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ORE2 tailings conclusions

20-10-2021

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

13-10-2021

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

6-10-2021

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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ORE2 tailings results

29-09-2021

We use archival information to formulate the ORE2_Tailings™ quality note and causality analysis. This includes site visits (when possible and if agreed), photographic historic documentation. Of course information will evolve in time, as new data may become available. Thus, one can use ORE2 tailings results to decide which aspects of the life of a considered structure to study. ORE2_Tailings™ results encompass various dam body’s probabilities. They correspond to the FoS yielded by available engineering analyses and the causality analysis. Here…

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ORE2 tailings deployment steps

22-09-2021

ORE2 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…

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first steps ORE2 tailings workflow

15-09-2021

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

8-09-2021

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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