00196962-04-BA-SX12-V2-EN - 第89页
User manual SIPLACE SX1/SX2 2 Operational safety From software version SC 706.1 SP1 Version 10/2014 2.11 Lock out and tag out procedure 89 Release stored energy S tored energy in the compressed air supply or el ectrica…
2 Operational safety User manual SIPLACE SX1/SX2
2.11 Lock out and tag out procedure From software version SC 706.1 SP1 Version 10/2014
88
Lock out the machine.
– Attach a lock whenever possible (e.g. to the motor contactor).
2
Fig. 2.11 - 1 Position of the motor contactor
2
(1) Power supply
(2) Motor contactor
Alternatively: tag out procedure
If a machine can be locked out, it must be. However, there are situations where energy iso-
lating devices cannot 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)
(1)
User manual SIPLACE SX1/SX2 2 Operational safety
From software version SC 706.1 SP1 Version 10/2014 2.11 Lock out and tag out procedure
89
Release 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 machine, wait the specified discharge or pressure unloading time
(see sections 2.8
, page 78, and 2.9, page 81), before the machine can be operated again
without risk.
Verify the lock out.
Testing the lock out can be done simply by pressing the start button.
The following steps must be taken to restore the machine to operation.
Check the area. Authorized employees should remove all of their tools and reinstall all
guards.
Notify all affected employees.
Before removing even one lock or tag, inform all workers in the area that the machine is going
to be restarted.
Remove locks/tags
Each authorized employee must remove his or her own lock. Each authorized employee will
have his or her own lock.
Turn the machine on. Authorized workers should observe the equipment in operation to in-
sure repairs were done correctly.
2.11.3 Testing
Service personnel may test the circuits by activating them briefly without canceling the locking
method. This may be done only when no other work is being performed by any other person on
the equipment being tested.
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.
2.11.4 Responsibility and obligations
– It shall be the responsibility of the maintenance and service personnel to make sure this pro-
cedure is adhered to.
– It shall be the responsibility of the maintenance and service personnel’s immediate supervisor
to instruct his personnel on this procedure.
– 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.
2 Operational safety User manual SIPLACE SX1/SX2
2.11 Lock out and tag out procedure From software version SC 706.1 SP1 Version 10/2014
90
2.11.5 Training
– Staff training
– The safety regulations require training for every individual. Of course, not every employee is
exposed to the same degree of danger or is involved with LO/TO as others are. So extensive
training is not necessary for everyone.
– To determine how much training to provide for each worker, the employees are divided into
three groups. Each group has its own level of training.
– Authorized employees.
– These workers actually install the locks and tags and do the preventive maintenance or ser-
vice work. So they must know the most about controlled energy. First, they must be able to
recognize all energy sources and measure the amount of energy. Authorized employees must
look for energy sources out of the realm of the obvious. These energy sources include elec-
trical, mechanical, hydraulic, pneumatic, chemical, thermal and gravitational. Once these
workers can recognize all energy sources they must be taught how to isolate, control, and
release the energy without any risk.
– Affected employees
– These are workers who operate the machinery or equipment that may be de-energized. Other
employees who may be affected include those who work in an area that contain equipment
that may be locked/tagged out. These employees have to be instructed about the nature of
the energy control program. They must know why lock/tag out is important, what tags and
locks look like and why they must not remove tags or locks.
– All others
– As the name implies, any employee who is not affected or authorized fits into this category.
There employees include office personal, managers, and upper management. Although they
do not have a direct relationship to the machinery being locked or tagged, they have to re-
ceive some training.
– To evaluate the lock/tag out procedure, the safety department will conduct periodic inspec-
tions. As part of the inspection the safety department will document that all facets of the pro-
cedure are followed. The safety department will follow up with formal classroom review or
retraining of the LO/TO procedure.
2.11.6 Review
This procedure will be reviewed and amended as required, and at least once a year.