Chain hoists with errors caused by an accident deaths

November 1, 1989, workers at a steel company ironworks repair outlet elbow when the chain hoists (inverted chain) occurs under the action of elbow swing and hit a man in the chest, resulting in one death.
    Cause of the incident:
    Lack of knowledge workers lifting operation, inverted chain counties hanging position is wrong.rope hoist Since two inverted chain hanging on the uneven County location, on the eastern side elbow down chain tension generated is oblique, while the west side is inverted chain tension generated vertically upwards, elbows straight down. When the elbow accidentally fall off the west side of the studs, three force imbalance, so that elbow eastward swing, hit the worker B body, causing the accident.
   Accident playback:
    A steel company ironworks blast took place on the 9th tuyere burn failure, leadership arrangements repair shop is responsible for maintenance. In the repair shop personnel have not yet reached the scene, the blast furnace A large squad from the work starting, the provisional decision by the group instead of pads ditch repair shop personnel disassemble outlet elbow.hoist equipment Jobs, workers B oblique beam pipe elbow in the ring at the east Xiegua a chain hoist rings, commonly known as "inverted chain." Workers in C gooseneck rings rings just above the elbow at another deputy vertical hanging chain hoists (inverted chain). After hanging down chain, lifting pad ditch group leader approached the eastern side stud elbow, B then loose tipped chains. At this point, the elbow to the west side of the sink, the west side of the pin stud suddenly fell off, pour in the eastern side of the chain under tension, weight 1.2t B to the east of the outlet elbow standing at the swing. Because B location stenosis, can not be avoided, the chest was bruised elbow, was immediately rushed to hospital, but because of severe visceral injury, after she died.
    This was illegal command, the error generated by lifting the job accidents. There are three lessons:
    First, although a large squad A intentioned, but beyond the scope of work, arbitrarily decided by the group instead of pads ditch repair shop personnel demolished outlet elbow, while the small pad on the A team leader ditch error command also does not raise objections.
    Second, operating industrial inverted chain are not positioned correctly, the west side down chain should not be hanging in the vertical direction above the elbow. Because if disposed vertically above the elbow, once the pin disengaged condition, bends back down the East oblique chain under tension, certainly swing to the east side in the horizontal direction, without any force to pull it back, plus on the work surface narrow, east operatives nowhere to dodge, will inevitably lead to crushing accidents.
    Third, the factory management confusion, safety consciousness, workshop and production team leadership and violation of safety regulations, chaotic dry whim. This accident is a profound lesson. Especially leaders must pay attention to safety, only the leaders attach importance to production safety, the following team personnel and frontline operatives may attention to production safety.
    Strengthen safety management and safety education, with particular emphasis on safety education leaders at all levels, improving their safety knowledge, safety awareness and field operations of protection. Strengthen the technical training of workers for the lifting operation. Not only to full-time crane driver and rigger vocational training certificates, but also for other types of work, but may also be engaged in lifting operations lifting operation knowledge workers and technical training, especially for the operation  manual hoist ,  electric hoist , jacks and other small light lifting equipment, basic knowledge and skills to enhance the training. Because the use of these tools and equipment, other types often get hit. Qualifier and then issue a certificate.
    In addition, large-scale industrial production should attach great importance to emphasize the division of labor and discipline, not blind chaos dry whim, emphasizing the civilized and orderly production, strengthen scientific management of enterprises.