Safety Standards

Interlocking is accepted by safety, insurance, and standards authorities throughout the world as the most reliable and cost effective way of guarding against operator error. The utilization of trapped key interlocks is supported by the following standards and regulations:

United States

ANSI/ASSE Z244.1-2016 The Control of Hazardous Energy Lockout Tagout and Alternative Methods

This standard defines a comprehensive safety program and recognizes trapped-key interlock solutions and switches or captive key systems as an alternative method of controlling hazardous energy and ensures a predetermined sequence of events takes place.

OSHA 29 CFR 1910.333

Sets forth requirements to protect employees working on electric circuits and equipment.

“This section requires workers to use safe work practices, including lockout and tagging procedures….exposed to electrical hazards”

OSHA 29 CFR 1910

Process safeguarding is substantially different than machine safeguarding… process safeguarding is concerned with the safety of machinery and industrial processes during periods of service and maintenance.

ANSI/RIA R15.06

Gives provisions of alternative control of hazardous energy in robotic applications within Industrial Robot and Robot Systems Safety Requirements.