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Water Treatment Process And Plants Quantitative Risk Assessments


Riskope’s experience on Water Treatment Process And Plants Quantitative Risk Assessments is growing. Over the last six years we have performed at least 1-2 such studies per year, covering a wide scope of work, mostly for mining clients. Examples of Water Treatment Process And Plants Quantitative Risk Assessments in Mining Review of big picture hazards and risks impinging on a Mining Water Treatment Plant project. These include, but are not limited to: Natural hazard around the operation and transportation corridor;…

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Mine site closure and long-term responsibility


We were recently invited to participate to a public discussion on mine site closure and long-term responsibility. Of course we participated and commented from our risk and reliability point of view. Below we summarize a few points we made. Perpetuity Various voices and now UNEP demand for continued stewardship, management and monitoring and finally information for projects and mining operations during production and closure. Long term decision making cannot be based on censored and biased scenarios, ignore uncertainties. That would…

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Regulations or Risk-based regulations for mine waste management


In these days of increased scrutiny by regulators and public opinion pressure we face a conundrum: Regulations or Risk-based regulations for mine waste management? The 2015 South African regulations reportedly specify design standards for mining waste disposal facilities based on the character of waste. As discussed in our recent blog post on mine waste classification systems waste characterization is a measure of the waste hazard and not of the risks generated by those wastes. Regulations based on hazards are ubiquitous…

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Common Cause Failures impact Risks


Today, we look at what happens when Common Cause Failures impact Risks. Common Cause Failures impact Risks defined Common cause failures (CCFs) are almost “simultaneous” failures of specific system’s elements resulting from single shared causes or coupling factor (or mechanisms). By applying the definition above we can immediately see there are two families of CCF: The coupled CCF, i.e. interdependent failures where one element failure drives the failure of another element and The uncoupled CCF where Physical or environment stresses…

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Landslides risk assessment


Natural and man-made slopes portfolio require Landslides risk assessment in order to ensure sustainable management. Slopes present hazardous geo-morphological processes such as landslides which can occur discretely (some deformation, cracking followed by a large movement) or “continuously” (deformations ranging between a few millimeters and several centimeters per years with occasional accelerations followed by a return to “average velocity”). Shall we manage hazards or risks? Any slope, anywhere in the world, has a probability of occurrence (of “first” failure). Continuously sliding…

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proposal for a mine waste classification system


The proposal for a mine waste classification system recently described by Ljiljana Josic and Lawrence Devon Smith fills a blatant (and often costly) gap in the industry standards. Factors like management, legislation and permitting of mining wastes have become driving forces in decisions. NI43-101 and other public disclosure requirements will further boost all related issues. The need for unified and univocal glossary and unequivocal definitions is of course of primary importance. The same occurs in risk management. A proposal for…

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Open pit walls catastrophic failure probabilities for a captive insurance


Four or five years ago an insurance company asked us to estimate open pit walls catastrophic failure probabilities for a captive insurance. A that time of our study recent publications of pit wall failures databases we not yet available. Like we did for tailings dams failures in 2013 we used approximate data we found, i.e. a sample portfolio of forty open pits records and a table from a 1996 Swedish with 24 open pit failures research. Open pit walls catastrophic…

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