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Oil storage tank area fire explosion risk assessment method based on fuzzy fault tree

A technology of fuzzy fault tree and oil storage tank area, applied in the field of risk assessment, which can solve the problems of failure mode without accurate assessment and life analysis, ill-considered risk, and inability to perform stress analysis and calculation.

Active Publication Date: 2019-08-23
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, there are some problems in RBI technology. RBI does not have the function of finding key parts in specific equipment and pipelines, and does not consider the defects of structures and welds. Pipeline analysis cannot be segmented, and stress analysis and calculation cannot be performed. For some Inadequate risk consideration, relatively vague concept of "failure", lack of accurate assessment and life analysis of specific failure modes

Method used

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  • Oil storage tank area fire explosion risk assessment method based on fuzzy fault tree
  • Oil storage tank area fire explosion risk assessment method based on fuzzy fault tree
  • Oil storage tank area fire explosion risk assessment method based on fuzzy fault tree

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Embodiment 1

[0069] The present invention provides a fire and explosion risk assessment method for oil storage tank farms based on fuzzy fault tree, and the assessment steps are as follows:

[0070] S1: Fault tree analysis, starting from a possible event, analyzing the triggering event, direct cause and indirect cause of the accident layer by layer, and analyzing the mutual logical relationship of these accident causes, using a logic tree diagram to connect these causes and their The logical relationship is expressed, and the analysis steps are as follows:

[0071] S1.1: In the preparation stage, determine the system to be analyzed, reasonably determine the boundary conditions of the system, be familiar with the system, fully understand the operation status or production process of the system, investigate accidents, and collect data on previous accidents of the system, including attempted failures Accidents, analyze the past, present and future possible failure modes of the system, and the...

Embodiment 2

[0122] A fire and explosion risk assessment method for oil storage tank farms based on fuzzy fault tree, the assessment steps are as follows:

[0123] Carry out fault tree analysis on the oil storage tank area, the specific steps are as follows:

[0124] Firstly, the top event is determined. The main types of accidents in the oil storage tank area are fire and explosion, and the consequences of the general accident are very serious, so the combustion and explosion accident in the oil storage area is taken as the top event;

[0125] Then analyze the cause of the accident, see figure 1 As shown, there are three conditions that cause a fire in the oil storage tank area: combustible substances, ignition sources, and oxygen. Combustible substances are mainly oil vapor formed by oil leakage and evaporation. Smoking, sparks generated by metal impact, electrostatic discharge, lightning strikes, etc., can cause fire and explosion when combustible substances reach the explosive limit. ...

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Abstract

The invention discloses an oil storage tank area fire explosion risk assessment method based on a fuzzy fault tree, specifically relates to the technical field of risk assessment. The method comprisesthe steps of S1, accident tree analysis: starting from a possible event, analyzing trigger events, direct reasons and indirect reasons causing an accident layer by layer, analyzing mutual logic relationships of the accident reasons, and representing the reasons and the logic relationships by using a logic tree diagram, and the analysis steps are as follows: the oil storage tank area is evaluatedby adopting the accident tree, the analytic hierarchy process and the fuzzy comprehensive evaluation; dangerous factors of an oil storage tank area is identified, an accident tree is constructed, structural importance analysis is carried out, an evaluation set of fuzzy comprehensive evaluation is scientifically selected, fuzzy comprehensive evaluation is carried out, the danger level of the tank area is evaluated, factors influencing the occurrence of accidents are comprehensively considered, the oil storage tank area is accurately evaluated, and the accuracy of risk evaluation is improved.

Description

technical field [0001] The invention relates to the technical field of risk assessment, and more specifically, the invention relates to a fire and explosion risk assessment method for an oil storage tank farm based on a fuzzy fault tree. Background technique [0002] In recent years, with the development of society, the scale of oil storage tank farms has become larger and larger, and at the same time, the risk of oil storage tank farms has also become higher and higher. There are a large amount of flammable and explosive substances stored in the oil storage tank area, which is very prone to fire and explosion accidents. Once a fire occurs in the oil storage tank area, the fire will spread quickly and quickly, and it will be accompanied by dense fog and poisonous gas. The fire is difficult to control. After the fire, under the action of radiant heat, the oil will boil or even spray out of the oil tank, making the accident worse. A fire in the oil storage tank area is usuall...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0635G06Q10/06393G06Q50/265Y02P90/30
Inventor 陈坤魏鑫陈序刘德欢
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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