Compartmentalization of dike ring 14 : an investigation into different compartmentalization strategies to reduce the systemic risk of flooding

Oost, Johan (2007) Compartmentalization of dike ring 14 : an investigation into different compartmentalization strategies to reduce the systemic risk of flooding.

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Abstract:In Dutch water management, compartmentalization is seen as one of the promising risk reduction strategies. The current flood risk policy for dike ring 14 is based on the exceeding probability of 1/10,000 year¿1. The flood risk policy is thus based on controlling the probability of flooding and not on the potential effects of flooding. This contrasts to the existing policy in controlling so-called `external risks¿, such as the risk of nuclear energy or pollution disasters. External risk policy aims at controlling large-scale disasters. External threats are quantified by group risk and the corresponding risk curve (probability - effect). Dutch policy for external risks aims to control the number of casualties. Other effects, like environmental and economic effects, are not included in the policy. Flooding becomes more and more an external risk, because of the human interventions in the water system. For flood threat, the approach of systemic risk concentrates on the worst case scenario, which means that a system must be able to handle the worst possible attack. This worst case scenario is based on the potential damage and forms the `tail¿ in the risk curve. Reduction of potential damage is the best solution to reduce systemic risk of flooding. Systemic risk has to do with the vulnerability of a whole society, which can be considered as a network of interlinked elements. In this study, the systemic risk is measured by taking the number of affected people, the number of casualties, the direct economic effects and the incoming water as indicators. The aim of this study is: Designing and analyzing different compart-mentalization strategies for the reduction of the flood risk in dike ring 14 in the Netherlands, focusing on the reduction of systemic risk.
Item Type:Essay (Master)
Clients:
Twente Water Centre
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
Link to this item:http://purl.utwente.nl/essays/57842
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