Reliability Updating for Structures Subject to Localized Corrosion Defects

Authors

Daniel Straub and Michael H. Faber

Abstract

Inspections for localized corrosion defects on steel structures are fundamentally different from other types ofinspections that are normally considered in reliability updating and inspection planning: For localized corro-sion defects, the actual measurement as well as the possibility of missing the largest defect must be accounted for in reliability updating following inspections. Taking basis in a typical engineering model of localized cor-rosion, which predicts the size of the largest defect in a specific area, the problem of reliability updating with the two events is formulated. On this basis, a simple equation is derived that allows the application of Struc-tural Reliability Analysis when calculating the updated reliability after the inspection. The approach is dem-onstrated on a numerical example considering CO2 corrosion in pipelines

Published in/by

Proceedings ICOSSAR'05, 9th International Conference on Structural Safety and Reliability, Rome, June 19-23, 2005.
In: ICOSSAR 2005, G. Augusti, G.I. Schuëller, M. Ciampoli (eds)© 2005 Millpress, Rotterdam, ISBN 90 5966 040 4, pp. 843-850