The main purpose of a lockout tagout lock box is to secure safety padlock keys that are being used in a lockout tagout procedure. Typically, employees have their own personal safety padlocks that they can use to lock out hazardous energy sources.
Each employee involved in the group lockout procedure needs to place their personal safety padlock keys inside the lock box and their padlocks locked to the box cover. This way, the keys will remain inside the LOTO box as long as there is a member of the group who is still actively working on a machine or piece of equipment. Thus, no lockout tagout device will be removed before any other device.