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2 Operational Safety User Manual S IPLACE S-25 H M 2.6 Lock o ut and tag out procedure Software Vers ion SR.503.xx 04/2002 US Edition 94 S to red ene rgy in the com presse d air su pply or ele ctrica l energy in electrol…

User Manual SIPLACE S-25 HM 2 Operational Safety

Software Version SR.503.xx 04/2002 US Edition 2.6 Lock out and tag out procedure

2.6 Lock out and tag out procedure

2.6.1 Purpose and scope

Before performing any maintenance work or service work, a procedure of locking and tagging

must be followed. The procedure, when followed correctly eliminates the possibility of an em-

ployee being injured. 2

NOTE 2

These procedures represent the minimum lock/tag out requirements. Any additional safe-guards

needed to complete work safely can be specified by facilities supervision, the safety officer, the

safety committee and the health department.

2.6.2 Description

Whenever it becomes necessary to isolate, control and release energy, the following procedure is

to be followed 2

1. Notify affected employees.

2. Shut down equipment, using normal stopping procedures, such as

– depressing the stop button

– shutting down the station computer or

– switching off the placement system at the main 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 iso-

lating 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. 2

5. Relieve stored energy

2 Operational Safety User Manual SIPLACE S-25 HM

2.6 Lock out and tag out procedure Software Version SR.503.xx 04/2002 US Edition

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 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.

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.

2.6.3 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 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

User Manual SIPLACE S-25 HM 2 Operational Safety

Software Version SR.503.xx 04/2002 US Edition 2.6 Lock out and tag out procedure

2.6.4 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

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 Service Department, and the various managers and Vice-Presidents to administer the

Lock Out / Tag Out Procedure.

2.6.5 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

energy sources and measure the amount of energy. Authorized employees must look for en-

ergy sources out of the realm of the obvious. These energy sources include electrical, mechan-

ical, 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 en-

ergy 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