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We read about the recent pit failure at Codelco Ministro Hayes in Chile. We have also read that there will be no impact on the mining operations in this particular case but that is not significant in today’s proposed discussion. This failure is particularly interesting for Riskope as we recently performed a ORE2_Slopes quantitative risk assessment on a large open pit mine in Austral Africa. For a change the client mining company and the mine location are confidential. By the way,…
Read MoreNow that the last eight blogposts (General ORE2 tailings workflow, ORE2 tailings technical explanations, first steps ORE2 tailings workflow , ORE2 tailings deployment steps , ORE2 tailings results, ORE2 tailings RIDM , ORE2 tailings tactical and strategic, ORE2 tailings conclusions) have shown the capabilities and results, let’s see the data required to run ORE2_Tailings quantitative risk assessments compliant with GISTM and ISO 31000. A few words on ORE2_Tailings™ methodology ORE2_Tailings™ is a subset of the “universal” ORE platform specific to Tailings…
Read MoreThis series of eight blogposts is a summary of what a standard ORE2_Tailings™ quantitative risk assessment deployment report includes. Indeed, the ultimate goal of the report is Risk-Informed Decision-Making (RIDM) support for the owner and the EoR. As a matter of fact the methodology is compatible with ISO 31000 and of course ICMM GISTM. The ORE2_Tailings™ deployment uses archival documents supplied by the client for each Tailings Storage Facility (TSF) and finally related dams and written Q/A sessions The report…
Read MoreAs stated earlier ORE2_Tailings™ allows to define in a clear, transparent, and reproducible way which risks are tolerable or intolerable. Among the intolerable risks ORE2_Tailings™ allows to define which risks are tactical and which ones are strategic. We discussed tactical and strategic planning for dam portfolio using ORE2_Tailings™ in https://www.riskope.com/2021/06/30/tactical-and-strategic-planning-for-dam-portfolio-using-ore2_tailings/. In our reports we show that risks of the considered portfolio belong to a three families as follows: tolerable, meaning they are below the risk tolerance of the client. These…
Read MoreWe split this Chapter in two sections: section 10.1 discusses what actions one can take to enhance the knowledge base. These are obvious “simple” procedural mitigations. Thye lead to better understanding of the risks and/or to mitigate them. Section 10.2 shows how one can deploy ORE2_Tailings™ during the mitigation design process. That is in order to support decision-making. The goal is to define rational and sustainable risk mitigation programs. This process has to occur in parallel with the design by…
Read MoreORE2 Tailings deployment steps: 5.1 Failure definition We designed ORE2_Tailings™ to support RIDM for tailings dams portfolios reliability enhancements. One achieves reliability by reducing failure likelihood to a certain level, and risks are tolerable. Thus it is necessary to clearly state what one considers the success of a structure within the portfolio. Indeed, unless we clearly define success, failure remains an ambiguous term. ORE2_Tailings™ considers a dam successful if it: stands as built and does not break allowing for…
Read MoreThe first ORE2_Tailings™ deployment for a given client and selected TSF portfolio is an a priori endeavor insofar it delivers estimates that require calibration and adaptation as new data and new events will occur. In particular, this report will require amendments and updates when, for example, new Space Observation (satellite) or other monitoring results, corrective actions reports, changes in service conditions, new incidents reports and inspections may become available. ORE2 tailings technical explanations: Diagnostic poins ORE2_Tailings™ is a subset of…
Read MoreORE2_Tailings™ is a quantitative risk assessment platform. Riskope designed it specifically for tailings systems (active and inactive). When we deploy ORE2_Tailings™ to a portfolio of dams, possibly over multiple properties, it allows for tactical and strategic planning. Our practice has shown that ORE2_Tailings™ and the general ORE2 tailings workflow, delivers results similar to those of common practice quantitative approaches (Event trees, Failure trees, Bowties). Furthermore ORE2_Tailings™ enables answering specific questions linked to the causality of potential failures, optimization of cost…
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