Abstract The work studies the ship structural corrosion degradation allowance, analysing several sets of corrosion thickness measurements collected from operating tankers. The corrosion degradation process is modelled by a time-dependent exponential function with parameters adjusted to real corrosion thickness measurement data. Corrosion margins of redundant ship structures with severe consequences of failure are derived based on two approaches, probabilistic closed-form solution and risk-based direct approach. The developed closed-form solutions for the corrosion allowance for different corrosion environments can be used in the design, avoiding a complex risk-based assessment.

中文翻译：

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基于风险的油轮腐蚀裕度

摘要 该工作研究了船舶结构腐蚀退化裕量，分析了从运营中的油轮收集的多组腐蚀厚度测量值。腐蚀退化过程由时间相关的指数函数建模，参数根据实际腐蚀厚度测量数据进行调整。具有严重失效后果的冗余船舶结构的腐蚀裕度是基于两种方法推导出来的，概率封闭形式解决方案和基于风险的直接方法。在设计中可以使用针对不同腐蚀环境的腐蚀余量开发的封闭形式解决方案，避免了复杂的基于风险的评估。