Hazards that result from inappropriate exception-handling tasks and processes performed in response to abnormal process conditions are not easily identified or cannot be identified at all, using only traditional hazard identification methods, such as normal hazard and operability (HAZOP) studies, failure mode and effects analysis, what-if analysis, procedural HAZOP, and job safety analysis. This study thus proposes an efficient chemical hazard-based method for identifying such potential hazards. The method comprises a checklist for identifying intrinsic chemical hazards and the exception tasks and processes which may initiate such hazards and a worksheet for performing the chemical hazard assessment of the identified exception tasks and processes. The checklist provides management with a useful tool for identifying the exception tasks and processes which may result in chemical hazards. Meanwhile, the hazard assessment worksheet provides an effective tool for evaluating the potential chemical hazards of the identified exception-handling tasks and processes, assessing the effectiveness of existing safeguards for preventing and reducing such hazards, and drawing up additional recommendations if required. The operation of the proposed method is demonstrated through two case studies.

中文翻译：

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一种有效的方法，用于识别异常处理任务和由异常过程条件衍生的过程的化学危害

因响应异常过程条件而执行的不适当的异常处理任务和过程导致的危害不容易识别或根本无法识别，仅使用传统的危害识别方法，例如正常危害和可操作性 (HAZOP) 研究、故障模式和影响分析、假设分析、程序 HAZOP 和工作安全分析。因此，本研究提出了一种有效的基于化学危害的方法来识别此类潜在危害。该方法包括用于识别内在化学危害和可能引发此类危害的异常任务和过程的检查表，以及用于对识别的异常任务和过程进行化学危害评估的工作表。检查表为管理层提供了一个有用的工具，用于识别可能导致化学危害的异常任务和过程。同时，危害评估工作表为评估已识别的异常处理任务和流程的潜在化学危害、评估预防和减少此类危害的现有保障措施的有效性以及在需要时制定额外建议提供了有效工具。通过两个案例研究证明了所提出方法的操作。并在需要时制定额外的建议。通过两个案例研究证明了所提出方法的操作。并在需要时制定额外的建议。通过两个案例研究证明了所提出方法的操作。