来自 昏昏睡睡HSE · From Drowsy HSE CSP DAILY LEARNING · DAY 170

PHA 与 HAZOP · 情景应用 | PHA & HAZOP · Scenario in Action

第 33 块 · Domain 3 · 风险管理 · 15%Block 33 · 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「PHA 与 HAZOP」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 PHA & HAZOP 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

  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

    一家化工厂对「反应釜冷却水系统」做 HAZOP。节点：冷却水泵→夹套→回水管线，设计意图「连续供冷却水把反应热移出，维持 65 ℃」。团队里有人主张「先看压力参数」，有人主张「先看流量」。你负责召集与记录。

    A chemical plant runs HAZOP on a reactor cooling-water system. The node runs pump, jacket and return line, with intent to supply continuous cooling water and remove reaction heat at 65 C. One team member wants pressure first; another wants flow. You chair and record.

    1. 第一步：定参数优先级——本节点的设计意图是「移热」，主参数是流量，次参数是温度与压力。先过流量×{无/少/多/反向}，再过温度×{高/低}，压力×{高/低}。理由：流量偏差直接摧毁移热能力，是最短因果链 — Step 1 — order the parameters: the intent is heat removal, so flow is primary; temperature and pressure secondary. Walk flow against none, less, more and reverse; then temperature high and low; then pressure high and low. Flow deviation destroys heat removal on the shortest causal path
    2. 第二步：走格填五栏——「流量·无」：原因=泵跳闸/阀误关/过滤器堵/公用工程中断；后果=反应热移不出→温度急升→超压→可能失控释放；保护=高温联锁停进料、安全阀、备用泵自启（需判独立性：备用泵若与主泵同电源则共因）；建议=增加独立温度高高联锁并每季试验、过滤器加差压报警 — Step 2 — fill the row: flow none, causes being pump trip, valve mis-position, filter plugging or utility loss; consequences being lost heat removal, temperature excursion, overpressure and possible runaway release; safeguards being high-temperature feed trip, relief valve and auto-start spare pump — check independence, since a spare on the same power source is common cause; recommendations being an independent high-high temperature trip proof-tested quarterly and a differential-pressure alarm on the filter
    3. 第三步：闭环与再验证——把建议录入行动表（责任人=工艺工程师，期限=90 天，验证=联锁试验记录）；本节点共生成 11 条建议，闭环率进季度评审。定再验证时点：5 年后，或冷却系统重大变更/发生超温事件时即时重做。会议记录写清「未讨论项」，下次接续 — Step 3 — close and schedule: log recommendations with owner, a 90-day due date and verification as the trip test record; eleven recommendations from this node feed the quarterly closure review. Set revalidation at five years, or immediately on major cooling-system change or any excursion. Record open items so the next session resumes

    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「无流量」的后果推导。
    Tests the consequence of no flow.

    对冷却水管线做 HAZOP，参数「流量」配引导词「无」。对应偏差与典型后果是？

    HAZOP on a cooling line: parameter flow with guide word none. Deviation and typical consequence?

    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. 为一个节点完成五栏表的前 5 行，并标出哪条保护属共因。
    Complete five rows of the five-column table for one node and flag the common-cause safeguard.

    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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