The Research Of A Safety Assessment And Expert System By The Computer-aided

Safety assessment is a quality assessment for design, technics, equipment, process or system structure , function, speciality effect and so on, aimed to safety, by using safety system engineering method synthetically, and it is a method of forecast the systemic safety.A great variety of places for Inflammable and explosive gas or liquid, inflammable powder. The contrast for lability of fire, explode and degree of danger brought out is very great. So we cannot assess via one method, or take different neaten measures. Nowadays, all the assessments on danger of fire and explosive are based on document of assess technology, it needs a large amount of artificial calculating and repeated parameter inputting. At the same time, it can make the assessment result do not meet the reality needs or make wrong result for all the mistakes people may make. For the particularity of assessment object, It may produce hidden trouble in the safety product.This paper studies various methods of safety assessment such as the DOW's medical company exponential evaluate method, MOND's fire, explosive or virose evaluate method, grand accident hidden trouble quantitative evaluate method for dynamite and cartridge company, flammability-. explosive and poisonous great dangerous headstream evaluate method, which are certificated and generally adopted by national and foreign companies, the description and comparatist for characteristic of these methods' to fire and explosive locations are made and they are made as assess model. Users can select one or more than one method to assess for the various conditions and get the more reasonable results. To improve expert system's applicability, we choose the accident tree technique which can be used for both qualitative analysis and quantitative analysis, and for both small systems and super systems as the expert analysis method.According to the characteristic inflammable or explosive conditions and the needs for safety assessment and expert system, we confirm the system's structure as C/S, and form system's logic flow. We use Object Oriented developer language Power- Builder of version 8.0 to develop the software for four assess methods, and make an accident tree analysis software as expert analysis methods to aid danger analyzing. As the same time, we use database management system flat-Sybase of version 11.5 and import the property of the inflammable or explosive materials, technique standard and prevent measures into database. Finally we realize the computer safety assessment and analysis export system.The widely use of the safety system in our country will improve the safety management of inflammable or explosive materials. At last we realize safety management's standardization, institutionalization, programming, scientific to reduce the accident of national inflammable or explosive conditions.