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Thursday, June 4, 2020

Examples of Group Lockout/Tagout Methods

The group lockout/tag out methods described here require each authorized worker to be in control of potentially hazardous energy release during their servicing/maintenance work assignments.  When many energy sources are involved or the work assignment extends over more than 1 shift, an alternative means of control must be used to ensure worker safety.  The following examples are not the only means that can be used for this control; however, the alternative means used must be equal in control to personal locks.

1. AUTHORIZED WORKER LOCKS

Each authorized and responsible worker places an Authorized Worker Danger Tag on each energy-isolating device and removes it upon departure from that assignment (Task Completion).  Each authorized accountable worker verifies or observes the de-energization of the equipment/tool or machinery.

2. LOCK BOXES

A lock and tag are placed on each energy isolation device after de-energization.  The keys are then placed in a lock box.  Each authorized worker assigned to the job attaches his/her authorized worker lock to the lock box.  As a member of a group, each assigned authorized worker verifies that all hazardous energy has been made safe.  The locks/tags cannot be removed or the energy-isolating device turned on until all of the authorized worker locks are removed.

3. MASTER LOCK BOX

After each energy-isolating device is locked/tagged out and the keys placed in the master lock box, a representative from each service/maintenance group place an authorized worker lock on the master lock box.  Then each representative places their key into a satellite lock box to which each authorized worker in the group attaches their authorized worker lock.  As a member of the group, each assigned authorized worker verifies that all hazardous energy has been rendered safe.  After the service/maintenance function of the group is completed and the locks of the authorized workers have been removed, the representative can remove his/her lock from the master lock box.

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