College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Document Type

Article

Source Title

Chemical Engineering Transactions

Volume

45

First Page

1339

Last Page

1344

Publication Date

10-1-2015

Abstract

Copyright © 2015, AIDIC Servizi S.r.l.,. Inoperability input-output modeling (IIM) was introduced as a methodology for determining ripple effects propagating through interdependent infrastructure systems as a result of disruptive events such as natural disasters. It is based on the dimensionless metric of inoperability which indicates degree of failure along a scale ranging from 0 to 1. Previous approaches have focused on calibration of interdependencies based on records of economic statistics; IIM has also been used mainly for identifying the vulnerability and criticality of system components. More recent work has demonstrated that the IIM framework can be the basis for optimal allocation of inoperabiltiy in order to minimize damage caused by disruptions. In this work, we propose a P-graph methodology derived from IIM. Interdependency coefficients are integrated within a P-graph model to enable limited capacity of infrastructure following a disruption to be optimally allocated. We demonstrate this methodology using a literature case study.

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Digitial Object Identifier (DOI)

10.3303/CET1545224

Disciplines

Civil and Environmental Engineering

Keywords

Building sites—Risk assessment; Risk assessment

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