【Q&A on the Production Operations of Haichuan Coke Ovens】14. What safety measures should be taken when replacing the coke pushing rods and coal leveling rods?

Thread Content

14. What safety measures should be taken when replacing the pusher rod and the coal leveling rod? Answer: When replacing the coke pusher rods and coal leveling rods, it is necessary to prevent accidents such as electric shock caused by objects or steel cables coming into contact with the electrical conductors due to inadequate procedures for power shutdown and restoration, mechanical injuries resulting from improper operations during lifting, or injuries caused by the falling of these rods. Therefore, the following safety measures should be taken: (1) A detailed construction plan must be developed before carrying out maintenance work, and all staff members should be briefed on this plan ； (2) Identify the person in charge of on-site operations and the safety supervisor; key maintenance personnel should have relevant work experience ； (3) Lift operators must possess valid qualifications for special operations; persons who are not lift operators shall not engage in professional lifting work ； (4) The coke pusher must be parked in a safe area; a dedicated person shall be responsible for turning off the power to its path and installing stop signs where it poses a traffic hazard in the work area ； (5) Any obstacles to traffic in the work area should have the roads temporarily closed ； (6) Walking and staying within the radius of the lifted load is prohibited ； (7) Tools such as electric welding equipment should be placed in safe locations; it is prohibited to place oxygen and acetylene cylinders under hanging objects ； (8) When lifting the coke push rod, the steel rope should be firmly secured to prevent slipping and injury. 15. What safety considerations should be taken into account when using a hand-cranked device to push the coking rod or coal leveling rod? Answer: The manual operating device for the coke pushing rod or coal leveling rod is an emergency safety device that allows for the rapid retraction of such rods in case of a power outage or electrical failure while they are in use. When using this device, the following points should be noted: Set the operation knobs of the pusher rod or coal leveling rod to their zero position, cut off the control power supply to the operation panel as well as the power supply for the pusher rod or coal leveling rod, and hang a power-off sign. Switch the control handle of the manual operation device to the manual mode and secure it with positioning bolts; manually release the brakes on the pusher rod or coal leveling rod. After checking that the coke pushing rod or coal leveling rod is ready for manual operation, a designated person shall direct the rotation of the manual crank to retract the rod (four people are required to operate the manually driven coke pushing rod, and close coordination is necessary). After the coke pushing rod or coal leveling rod returns to its position, re-engage the brake, switch the manual control device to automatic mode, and secure it with positioning bolts.