In the last 10 years I have consulted on dozens of induction incidents, eight of which resulted in fatalities. There were commonalities in each one. Just about every Incident Prevention reader will agree that one of the topics that receives the most attention across the power industry – in writing, training and conversation – is personal protective grounding (PPG). Not a week goes by that I don't email or talk to someone about PPG and, in particular, about dealing with induction.
At iP we discuss and share information as well as news about incidents involving induction, and yes, they do occur at an alarming rate. I can't point to any empirical evidence, but my colleagues and I think we, as an industry, are the reason for the confusion over PPG issues. We have been slow to evolve from grounding for the purpose of stabilizing electrical systems and protecting equipment, to grounding for the protection of workers. Even the language of the OSHA standard, to some, seems vague, contradictory or too technical. The ANSI standards establish sound procedures for protective arrangements, but they are not training resources for craft workers. Now, as infrastructure loads and system voltages continue to increase, there are corresponding hazards that were not even discussed just a generation ago. Those hazards are resulting in incidents and, worse, preventable incidents that risk the lives of power-line workers.