Non-coal mine safety is divided into several levels

The safety of non-coal mines is divided into four levels: A, B, C and D.

Four levels of non-coal mines:

The "Measures for the Supervision of Safety Risk Classification of Non-Coal Mines" divides the safety risks of metal and non-metal mines and tailings ponds into inherent risks, safety equipment and facilities, The five aspects of safety production management, employee quality and positive incentives are comprehensively evaluated and graded.

From low to high, it is divided into four levels: A, B, C, and D, which correspond to low risk, average risk, relatively high risk, and major risk. For Class A and B mines, corporate self-management will be the main focus, supplemented by random inspections. For Class C and D mines, key safety supervision will be implemented to more effectively achieve the accuracy and effectiveness of regulatory enforcement.

Non-coal mines:

Non-coal mines refer to mines that mine metallic ores, radioactive ores, and mines used as petrochemical raw materials, building materials, auxiliary raw materials, refractory materials and other non-metallic minerals and tailings ponds. Although there is no danger of gas explosion in non-coal mines, they are not fundamentally different from coal mines in other aspects. Due to the diverse conditions of ore bodies, the mining methods in non-coal mines mainly include open pit, filling and caving.

Hazardous factors in non-coal mines:

Lifting injuries:

In the production process of non-coal mines, there are a lot of lifting in the mineral processing workshop and machine repair workshop Equipment, the probability of lifting injuries is relatively high. The hazard factors mainly include traction chain breakage or slippage of sliding parts, collisions, sudden stops, etc. The resulting accidents include damage to equipment, casualties, and impact on production.

The general causes of lifting injuries are as follows: overloading; traction chains or products that do not meet the specified quality requirements; unlicensed operation of lifting equipment or operators operating in violation of regulations; objects being transported are too large; Sudden power outage; lifting equipment failure, etc. During the production process, there are also dangerous and harmful factors such as pressure vessel explosion, high temperature, corrosion, lightning strikes, earthquakes, and poor lighting.

Radiation hazards:

General non-coal mine mining, even mines that do not produce radioactive ores such as uranium, contain trace amounts of radioactive substances, such as radon. The production of radon is the result of the decay of radium 226 atoms. This decay occurs naturally and people cannot control this decay. Therefore, the production of radon is continuous, and the process of radon running from rocks into the air is also continuous.