You’re entitled, usually required, to add your personal lock onto this when you start working on a locked out job, that way you can be confident they’ll come looking for the last guy to lock off the job before they can get running again, it may save your fingers/arm/life or job. Usually there’s a permit involved and you should know the conditions of the permit, or have your own permit to join a job.
18+ Next on the hydraulic press channel! (slrpnk.net)