Safety
Electrical Lockout Procedures
2
2-13
HDSdoc072619
Safety
PURPOSE
This procedure establishes the minimum requirements for the lockout of energy isolating
devices whenever maintenance or servicing is done on machines or equipment. It shall
be used to ensure that the machine or equipment is stopped, isolated from all potentially
hazardous energy sources and locked out before personnel perform any servicing or
maintenance where the unexpected enervation or start-up of the machine or equipment
or release of stored energy could cause injury.
COMPLIANCE WITH THIS PROGRAM
All personnel are required to comply with the restrictions and limitations imposed upon
them during the use of lockout. The authorized personnel are required to perform the
lockout in accordance with this procedure. All operators, upon observing a machine or
piece of equipment which is locked out to perform servicing or maintenance shall not
attempt to start, energize, or use that machine or equipment.
SEQUENCE OF LOCKOUT
1.
Notify all affected personnel that servicing or maintenance is required on a machine or
equipment and that the machine or equipment must be shut down and locked out to per-
form the servicing or maintenance.
2.
The authorized employee shall refer to the company procedure to identify the type and
magnitude of the energy that the machine or equipment utilizes, shall understand the haz-
ards of the energy, and shall know the methods to control the energy.
3.
If the machine or equipment is operating, shut it down by the normal stopping procedure
(depress the stop button, open switch, close valve, etc.).
4.
De-activate the energy isolating device(s) so that the machine or equipment is isolated
from the energy source(s).
5.
Lock out the energy isolating device(s) with assigned individual lock(s).
6.
Stored or residual energy (such as that in capacitors, springs, elevated machine mem-
bers, rotating flywheels, hydraulic systems, and air, gas, steam, or water pressure, etc.)
must be dissipated or restrained by methods such as grounding, repositioning, blocking,
bleeding down, etc.
7.
Ensure that the equipment is disconnected from the energy source(s) by first checking
that no personnel are exposed, then verify the isolation of the equipment by operating the
push button or other normal operating control(s) or by testing to make certain the equip-
ment will not operate.