Volume 36, N. 1

January-April 2013

Application of Risk Analysis Methods on Tailings Dams

Article

Volume 36, N. 1, January-April 2013 | PDF (32 downloads)

Abstract

One of the procedures adopted in a Safety Management System is the use of Risk Analysis for which analytical, iterative, descriptive and qualitative methods, such as the FMEA “Failure Modes and Effects Analysis”, have been applied in order to identify and analyse potential failures from a given failure mode, its causes and consequences, as well as the means of detection and prevention of failure modes and mitigation of their effects. In Brazil the FMEA method has been used to evaluate the safe conditions of tailings dams. On the other hand a specific tool for the Risk Analysis of dams, the LCI “Analysis by Diagrams Location, Cause and Failure Indicators” semi-quantitative method, has been developed and in the United Kingdom under the name of “Risk Management for UK Reservoirs” and applied in Europe but not for tailings dams. Recently the LCI MOD-REJ version – an adaptation of the LCI method – has been proposed and applied to one Brazilian tailings dam to explicit deal with the Risk Analysis of this type of structure. Considering the promising results of the former application, the aim of this paper is to evaluate the LCI MOD-REJ version applicability and efficiency by comparing the results of its and the FMEA method applications to two Brazilian tailings dams.

Keywords: tailings dams, risk analysis, LCI, LCI MOD-REJ, FMEA, safety management,


Submitted on May 29, 2012.
Final Acceptance on March 27, 2013.
Discussion open until August 30, 2013.
DOI: 10.28927/SR.361097