All pipes should be physically disconnected or isolation blanks bolted in place. Closing valves is not sufficient. A barrier is present to prevent and liquids or free flowing solids from entering the ...

A space is confined if it has a limited or restricted entry or exit point. "Confined spaces include, but are not limited to, tanks, vessels, silos, storage bins, hoppers, vaults, pits, manholes ...

When work takes you or employees inside confined spaces where energy-related hazards exist, the entry plan must include ... where proper shut down and isolation of mechanical equipment ...