CSP Day 80 · Machine Safety & Safeguarding

第 15 块 · Domain 1 · 安全原理高级应用 · 25%Block 15 · Domain 1 · Advanced Application of Safety Principles · 25%第 4 / 5 课 · 情景应用Lesson 4 of 5 · Scenario in Action

本课只做一件事：拿「机械安全与安全防护装置」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 Machine Safety & Safeguarding 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)

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

冲压工位：操作工每 4 秒向模具内手动放一次料（伸手深度 300 mm），现有 40 mm 分辨率安全光幕，实测总停机时间 250 ms，侵入补偿按表取 875 mm。审计发现光幕实际安装在距模具 0.9 m 处，且三个月前有跳接记录一张。

A stamping station: the operator hand-feeds every 4 s to a 300 mm depth; a 40 mm-resolution light curtain is installed, measured stopping time 250 ms, C = 875 mm. The audit finds the curtain mounted 0.9 m from the die — and one jumper record from three months ago.

第一步：算安全距离——D = 1.6 × 0.25 + 0.875 = 1.275 m；现有安装 0.9 m < 1.275 m，不满足，手比停机快 — Step 1 — compute: D = 1.6 × 0.25 + 0.875 = 1.275 m; the current 0.9 m fails — the hand beats the stop
第二步：两个整改方向——把光幕移到 ≥ 1.28 m（同时验证工作台布置仍可操作），或降低 T（改善制动/选更高分辨率减小 C） — Step 2 — two fix paths: move the curtain to ≥ 1.28 m (re-checking ergonomics), or reduce T (brake work) and resolution to cut C
第三步：制度补丁——跳接单据要查清批准人、时限与恢复记录；无旁路管理流程则建立（谁批、多久、何时恢复），并把停机时间纳入定期实测 — Step 3 — patch the system: pull the jumper record for approver, expiry and restoration; if no bypass process exists, build one and put stopping time on a periodic measurement

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「数字不合格」之后的正确动作：改距离或改参数，而不是接受现状。
Tests what follows a failed number: change the distance or the parameters, not accept the status quo.

按上述三步，最优整改是哪一项？

Following the three steps, which fix is best?

A. 把光幕分辨率调成 60 mm，把 C 降下来 Set the curtain resolution to 60 mm to lower C B. 保持位置，把停机时间要求写进操作规程 Keep the position and write the stopping-time requirement into the procedure C. 移装光幕至 ≥ 1.28 m 或通过工程手段降低 T/C 后复算复测 Relocate the curtain to ≥ 1.28 m, or cut T/C by engineering means and re-verify D. 加贴警示标签提醒快放手 Add a warning label telling operators to withdraw hands quickly

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. 把本工位的光幕整改写成一张 3 行工作单（动作/责任人/验证）。
Turn this curtain fix into a three-line work order: action, owner, verification.

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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