来自 昏昏睡睡HSE · From Drowsy HSE CSP DAILY LEARNING · DAY 108

事故调查与根因分析深化 · 要点进阶 | Incident Investigation & RCA Deep Dive · Key Points in Depth

第 21 块 · Domain 2 · 项目管理 · 25%Block 21 · Domain 2 · Program Management · 25%第 2 / 5 课 · 要点进阶Lesson 2 of 5 · Key Points in Depth

本课只做一件事：把「事故调查与根因分析深化」的四条要点逐条拆开：机制是什么、什么时候成立、最容易错在哪。

Take the four key points of Incident Investigation & RCA Deep Dive apart: mechanism, conditions, and the usual misread.

本课不涉及：不重复概念定义，也不做综合题——只把要点讲透。
Not covered here: No repeat of definitions, no mixed questions — just the points, in depth.

先看一张图 | One picture first

五问法：每问一层退一步，问到「系统」才停——「人失误」永远不是根因 事件 叉车转弯撞倒行人 为什么 1 视线被货架遮挡 为什么 2 路口未设凸面镜/分道 为什么 3 交通流评估没做过 为什么 4–5＝根因 变更无安全审查 检查表未覆盖人车分流 ✕ 不是根因 「司机不小心」 停在个人层面 措施＝再培训（无效） 纠正措施按层级分级（消除＞工程＞管理），每条写负责人＋验证日期；「加强教育」单独出现即扣分。
图解 / Figure：示意图（本站绘制，非官方图）/ Site-drawn diagram for study, not an official graphic.

本课目标 | Learning objectives

  1. 按顺序复述四条要点各自的机制
  2. 对每条要点说出一个常见误解，并说明为什么错
  3. 判断一个新例子属于哪一条要点

  • Recite the mechanism behind each of the four points
  • Name one common misread per point and why it fails
  • Classify a new example under the right point

    • 图片预览 / Photo preview

    图片经过压缩后保存在当前浏览器。导出失败时，可在下方预览图片上长按保存。/ The photo is compressed and stored in this browser. If download fails, long-press the preview below to save it.

    要点逐条拆 | Point by point

    1. 调查五步：顺序不可换
    Five investigation steps, and the order is fixed
    ①封现场：救完人第一件事是保全现场（拍照前不动任何东西）；②收证据：三类并行，人证有时效（24 小时内记忆衰减过半）；③建时间线：精确到分钟，事件前 8 小时的「变更」重点标注；④找根因：五问法或鱼骨图，问到系统层；⑤定措施并跟踪：每条有负责人与验证日期，验证不到=没完成。
    One: secure the scene (after rescue, move nothing before photographing). Two: collect evidence in all three classes; testimonial decays within 24 hours. Three: build a minute-level timeline, flagging changes in the eight hours before. Four: find root causes via five whys or fishbone down to the system. Five: assign actions with owners and verification dates — unverified means unfinished.
    常见误解 / Common misread：把「定措施」放在「找根因」之前——没有根因的措施只是随手清理。
    Assigning actions before root causes — actions without causes are mere tidy-up.
    2. 证据三类与证据链
    Three evidence classes and the chain of custody
    人证：单独谈、开放式提问、不引导、记原话；访谈者两人（一问一记）。物证：拍照全景-中景-特写，封存工具与部件，维护证据链（谁、何时、何处交接）。书证：许可单、培训记录、维保台账、监控录像——书证最客观，先固定。
    Testimonial: interview one-on-one, open questions, no leading, verbatim notes; two interviewers (one asks, one records). Physical: photograph wide-mid-close, impound tools and parts, maintain chain of custody (who, when, where transferred). Documentary: permits, training records, maintenance logs, CCTV — the most objective; fix it first.
    常见误解 / Common misread：把班长的一句评价写进结论——证词是线索，不是结论；结论由证据链闭合支撑。
    Promoting a supervisor's remark into a conclusion — testimony is a clue; conclusions need a closed evidence chain.
    3. 五问法与鱼骨图：问到系统才停
    Five whys and the fishbone: stop only at the system
    五问法每问一层退一步：叉车撞人→视线遮挡→路口无凸面镜→交通流评估没做过→变更无安全审查（根因层）。鱼骨图按人、机、料、法、环五类铺开，每根刺再问为什么。「人失误」「不小心」「没注意」出现在任何一层都说明还没问到底。
    Each why steps back one layer: forklift strike, sightline blocked, no mirror at the crossing, no traffic-flow assessment ever done, no safety review for the layout change — root-cause territory. The fishbone spreads causes across people, machine, material, method, environment, each spine asked why again. 'Human error', 'careless', 'inattentive' anywhere means keep asking.
    常见误解 / Common misread：五问问了三次就停——问的次数不是重点，「问到的层」才是：个人层未到系统层不停。
    Stopping at the third why — the count does not matter, the layer does: do not stop short of the system level.
    4. 纠正措施分级：层级思想进调查
    Corrective-action tiers: the hierarchy enters the investigation
    消除类：取消作业或替换物质；工程类：防错设计、凸面镜、联锁；管理类：程序、巡查、排班。每条措施写：负责人、完成日期、验证方式与验证日期。考试陷阱：一列措施全是「加强培训与教育」——全是管理层且最弱，等于调查没做完。
    Elimination: cancel the task or substitute the material. Engineering: error-proofing, mirrors, interlocks. Administrative: procedures, patrols, scheduling. Every action carries an owner, a due date, a verification method and date. The exam trap: a list of only 'strengthen training' — all administrative and weakest, meaning the investigation never finished.
    常见误解 / Common misread：措施与根因对不上号——每条措施必须标注它针对哪一层原因，对不上的删掉。
    Actions unlinked to causes — tag each action to the cause it addresses; drop the orphans.

    情景自测 | Scenario check

    考点应用Exam-point application

    这道题考什么：考证据时效与访谈方法。
    Tests evidence timing and interview method.

    事故次日上午，以下哪个动作优先级最高？

    The morning after an incident, which action has top priority?

    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. 用五问法复盘你们最近一起未遂事件，画到系统层为止。
    Run five whys on your latest near miss; go all the way to the system layer.

    学习打卡与笔记 | Progress & notes

    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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