00198371-01_UM_SWS-EN - 第59页
User manual SIPLACE Wafer System (SWS) 2 Operational safety Edition 04/2018 2.8 Locking the SIPLACE Wafer System and attaching warning labels 59 2.8.4 Responsibility and obligations – It shall be the respons ibility of t…
2 Operational safety User manual SIPLACE Wafer System (SWS)
2.8 Locking the SIPLACE Wafer System and attaching warning labels Edition 04/2018
58
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
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 SIPLACE Wafer System, wait the specified discharge or pressure
unloading time, before the SIPLACE Wafer System can be operated again without risk.
Verify the lock out.
Test the SIPLACE Wafer System lock.
The following steps must be taken to restore the SIPLACE Wafer System 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 on the SIPLACE Wafer System and the SIPLACE CA4 V2. Authorized workers
should observe the equipment in operation to ensure repairs were done correctly.
2.8.3 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.
User manual SIPLACE Wafer System (SWS) 2 Operational safety
Edition 04/2018 2.8 Locking the SIPLACE Wafer System and attaching warning labels
59
2.8.4 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.
– The safety officer is responsible for managing the locking and tagging procedures for the ma-
chine.
2.8.5 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
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 em-
ployees 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 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 cate-
gory. There employees include office personal, 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 Operational safety User manual SIPLACE Wafer System (SWS)
2.9 ESD guidelines Edition 04/2018
60
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.
The abbreviation for such modules is 'ESD' (Electrostatic Sensitive Device). ’ESD’ is used inter-
nationally. The following symbol on cabinet typeplates, racks or packaging indicates that compo-
nents which are sensitive to electrostatic discharge have been used and that the modules
concerned 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 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.
2.9.2 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.