Mandatory Lockout/tagout nine steps
The first step of preparation
The person in charge of the operation should organize all the operation personnel to conduct a work risk analysis and review the dangerous energy control procedures before the operation, determine the equipment that should be locked for the operation, handle the corresponding approval procedures for power outage or gas (steam) outage and other operations, and prepare the locks and lock boxes.
Step Two: Inform/Approve
The person in charge of the operation shall bring the operation work order, the approval receipts for power outage or gas (steam) outage and other operations, as well as the hazardous energy control program to the central control room. The central control person in charge shall make relevant records and inform all those who may be affected during the operation.

The third step is to turn off
Before the machine stops, the operator should empty the materials, liquids, gases, etc. in the equipment. The central control operator should shut down the equipment one by one normally in accordance with the equipment operation procedures

Step 4 Isolation
The isolation operator shall implement isolation by using energy isolation devices (such as circuit breaker switches, visual isolation switches, drop-out fuses, valves, blind plates, etc.) in accordance with the dangerous energy control procedures of the job tasks. The person in charge of the operation shall check and confirm that the isolation is correct.

Step 5: Lock
It must be attached to the energy isolation device. For energy isolation devices that can be locked, it is prohibited to use tags instead of locking. In cases where locking is truly impossible, after obtaining a work permit, they should be attached to the isolation device as much as possible. Locks should meet the requirements (insulation and durability, standardization, sturdiness, recognisability, uniqueness). Locks must have color and shape codes, as well as appropriate label information for easy identification