Process Lens PL Service Manual_EN - 第10页
1 Introduction 10 Se rv ic e Ma nu al P ro ce ss L en s PL - 0 3/ 20 25 1.2.2 Description Whenever it becomes necessary to isolate, control and release energy, the following procedure is to be followed: ► Notify affected…
1 Introduction
Service Manual Process Lens PL - 03/2025 9
1.2 Lock out and tag out procedure
1.2.1 Purpose and scope
Before performing any preventive maintenance work, conversion work or service work, a procedure of
locking and tagging must be followed and warning signs must be attached if not stated otherwise. If it
is not necessary to switch off the machine, it is explicitly mentioned.
The procedure, when followed, correctly eliminates the possibility of an employee being injured.
NOTICE
Additional safety measures
These procedures represent the minimum lock/tag out requirements for the machine during prevent-
ive maintenance work and service work. Any additional safeguards needed to complete work safely
can be specified by facilities supervision, the safety officer, the safety committee and the health de-
partment.
1 Introduction
10 Service Manual Process Lens PL - 03/2025
1.2.2 Description
Whenever it becomes necessary to isolate, control and release energy, the following procedure is to
be followed:
► Notify affected employees.
► Shut down the equipment. Carry out all normal stopping procedures:
●
Press the Stop button.
●
Switch off the Process Lens PL inspection software.
●
Shut down the control computer.
●
Switch the machine off at the main power switch.
► Isolate the machine from all its energy sources:
●
Disconnect the main power connection.
► Lock out the machine:
●
Attach a lock whenever possible (e.g. to the main power switch).
NOTICE
Alternatively: Tag out procedure
If a machine can be locked out, it must be. However, there are situations where energy isolating
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.
► Release stored energy:
Stored energy in the electrical energy in electrolytic capacitors must be released by appropriate
means.
●
After switching off the machine, wait the specified discharge time, 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
ensure repairs were done correctly.
1.2.3 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 pre-
vent inadvertent operation of the equipment during these periods.
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Service Manual Process Lens PL - 03/2025 11
1.2.4 Responsibility and obligations
●
It shall be the responsibility of the maintenance and service personnel to make sure this proced-
ure 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.
1.2.5 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 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 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 out/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.
These 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.
– To evaluate the lock out/tag out procedure, the safety department will conduct periodic in-
spections. 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 lock out/tag out procedure.
1.2.6 Review
This procedure will be reviewed and amended as required, and at least once a year.