The System Safety Analysis Method Contrast Analysis

2012 ◽  
Vol 170-173 ◽  
pp. 492-495
Author(s):  
De Chao Lv
Keyword(s):  
Production System ◽  
Safety Analysis ◽  
Analysis Method ◽  
Safe Operation ◽  
System Safety ◽  
Advantages And Disadvantages ◽  
Theory To Practice ◽  
Analysis Methods ◽  
Contrast Analysis

The system safety analysis method is the foundation to guarantee the safe operation production system. In this paper, all kinds of system safety analysis methods are introduced. Contrast analysis is fully used to grasp the advantages and disadvantages of each method and their application scopes, which will make it better to apply the theory to practice.

System Safety Analysis Method Based on Real-Time Online Risk Monitoring Technology

2018 ◽  
Author(s):  
Sijuan Chen ◽  
Zhijian Zhang ◽  
He Wang ◽  
Min Zhang ◽  
Huazhi Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Dynamic Characteristics ◽  
Safety Analysis ◽  
System Component ◽  
Analysis Method ◽  
System Safety ◽  
Monitoring Technology ◽  
The Real ◽  
Online Risk ◽  
Risk Monitoring

In the continuous operation process of Nuclear Power Plant (NPP), its configuration is full of variety over time because of the system’s dynamic characteristics. There is a great need to update the risk/safety analysis models when it becomes necessary to reflect those dynamic characteristics of the system/component. Most of the current methods for risk/safety analysis belong to the scope of safety pre-analyzing, which analyzes the system risk/safety before system being in service. The main purpose of these safety pre-analyzing is to guide system design and optimization, but the real-time operational risk/safety analysis of NPPs is considered little. In order to know well the real-time risk/safety for system, a System Safety Analysis Method based on Real-time Online Risk Monitoring Technology is proposed. The safety risk model is established based on the modular fault tree that is used to represent logic structure of system. The real-time risk/safety is monitored according to the correspondence monitoring signal or data of component/system. Simultaneously the method can account for the change of risks based on the established mapping relationship between the state transition rules and corresponding risk/safety model updating rules. Finally, a case monitoring the safety for the system of two redundant pumps was used to demonstrate the effectiveness of the method.

Review on Mechanism and Analysis Methods of Low Frequency Oscillation in Power System

2014 ◽  
Vol 986-987 ◽  
pp. 2010-2013
Author(s):  
He Nan Wang ◽  
Chao Zheng ◽  
Jie Ren ◽  
Jian She Tian ◽  
Hong Tao Liu ◽  
...  
Keyword(s):  
Power System ◽  
Low Frequency ◽  
Generation Mechanism ◽  
Analysis Method ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Advantages And Disadvantages ◽  
Analysis Methods ◽  
System Interconnection ◽  
Main Factor

Low frequency oscillation caused by system interconnection has been the main factor to threat the secure operation of power grid. It’s significant to research on the problem of low frequency oscillation. This paper summarizes the generation mechanism and analysis methods of low frequency oscillation. Each analysis method has both advantages and disadvantages.

scholarly journals Classification and Control of Key Factors Affecting the Failure of Aviation Piston Turbocharger Systems Using Model-Based System Safety Analysis

2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Mengyao Bao ◽  
Shuiting Ding ◽  
Guo Li
Keyword(s):  
Failure Probability ◽  
Control Strategies ◽  
Safety Analysis ◽  
System Failure ◽  
Key Factors ◽  
System Safety ◽  
Safety Control ◽  
Factors Affecting ◽  
Model Based ◽  
Analysis Methods

Turbocharging is an effective way to address the problem of reduction in power and increase in fuel consumption of aviation piston engines during high-altitude flight. However, turbochargers have greatly increased the degree of complexity of power systems. The model-based system safety analysis methods for the safety analysis of turbocharging systems are introduced in this study to overcome the limitations of the traditional safety analysis methods regarding complex matching and coupled safety issues. On the basis of the established system models and the formed failure mode work boundaries and safety boundaries, the column profile coordinates F of correspondence analysis with the numerical deviation of the key factors are used to identify the key factors affecting failure, thereby proposing safety control strategies in a targeted manner. Then, the failure probability of the turbocharging system is assessed through the Monte Carlo method. System failure modes and probabilities before and after the execution of safety control strategies are compared to accurately determine the effectiveness of those strategies. The verification examples show that a safety control strategy that adjusts the diameter of the wastegate e 2 can reduce system failure probability and enhance safety level.

Hybrid safety analysis method based on SVM and RST: An application to carrier landing of aircraft

2015 ◽  
Vol 80 ◽  
pp. 56-65 ◽  
Author(s):  
Ying Dai ◽  
Jin Tian ◽  
Hao Rong ◽  
Tingdi Zhao
Keyword(s):  
Safety Analysis ◽  
Analysis Method

Zerspanprozesse effizienter machen*/Making machining process more efficent - Recording and analysis of non-productive times in the automotive industry

2015 ◽  
Vol 105 (05) ◽  
pp. 301-306
Author(s):  
T. Bosch ◽  
W. Polley ◽  
S. Schöll ◽  
P. Klemm
Keyword(s):  
Automotive Industry ◽  
Mass Production ◽  
Machining Process ◽  
Sich Eine ◽  
Analysis Method ◽  
Negative Effects ◽  
Advantages And Disadvantages ◽  
Production Processes

Dieser Fachartikel geht auf die negativen Auswirkungen technischer Nebenzeiten für die Effizienz von Produktionsprozessen in der automobilen Großserienproduktion ein. Er zeigt in der Übersicht, welche Methoden sich zur Erfassung technischer Nebenzeiten eignen und welche Vor- und Nachteile sie besitzen. Nur mit diesen Erfassungsmethoden lässt sich eine effektive Minimierung von technischen Nebenzeiten erreichen. Anschließend wird ein dreistufiges Analyseverfahren präsentiert.   This article discusses the negative effects of non-productive times on the efficiency of production processes in automotive mass production. An overview shows which methods are suitable for the recording of non-productive times and their advantages and disadvantages. These recording methods are essential for the effective minimization of non-productive times. Subsequently, an analysis method, which is composed of three steps, is presented.

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