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Safety and reliability evaluation method for flue gas online monitoring system with consideration of common cause failure

A monitoring system and evaluation method technology, applied in the direction of measuring devices, analyzing gas mixtures, gas analyzers, etc., can solve the problems of complex analysis process, lack of clarity and intuition, and achieve easy parameter estimation and qualitative analysis Or quantitative analysis, the effect of strong applicability

Active Publication Date: 2020-01-07
重庆市安全生产科学研究有限公司
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Problems solved by technology

In order to analyze the impact of common cause failure on system reliability, reliability modeling of the system is required. However, dynamic modeling methods such as Markov model and dynamic Bayesian network model have too high requirements for model conditions, and the analysis process is complicated and lacks clarity. sex and intuitiveness

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  • Safety and reliability evaluation method for flue gas online monitoring system with consideration of common cause failure
  • Safety and reliability evaluation method for flue gas online monitoring system with consideration of common cause failure
  • Safety and reliability evaluation method for flue gas online monitoring system with consideration of common cause failure

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Embodiment Construction

[0058] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0059] The technical scheme that the present invention solves the problems of the technologies described above is:

[0060] The invention evaluates the safety and reliability of the sample processing sub-system of the flue gas on-line monitoring system, and improves the rationality of the reliability evaluation by considering the common cause failure when analyzing the failure cause. Firstly, the relevant indexes of the reliability evaluation of the present invention are clarified; secondly, the failure data of the system are collected, and the failure modes are analyzed. Then choose the fault tree analysis method to model the fault tree considering the common cause failure of the sample processing subsys...

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Abstract

The invention makes a request of protecting a safety and reliability evaluation method for a flue gas online monitoring system with consideration of a common cause failure. A typical fault mode of a flue gas on-line monitoring system is analyzed; a common cause failure is processed by a display modeling method by combining a fault tree analysis method; fault events are classified into independentfailure events and common cause failure events and a fault tree model considering the common cause failures is established; and an alpha factor model is used for analyzing the common cause failures ofthe system, so that the safety and reliability of the system are evaluated. According to the invention, the reliability evaluation considering the common cause failure is carried out by using a sample processing subsystem in the flue gas online monitoring system as an example; and reliability calculation is carried out on the system considering the common cause failure based on fault maintenancedata, so that a reliability analysis result more conforming to the actual operation condition is obtained.

Description

technical field [0001] The invention belongs to the field of system reliability engineering, and in particular relates to a method for evaluating the safety and reliability of an online flue gas monitoring system considering common cause failure. Background technique [0002] The flue gas online monitoring system is a typical online monitoring system for real-time monitoring of exhaust pollutant emissions in the atmosphere on the basis of adapting to the environment. The high reliability of the flue gas online monitoring system plays an important guiding role in the safe and stable operation of the device and the avoidance of environmental protection incidents. Therefore, the flue gas online monitoring system is required to have the accuracy and long service life of electromechanical products. [0003] The flue gas online monitoring system is an online analysis instrument with integration, engineering and networking. It has a complex internal structure and a large number of ...

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/007G01N33/0062G01N33/0068
Inventor 杨圆鉴王文和刘洪黄超向月林魂张馨尹王桂华赵志杰何沿江熊勇陈柯含杨洋向里吴怡良卢东
Owner 重庆市安全生产科学研究有限公司
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