Safety knowledge for working at height

High-altitude work is defined in the national standard "Classification of Work at Heights" as any activity conducted at a height where there is a risk of falling from a reference plane of more than 2 meters (including 2 meters). These operations are commonly found on construction sites, where workers and materials may fall if proper safety measures are not taken. Such incidents are categorized as high-place falls or object strikes, both of which pose serious risks to personnel and property. Preventing accidents during high-altitude operations has long been a top priority in construction safety. The primary hazards include falling from edges, through openings, while climbing, working in voids, or engaging in cross-operations. Each of these scenarios requires specific safety protocols to ensure the well-being of workers. The five basic types of high-level operations are: edge work, opening work, climbing work, vacant work, and cross-operation. Edge work involves tasks near unprotected edges, such as around pits, floors, or staircases. Opening work refers to work near holes or gaps that are 2 meters or higher, like those in floors, roofs, or walls. Climbing work includes ascending structures like scaffolding or ladders, while vacant work occurs when there is no stable footing, such as in suspended areas. Cross-operations involve simultaneous work at different levels, increasing the risk of falling objects or collisions. To ensure safety during high-altitude work, various technical measures must be implemented. These include guardrails, hole covers, safety nets, and protective shelters. Before starting any work, all safety equipment must be inspected and verified for proper function. Workers should receive training and have access to personal protective equipment such as helmets, harnesses, and anti-slip shoes. Safety procedures also require regular checks of scaffolding and other structures. Scaffolds must be erected according to approved plans and inspected before use. They should be maintained in good condition and reinforced if necessary. When dismantling scaffolding, strict protocols must be followed to prevent accidents. In addition to structural safety, personal safety equipment plays a critical role in preventing injuries. Helmets, seat belts, and safety nets—often referred to as the "three treasures"—are essential tools for reducing the risk of falls and falling objects. Proper use of these items can significantly enhance worker safety. Overall, high-altitude work demands a comprehensive approach to safety, combining proper planning, training, equipment, and continuous monitoring to minimize risks and protect lives.

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