 2. Please hide your replies; for instructions, see: http://bbs.hcbbs.com/thread-492556-1-1.html. 3. Do not edit your replies after posting them. 4. The moderator will announce the answers in a timely manner. 5. Correct answers with thorough and reasonable analysis earn +1 charm.
1. Immediate cause: The hammer used to strike hit Hu’s left hand； Indirect cause: The wrench fell off due to being struck. 2.a It requires heat to be tightened, but mechanical force (hammering the wrench) is used instead ； b When using a striking wrench, no one should be in the forward direction ； c No safety protection measures during construction d No supervision present 3. a Construct in strict accordance with requirements b Implement safety protection measures c There is supervision during construction d Strengthen safety education
This post was last edited by shmily327 on 2010-12-28 08:34. Direct cause: improper operation; there is no need to strike when tightening the valve, an F wrench is sufficient； Workers violating operating procedures are the main cause of accidents.
Immediate cause: The construction workers used the tools improperly; indirect cause: insufficient cooperation between the construction workers and the on-site operators. Violation: The construction workers used wrenches in a manner that violated the regulations. Hu failed to use personal protective equipment such as gloves and safety ropes properly. It is necessary to strengthen supervision of the on-site workers and ensure that they use personal protective equipment correctly.
The main responsibility lies with the construction workers; they failed to implement safety precautions, did not take measures to prevent tools from falling or flying away, and there were no dedicated safety personnel. Those climbing ladders should check whether they are wearing protective clothing and gloves
Reply to 5# de*n5201314: Please give me some advice!
Learn*:victory:
This post was last edited by shmily327 on 2011-1-2 at 11:36. The direct cause was that the workers did not use any protective measures during their work, which led to a wrench being thrown and injuring someone; the indirect cause was that Hu and the other workers failed to adhere to the principle of avoiding harm to oneself, others, and the environment. It is necessary to strengthen safety education and awareness among employees, and at the same time, better protective measures as well as enhanced supervision should be implemented during construction activities.
A supervisor should be assigned for work at heights; no one should be below the working area. Tools should be kept in tool bags, and wrenches used for striking should be tied with a rope to prevent them from falling and causing injury. The implementation of safety measures in these stages should be supervised and checked by the team leader, supervisor, and safety officer.