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Tailings dam interdependent failures and consequences quantifications are studied in Tailings 2.0 as they are often present even within a single dam cross section. In this case they are called internal inter-dependencies. Inter-dependencies are also known as domino effects.
First we look at the tailings dam interdependent failures. Figures 1, 2 show two classic examples, of interdependencies. These are present in many mines and require careful evaluation.
Pipe spills are rather common. If the pipe is in unfavourable position, unprotected, then, as a function of the erosion potential of the Down Stream face of the dam damages are likely.
An obvious mitigation is pipe patrolling, instrumentation, etc. but experience has shown that the efficiency of those mitigation can be less than hoped for.
Each Risk Assessment requires the definition of consequences for the various scenarios considered for each specific element of the system under consideration. In essence, as pointed out in a prior post Consequences are multidimensional and the final result is the sum of the various dimensional components. Indeed, it is a serious mistake to “select” the worst dimension as the value for the consequence, as it is oftentimes suggested in risk assessments “instructions to prepare FMEA, risk matrix approaches”.
Here is an example list of dimensions we identified for a study with their (also additive) sub-components:
Direct physical losses:
Health and Safety: (none of these include chronic effects –see environmental)
Environmental. If dust and others byproducts, i.e. for example contaminated water are released at code limit values this study assumes there are no chronic effects.
Reputational Damages. These will arise for example from:
Reputational Damages may lead to crises of various types and depth (cost), legal proceedings and consequences and ultimately suspensions of licenses, business interruption, etc. The areas of the environment reportedly more prove to generate these damages are:
we will teach how to do all of this in our course.
We can give corporate courses custom tailored to you needs and covering sectoral (Tailings systems) or corporate spectrum (ERM).