Crane safety rules

A crane driver
    1.1 crane drivers specialized training, passing the examination by the relevant departments, issued certificate shall be allowed to induction operation is prohibited undocumented workers operating lifting equipment.
    1.2 for lifting operations before the  hoist gantry crane  driver must make sure that all devices are working properly, wire rope safety compliance, formulation, hydraulic and safety devices are complete, reliable, sensitive, non-working parts of the crane sick to run.
    1.3 crane driver must closely cooperate with the commanding officers, to obey the command signal commanding officer. Before the operation must be honking. Command signal unclear if found or an error, the driver the right to refuse; work, drivers for any person to issue an emergency stop signal, you must immediately obey, to be eliminate unsafe factors in order to continue working.
    1.4 crane lifting load only vertically, drag prohibited not load from the ground, to avoid side load.
    1.5 During full load lifting  bridge gantry crane  , disabled simultaneously with two or more operating movements. Crane jib rotation angle should not exceed about 45 °, is strictly prohibited oblique hanging, hanging and fast pull down. Non-hanging pull objects buried in the ground is forbidden to force hanging pull suction affixed to the floor area of ​​larger objects.
    1.6 crane working near energized lines, they should maintain a safe distance with the maximum turning range, allow the closest distance transmission lines below, rain and fog weather safety distance should be increased to 1.5 times. Crane through the transmission line, it must be jib down.
    1.7 Do not overload the crane use, if you use two cranes while lifting a heavy object, someone must obey the unified command, the two planes landing speed to maintain equal, the object's weight must not exceed two machines allowed total weight of 75%. Lashing slings, pay attention to the load distribution, load-sharing per vehicle must not exceed the allowed maximum weight of 80%.
    1.8 cranes at work, between the hook and the pulley should maintain a certain distance, to prevent over-limit the cable winch or crane to pull off back flip. Luffing the jib fully extended to the maximum elevation and minimize the hook position, the winch wire rope on the drum should be kept for at least three turns or more.
    1.9 Boom elevation work not less than 30 °, crane lifting a load should be avoided in case of luffing jib, crane load absolute prohibition on converting lever before stopping sound.
    1.10 cranes at work is prohibited for maintenance and adjustment.
    1.11 stoppages or rest, hanging objects will be allowed to hang in the air.
    1.12 After work, hook and boom should be placed under secure position, and put all the control handle to neutral position.
Two commanding officers
    2.1 Command signal to advance to the  hoist crane  driver made clear, in case of operation command signal is seen in clear, shall be provided transit assistant, accurate signal transmission.
    2.2 Command gestures should be clear, the signal must be clear, are not allowed to wear gloves conductor.
    2.3 lifting objects, you should first check whether the firm tied, ropes through angular, fast liner should be located at the mouth, hanging position the center of gravity must be accurate, and not the object after the force generated in the twisted, curved, Shen, oblique and so on.
    2.4 In the hanging objects fixed in place before the crane driver shall leave their jobs, are not allowed in the rigging or lifting objects floating force the case to interrupt your work.
    2.5 when the crane driver was rejected when lifting heavy objects, commanding officers should take measures to try to alleviate the heavy load cranes, crane overload operation directed strengthen prohibited.