Risk-Based Inspection

Another approach is used when inaccurate or insufficient failure data exists on
the specific item of interest. In this case, general industry, company or
manufacturer failure data are used. A methodology should be applied to
assess the applicability of these general data. As appropriate, these failure
data should be adjusted and made specific to the equipment being analyzed
by increasing or decreasing the predicted failure frequencies based on
equipment specific information. In this way, general failure data are used to
generate an adjusted failure frequency that is applied to equipment for a
specific application. Such modifications to general values may be made for
each equipment item to account for the potential deterioration that may occur
in the particular service and the type and effectiveness of inspection and/or
monitoring performed. Knowledgeable personnel should make these
modifications on a case-bycase basis.
当 不 准 确 或 不 足 的 故 障 数 据 时 , 另 一 种 方 法 是 使 用 一 般 行 业 , 公 司 或 制 造 商 的 故
障 数 据 . 在 适 当 情 况 下 , 这 些 故 障 数 据 应 按 照 正 在 分 析 的 具 体 的 设 备 进 行 调 整 . 这
数 据 调 整 工 作 应 当 是 由 有 相 关 知 识 的 人 员 进 行 .
API 580
Charlie Chong/ Fion Zhang