ELECTRICAL AND NON-ELECTRICAL LOCKOUT

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1.0 PURPOSE :-

To provide guidelines or locking out equipment or machinery. Electrical and non-electrical

systems are locked out to prevent unexpected energization, start-up or release of stored energy.

The lock-out device is a mechanism that allows the use of a padlock to hold switch, lever or valve

handle in the “off” position. In the market switches and valves are availables with buit-in lock

out device. However, where such arrangement is not available, it should be modified so that

locks can be used.

2.0 GUIDELINES :-

2.1 Turn off equipment or machine at the point of operation.

2.2 Isolate the equipment by operating/disconnecting the switch, valve or any other energising device. Ensure stored energy such as rotating fly-wheels hydraulic systems, air or steam pressure etc. are dissipated.

2.3 Lock operation lever in the “off” position with a locking device. If multilock device is provided, then ensure each person involved to place a separate lock retains his key.

2.4 Follow an established lock-out procedures (see chapter 11.0) for Electrical Lock-Out procedures for required guidance.

2.5 Test machine controls and switches to ensure that they are in “off” position.

2.6 Display warning sign such as : “Danger – Men At Work “.

2.7 On completion of job the Lock-Out Counterfoil is filled in by the supervisor, who will then check the details and then order the employee to whom the lock was assigned to remove the lock.

NOTES :-

1. If equipment or machinery cannot be locked out then the source of energy must be tagged.

2. Mere removal of a fuse may not guarantee energy cut-off.

Some machines use a combination of power sources. Ensure all alternate sources of energy are disconnected and / or dissipated.

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