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ORE2 tailings conclusions

This 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…

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ORE2 tailings tactical and strategic

As 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…

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ORE2 tailings RIDM

We 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…

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first steps ORE2 tailings workflow

First steps ORE2 tailings workflow: 2 – ARCHIVAL DOCUMENT SEARCH METHODOLOGY The archival documents delivered by the client to Riskope should cover the TSFs and their dams including: geotechnical studies; geological studies; design reports; geotechnical analyses reports; inspections; correspondence; incidents descriptions; dam break analyses; FIA and GISTM consequences evaluations; emergency plans; and finally monitoring (equipment and measurements as applicable). During the deployment we deliver an analysis of the archival gaps, i.e. a list of documents that are apparently missing or…

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ORE2 tailings technical explanations

The 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…

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Lessons learned in twenty years of hazard, risk and resilience analyses

Writing lessons learned in twenty years of hazard, risk and resilience analyses has been a difficult exercise for various reasons. We compiled  and explain lessons learned in our practice of risk assessment and resilience advice to industries, municipalities and regional governments around the world in our latest book, Convergent Leadership – Divergent Exposures: Climate Change, Resilience, Vulnerabilities, and Ethics. However, the fact that we systematically apply our quantitative convergent approach (ORE, Optimum Risk Estimates) to all sorts of industries and…

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Tailings dam mitigation risk informed decision making

Tailings dam mitigation risk informed decision making closes the discussion we presented in prior blogposts. We now focus on one dam and show how ORE2_Tailings™ supports rational and sensible risk mitigation decision-making as requested by GISTM. The dam case The dam we selected for this example is inactive and is parallel to a valley bottom. An unprotected creek runs at its toe and the bed is considered to be sufficient for the 1/500 return. Beyond that flood, there will be…

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Tactical and strategic planning for dam portfolio using ORE2_Tailings

Tactical and strategic planning for dam portfolio using ORE2_Tailings is the third of a series of blogposts explaining how to use ORE2_Tailings™ results. Indeed it follows: Dam portfolio ORE2_Tailings support for decision makers and ORE2_Tailings supports ICMM global industry standard on tailings management conformance. We use the same figures we have developed in those prior discussions. Summary of the portfolio ORE2_Tailings™ results With respect to probability of failure The portfolio of ten dams is made of two “bad apple” dams…

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