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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Spelling suggestions: "subject:"hydrauliska bromssystem"" "subject:"hydraulisk bromssystem""

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Layer Of Protection Analysis: Pilotstudie, metodutveckling och tillämpning på ett konventionellt hydrauliskt bromssystem / Layer Of Protection Analysis: Pilot study, method development and application on a hydraulic braking system

Rahimi ata, Kooscha-Kevin January 2019 (has links)
Within the safety analysis industry there are a variety of tools used to ensure reliability and security of systems, ranging from mostly qualitative approaches to mostly quantitative. One safety analysis method that lies in between these two is called Layers Of Protection Analysis (LOPA). LOPA is known as a “semi-quantitative” approach that uses a mix of quantitative and qualitative approaches to draw conclusions. In this masters thesis the LOPA approach is demonstrated, in addition to being developed into two alternate LOPA approaches, known as MarkovLOPA and RBDLOPA. These two developed approaches use the concept of Markov chains and Reliability block diagram (RBD) respectively, to extend the applicability of the traditional LOPA methodology. Furthermore, a conventional hydraulic braking system (CHB), which includes ABS/TCS- and ESP functionality was analysed by these three methodologies. The results of the analysis show that in the analysis by LOPA and RBDLOPA 4- and 3 out of 10 scenarios need slight improvements and only 1 scenario for MarkovLOPA. Additionally, the validity of the alternative approaches are analysed by a sensitivity analysis, showing irregularities in the results, leading to the conclusion that further research and development is required prior to industrial applications of the approaches.
LOPA
Layer of protection analysis
conventional hydraulic braking system
PSA
Safety analysis
Markov
Reliability
RBD
LOPA
Säkerhetsanalyser
Markov Kedja
PSA
Layer Of Protection Analysis
Hydrauliskt bromssystem
Tillförlitlighet
RBD
Probability Theory and Statistics
Sannolikhetsteori och statistik
Energy Engineering
Energiteknik
Reliability and Maintenance
Tillförlitlighets- och kvalitetsteknik

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