Lock label requirements
First, it should be durable, and locks and signs should be able to withstand the environment used; Secondly, the lock and sign should be strong enough to ensure that it cannot be removed without external forces; Also identifiable, the tag should be attached to the lock, stating the name of the owner and the work being done; Finally, there should be uniqueness. Each lock should be equipped with only one key. Keys should not be copied and others should not remove the lock without permission.
2) Lockout Tagout requirements
For equipment distributed in the same electrical room, if several devices execute the Lockout Tagout program at the same time, an electrical equipment Lockout Tagout worksheet can be filled in. The equipment code and name can be attached with another page of equipment table requiring Lockout Tagout. If the Lockout Tagout procedure is required for equipment in different electrical rooms, a Lockout Tagout worksheet for electrical equipment is required for each electrical room. Each program sheet must be signed by a debugger and an electrical unlocking operator. Relocking and unlocking after completing the test also requires a signature. This work order shall be stored in the electrical room after the program of unlocking and unlocking is performed, and the work shall be completed in the electrical room to confirm the lock and unlocking.
3) Electrical control requirements
When the transformer is not in operation, the door of transformer room and MCC room should be closed and locked. Before the transformer is sent, the main circuit breaker of each inlet cabinet and feeder cabinet in MCC room shall be locked in the off position, and the circuit breaker of all motors shall be in the test position or opening position. Only after the transformer is given the power supply license, can the transformer be sent.
Before the linkage test, you should have the work permit, sign on the register of the power distribution room, and technicians of the power distribution room, field and central control room can only open the lock of the motor to be used, and then start the motor. After the test, set the motor control loop switch to the test position and lock it. During the trial run, when maintaining or adjusting electrical appliances or equipment, the work permit shall be submitted, and the operator shall break the control loop of the operating box beside the machine and lock the operating box beside the machine. After the maintenance or adjustment, the operator shall unlock the box. During the no-load test, the following loops shall be locked and controlled before power is sent to the incoming line cabinet: the main loop of the incoming line cabinet and the feeder cabinet. Power supply procedure: sign the power supply permit, sign the register in the power distribution room, remove the padlock, close the circuit breaker in the incoming and feeder cabinets.