Universal probabilistic safety assessment model conversion system

Abstract

The invention discloses a universal probabilistic safety assessment model conversion system. With respect to the universal probabilistic safety assessment model conversion system, general probabilistic safety assessment automatic modeling methods and rules are combined with decomposition processing of a rich text probabilistic safety assessment model, computer-assisted modeling of the probabilistic safety assessment model can be carried out to a system including common cause failures. The universal probabilistic safety assessment model conversion system mainly comprises three modules: a model processor analyzes and processes the probabilistic safety assessment mode of a given system, model information of the given system is converted and decomposed into a standard model unit; an automatic modeling expert knowledge base stores construction rules of a universal system probabilistic safety assessment model, design and flow information of the given system, and specific probabilistic safety assessment model check rules of the given system and input by the user; and a model checking device analyzes, checks and arranges the standard model unit, changes the error of the standard model unit, and supplements missing probabilistic safety assessment model information, and a perfect system probabilistic safety assessment model is obtained.

Description

technical field [0001] The invention belongs to the field of reliability analysis (ReliabilityAnalysis) and probabilistic safety assessment (Probabilistic Safety Assessment, referred to as PSA) of large-scale complex systems, such as fault tree, event tree and other model recognition processing and automatic modeling related technologies, and specifically relates to a general-purpose probabilistic safety Evaluate the model transformation system. Background technique [0002] PSA model recognition processing: it is to analyze the PSA model of a specific software and convert it into a general or custom PSA model. The PSA model mentioned in this paper usually includes three categories: fault tree model, event tree model and PSA auxiliary model. The model information related to the fault tree generally includes: basic event model, fault tree model (including the information of the fault tree itself and its structure model), logic gate model, common cause failure model, room typ...

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Problems solved by technology

Several existing tree-building methods cannot be well applied to actual engineering systems, especially for the generation of complex process system PSA models. So far there is still no satisfactory method, mainly because of two reasons: There are still some defects in the establishment of the knowledge base of various methods. There is no unified standard for the establishment of fault tree and event tree models, and the correctness is also affected;

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