Emergency measures for the lifting of prefabribrio components(1) Sudden safety limit device out of control in tower lifting operation, impact guardrails and adjacent tower cranes or falling objects, or violation of safety regulations, resulting in major accidents (e.g. dumping, broken arms);(2) Various types of accessories and slings may appear during the lifting process, as well as the wear of the tools at hand, making it impossible to recycle.(3) After the PC wall enters the field, there may be some quality problems.For the above possible problems, will cause the project can not be carried out. Therefore, in order to prevent and solve the above-mentioned problems, the following measures have been taken:(1) The tower should be inspected in detail before lifting the work before it can be put into use.(2) Before the PC components are hoisted, sufficient staff, adequate tools at hand and additional operating accessories must be organized in case of need.(3) Before the PC wall enters the field, the wall shall be inspected in advance at the PC component factory, and then shipped to the site after the quality has passed.