Lockout-tagout

Lockout-tagout (LOTO) or lock and tag is a safety procedure which is used in industry and research settings to ensure that dangerous machines are properly shut off and not able to be started up again prior to the completion of maintenance or repair work. It requires that hazardous energy sources be "isolated and rendered inoperative" before work is started on the equipment in question. The isolated power sources are then locked and a tag is placed on the lock identifying the worker who has placed it. The worker then holds the key for the lock, ensuring that only he or she can start the machine. This prevents accidental startup of a machine while it is in a hazardous state or while a worker is in direct contact with it.

Usage

LOTO is used to ensure that the machine or the power source of the machine is completely shut off. It is a major aspect of the repair and maintenance of machines in industries. It is also used in many types of businesses and in many different industries for a variety of types of machinery and equipment.

Procedure

The procedure for LOTO is as follows:

1. The machine or power source is identified.
2. The machine is turned off.
3. The machine is disconnected from the power source.
4. The disconnecting device is locked.
5. The lock is tagged with a warning label.

Safety

LOTO is a critical component of workplace safety. It prevents the release of hazardous energy that could cause injury to workers. The U.S. Occupational Safety and Health Administration (OSHA) has regulations regarding the LOTO of equipment to protect workers from the unexpected energization or startup of machinery and equipment, or the release of hazardous energy during service or maintenance activities.

See also

• Occupational Safety and Health Administration
• Industrial safety system
• Machine safety

References

Lockout-tagout Resources
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