Archives

Archive

Tailings dams failures insurance perspective

It is interesting to read about Tailings dams failures insurance perspective. Riskope helped solving miners’ insurance denial issues for the last 15 years. Riskope also recognizes the issue is becoming much wider than mining due, for example to climate change impacting residential and private parties. Tailings dams Recent papers from Willis Towers Watson  quote tailings dams failures frequency at two failure per year. In a 2013 paper (Oboni, C., Oboni F., Factual and Foreseeable Reliability of Tailings Dams and Nuclear Reactors -a…

Read More

Quantitative Convergent ERM to Solve Real Life Problem

Riskope presented at Infonex (https://infonex.com/ ) Quantitative Convergent ERM to Solve Real Life Problem. The conference was carried out on Zoom and the talks were, of course recorded. What is ERM?  Enterprise risk management (ERM) is a plan-based decision-making support. It allows its users to enhance their tactical and strategic planning and therefore to increase competitiveness. Indeed, it aims to identify, assess, and prepare a project, corporation to cope with threats and hazards. Threats and hazards can occur with different…

Read More

Tailings dams knowledge base creation

Tailings dams knowledge base creation is about how to acquire the information needed to perform well documented risk assessments. Of course, there are many possible ways to create the necessary knowledge-base for a risk assessment that is compliant with the new Global standard. Today we will discuss a few possible ways to do so at a high-level.At Riskope we passionately believe that only a blending of these approaches is capable of bringing the answers needed for high quality risk assessments…

Read More

SLM and the Probability of failure of a tailings dam

SLM and the probability of failure of a tailings dam goes back 35 years.  A paper entitled “Probability and Risk of Slope Failure” (Silva et al., 2008) proposed using quantification of expert judgement.  That is a subjective/semi-empirical probability evaluation as a practical alternative for determining probability of slope failure. We call this approach SLM, using the initials of the authors. SLM culminates with semi-empirical relationships between Factor of Safety -FoS- and probability of failure -pf-. That relationship allows to estimate…

Read More

Dam risks informational gap

Dam risks informational gap impacts to a certain extent all dams: hydro, tailings and finally, toxic dumps. There are thousands of active dams around the world significantly different because of: age, function, materials, construction style and care, maintenance care and finally “behavior” or performance. Oroville dam was one of those, like other recent mining catastrophes and the Michigan failures. What do all dams have in common? Dams are all exposed to hazards, e.g. natural, man-made such as excess of confidence,…

Read More

Comparison of ORE2_Tailings estimated dam failure probabilities

The comparison of ORE2_Tailings estimated dam failure probabilities is an important element of Riskope continued commitment to test the validity of the approach. Quantitative risk assessment in tailings One can perform a Quantitative Risk Assessments (QRA) using various methods. Indeed, for tailings dam risks, they all consist in evaluating the: probability of failure of the dam generated by various pertinent hazards, potential consequences of a dam system collapse (failure) and finally the risk. The technical and mathematical tools for performing…

Read More

Dam portfolio risks—a few definitions

Dam portfolio risks—a few definitions aims to bring clarity on terms definitions that oftentimes remain shrouded in mystery. Risk Framework Risk analysis frameworks provide a methodological basis for establishing a transparent and defensible evaluation of the risk generated by a given dam and/or portfolio of dams. They can be qualitative, semi-quantitative or fully quantitative. The framework is essentially a repeatable evaluation scheme which may rely on: quantification of expert judgment, subjective probabilities, empirical/statistical observations or probabilistic models (Stamatelatos et al.…

Read More

Global Industry Standard on Tailings Management

On Wednesday August 5th ICMM, UNEP and PRI launched the Global Industry Standard on Tailings Management. In this blogpost we offer some comments on the Global Industry Standard on Tailings Management. We salute this initiative that we have supported already at draft level. Indeed, at that time we wrote our comments and notes via email and online portal. That was following the public Consultation invitation which gathered a total of 629 responses. The consultation report We found the Global Tailings…

Read More

Hosted and powered by WR London.