Why is sharing locks discouraged in Lock Out procedures?

Sharing locks is discouraged in Lock Out procedures primarily because it reduces the security of equipment. Each worker should have their own lock to ensure that only authorized personnel can control the equipment being serviced. When locks are shared, there is a risk that someone could inadvertently remove a lock without ensuring that all work is complete, leading to unsafe conditions. This practice compromises the safety of workers who are relying on the lockout system to prevent accidental energization or startup of machinery during maintenance.

In addition to enhancing security, individual locks also provide a clear indication of who is working on a piece of equipment at any given time, which is essential for safe communication among team members. Furthermore, by ensuring each worker uses their own lock, the integrity of the lockout/tagout system is upheld, reinforcing a robust safety culture within the workplace.