For changed or new parts of the railway system a risk analysis has to be performed. In the past, usually quantitative risk analysis methods were used which are difficult due to not enough data and often time consuming. A possibility for more effective risk analyses is the use of semi-quantitative methods, e.g. risk graphs. Semi-quantitative methods are designed based on a comprehensible mathematical model. In semi-quantitative methods, several parameters are used for the description of risk. For each parameter a scale with discrete classes is constructed from which the suitable parameter classes for the assessment is chosen. From the combination of the selected parameter classes the requirement class and/or the quantitative safety requirement will result. The presented paper shows the main ideas for a lifecycle based construction process of a semi-quantitative risk assessment method. An example of a newly constructed risk graph with the reasoning of its construction process was given. The developed guidelines should now be tested and further developed by application. More construction processes of different risk assessment methods ideally in different industries should be documented. The experiences made with the guidelines during the construction process of different assessment methods can be used to define the guidelines.


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    Titel :

    Designing a semi-quantitative risk graph


    Weitere Titelangaben:

    Entwurf eines halb-quantitativen Risiko-Graphens


    Beteiligte:
    Milius, Birgit (Autor:in)


    Erscheinungsdatum :

    2011


    Format / Umfang :

    9 Seiten, 3 Bilder, 8 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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