What Is the impact of crane plugging?
David Dolph – Service Supervisor and Crane Operator Trainer
As a trainer of crane operators, I have encountered few crane operators who talk about or admit to plugging cranes. And in recent years, the practice has become less of a crane repair and safety issue, as the bridges and trolleys of many new cranes are equipped with inverter controls. These controls lessen the risk of load swing if an operator were to plug – that is, reverse the direction of a trolley or bridge to create torque that decelerates the trolley.