The Risk Management Tool Box Blog

Another Failure with LOTO

Graham Marshall - Sunday, April 22, 2012

I'm following up on yesterday's post with another example of a common type of failure with "lock-out, tag-out" (LOTO).

This example highlights the risk in using single locks and keys for a whole work party, and then passing the key to a third party who is able to remove the lock and re-energize the system being worked on.

This is a most dangerous way to organize LOTO.

A better alternative is to have a single lock (and key) and to place the key inside a group lock box.  Each individual worker involved in the isolation activity can then place their own individual lock on the group box - ensuring that no one can remove the LOTO without their knowledge or approval.

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