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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: T ag out proced ure If a machine can be locked out, it mus…

User manual SIPLACE Wafer System (SWS) 2 Operational safety

Edition 04/2018 2.8 Locking the SIPLACE Wafer System and attaching warning labels

2.8 Locking the SIPLACE Wafer System and attaching

warning labels

2.8.1 Purpose and scope

Before performing any preventive maintenance work or service work on the SIPLACE Wafer Sys-

tem, a procedure of locking and tagging must be followed. The procedure, when followed correctly

eliminates the possibility of an employee being injured.

2.8.2 Description

Whenever it becomes necessary to isolate, control and release energy for the SIPLACE Wafer

System, the following procedure must be followed

 Notify affected employees.

 Switch off the SIPLACE Wafer System and any auxiliary devices. Carry out all normal stop-

ping procedures:

– Shut down the SIPLACE Wafer System.

– Switch off the SIPLACE Wafer System at the main switch.

 Disconnect the SIPLACE Wafer System from all its energy sources:

– Switch off the compressed air at the SIPLACE CA4 V2, thereby interrupting the supply

of compressed air to the SIPLACE Wafer System.

– Interrupt the power supply to the SIPLACE Wafer System.

 Lock out the machine.

– Attach a lock whenever possible (e.g. to the main switch).

PLEASE NOTE

Minimum requirements

These procedures represent the minimum lock/tag out requirements for the preventive

maintenance or 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 department.

2 Operational safety User manual SIPLACE Wafer System (SWS)

2.8 Locking the SIPLACE Wafer System and attaching warning labels Edition 04/2018

 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

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.