Ensuring Safety During the Installation, Replacement, and Maintenance of Mining Screens

Work at heights is a routine part of installing, replacing, and maintaining mining screens. Screening machines are typically mounted on steel platforms 3 to 6 meters above the ground, with heavy, high-speed machinery operating beneath and the immediate area cluttered with metal screen plates and polyurethane modules. In such an environment, safety is paramount; a standardized set of operating procedures is essential to completely eliminate risks.

Before Work Begins: A Three-Step Safety Check

Three mandatory checks must be completed before work starts. First, verify that all personnel possess the required qualifications for working at heights and are wearing double-hook safety harnesses; hooks must be attached to independent, load-bearing anchor points rather than casually clipped to the screen machine frame. Second, lock out the machine's power source and attach a "Do Not Start" safety lock; assign a dedicated person to stand guard at the power distribution cabinet to prevent accidental startup. Third, clear the platform of loose tools and accumulated material to eliminate tripping hazards.

During Work: Standardized Procedures to Avoid Secondary Risks

Working alone at heights is strictly prohibited; at least two people must work together—one performing the task and the other acting as a safety monitor. When handling heavy high-manganese steel mining screens, use specialized lifting clamps; carrying them by hand across narrow platforms is forbidden to prevent them from falling and injuring personnel below. When removing old screens, dismantle them progressively from bottom to top rather than prying up the entire screen surface at once, which could cause elastic plates to spring up and cause injury. Data shows that strictly adhering to a two-person monitoring protocol significantly reduces the risk of accidents during high-altitude work.

After Work: Final Checks to Eliminate Residual Hazards

Once replacement work is complete, do not simply start the machine and leave. First, inventory all tools and spare parts to ensure no screws or wrenches have been left inside the machine, preventing damage to the screen surface or the screen box upon startup. Next, inspect the mounting bolts on every mining screen to ensure none are loose or missing. Finally, conduct a three-minute test run to check for abnormal noises or screen displacement before putting the equipment back into regular operation.

During the installation, replacement, and maintenance of mining screens, these safety precautions must be integrated into daily operational habits. The safety protocols governing these tasks represent life-saving guidelines distilled from the long-term experience of countless mining enterprises. Strictly implementing these procedures not only prevents safety accidents but also avoids premature screen wear caused by improper installation, thereby achieving both safety and efficiency targets.