can prevent casualties: John works in a paper mill where a large machine rolls paper into large spools. The machine is powered by a 480-volt motor and requires regular maintenance to keep it running smoothly. One day, John noticed that one of the drums on the machine was vibrating abnormally, a sign that it needed to be replaced. He reported the problem to his supervisor and they agreed that the rollers needed to be replaced immediately, so they scheduled a maintenance shutdown of the machine. On the day of the maintenance outage, John and his team arrive at the machine and begin preparations for maintenance work. They follow the company's