Module 3.2: Lockout Devices

Lockout Devices are physical devices used to secure energy isolating equipment in a safe or off position, preventing accidental startup during maintenance or servicing. You will examine the different types of lockout devices, how to apply them correctly, and how they contribute to achieving a verified zero energy state. Understanding the proper selection and use of lockout devices is critical for protecting workers from hazardous energy.

• Padlocks and hasps are commonly used to lock switches, valves, or disconnects.

• Valve lockout devices prevent the operation of ball, gate, or plug valves.

• Breaker lockouts secure circuit breakers in the off position.

• Plug and cord lockout devices control portable equipment and tools.

• Lockout devices must only be applied by authorized employees and remain in place until work is safely completed.