Author Archive: Derek Viner
Probability estimates with zero Occurrences
On page 100 an error has been made in the cruise ship example used to illustrate the application of Quigley and Revie’s theory for the estimation of probability when there has been no prior experience of Occurrences. The text from…
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Describing Risks
We know that the size of a Risk can be expressed as a relationship between Frequency of adverse Consequences (how many of a given Value per year) and the Consequence Value of them at that Frequency ($ per case), as…
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Defining Events – using the EDM and TSM
I’m grateful to David Skegg for assisting with the writing of this explanatory document. Using the Energy Damage Model (EDM) and the Time Sequence Model (TSM) requires discipline The EDM draws our attention primarily to the fact that damage involves…
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Typographical error on page 148
Part way down this page is number 3 in the list. The text here should say “what ability does the system have to prevent it from failing?”, not “falling”
Theme park tragedies, safety management systems and the role of the regulator
There has been a number of recent theme park Events at the time of writing this. Three examples are: Alton Towers, UK (June 2016) Sixteen people were injured when an occupied carriage of a roller coaster ride collided with a…
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A reference to a non-existent Table on Page 200
The top line of page 200 includes the text … (see Table 7.4) …. This sentence is about “the categorisation of risk control standards as controls on physical and environmental risks factors, controls over the way in which work is…
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DES Access Mechanisms – examples of Table 12.1
Table 12.1 is a listing of possible mechanisms for whole body or part body access into the damaging energy space of an energy source external to the human body. Here are a few examples from my experience (over the years…
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The abuse of Risk Evaluation
In the book I observe “that community groups are especially vulnerable to this misuse of Risk evaluation when considering plans for the annual fete, an outing into the woods or whatever.” I’ve recently seen more evidence of this, perhaps because something drew it…
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A short (and personal) history of the rise (and hoped-for fall) of the risk matrix
In 1979 the first students were admitted into a post graduate course entitled Occupational Hazard Management run by the then Ballarat College of Advanced Education in Ballarat, Victoria, Australia (now Federation University). I had been given the job of designing…
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