1、对重大的起重、吊装项目，必须要制定施工方案和安全措施，经交底后方准施工。

1, for major lifting and hoisting projects, it is necessary to formulate construction plans and safety measures.

2、起重量达到起重机械额定负荷，两台以上起重机械抬吊同一物件，起吊精密的、不易吊装的大件，在复杂场所进行大件吊装，起重机在高压输电线路下方或附近工作，都必须要办理安全施工工作证。

2, the weight lifting reaches the rated load, more than two lifting machinery lifting an object, lifting precision, not easy lifting large, large hoisting cranes in complex places, in the high voltage transmission line below or near work, must handle the construction safety work permit.

3、起重机械应备有灭火器材，操作室内应铺设绝缘胶垫，严禁积存易燃物。

3, crane should be equipped with fire extinguishing equipment, operating room should be laying insulation pads, no accumulation of flammable materials.

4、塔吊等高架起重机，应该有可靠的避雷装置。

4, cranes and other overhead cranes, there should be reliable lightning protection device.

5、起重机工作应该有统一的指挥和信号，指挥应使用旗和口哨进行，不宜单独使用对讲机指挥联络。指挥人员应由有经验的起重工担任。

5, crane work should have unified command and signal, command should use flags and whistles, should not use individual walkie talkie command contact. The conductor shall be experienced crane.

6、起重机链条索具在开动及起吊中的每个动作前，司机均应发出信号，无关人员应离开作业区。起吊重物时，任何人不得站在被起吊的重物或吊臂上。

6 crane chain rigging in the start and lifting of each action before the driver should send a signal, irrelevant personnel should leave the work area. When lifting heavy objects, no one shall stand on the heavy lifting or hanging arm.

这些使用方法是链条索具在起重工程中必须要注意的问题，保证五金索具的安全性才能提高施工过程的安全性。

These methods are the problems that must be paid attention to in the hoisting engineering of chain rigging, and ensure the safety of hardware rigging, so as to improve the safety of the construction process.