对于使用时间超过15年以上、处于严重腐蚀环境(如海边、潮湿地区等)或者强风区域、使用频率高的大型起重机,TSG Q7015—2008《起重机定期检验规则》第十四条规定应当增加其他检验手段,必要时进行安全评估。此外,对于使用时间接近设计寿命的起重机或出现异常现象但原因未明的起重机以及由于交叉作业等原因发生碰撞的起重机,使用单位出于自身安全考虑,一 For large cranes that have been used for more than 15 years and are in severe corrosive environment (such as seaside and wet areas) or in high winds, the frequency of use of large cranes should be increased by Article 14 of TSG Q7015-2008 “Rules for Periodical Inspection of Crane” Means, if necessary, safety assessment. In addition, the use of time close to the design life of the crane or anomalies but unexplained cranes and due to cross-docking and other reasons Crash crane, the use of units for their own safety considerations, one