Tag Archives: measurement

When does a reduction in injury numbers become statistically significant?

By Dr. Marloes Nitert and Dr. Sidney Dekker

Those who’ve been around safety (and particularly safety differently) long enough, know that LTI (Lost Time Injuries) is a lousy safety measure. LTI, after all, was once instituted as a productivity measure, not a safety measure. But LTI is actually quite a silly measure too. This blog shows just how silly it gets, and how foolish (or statistically meaningless) any claims about LTI … Continue Reading ››

If your car dashboard was run by a safety performance system

 

I recently pondered that if your car dashboard performance indicators, fuel level, speed, and oil pressure, operated under the mechanisms of a safety performance system, what would be the result?

Over the past two decades, safety resourcing, focus, and intervention have been subjugated by performance management dogma, contending that “safety” can only be present as an expression of its measurement in a zero harm paradigm. Within this paradigm, and my observations across numerous … Continue Reading ››

Turning Apples into Bananas: How Big Data undermines safety and what can be done about it?

An able seaman has been ‘reprimanded’ for leaving the gangway hanging out while the vessel was shifting berth. Root cause – ‘lack of awareness’; corrective action – ‘risk assessment’. A third officer has been served a warning letter for missing out on monthly checks on a fire extinguisher resulting in non-conformance during a safety audit. Root cause – ‘complacency’; corrective action – ‘follow the procedures’. A crew member trips over an obstruction on deck and hurts himself. Root … Continue Reading ››