Preliminary Quantitative Evaluation of Potential Risk for HCCB TBS Tritium Extraction System Based on Fault Tree Analysis

2015 ◽  
Vol 34 (6) ◽  
pp. 1369-1377 ◽  
Author(s):  
Jiawen Xu ◽  
Dagui Wang ◽  
Jin Wang ◽  
Jiaqun Wang ◽  
Liqin Hu
Keyword(s):  
Quantitative Evaluation ◽  
Potential Risk ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Extraction System ◽  
Tree Analysis ◽  
Tritium Extraction System

scholarly journals FTA analysis of the failure in the horizontal fluidity test

10.30544/69 ◽  
2015 ◽  
Vol 21 (4) ◽  
pp. 229-240 ◽  
Author(s):  
Peter Blaško ◽  
Jozef Petrík
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Molten Metal ◽  
Potential Risk ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Energy Potential ◽  
Tree Analysis ◽  
The Monte Carlo Method ◽  
Fluidity Test

The purpose of the paper was to evaluate the probability of the top event in the fluidity test by Fault Tree Analysis (FTA). One of the important tests used in the foundry practice is the test of the fluidity. Fluidity is the ability of the molten metal to fill the cavity of the molds and create a cast. The AlSi10MgMn (EN 1706) alloy with 5 or 10.54 % of silica was the experimental material. The melted alloy was cast into "horizontal" three-channel mold to test its fluidity. The pouring temperatures were between 605 and 830 °C. In some cases, the experiment was not successful, for a some reasons. This fact led to a waste of time, energy, potential risk of accident, confusion among participants, especially "beginners" founders and became an impulse for the analysis of creation and possible events of fault for the fluidity test using the FTA. It has been found that for the probability of the top event in examined process was disproportionately high (0.29824). The Monte Carlo method was used for the simulation of the effect of decreasing the probability of basic events on the probability of the top event – the fault of the fluidity test.

Fault Tree Analysis for a Modern Communication System

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kamal Hamid ◽  
Nadim Chahine
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Theory And Practice ◽  
Tree Analysis ◽  
Satisfactory Performance ◽  
System Components ◽  
Link Budget ◽  
Simulation Results

Wireless communications became one of the most widespread means for transferring information. Speed and reliability in transferring the piece of information are considered one of the most important requirements in communication systems in general. Moreover, Quality and reliability in any system are considered the most important criterion of the efficiency of this system in doing the task it is designed to do and its ability for satisfactory performance for a certain period of time, Therefore, we need fault tree analysis in these systems in order to determine how to detect an error or defect when happening in communication system and what are the possibilities that make this error happens. This research deals with studying TETRA system components, studying the physical layer in theory and practice, as well as studying fault tree analysis in this system, and later benefit from this study in proposing improvements to the structure of the system, which led to improve gain in Link Budget. A simulation and test have been done using MATLAB, where simulation results have shown that the built fault tree is able to detect the system’s work by 82.4%.

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