A new risk reduction indicator for dam safety management combining efficiency and equity principles

Lombillo, Armando José Serrano; Morales-Torres, Adrián; Escuder‐Bueno, Ignacio; Altarejos‐García, Luis

doi:10.1080/15732479.2016.1245762

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…Cloete et al 33 proposed the rational quantitative optimal approach, which was a robust risk evaluation model to produce a definitive result for the risk mitigation at dam site. Finally, Serrano-Lombillo et al 34 proposed a risk reduction indicator which allows to prioritize the sequences of investments while maintaining an equilibrium between equity and efficiency principles.…”

Section: Introductionmentioning

confidence: 99%

Seismic risk prioritization of a large portfolio of dams: Revisited

Hariri-Ardebili

Nuss²

2018

Advances in Mechanical Engineering

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The development of potential failure mode analysis and risk analysis has greatly improved the state-of-practice for the safety of dams. Risk analysis are well developed in many industries (such as building design, medicine, and insurance) and has greatly advanced in the dams industry over the last 40 years. Engineers and scientists are now deeply investigating and thinking about failure mechanisms associated with operating dams and the probabilities of dam failures. As such, the condition of dams and the risks associated with their operation are now being portrayed better than ever before to dam safety officials and decision-makers. Accurate and adequate risk analyses for a portfolio of dams is extremely important in today’s environment to manage limited budgets and potentially save (or redirect) expensive rehabilitations to identified and critical needs. The goal is to reduce risks of a portfolio of dams in an efficient and cost-effective manner. This article provides a review on risk-based dam terminology and bridging the semi-quantitative and numerical simulation. Moreover, a review of the current state-of-practice for prioritizing a large portfolio of dams subjected to seismic loadings and potential risks is provided. As a potential application, the seismic risk of the 18 dams (which have been experienced relatively large earthquakes) all over the world is evaluated. The semi-quantitative approach is contrasted with finite element model for one of the selected dams.

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Section: Introductionmentioning

confidence: 99%

Seismic risk prioritization of a large portfolio of dams: Revisited

Hariri-Ardebili

Nuss²

2018

Advances in Mechanical Engineering

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“…The authors showed how the principles of equity and efficiency are captured by each of the risk reduction indicators in the prioritisation process of dam safety investments. Based on these findings, the authors proposed indicators such as the Cost per Statistical Failure Prevented (CSFP), Adjusted Cost per Statistical Failure Prevented (ACSFP) and Equity Weighted Adjusted Cost per Statistical Life Saved (EWACSLS), seeking to balance the principles of equity and efficiency and improve the decision-making process [32].…”

Section: Contemporary Period 1995-presentmentioning

confidence: 99%

Dam Safety History and Practice: Is There Room for Improvement?

Contreras,

Escuder-Bueno

2023

Infrastructures

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Dams and reservoirs have always been of interest to human beings, playing a crucial role given the importance of securing water for sanitary use, irrigation, navigation, flood control and energy generation, among others. The main focus of this article is to perform a historical review of dam safety practices. For this purpose, the historical periods are divided into homogeneous periods in terms of dam safety paradigms and, following the narrative of this evolution, the paper considers the fundamentals of the two most important conceptual frameworks applied nowadays: the standard-based approach and the risk-informed one. As a matter of fact, after more than 90 years of experience in the application of dam safety assessment techniques and more than 50 years of recognising and studying the implications of human activity for the environment, today, the industry may have sufficient information and knowledge to take dam safety practice to another stage, being this the core of the discussion that follows the historical review.

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“…Finally, in [42] a new risk reduction indicator is introduced to combine equity and efficiency principles: Equity Weighted Adjusted Cost per Statistical Life Saved (EWACSLS). This indicator is computed with the following formula:…”

Section: Figure 3: Generic Representation Of Variation Curves To Define Prioritization Sequencesmentioning

confidence: 99%

“…With this purpose, the 20 risk reduction measures analyzed are prioritized following the procedure explained in [19], using the EWACSLS indicator [42], combining equity and efficiency principles. A reference implementation sequence of measures is obtained from the risk results, which in turn were obtained from the reference fragility curve in each dam.…”

Section: Case Studymentioning

confidence: 99%