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2 Operational safety User Manual SIPLACE CS 2.9 Lock o ut and tag out procedur e Software Version SR. 408.xx03/2006 US Edition 58 – T o ev aluate the lock /tag out procedu re, the s afety departm ent will c onduct p erio…
User Manual SIPLACE CS 2 Operational safety
Software Version SR.408.xx 03/2006 US Edition 2.9 Lock out and tag out procedure
57
2.9.4 Responsibilities
It shall be the responsibility of the maintenance and electrical personnel to make sure this proce-
dure is adhered to.
It shall be the responsibility of the maintenance and electrical 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.
2.9.5 Training
– 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 Lock Out/Tag Out 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 service
work. So they must know the most about controlled energy. First, they must be able to recog-
nize 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 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.
– 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.
– 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 receive
some training.
2 Operational safety User Manual SIPLACE CS
2.9 Lock out and tag out procedure Software Version SR.408.xx03/2006 US Edition
58
– 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.
2.9.6 Review
This procedure will be reviewed and amended as required, and at least once a year.
User Manual SIPLACE CS 2 Operational safety
Software Version SR.408.xx 03/2006 US Edition 2.10 ESD guidelines
59
2.10 ESD guidelines
2.10.1 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
extremely sensitive to overvoltage and thus to electrostatic discharge.
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 components
which are sensitive to electrostatic discharge have been used and thus that the modules con-
cerned are also touch-sensitive.
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 component 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.
2.10.2 Important measures to protect against static charging
– Most plastics can easily become charged and must therefore be kept away from at-risk com-
ponents.
– Always ensure that people, the workplace and packaging are safely earthed when handling
electrostatic sensitive components.
2.10.3 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.
Do not touch components unless
– you are constantly earthed by an ESD wrist strap or
– 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
a switch cabinet, a water pipe, etc.).