Step by step
7List every energy source
A qualified person lists power, control circuits, gas, water, pressure, stored charge, and backup sources like generators, solar, or batteries.
Write down · NoteDo not count a stop as a shutoff
Emergency stops, wall switches, timers, tripped breakers, and tags alone do not show anything is isolated.
Write down · NoteLock out each source
A qualified person isolates each source upstream, valves included. Each worker adds a personal lock and records it.
Write down · NoteRelease stored energy
A qualified person bleeds pressure and discharges stored charge, then watches it fall. Closed valves can still hold pressure behind them.
Write down · ReadingCheck at the work point
A qualified person proves the tester on a known live source, tests at the work point, then proves it again.
Write down · ReadingRecheck after any absence
Anyone who left the area tests again on return. A new or unlisted source stops the work until it is found.
Write down · DecisionRestore in order
A qualified person counts tools and jumpers, clears people, and restores safeties. Only the person who placed a lock removes it.
Write down · Note
A finished run leaves the source list, lock points with names, readings at the work point, and the restore steps.
General guidance for a qualified person, not a finding about any home. The person on site decides.