1, The overhead crane must be in normal status, especially the safety devices. Hang the signs of the rated lifting capacity on the visible position.

2, In the working condition, prohibit transporting the people with the crane or the hook.

3, Forbid operating the crane without the license and drink driving.

4, In the operation process, concentrating and no talking, smoking and doing the unrelated thing.

5, Keep clean for the crane, not allowed to leave around the tools, flammable, explosive materials and dangerous goods.

6, Forbid overloading operation.

7, No hoisting in the following conditions: binding is not strong, mechanical overloading, unknown signal, cable-stayed the objects buried or frozen in the ground, somebody on the hoisted objects, the flammable materials, explosive devices and dangerous goods without the security protection, the throng liquid materials, the steel rope can’t meet the safety requirements, some faulty in the lifting mechanism.

8, When the crane is traveling along the rail without the obstacles, the hook, spreader and the bottom of the object should be at least 2m off the ground. While crossing the barrier, the hoisting height needs to be 0.5m higher than the top surface of the barrier.

9, The hoisted object is less than 50% of the rated lifting capacity, two mechanisms act at the same time is allowable. While it exceeds 50% of the rated lifting capacity, only one mechanism can operate every time.

10, For the crane with the main and auxiliary hook, do not lift or fall the hooks simultaneously except in the special circumstances. overhead crane

11, Forbid hammering or welding on the lifted objects, and any action is not allowed under the hoisted objects unless there is support device.

12, The inspection and maintenance must be conducted when the power has been shut off and hung on the signs of power failure. If it’s extremely necessary to operate on the condition of power supply, take the protective measures and arrange someone to care on site.

13, Not allowed to throw things from the crane randomly.

14, Check the limit switch and interlock protection device frequently.

15, Not allowed to push the limit switch as a stop way.

16, Forbid lifting the heavy objects when there is something wrong with the hoisting braking system.

17, The lifted objects are not allowed to run over the people or the equipment.

18, Set the grounding wire specifically while welding some part of the crane. Prohibit using the crane body as the grounding wire.

19, When the hook is placed at the lowest limit position, at least two circles of safety loops must be remained on the reel roll.

20, Strictly forbid mutual collision between the cranes and pushing a crane traveling with another set of crane.

21, If the crane is lifting the heavy objects, liquid metal, explosive and dangerous goods, it must be lift slowly 100-200mm off the ground to test the braking reliability.

22, The voltage of the lights for the repairing and inspection must be under 36V.

23, The enclosure of all the electrical devices of the overhead crane should be grounded. If the track for trolley is not welded on the main beam, take the welding ground method. The transformer needs to be grounded on the low pressure side according to the regulations.

24, Do the regular security technical inspection and make the preparations for the pre-checking and pre-repairing.