<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The paper presents an improved methodology of analysing the qualitative importance of components in the functional and reliability structures of the system. We present basic importance measures, i.e. the Birnbaum’s structural measure, the order of the smallest minimal cut-set, the repetition count of an i-th event in the Fault Tree and the streams measure. A subsystem of circulation pumps and fuel heaters in the main engine fuel supply system of a container vessel illustrates the qualitative importance analysis. We constructed a functional model and a Fault Tree which we analysed using qualitative measures. Additionally, we compared the calculated measures and introduced corrected measures as a tool for improving the analysis. We proposed scaled measures and a common measure taking into account the location of the component in the reliability and functional structures. Finally, we proposed an area where the measures could be applied.</p></abstract>

The paper presents an improved methodology of analysing the qualitative importance of components in the functional and reliability structures of the system. We present basic importance measures, i.e. the Birnbaum’s structural measure, the order of the smallest minimal cut-set, the repetition count of an i-th event in the Fault Tree and the streams measure. A subsystem of circulation pumps and fuel heaters in the main engine fuel supply system of a container vessel illustrates the qualitative importance analysis. We constructed a functional model and a Fault Tree which we analysed using qualitative measures. Additionally, we compared the calculated measures and introduced corrected measures as a tool for improving the analysis. We proposed scaled measures and a common measure taking into account the location of the component in the reliability and functional structures. Finally, we proposed an area where the measures could be applied.

Qualitative Importance Measures of Systems Components – A New Approach and Its Applications

Management Systems in Production Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The paper presents an improved methodology of analysing the qualitative importance of components in the functional and reliability structures of the system. We...

Qualitative Importance Measures of Systems Components – A New Approach and Its Applications

Published Online: Mar 15, 2018

Page range: 237 - 246

Received: Apr 01, 2016

Accepted: Aug 01, 2016

DOI: https://doi.org/10.2478/mspe-04-04-2016

Keywords
Fault Tree Analysis, component importance, qualitative analysis, functional structure, reliability structure, marine power plant system

© 2018

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Qualitative Importance Measures of Systems Components – A New Approach and Its Applications

Published Online: Mar 15, 2018

Page range: 237 - 246

Received: Apr 01, 2016

Accepted: Aug 01, 2016

DOI: https://doi.org/10.2478/mspe-04-04-2016

KeywordsFault Tree Analysis, component importance, qualitative analysis, functional structure, reliability structure, marine power plant system

© 2018

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Fault Tree Analysis, component importance, qualitative analysis, functional structure, reliability structure, marine power plant system