圆筒型浮式生产储油平台稳性研究分析

Stability research and analysis for cylindrical floating production storage and offloading unit

针对圆筒型浮式生产储油平台,对其静稳性曲线做了分析研究,得到了圆筒型FPSO的稳性特点。根据平台实际作业情况,建立了一系列的典型装载工况,分别按照DNV和MARPOL公约稳性衡准的要求,对这些典型工况进行校核,同时得到满足稳性要求的许用重心高度曲线,给平台操作者提供了参考。经过计算,验证了圆筒型FPSO能同时满足DNV和MARPOL公约的稳性要求。最后对影响圆筒型FPSO稳性的主要因素做了分析研究,得到主要影响因素有主船体外形尺寸、装载工况、进水点位置、舱室划分与布置以及风倾力矩等。

As the cylindrical FPSO being constructed by COSCO shipyard,righting lever curve of the unit is studied and stability character of such cylindrical FPSO is obtained. On the basis of FPSO actual operational conditions,a series of typical loading conditions are set up. Then according to the stability requirements of DNV and MARPOL regulations,stability check of such typical loading conditions is carried out. And the curve of allowable VCG height is calculated to provide reference for FPSO operators. It is concluded that cylindrical FPSO can meet the stability requirements of both DNV and MARPOL regulations after calculation. Main influencing factors on stability of cylindrical FPSO are also researched,and the influencing factors are the main hull dimensions,loading conditions,flooding point positions,tank division and arrangement and wind heeling lever,etc.