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Risk-Based Inspection

API ICP Self Study Notes

API ICP Self Study Notes

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Analyzing the effect of in-service deterioration and inspection on the POF<br />

involves the following steps. 在 分 析 在 (1) 职 恶 化 和 (2) 检 查 对 POF 的 影 响 包<br />

括 以 下 步 骤<br />

a) Identify active and credible damage mechanisms that are reasonably<br />

expected to occur during the time period being considered (considering<br />

normal and upset conditions). 识 别 在 考 虑 时 间 段 , 合 理 预 期 可 能 产 生 的 可 信<br />

损 伤 机 理<br />

b) Determine the deterioration susceptibility and rate. For example, a fatigue<br />

crack is driven by cyclic stress; corrosion damage is driven by the<br />

temperature, concentration of corrosive, corrosion current, etc. A damage<br />

accumulation rule may be available to mathematically model this process.<br />

Rather than a given value of the magnitude of the damage mechanism<br />

driving forces, a statistical distribution of these forces may be available<br />

(see API 579-1/ASME FF2-1). 确 定 的 恶 化 易 感 性 和 速 率 . 这 可 以 通 过 损 伤 累<br />

积 规 则 运 用 数 学 模 拟 过 程 计 算 数 据 . 除 了 确 实 值 , 也 能 以 统 计 分 布 体 现 数 据 .<br />

API 579-1/ASME FF2-1 为 例 子 .<br />

API 580<br />

Charlie Chong/ Fion Zhang

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