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The standards for the fault-free operation of belt conveyors include the following: (1) The conveyor belt operates without any noise. The sound of the motor and reducer is normal. (2) The conveyor belt of the belt conveyor shall have no breaks; horizontal cracks shall not exceed 5% of the belt width, the peeling of the protective layer shall not exceed 0.3 mm, and the damaged width of the intermediate fiber layer shall not exceed 5% of the belt width. (3) The power cable of the belt conveyor is properly connected and not loose. (4) The belt conveyor drums are not broken, and the chain is not loose. The rubber layer of the roller with a rubber surface adheres tightly to the surface of the roller, allowing no delamination or cracking. (5) The support rollers of the belt conveyor are intact, rotate smoothly, produce no abnormal noises or sticking issues, and are lubricated regularly. The wear amount of the rubber layer on the surface of the buffer roller shall not exceed 1/2 of its original thickness. (6) The main shaft box, tailstock, and tensioning device of the belt conveyor are free from welding and deformation. The tail seat skid shoes should be flat and tightly connected. (7) The intermediate frame of the belt conveyor is straight with no welds; the slings (the upper width should be greater than the lower width) are in good condition, and the frame is intact, reliable, and free from severe corrosion. (8) The belt conveyor joints are firmly and evenly clamped; the vulcanized joints show no cracks, blisters, or folded edges.