Hi, I’m, among other things, an industrial safety guy.
It’s understandable not to know this, but I’m industry there’s a standard practice of locking out equipment that’s being maintained. Either by physically placing a lock on the power box or by simply putting the plug to the device in your pocket for smaller equipment. And then ensuring that all the energy in the equipment has been exhausted and that the machine cannot be started.
This is the subject of one of many annual trainings for everyone in any given facility.
When changing blades or cleaning equipment, it would be standard that it’s locked out during this process. So wearing gloves and presumably arm guards to protect against laceration when working with blades would be not only acceptable but I imagine expected.