Safety is of paramount importance in electrical operations. According to the provisions of Article 84 of the Safety Regulation, when the operating handle of the circuit breaker (switch) and disconnecting switch (knife gate) may send electricity to the workplace at the moment of closing, it must be hung with the signage of "Prohibition of closing the gate, someone is working!" signage. This signage is used to warn personnel of the dangers in the energized area of the equipment, to remind them of the necessary safety measures, and to ensure that the limitations of the operation are clearly communicated.
Types of signage include warnings, permissions, reminders and prohibitions to suit different equipment and work scenarios. For example, switches and air switches need to be marked with "No Closing, Occupied" to prevent accidental closing, while valves are marked with "No Operation, Occupied" to prevent unauthorized misuse. In the maintenance area, usually hang "work here" signs to indicate the scope of work of the staff.
Electrical operators should strictly adhere to these regulations and put up the correct signage according to the specific type of equipment, wiring and control methods. For example, in the process of repair, when it is necessary to disconnect the load switch of the 4# power meter box and related operations, the sign "no closing, someone is working" will be put up to ensure the safety of repair personnel.
Overall, the installation of these signs is a basic requirement to ensure the safety of electric power operations, which plays a key role in preventing misuse, clarifying the work area and transmitting danger signals. This requirement should be strictly enforced in all aspects of the operation where power may be sent to the workplace.