The Development of Computer Aided Risk Assessment System and It's Application

计算机辅助风险评估系统的开发及其应用

• 批准号: 07680465
• 负责人: SUZUKI Kazuhiko
• 金额: $ 1.28万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07680465/
• 关键词: HAZOP; Risk Assessment; Hazard Analysis; Knowledge Engineering; Expert System; オペラビリティ・スタディ; 安全評価; システム安全工学; 安全性評価; システム工学

An algorithm for application of knowledge engineering to automated HAZOP has been developed. The development of the expert system for HAZOP first required the consideration of the types of knowledge required for the study, and how this information could be incorporated into the system. The knowledge required to perform HAZOP can be separated into two types ; (1) the generic knowledge, (2) the plant specific knowledge. This knowledge interacts with each other to perform HAZOP analysis.The generic knowledge consists of guidewords, property words (process words), action required, components failure and fault propagation models, which are described in the form of decision table and suggested actions. This knowledge is developed in a process-independent manner and is applicable to wide variety of process flow sheets. The plant specific knowledge consits of information about materials, reactions, and the plant structure (P and I diagram). The plant specific knowledge varies from plant to pla … More nt an has to be provided by the user. Expert system for HAZOP consists basically of the knowledge bases (the plant specific knowledge base, the generic knowledge base) and the inference engine. The user requests the expert system to perform the HAZOP analysis by specifying a process variable deviation in a process unit or pipe line. Each process variable of equipment is studied in sequence by searching the knowledge base, using key words to describe deviations. And this search builds cause and consequence equations and develops action items. Cause equations describe logical relationships between considered deviation and its possible causes. Consequence equations describe how major items of equipment and process variables respond to single deviation. The computer program translates cause equations and consequence equations into HAZOP and tabulates in HAZOP record sheets. The expert system for this work is written in Prolog - a logic programming language. The language is excellent for expressing logic and performing symbol manipulation and hence has ready application to the expert system. The present application was developed in an EWS environment. Less

提出了一种将知识工程应用于自动HAZOP分析的算法。HAZOP专家系统的开发首先需要考虑研究所需的知识类型，以及如何将这些信息纳入系统。执行HAZOP所需的知识可以分为两类：（1）一般知识，（2）工厂特定知识。这些知识相互交互以进行HAZOP分析。通用知识由引导词、属性词（过程词）、所需行动、组件故障和故障传播模型组成，以决策表和建议行动的形式描述。这些知识是以独立于工艺的方式开发的，适用于各种工艺流程图。植物特定的知识包括有关材料，反应和植物结构（P和I图）的信息。植物特异性知识因植物而异 ...更多信息 必须由用户提供。HAZOP专家系统主要由知识库（工厂专用知识库、通用知识库）和推理机组成。用户要求专家系统通过指定过程单元或管线中的过程变量偏差来执行HAZOP分析。通过对知识库的搜索，对设备的各个过程变量进行顺序学习，用关键词描述偏差。这种搜索建立了原因和后果方程，并制定了行动项目。原因方程描述了所考虑的偏差与其可能原因之间的逻辑关系。后果方程描述了设备和过程变量的主要项目如何对单个偏差作出响应。计算机程序将原因方程和后果方程转换为HAZOP，并在HAZOP记录表中列出。专家系统的这项工作是写在Prolog -一种逻辑编程语言。该语言是优秀的表达逻辑和执行符号操作，因此有现成的应用程序的专家系统。本申请在EWS环境中开发。少

项目成果

Yukiyasu Shimada, Kazuhiko Suzuki, Hayatoshi Sayama and Ichiro Nojiri: "Computer-aided Operability Study for Batch Plants" Kagaku Kougaku Ronbunsyu. Vol.22, No.5. 1111-1123 (1996)

Yukiyasu Shimada、Kazuhiko Suzuki、Hayatoshi Sayama 和 Ichiro Nojiri：“间歇工厂的计算机辅助可操作性研究” Kagaku Kougaku Ronbunsyu。

島田行恭: "Computer-aided Operability Study" Computer & Chemical Engineering. 20.6/7. 905-913 (1996)

Yukiyasu Shimada：“计算机辅助可操作性研究”计算机与化学工程20.6/7（1996）。

Edited by Raj B.K.N.Rao,R.A.Smith,J.L.Wearing: "CONDITION MONITORING and DIAGNOSTIC ENGINEERING MANAGEMENT" Sheffield Academic Press, 1198 (1996)

Raj B.K.N.Rao、R.A.Smith、J.L.Wearing 编辑：“状态监测和诊断工程管理”谢菲尔德学术出版社，1198 (1996)