Results and conclusions
The results reveal that the Swedish electricity transmission system is the most resilient with extremely few interruptions that results in any consequences in terms of disrupted service. Meanwhile, the research found that the least resilient, is the railway transport system.
Second least resilient infrastructure is the electricity distribution system. The rest of the infrastructure systems e.g. water supply, road transport and telecommunication (with regard to mobile communication, broadband services and fixed telephony), lie between these three, all positioned on relatively similar levels.
Examples are provided for the possible fields of usage with respect to the suggested approach and the presented results. It is concluded that the results produced by the approach could be useful in risk management processes and related work within spatial planning or societal safety.
The possibility to measure resilience as a function of time in a unified manner across different types of infrastructures, enables comparisons between the infrastructures. Such information could be used as a basis for decision makers to e.g. evaluate policy and mitigation decisions.
The authors' statements
Further, the authors note that, “critical infrastructures should be either legally obliged or encouraged by official instances to gather interruption data. If possible, one single centralised authority could be in charge of deciding what specific data required of each individual Technical Critical Infrastructure (tCI), given with unified parameters and thresholds.”
The authors state that, “In our thesis we conclude, the most critical infrastructures probably could adapt such a view of functionality with available and measured data, and probably also benefit from doing so.
For businesses, we believe there are probably many companies out there with data available on monitored systems, that could adapt this view of resilience by analysing their interruptions. When done in a unified manner, it can always be compared and contrasted between different systems - as the functionality is unitless.”
For more information, please visit the Lund University ‘Student Papers’ page to see the full publication.