Catalogs > Safety Products Catalog > Principles, Standards and Implementation > Prevention of Unexpected Power-Up
Prevention of Unexpected Power-Up
| Prevention of Unexpected Power-Up |  |
Lockout/Tagout | |
Safety Isolation Systems | |
Load Disconnects | |
Trapped Key Systems | |
Alternative Measures to Lockout | |
Prevention of unexpected power-up is covered by many standards. Examples include: ISO14118, EN1037, ISO12100, OSHA 1910.147, ANSI Z244-1, CSA Z460-05, AS 4024.1603, NFPA70[NEC] 430.109(a)(7). These standards have a common theme: the primary method of preventing unexpected power up is to remove the energy from the system and lock the system in the off state. The purpose is to safely allow people to enter a danger zone of a machine.