Durability of critical infrastructure
Journal Title: Advances in Environmental Sciences - International Journal of the Bioflux Society - Year 2011, Vol 3, Issue 2
Abstract
The paper deals with those infrastructures by which world society, under the pressure of demographic explosion, self-survives. The main threatening comes not from terrorist attacks, but from the great natural catastrophes and global climate change. It’s not for the first time in history when such measures of self-protection are built up. First objective of this paper is to present the background for durability analysis. Then, with the aid of these mathematical tools the absolute durability of three linear models, typical for critical infrastructures, are successively calculated. In order to enhance the durability of critical infrastructures the solution based on redundancies is chosen. Five types of connection the redundancies for each of the three models are considered. Three topological schemes for connecting the redundancies are adopted: locally, by twining and globally. Absolute values of durability in all fifteen models with redundancies are further calculated. Then, the relative performances of enhanced durability in the same fifteen models, compared with the three original models, considered as references, are analysed. The relative costs of the same fifteen models and in similar topologic conditions are further analysed. By dividing the performance with cost the relative profitableness of each model is obtained. Finally, the three initial models, each reshaped with redundancies in three selective modes, are compared from the perspective of their relative profitableness. The outcomes of this paper are original. They are of practical interests in planning the maintenance programs and checking the plausibility of proposed interventions according to the clause 7.4 of ISO 13822:2001.
Authors and Affiliations
Raluca Pascu, Ramiro Sofronie
Keywords
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