Method and system for risk level evaluation of fuel gas polyethylene pipeline

Abstract

The invention discloses a method for risk level evaluation of a fuel gas polyethylene pipeline, which comprises that accident materials of the fuel gas polyethylene pipeline are collected and summarized, main factors causing a failure of the fuel gas polyethylene pipeline are confirmed, and a risk level evaluation model of the fuel gas polyethylene pipeline is established. The invention also discloses a system for the risk level evaluation of the fuel gas polyethylene pipeline, which comprises a data collection and summarization module, a failure factor confirmation module and a risk level evaluation model establishment module, wherein the risk level evaluation model establishment module comprises a risk level division sub-module, an evaluation index determination sub-module, a quantity field matter element determination sub-module, a joint field matter element determination sub-module, a to-be-evaluated matter element determination sub-module, an evaluation index weight calculation sub-module, a fuel gas polyethylene pipeline relevant function value calculation module and a risk level determination sub-module. The method and the system for the risk level evaluation of the fuel gas polyethylene pipeline provided by the invention comprehensively analyze a risk level of the fuel gas polyethylene pipeline and solve the problem about comprehensive evaluation of qualitative and quantitative factors, which always exists in the risk evaluation.

Description

technical field [0001] The invention belongs to the technical field of pipeline risk assessment, and in particular relates to a risk level assessment method and system for gas polyethylene pipelines. Background technique [0002] Gas pipelines are one of the important infrastructures of cities and are widely used in important fields such as urban development, energy supply and people's lives, and are called the lifeline of cities. With its superior physical and chemical properties, polyethylene pipes have gradually replaced traditional steel and cast iron pipes in the gas pipeline network. The existing gas-fired polyethylene pipelines in my country have been used for 10 to 30 years. With the increase of service time, pipeline accidents occur frequently, resulting in huge losses of personnel and property. Pipeline risk assessment is to optimize the management and maintenance decisions of possible risk links in the pipeline, reduce the probability of accidents or control the ...

AI Technical Summary

Problems solved by technology

Most existing pipeline risk assessment methods in China only focus on buried steel pipelines, and do not or fail to fully consider the essential differences between polyethylene pipelines and steel pipelines, and Kent, which is widely used in pipeline risk assessment These semi-quantitative evaluation methods, such as fuzzy mathematics method and fuzzy mathematics method, have not established an accurate mathematical model and a complete set of calculation methods, which affects the accuracy of the evaluation results.

There is no comprehensive and applicable risk assessment method for the gas-fired polyethylene pipes that are rapidly promoted and used in China, which is not compatible with the development trend of gas-fired polyethylene pipes in the future

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