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Module 4: Basic Tool Safety and Working Environment

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Lockout
Lockout and tagout devices protect workers from all possible sources of energy, including water or other liquids.

In a lockout, an energy-isolating device, such as a stop valve, a disconnect switch, or a circuit breaker is placed in the OFF position and locked.

Lockout devices can be used with key or combination locks. Multiple lockout devices are used when more than one person has access to the equipment.

In some instances, as with work involving valves, a chain and lock can be used to hold the valve in place and keep it from being turned.

Tagout
In a tagout, components that allow the flow of water or power equipment and machinery, such as switches or valves, are set in a safe position, and a written warning or tagout device is attached to them.

Click on each button below to know what an effective lockout / tagout program should include:

Inspection
The equipment should be inspected by a trained individual familiar with equipment and associated hazards.

Identification
Lockout devices should be labeled and identified properly.

Purchase
Appropriate locks, tags, and blocks should be purchased.

Procedure
A standard written operating procedure should be in place for all employees follow.

Lockout / Tagout (LOTO)
Lockout / tagout prevents accidents and injuries caused by the following instances:

• Accidental startup

• Electrical shock

• Hazardous material release

• Stored energy release
LOTO should be used when either of the above-mentioned conditions could harm an employee.

OSHA Lockout / Tagout Rule
This rule covers the specific procedure to be followed for the servicing and maintenance of machines and equipment.

1. To properly lockout/ tagout a piece of equipment, you must recognize the power source(s) and isolate each one of them. Electric, hydraulic / pneumatic (air power), fluid / gases, mechanical, and thermal are the main power sources.

2. Install a lockout device at the power source so that equipment powered by that source cannot be operated.

1. A lockout device is a lock, block or chain which physically keeps the switch, valve, or lever in the off position. Placement of a tag on the power source acts as a warning not to restore energy.

Remember: LOTO shall be used when …
• employees are required to remove or bypass a safety device.

• employees are required to place any part of their body in harm’s way.

• employees are exposed to hazardous energy.

LOTO is not a physical restraint.

The tag must state Do Not Operate (or the like).