CSP Day 175 · FMEA in Practice · Scenario in Action

第 34 块 · Domain 3 · 风险管理 · 15%Block 34 · Domain 3 · Risk Management · 15%第 4 / 5 课 · 情景应用Lesson 4 of 5 · Scenario in Action

本课只做一件事：拿「FMEA 实操」做一次真实判断：按步骤走完，答案由推导得出而不是靠回忆。

Use FMEA in Practice in one real decision: follow the steps, derive the answer instead of recalling it.

本课不涉及：不新讲概念，也不做多题连练——只走一个场景。
Not covered here: No new concepts, no question drills — one scenario, walked through.

本课目标 | Learning objectives

按三步走完一个场景，并说出每一步的依据
区分「更有效」与「更先做」两类答案
把结论写回自己的术语表

Walk a scenario in three steps and justify each

Separate the more effective answer from the earlier step

Write the conclusion back into your glossary

上传个人图片（可选）/ Add a photo (optional)

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场景走一遍 | Walk the scenario

注塑车间一台液压机的 FMEA 有一行：模式「安全光幕失效」、原因「继电器触点粘连」、S=10、O=3、D=4（依据：「每班点检看指示灯」）、RPN=120。设备制造商报价：换用带触点监测的安全继电器（可检测触点粘连并停机）+ 硬接线双通道回路，共 4.8 万元。

An injection-molding press FMEA row reads: mode 'safety light curtain fails', cause 'welded relay contacts', S=10, O=3, D=4 based on 'per-shift indicator-light check', RPN=120. The OEM quotes 48,000 yuan for a safety relay with contact monitoring (detects welding and stops) plus a dual-channel hardwired loop.

第一步：审评分——S=10 涉及人身伤害，任何 RPN 都必须行动。D=4 虚高：点检看的是「指示灯亮不亮」，测不出触点粘连（粘连时回路可能仍显示正常）——探测器具错了，D 应重评至 8–9 — Step 1 — audit the scores: S=10 means injury is on the table, so act at any RPN. The D of four is inflated: checking an indicator lamp cannot see welded contacts, which may still show normal — wrong instrument, so rescore D at eight or nine
第二步：评改进方案——双通道硬接线回路降 O（单通道失效不再导致功能丢失）；触点监测降 D（粘连被自动检出并停机）。这是「改设计+加有效探测」的组合：S 无法降（后果仍是伤害），钱应花在 O 与 D 上 — Step 2 — judge the fix: the dual channel cuts O (one channel failing no longer loses the function); contact monitoring cuts D (welding is auto-detected and the press stops). Since S cannot drop — the consequence is still injury — spend on O and D
第三步：定案与回流——批准 4.8 万元改造（写明 S=10 的不可接受性作为理由）；改造后重打分：O 3→1（双通道）、D 8→2（自动监测）；更新 FMEA 表、纳入 MOC 记录与点检新清单（改为试验触点监测功能本身）；本行从行动清单销项 — Step 3 — decide and flow back: approve the 48,000 with S=10 as the justification; rescore after retrofit, O three to one with dual channel and D eight to two with automatic monitoring; update the FMEA, fold it into MOC records and a new checklist that now tests the monitoring function itself; close the row

走完这三步再往下答题；答案不是背出来的，是按步骤推出来的。/ Work the three steps before answering — the answer is derived, not recalled.

情景自测 | Scenario check

考点应用Exam-point application

这道题考什么：考 D 评分虚高与行动理由。
Tests inflated D and action rationale.

该行 D=4 的最大问题是？

What is the biggest problem with D=4?

A. 数字太小 The number is too small B. 探测器具选错：点检指示灯探测不到触点粘连，D 应按 8–9 重评 Wrong detection instrument: a lamp check cannot see welded contacts, so D should be rescored at eight or nine C. 没有英文说明 No English note given D. 点检频次太高 The check is run too often

自编练习题，不是 BCSP 官方真题，也不能用来预测分数。 / Original practice item, not an official BCSP exam question.

动手练 | Practice

1. 找一条 S≥9 的失效，写一页处理理由（不看 RPN）。
Pick one failure with S at nine or above and write a one-page case ignoring RPN.

学习打卡与笔记 | Progress & notes

完成 BCSP 官方自测并记录结果 / Complete the BCSP self-assessment 建立公式表与英文术语表 / Create the formula sheet and glossary 完成情景题与两道巩固题 / Complete the scenario and both review prompts 通读蓝图 PDF 的领域与权重 / Read the blueprint domains and weights

已完成 0/4 项 / 0/4 tasks complete

连续学习 / Learning streak: 0 天 / 0 days

进度保存在当前浏览器，不会自动跨设备同步。/ Progress is stored in this browser only.

PNG 学习记录预览；可长按图片保存 / PNG card preview; long-press to save

可靠来源 | Official references

BCSP — CSP Examination Blueprint (CSP11)

BCSP — Official Self-Assessments

BCSP — Certified Safety Professional (CSP)

Pearson VUE — CSP 考试预约 / Scheduling

本课为一般性学习资料，不替代现场专业评估、法规要求或组织程序。/ Educational content only.

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