480sparky said:Some equipment uses more than just electricity. There's steam, water (under pressure), hazardous gases or liquids, kinetic (such as a suspended weight or compressed/expended spring), etc.
Typically, you're in an industrial environment (such as a factory) when you get into this type of stuff, and they should have a LOTO kit you can use with your lock. But sometimes you run up across something out of the blue and you need to have your own LOTO pieces.
I have my own LOTO stuff and use them all the time, but I'm not a plumber,
or a steam fitter, or the installer of hazardous gases etc., if such things need
valves shut off, believe me, It won't be me shutting them down and locking them out.