During a lockout tagout procedure, safety padlocks built particularly for lockout tagout are required. Meaning, these locks must be distinguished from ordinary locks, used solely for lockout reasons, and always identify the person who applied the lock.
Lockout padlocks should ideally be key-retaining to guarantee that the padlock is fastened and locked before the key is withdrawn. A lightweight, non-conductive type that may be easily adjusted for your facility is a good choice for a safety padlock.