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Method for computing third party damage failure probability of natural gas pipeline

A natural gas pipeline and failure probability technology, which is applied in the field of calculation of third-party damage failure probability of natural gas pipeline, can solve the problem that there is no promulgated or published semi-quantitative risk assessment method, calculation of quantitative failure probability of natural gas pipeline, third-party damage failure probability of natural gas pipeline, etc. problems, to achieve the effect of being suitable for promotion and application, simplifying the quantitative evaluation process, reducing application difficulty and cost of use

Inactive Publication Date: 2014-01-01
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are no standards and guidelines for semi-quantitative risk assessment methods promulgated or published at home and abroad, and there is no semi-quantitative calculation method for the failure probability of third-party damage to natural gas pipelines
Therefore, it is not yet possible to easily calculate the quantitative failure probability of third-party damage to natural gas pipelines based on existing standards and regulations

Method used

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  • Method for computing third party damage failure probability of natural gas pipeline
  • Method for computing third party damage failure probability of natural gas pipeline
  • Method for computing third party damage failure probability of natural gas pipeline

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Example 1 of the present invention A pipeline for transporting natural gas has a railway construction project within 5m of a certain section of the pipeline, and there is a hidden danger of third-party damage. The failure probability of third-party damage for this pipeline section is calculated.

[0050] S101. Collect the basic parameters of the pipeline according to the "Third Party Destruction Risk Factor Survey Form", and the collected data are shown in Table 4.

[0051] S102. According to the collected basic data, score the environmental conditions respectively. The scoring results are shown in Table 5. After the scoring of each part is completed, the operation management correction coefficient F of the pipeline is calculated according to the following formula:

[0052] F=(71×30%+34×15%+40×40%+39×15%) / 50=0.973.

[0053] S103. Substituting the pipe diameter, wall thickness, buried depth, and operation management correction factor F into the formula to calculate the t...

Embodiment 2

[0063] Example 2 of the present invention A pipeline for transporting natural gas has a residential building construction project within 10m of a certain section of the pipeline, and there is a hidden danger of third-party damage. The failure probability of third-party damage for this pipeline section is calculated.

[0064] S101. Collect the basic parameters of the pipeline according to the "Third Party Damage Risk Factor Survey Form", and the collected data are shown in Table 6.

[0065] S102. According to the collected basic data, score the environmental conditions respectively. The scoring results are shown in Table 7. After the scoring of each part is completed, the operation management correction coefficient F of the pipeline is calculated according to the following formula:

[0066] F=(56×30%+45×15%+69×40%+38×15%) / 50=1.137.

[0067] S103. Substituting the pipe diameter, wall thickness, buried depth, and operation management correction factor F into the formula to calcul...

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Abstract

The invention relates to a method for computing the third party damage failure probability of a natural gas pipeline. The method comprises the following steps that (1), basic data of a pipe section to be evaluated are collected according to design materials and site survey of the natural gas pipeline, wherein the basic data include the pipe diameter, wall thickness, burial depth, earth surface construction activities, conditions of residents and social environment, and current line inspection and management situations; (2), the earth surface construction activities, the conditions of the residents and social environment, and the current line inspection and management situations of the pipe section to be evaluated are graded, and an operation management correction factor is computed according to a grading result; (3), the third party damage failure probability of the natural gas pipeline is computed according to the pipe diameter, the wall thickness, the burial depth and the operation management correction factor. The computing method is easy and convenient to implement, the computing result can show the third party damage failure probability of the natural gas pipeline in a quantized mode, and important governance basis is provided for integrity management of the natural gas pipeline.

Description

technical field [0001] The invention belongs to the field of risk assessment of long-distance natural gas pipelines, and in particular relates to a calculation method for third-party failure probability of natural gas pipelines. Background technique [0002] Pipeline transportation is one of the most efficient and economical methods of natural gas transportation. my country has built natural gas transportation pipelines with a total length of more than 80,000 kilometers, such as the West-East Gas Pipeline. However, the completed natural gas pipelines are often damaged due to third-party reasons such as vehicle rolling, ground plowing or excavation. The U.S. Department of Transportation's (DOT) pipeline accident statistics show that 40% of pipeline accidents are caused by third-party sabotage. Therefore, measures must be taken to ensure the safe operation of natural gas pipelines and maintain industrial production and social stability. [0003] Pipeline risk assessment is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 廖柯熹吴瑕李长俊张淮鑫刘恩斌李卓然
Owner SOUTHWEST PETROLEUM UNIV
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