来自 昏昏睡睡HSE · From Drowsy HSE CSP DAILY LEARNING · DAY 20

风险矩阵与控制层级实操 · 情景应用 | Risk Matrix & Hierarchy in Practice · Scenario in Action

第 3 块 · 备考基线 · Exam Baseline第 4 / 5 课 · 情景应用Lesson 4 of 5 · Scenario in Action

本课只做一件事：拿「风险矩阵与控制层级实操」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 Risk Matrix & Hierarchy 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.

先看一张图 | One picture first

风险矩阵：后果（横轴）× 可能性（纵轴），交叉格决定处置优先级。
图解 / Figure：风险矩阵：后果（横轴）× 可能性（纵轴），交叉格决定处置优先级。
Risk matrix: consequence × likelihood; the cell you land in sets the priority. 来源 / Source: US gov，公有领域 public domain，经 Wikimedia Commons（File:Risk_Matrix_Simple.jpg）Source: US government, public domain, via Wikimedia Commons (File:Risk_Matrix_Simple.jpg)

本课目标 | Learning objectives

  1. 按三步走完一个场景，并说出每一步的依据
  2. 区分「更有效」与「更先做」两类答案
  3. 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

    • 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.

    场景走一遍 | Walk the scenario

    打磨工序：粉尘浓度超过职业接触限值 2 倍。现有措施：普通防尘口罩、告知海报。班组提出四个方案：A 换用低尘磨料并加装局部排风；B 配发 N95 并要求佩戴；C 轮岗缩短单人接触时间；D 增设警示标志与培训。

    Grinding station: dust is 2× the exposure limit. Existing measures: basic masks and posters. Four proposals: A switch to low-dust abrasive plus LEV; B issue N95 with mandatory wearing; C rotate workers to cut individual exposure; D more signage and training.

    1. 第一步：定位问题层级——这是「能量/危害源未隔离」，不是「人不知道」 — Step 1 — locate the level: the source is not isolated; this is not an awareness gap
    2. 第二步：按控制层级从上往下扫——替代（低尘磨料）与工程（排风）都在 B/C/D 之上 — Step 2 — sweep the hierarchy downward: substitution and engineering outrank B, C and D
    3. 第三步：检查剩余风险——A 之后仍需呼吸防护作为补充，但它是补充不是答案 — Step 3 — check residual risk: after A, respirators remain a supplement, not the answer

    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：考控制层级排序：把四个选项按「隔离能量的有效性」排队。
    Hierarchy ranking: order the options by how effectively they isolate the hazard.

    按控制层级，最优先采取的方案是？

    Per the hierarchy of controls, the priority action is:

    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. 把该工位画进 5×5 风险矩阵：固有等级、加装 A 方案后的剩余等级，并写出降级的依据。
    Plot this station on a 5×5 matrix: inherent level, residual level after option A, and the justification for the downgrade.

    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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