Abstract: Accidents such as mechanical collision damage and environmental pollution may occur during the lifting operation of chemical tote tanks on the deep water floating production storage and offloading unit (FPSO). According to the Oil Company’s General Specifications, the quantitative risk analyses of the chemical tote tank dropping onto the top deck of the topside module and the deck of the main laydown area are carried out, and the occurrence probability and impact energy of typical impact events are calculated. The impact of the chemical tote tank dropping onto the deck structure is simulated by using the LS-DYNA 3D software according to DNV Classification Society rules. The plastic strain damage of the deck structure and the impact depth of chemical tote tank are also analyzed to determine the local strengthening design scheme of the deck structure, ensuring the safety of the important equipment under the deck.

Key words: floating production storage and offloading unit (FPSO), topside module, main laydown area, dropped object, risk analysis, nonlinear analysis

摘要： 深水浮式生产储卸油装置（FPSO）上的化学药剂罐吊运作业可能引发机械碰撞损伤、环境污染等事故。按石油公司企业标准要求,对化学药剂罐坠落撞击上部模块顶层甲板和主卸货区甲板进行了定量风险分析,计算了典型撞击事件的发生概率和撞击能量。按DNV船级社规范,应用LS-DYNA 3D软件对化学药剂罐坠落撞击甲板结构进行模拟,分析甲板结构的塑性应变损伤和化学药剂罐的撞入深度,确定了甲板结构的局部加强设计方案,确保甲板下重要设备的安全。

关键词: 浮式生产储卸油装置, 上部模块, 主卸货区, 坠物, 风险分析, 非线性分析