Service Manual HS60 - 第67页
Se rv ice M a nu al HS-6 0 2 Ope rati on al saf et y 03/ 200 3 U S Iss ue 2.8 L ock out and t ag ou t pro cedur e 65 2.8.5 T raining (1) E mployee t raining The safe ty regulations require training for every individual, …
2 Operational safety Service Manual HS-60
2.8 Lock out and tag out procedure 03/2003 US Issue
64
(5) 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 2.5
and 2.6), 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. 2
(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.
(9) 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. 2
(10)Remove locks/tags
Each authorized employee must remove his or her own lock. Each authorized employee will
have his or her own lock. 2
(11)Turn the machine on. Authorized workers should observe the equipment in operation to insure
repairs were done correctly.
2.8.3 Testing
The maintenance or electrical person may test the circuits by energizing the circuit for a short pe-
riod 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
2.8.4 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 supervi-
sor 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.
Service Manual HS-60 2 Operational safety
03/2003 US Issue 2.8 Lock out and tag out procedure
65
2.8.5 Training
(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
training is not necessary for everyone. 2
(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 en-
ergy 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 electrical, 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. 2
(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. 2
(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. 2
(6) To evaluate the lock/tag out procedure, the safety department will conduct periodic inspections.
As part of the inspection the safety department will document that all facets of the procedure
are followed. The safety department will follow up with formal classroom review or retraining of
the LO/TO procedure.
2.8.6 Review
This procedure will be reviewed and amended as required but in no case less frequently than once
a year. 2
2 Operational safety Service Manual HS-60
2.9 ESD guidelines 03/2003 US Issue
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2.9 ESD guidelines
2.9.1 What does ESD mean?
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-
tremely sensitive to overvoltage and thus to electrostatic discharge. 2
The abbreviation for such modules is 'ESD' (Electrostatic Sensitive Device). ’ESD’ is used inter-
nationally. The following symbol on cabinet rating plates, racks or packaging indicates that com-
ponents which are sensitive to electrostatic discharge have been used and thus that the modules
concerned are also touch-sensitive. 2
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 overvoltages do not generally appear to be defective immediately - incorrect
behavior starts after the component or module has been in operation for some time. 2
2.9.2 Important measures to protect against static charging
Æ Most plastics can easily become charged and must therefore be kept away from at-risk com-
ponents.
Æ Always ensure that people, the workplace and packaging are safely earthed when handling
electrostatic sensitive components.
2.9.3 Handling ESD modules
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. 2
Do not touch components unless 2
Æ you are constantly earthed by an ESD wrist strap or
Æ you are wearing ESD shoes or ESD shoe earthing strips on an ESD floor.
2
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
a switch cabinet, a water pipe, etc.). 2
Do not allow modules with chargeable and highly insulating materials to touch one another, e.g.
plastic films, insulating table surfaces or items of clothing made from synthetic fibers. 2