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Risk-Based Inspection

API ICP Self Study Notes

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11.3.4 Affected Area 受 影 响 的 区 域<br />

Affected area is also used to describe potential consequences in the field of<br />

risk assessment. As its name implies, affected area represents the amount of<br />

surface area of the plot plan that experiences an effect (toxic dose, thermal<br />

radiation, explosion overpressure, etc.) greater than a pre-defined limiting<br />

value. <strong>Based</strong> on the thresholds chosen, anything (i.e. personnel, equipment,<br />

environment) within the area will be affected by the consequences of the<br />

hazard.<br />

In order to rank consequences according to affected area, it is typically<br />

assumed that equipment or personnel at risk are evenly distributed throughout<br />

the unit. A more rigorous approach would assign a population density with time<br />

or equipment value density to different areas of the unit.<br />

受 影 响 的 划 分 是 评 估 区 域 内 人 员 , 设 备 , 环 境 会 受 到 危 险 的 后 果 . 为 了 根 据 受 影 响<br />

地 区 排 名 后 果 , 它 通 常 假 定 设 备 或 人 员 的 风 险 是 均 匀 分 布 在 整 个 单 元 . 更 加 的 深<br />

入 分 析 如 果 需 要 的 话 , 能 把 设 备 集 中 区 域 , 人 员 分 布 , 时 间 / 人 员 分 布 动 态 , 等 等 , 作 为<br />

考 虑 项 .<br />

API 580<br />

Charlie Chong/ Fion Zhang

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