80S-20贴片机 - 第38页
1 Operational Safety SIPLACE 80S-20/F4/F4-6/F5 Ser vice Manual 1.6 Lock out and tag out procedure when performing any maintenance work or service work Edition 04/98 1 - 28 Before rem ovin g even one lock or tag, info rm …
SIPLACE 80S-20/F4/F4-6/F5 Service Manual 1 Operational Safety
Edition 04/98 1.6 Lock out and tag out procedure when performing any maintenance work or service work
1 - 27
1.6 Lock out and tag out procedure when performing any
maintenance work or service work
1.6.1 Purpose and scope
Before performing any maintenance work or service work, a procedure of locking and tagging must be fol-
lowed. The procedure, when followed correctly eliminates the possibility of an employee being injured.
1.6.2 Description
Whenever it becomes necessary to isolate, control and release energy, the following procedure is to be fol-
lowed:
1. Notify affected employees.
2. Shut down equipment, using normal stopping procedures, such as
- depressing the stop button
- shutting down the station computer
- switching off the placement system at the main switch or
- opening the toggle switch.
3. Isolate the equipment from all its energy sources such as
– compressed air supply and
– power supply.
4. Lock Out equipment.
– Apply the lock and the lockout whenever possible.
–
The Tag Out alternative:
If a machine can be locked out, it must be. However, there are situations where energy isolating
devices can not 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.
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 dis-
charged as specified in sections 1.3
and 1.4 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.
9. Notify all affected employees.
1 Operational Safety SIPLACE 80S-20/F4/F4-6/F5 Service Manual
1.6 Lock out and tag out procedure when performing any maintenance work or service work Edition 04/98
1 - 28
Before removing even one lock or tag, inform all workers in the area that the machine is going to be
restarted.
10. Remove locks/tags.
Each authorized employee must remove his or her own lock. Each authorized employee will have his or
her own lock.
11. Turn the machine on. Authorized workers should observe the equipment in operation to insure repairs
were done correctly.
1.6.3 Testing
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 per-
formed 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.
1.6.4 Responsibilities
1. It shall be the responsibility of the maintenance and electrical personnel to make sure this procedure 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 Ser-
vice Department, and the various managers and Vice-Presidents to administer the Lock Out / Tag Out
Procedure.
1.6.5 Training
1. Employee training
The safety regulations require training for every individual, of course every employee is not exposed to the
same degree of danger or is involved with LO/TO as others are. So extensive training 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 mea-
sure 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 iso-
SIPLACE 80S-20/F4/F4-6/F5 Service Manual 1 Operational Safety
Edition 04/98 1.6 Lock out and tag out procedure when performing any maintenance work or service work
1 - 29
late, control, and release the energy 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 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.
5. All others.
As the name implies, any employee who is not affected or authorized fits into this category. There employ-
ees include office personal, engineers, 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.
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.
1.6.6 Review
This procedure will be reviewed and amended as required but in no case less frequently than once a year.
1.6.7 Appendix
These procedures represent the minimum lock/tag out requirements. Any additional safeguards needed to
complete work safely can be specified by facilities supervision, the safety officer, the safety committee and the
health department.