What must workers do before they begin service or maintenance activities? Before beginning service or maintenance, the following steps must be accomplished in sequence and according to the specific provisions of the employer’s energy-control procedure:
(1) Prepare for shutdown;
(2) Shut down the machine;
(3) Disconnect or isolate the machine from the energy source(s);
(4) Apply the lockout or tagout device(s) to the energy-isolating device(s);
(5) Release, restrain, or otherwise render safe all potential hazardous stored or residual energy. If a possibility exists for reaccumulation of hazardous energy, regularly verify during the service and maintenance that such energy has not reaccumulated to hazardous levels; and
(6) Verify the isolation and deenergization of the machine.