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Polyethylene buried pipe risk evaluation method

A technology of risk assessment and polyethylene pipes, applied in resources, instruments, electrical digital data processing, etc., can solve the hidden dangers of residents, affect the normal transportation of natural gas and other problems, achieve the effect of being easy to operate in engineering and filling the gaps in risk assessment

Pending Publication Date: 2021-05-07
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, various defects will inevitably occur in the process of pipeline manufacturing, transportation, installation and use.
On the one hand, the existence of these defects will affect the normal transportation of natural gas, and on the other hand, it will cause great safety hazards to nearby residents

Method used

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  • Polyethylene buried pipe risk evaluation method
  • Polyethylene buried pipe risk evaluation method
  • Polyethylene buried pipe risk evaluation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] A risk assessment is required for a polyethylene pipeline in use, and the specific steps are as follows:

[0129] Step 1: In the initial stage of risk assessment, it is necessary to collect materials from the design, installation, and use of polyethylene pipelines, and complete a comprehensive inspection report according to steps 1 to 6 to provide data support for the scoring process.

[0130] Step 2: Review the evaluation polyethylene pipeline data and complete the data review report, mainly including: design specification, completion acceptance specification, commissioning date, pipeline start and stop position, pipeline length, design temperature, design pressure, pipeline specification, working medium, anti-corrosion layer, safety management data, technical file data, operating status data, last inspection report review, etc.

[0131] Step 3: Macroscopic inspection of polyethylene pipelines, mainly including: pipeline location and direction, ground warning devices, ...

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Abstract

The invention provides a polyethylene buried pipe risk evaluation method.Based on GB / T27512 and aiming at polyethylene pipe characteristics, polyethylene pipeline scoring weights are reconstructed, failure factors and corresponding scoring rules are increased,a new failure possibility evaluation method is provided The method comprises the following steps: firstly, obtaining design, installation and completion files of an evaluated pipeline, and line patrol along the way and field survey and excavation measurement data; carrying out data arrangement on all influence factors, and preprocessing to complete a comprehensive inspection report; based on an analytic hierarchy process and an expert scoring method, calculating weights of third-party damage, corrosion and aging, equipment (devices) and personnel operation and intrinsic safety factors of the polyethylene pipe; dividing the evaluated pipeline, completing scoring according to scoring rules, and calculating a failure possibility and a failure consequence score according to a pipeline scoring result; and comprehensively calculating the risk value of each pipe section, and dividing risk levels.

Description

technical field [0001] The invention relates to the field of risk assessment of in-use gas and oil pipelines, in particular to a method for risk assessment of buried polyethylene pipes. Background technique [0002] After completing the conversion from coal to petroleum, the energy consumption structure is developing towards high-efficiency, clean, low-carbon or carbon-free natural gas, nuclear energy, solar energy, wind energy, hydrogen energy and other new energy sources. Polyethylene Pipe (PE) has the advantages of good corrosion resistance, toughness, light weight, and easy transportation, and is recognized as a "green pipeline". It is widely used in the fields of oil and gas transportation and water supply and drainage. In recent years, it has been gradually applied to the transportation of cooling water in nuclear power plants. At present, polyethylene pipes have been widely used in the gas field and have broad market prospects. Statistics at the beginning of this ce...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06F113/14G06F119/02G06F119/04G06F119/14
CPCG06F30/20G06Q10/0635G06F2113/14G06F2119/02G06F2119/04G06F2119/14
Inventor 赵建平赵兴民
Owner NANJING UNIV OF TECH
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