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Steel oil storage tank bottom corrosion rating method

A technology of oil storage tanks and steel, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as errors and achieve the effect of reducing costs

Inactive Publication Date: 2017-08-18
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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  • Application Information

AI Technical Summary

Problems solved by technology

The information of these corrosion parameters is specific and intuitive, comprehensive and quantitative accurately reflects the corrosion state of the tank bottom plate. Li Chunshu also proposed to use these six corrosion characteristic parameters to determine the corrosion state or grade of the oil tank, but the evaluation results are not consistent with the actual oil tank Corrosion has a certain error

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  • Steel oil storage tank bottom corrosion rating method
  • Steel oil storage tank bottom corrosion rating method
  • Steel oil storage tank bottom corrosion rating method

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Embodiment Construction

[0029] The implementation of the present application will be described in detail below in conjunction with the examples, so as to fully understand and implement the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects.

[0030] 1. First collect basic data on the bottom of the oil tank

[0031] Table 1 Basic data and corrosion of oil tanks

[0032]

[0033] 2. 6 corrosion characteristic parameters

[0034] 2.1 Point corrosion probability: According to the probability theory, if the depth of the corrosion pit is randomly distributed, the probability that the depth h of the corrosion pit does not exceed the value d is:

[0035] In the formula, P(h≤d)—the probability that the corrosion pit depth h does not exceed the value d, h—the corrosion pit depth, - the average depth of pits

[0036] In detection data statistics: P(h≤d)=N h≤d / (N+1) (2)

[0037] In the formula, P(h≤d)——the probability t...

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Abstract

The invention discloses a steel oil storage tank bottom corrosion rating method. The method comprises the following steps of: 1, establishing a composite fuzzy matter element matrix R; 2, constructing a correlation coefficient composite fuzzy matter element matrix (as shown in the specification; 3, determining a weight composite matter element (as shown in the specification) of each characteristic index; and 4, determining relevancy composite fuzzy matter elements (as shown in the specification). For corrosion characteristic parameters, a safety assessment method is proposed to evaluate bottom board corrosion states by using fuzzy matter elements, so that the corrosion states of the bottom boards of storage tanks are reflected comprehensively, quantitatively and correctly.

Description

technical field [0001] The application belongs to the technical field of petrochemical industry, and in particular relates to a corrosion rating method for the bottom of a steel oil storage tank. Background technique [0002] During the long-term use of the oil storage tank, the corrosion problem of the bottom plate of the storage tank will appear. At present, the corrosion of many oil tanks is often seen with the naked eye, or smelled, and even the oil tank leaks to find that the bottom of the tank is corroded, causing great losses. At present, when encountering the corrosion problem of oil storage tanks, the description of the corrosion status is still at the qualitative level, and the analysis and processing are often carried out based on the experience of equipment management. There is a lack of quantitative analysis of inspection and testing data, the reflection of corrosion and the grasp of corrosion laws. Not deep enough. Li Chunshu proposed that the corrosion pits ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06N7/06
CPCG06F30/20G06N7/06
Inventor 但琦李玻何超吴松林杨廷鸿王春林
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA