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Method for assessing personal casualty losses caused by failed lightning protection device

A lightning protection and personal technology, applied in the field of lightning disaster risk assessment, can solve the problems of multiple influencing factors, assessment, and uncertainty of influence degree.

Inactive Publication Date: 2016-04-20
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

Since there are many reasons for the failure of lightning protection devices, and the degree of influence is uncertain, it is impossible to evaluate multiple influencing factors, so this method is not suitable for the risk assessment of failure lightning protection devices

Method used

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  • Method for assessing personal casualty losses caused by failed lightning protection device
  • Method for assessing personal casualty losses caused by failed lightning protection device
  • Method for assessing personal casualty losses caused by failed lightning protection device

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Embodiment Construction

[0042] The solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043] The method for assessing the loss of personal casualties caused by the failure of the lightning protection device in this embodiment, the steps are as follows:

[0044] 1. The establishment of events in the fault tree, the steps are as follows:

[0045] 1-1) Determine the top event, which is "personal casualty loss" (the first layer of the accident tree).

[0046] 1-2) Analyze the causes related to disasters and accidents according to the relationship between system components.

[0047] 1-3) Investigate the accident and analyze the cause.

[0048] Further, the logical relationship of the cause of the accident is as follows: investigate the logical relationship between the "top event" and the "intermediate cause event" (the second layer of the accident tree). The intermediate cause events "electric shock casualty" and "fire casualty", as long a...

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Abstract

The invention relates to a method for assessing personal casualty losses caused by a failed lightning protection device. The method comprises the steps of 1) determining events in a fault tree; 2) establishing a fault tree of personal casualty losses in a lightning protection system of a building through a logic gate circuit of an AND gate or an OR gate; 3) listing a boolean expression according to a constructed chart of the fault tree, obtaining a minimum cut set and a minimum path set, and determining the structural importance of each basic event; 4) performing a quantitative analysis of the probability of the occurrence of the top events based on the theory of fuzzy mathematics by using an analytical approach of a triangular fuzzy fault tree; and 5) conducting a fuzzy importance analysis, giving system security analysis suggestions, and working out fault preventing measures. The invention has the beneficial effects of enhancing the awareness of reasonable and effective installation of a lightning protection device and preventing both natural disasters and man-made disasters through the fuzzy fault tree analysis of the personal casualty losses resulted from failed lightning protection device of the building.

Description

technical field [0001] The invention belongs to the field of lightning disaster risk assessment, and in particular relates to a method for assessing personal casualty loss caused by a failed lightning protection device. Background technique [0002] Nowadays, the level of social and economic development is getting higher and higher, and people are paying more and more attention to the harm caused by lightning, and lightning protection devices are generally installed in buildings. However, the protection effect of lightning protection devices on lightning is not 100%. Improper installation or invalid lightning protection devices will breed new hazards and even cause personal casualties. In order to take more reasonable lightning protection measures and avoid blind installation, it is necessary to evaluate the loss of personal injury and death caused by the failure of lightning protection devices. [0003] Fault Tree Analysis (FTA) is a method for reliability and safety predi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
Inventor 杨仲江刘健肖扬卢慧慧
Owner NANJING UNIV OF INFORMATION SCI & TECH
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