The supervisor on duty is responsible for the safety, operation and maintenance of this shift. Lead the personnel on duty to accept and execute dispatching orders, and correctly and quickly carry out switching operation and accident treatment; Find and deal with defects in time; Accept and review working tickets, and participate in the acceptance work; Organize equipment maintenance; Check the duty record; Complete safety technical training. The duty of the attendant is: under the leadership of the shift supervisor, do a good job in safety, operation and maintenance. Patrol equipment on time; Perform switching operation; Make all kinds of records on time; Manage safety equipment and instruments; Do a good job in succession; In the absence of the shift supervisor, act as the shift supervisor to carry out necessary business work.