Analyzing Impact on Critical Infrastructure Using Input-Output Interdependency Model: Case Studies

Abstract

The economic input-output interdependency model is a quick decision tool for stakeholders of critical infrastructure to understand the economic impact of a disruptive event. To demonstrate its applications, two real case studies (Pulau Bukom refinery fire in Singapore in 2011 and Tohoku earthquake in Japan in 2011) are presented in the paper. The paper will describe how the model is used to compute the effects on other economic sectors. It also seeks to compare and analyze the computed cascading effects. Understanding the severity and extent of the disruptive event is very important and the input-output interdependency model serves as a quick and cost-effective decision deployment tool for use by relevant stakeholders.