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2 Operational Safety User Manual HS-50 2.6 Lock out and tag out procedure when performing any maintenance work or service work Software-Version 5.01 Edition 01/99 82 7 UDLQLQJ 1. Emplo yee trai ning The safety regu…
User Manual HS-50 2 Operational Safety
Software-Version 5.01Edition 01/99 2.6 Lock out and tag out procedure when performing any maintenance work or service work
81
5. Relieve stored energy
Stored energy in the compressed air supply or electrical energy in electrolytic capacitors must
be released by appropriate means.
– After switching off the placement machine wait until the voltages and the compressed air
have discharged to be able work without any risk.
6. Verify the lock out.
Testing the lock out can be done simply by pressing the start button.
7. The following steps must be taken to restore the machine to operation.
8. 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.
9. Remove locks/tags
Each authorized employee must remove his or her own lock. Each authorized employee will
have his or her own lock.
10.Turn the machine on. Authorized workers should observe the equipment in operation to insure
repairs were done correctly.
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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.
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.
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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.
2 Operational Safety User Manual HS-50
2.6 Lock out and tag out procedure when performing any maintenance work or service work Software-Version 5.01 Edition 01/99
82
7UDLQLQJ
1. Employee training
The safety regulations require training for every individual, of course every employee is not ex-
posed to the same degree of danger or is involved with LO/TO as others are. So extensive trai-
ning is not necessary for everyone.
2. 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.
3. Authorized employees
These workers actually install the locks and tags and do the maintenance or service 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 en-
ergy sources out of the realm of the obvious. These energy sources include electrical, mecha-
nical, 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 en-
ergy without any risk.
4. 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 en-
ergy 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.
5. All others
As the name implies, any employee who is not affected or authorized fits into this category.
There employees include office personal, engineers, managers, and upper management. Al-
though they do not have a direct relationship to the machinery being locked or tagged, they
have to receive some training.
6. 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 re-
training of the LO/TO procedure.
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This procedure will be reviewed and amended as required but in no case less frequently than once
a year.
User Manual HS-50 2 Operational Safety
Software-Version 5.01Edition 01/99 2.7 ESD guidelines
83
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Almost all of the modules in use today are equipped with highly integrated MOS blocks and com-
ponents. The manufacturing techniques used mean that these electronic components are ex-tre-
mely sensitive to overvoltage and thus to electrostatic discharge.
The abbreviation for such modules is ’ESD’(Electrostatic Sensitive Device). This is used interna-
tionally, although the German abbreviation ’EGB’ may also be seen.
The following symbol on cabinet rating plates, racks or packaging indicates that components
which are sensitive to electrostatic discharge have been used and thus that the modules concer-
ned are also touch-sensitive.
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Å Most plastics can easily become charged and must therefore be kept away from at-risk com-
ponents.
Å Always ensure that people, the workplace and packaging are safely earthed when handling
electrostatic sensitive components.
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Do not touch electronic modules unless it is absolutely essential to do so in order to carry out other
work. If it is necessary, make sure that you do not touch the pins or printed conductors when you
pick up flat modules.
Do not touch components unless
Å you are constantly earthed by an ESD wrist strap or
Å you are wearing ESD shoes or ESD shoe earthing strips on an ESD floor.
Always discharge yourself before you touch an electronic module. To do this, simply touch a con-
ductive and earthed object immediately before you touch the module (such as unpainted parts of
ESDs can be destroyed by voltages and power levels that are far below the level
that can be perceived by humans. Such voltages occur if a person touches a com-
ponent or module without earthing themselves. Components that are exposed to
such overvolt-ages do not generally appear to be defective immediately - incorrect
behavior starts
after the component or module has been in operation for some time.