Human Factors Engineering

Human Factors is Humans making decisions

Human Factors means HUMANS making decisions- OUR roles as safety professionals is to chart a path to SUCESS IN SAFETY, rather than hoping they avoid failure. Safety is NOT about luck. Safety is the confidence that there is a path to safety success – CULTURE is convincing the workers that the best path is the […]

Investigating events triggered by Human Error

A traditional view of events and accidents is that they are caused by human competence, attention, or attitude shortcomings. It may be under the label of “loss of situation awareness,” “procedural violation,” or “poor management”. A new and different view is that human error is NOT the cause of failure but a SYMPTOM OF FAILURE

ALARP and Railroading

As my year comes to a close on the railroad, I recently has a discussion with a senior manager about ALARP, a new acronym for the RR.  The manager wanted to know more about using the Hierarchy of Controls to reduce risks; more specifically, how we would reduce the SEVERITY of the consequence of an

Error Probabilities (Reason Model)

Assigning probability values to errors is still very much an art form.  Nonetheless, there is sufficient general agreement about the likelihood of errors occurring in various generic tasks to put them into sensible rank order. Their main use is to provide benchmarks for the range of error probabilities over different jobs.Here is a list of

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