OSHA Definition
Per OSHA 1910.147(b), a lockout device is a device that utilizes a positive means such as a lock, either key or combination type, to hold an energy isolating device in the safe position and prevent the energizing of a machine or equipment. Included are blank flanges and bolted slip blinds.
Device Requirements
Per 1910.147(c)(5), lockout devices must be:
- Singularly identified and used only for energy control
- Durable enough to withstand the environment for the maximum expected exposure period
- Standardized within the facility by color, shape, or size
- Substantial enough to prevent removal without excessive force
- Capable of identifying the employee who applied the device
Common Lockout Devices
Padlocks (keyed or combination), circuit breaker lockouts, valve lockouts, plug lockouts, gate valve lockouts, ball valve lockouts, pneumatic lockouts, and multi-lock hasps.
