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User Manual HS-50 2 Operational Safety Software Version S R.501.xx 12/99 Issue US 2.6 Lock out and tag out pro cedure 87 t I I t 2 Fig. 2.6 - 1 Locking the motor contactor (1) Turn the oper ating lev er (1) counter -cloc…
2 Operational Safety User Manual HS-50
2.6 Lock out and tag out procedure Software Version SR.501.xx 12/99 Issue US
86
t IIt
2.6 Lock out and tag out procedure
2.6.1 Purpose and scope
Before performing any maintenance work or service work, a procedure of locking and tagging
must be followed. The procedure, when followed correctly eliminates the possibility of an em-
ployee being injured. 2
NOTE 2
These procedures represent the minimum lock/tag out requirements. Any additional safe-guards
needed to complete work safely can be specified by facilities supervision, the safety officer, the
safety committee and the health department.
2
2.6.2 Description
Whenever it becomes necessary to isolate, control and release energy, the following procedure is
to be followed 2
(1) Notify affected employees.
(2) Shut down equipment, using normal stopping procedures, such as
– depressing the stop button
– shutting down the station computer or
– switching off the placement system at the main switch.
(3) Isolate the equipment from all its energy sources such as
– compressed air supply and
– power supply.
(4) Lock Out equipment.
– Apply the lock and the lockout whenever possible.
2
User Manual HS-50 2 Operational Safety
Software Version SR.501.xx 12/99 Issue US 2.6 Lock out and tag out procedure
87
t IIt
2
Fig. 2.6 - 1 Locking the motor contactor
(1) Turn the operating lever (1) counter-clockwise.
(2) Use the screwdriver to push the locking lug (2) out of the operating lever (1).
(3) Secure the operating lever with a padlock (3).
2
– The Tag Out alternative:
If a machine can be locked out, it must be. However, there are situations where energy iso-
lating devices can not accommodate locks. In these cases, the energy isolating devices must
be tagged to warn employees that the machine is de-energized for servicing. The tag must be
securely fastened, it must be placed in a position visible to all and it may only be removed by
the person who attached it. 2
2 Operational Safety User Manual HS-50
2.6 Lock out and tag out procedure Software Version SR.501.xx 12/99 Issue US
88
t IIt
(4) Relieve stored energy
Stored energy in the compressed air supply or electrical energy in electrolytic capacitors must
be released by appropriate means. 2
– After switching off the placement machine wait until the voltages and the compressed air
have discharged (see Sections 2.3 and 2.4) to be able work without any risk.
(5) Verify the lock out.
Testing the lock out can be done simply by pressing the start button. 2
(6) The following steps must be taken to restore the machine to operation.
(7) Check the area, authorized employees should remove all of their tools and reinstall all guards.
Notify all affected employees. 2
Before removing even one lock or tag, inform all workers in the area that the machine is going
to be restarted. 2
(8) Remove locks/tags
Each authorized employee must remove his or her own lock. Each authorized employee will
have his or her own lock. 2
(9) Turn the machine on. Authorized workers should observe the equipment in operation to insure
repairs were done correctly.
2.6.3 Testing
The maintenance or electrical person may test the circuits by energizing the circuit for a short
period of time without voiding the lock out procedure provided. This may be done only when no
other work is being performed by any other person on the equipment being tested. 2
It is extremely important that all remote start switches be tagged with the “Do Not Operate” tag to
prevent inadvertent operation of the equipment during these periods. 2
2.6.4 Responsibilities
(1) It shall be the responsibility of the maintenance and electrical personnel to make sure this pro-
cedure is adhered to.
(2) It shall be the responsibility of the maintenance and electrical personnel’s immediate
supervisor to instruct his personnel on this procedure.
(3) It shall be the responsibility of the Safety Officer with assistance from the Safety Committee,
Health Service Department, and the various managers and Vice-Presidents to administer the
Lock Out / Tag Out Procedure.