If locks, lockout devices, and multiple lock
adapters are to be effective, they must be used properly
on every occasion where they are needed. Make sure
that you follow the steps of the lockout procedure
1. Before any equipment is locked out, there
should be agreement as to the specific machine or unit to
be taken out of operation. The supervisor should
oversee lockout procedures.
2. Turn off the point-of-operation controls.
(Remember that disconnect switches should never be
pulled while under load because of the possibility of
arcing or even explosion.)
3. See that the main power controls (switch,
breaker, or valve) are turned OFF. Where electrical
voltages are involved, do NOT attempt this yourself but
have it done by a Construction Electrician.
4. After the switch has been opened or the valve
closed, the person who will be doing the work should
snap the locks on the control lever or multiple lock
adapter. At this point, tag the switch, valve, or device
being locked. Tags should indicate the type of work
being done, approximately how long the job will take,
and the name of the supervisor.
5. Try the disconnect or valve to make sure it
cannot be moved to ON.
6. Try the machine controls as a test to ensure the
main controls are really off.
7. As each person completes work, only that
person should remove the lock and supplemental tag.
The person removing the last lock should notify the
supervisor that the work is finished and the equipment is
ready to be placed back in operation.
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