How to choose helmet in chimney project

In the construction of chimneys, personal protection is a very important issue, and props that are most important to personal protection should be regarded as helmets. The use of helmets can effectively prevent personal injuries caused by safety accidents. Therefore, it should be The appropriate choice of helmets in the project is to avoid safety accidents. This in itself is also conducive to the smooth progress of the chimney project and is the key to ensuring the quality of the project. It needs to be given enough attention.

(1) According to the performance selection of the helmet: Each kind of helmet has a certain technical performance index and its applicable scope. For example, when selecting a helmet in a low-temperature operating environment, a low-temperature-resistant plastic Safety Helmet (tested at a low temperature of -20°C±2°C, impact absorption and puncture resistance still meets the standard requirements) and a cold-resistant helmet should be selected; The operating environment should be selected from high temperature resistant plastic Safety Helmets or glass steel safety helmets (high temperature 50 °C ± 2 °C treatment, impact absorption performance and puncture resistance are still in line with the standard requirements); in the power industry contact with the power grid, electrical equipment should be selected with electricity Insulation helmet; In the flammable and explosive environment should be selected to have antistatic performance (resistance is less than 1 × 109Ω) helmet.

(2) Select according to specifications and dimensions.

(3) The choice of styles, large hats and big caps are suitable for open-air operations. The helmets are resistant to sunlight and rain. The small caps are suitable for narrow spaces where the range of activities such as indoor, tunnels, culverts, laneways, forests, and scaffolds are small and prone to brim collisions.

(4) Regarding the color of helmets, the principles of security psychology should be followed. The internationally more common yellow plus black bar is a sign that gives rise to vigilance, red is a sign that it is restricted or prohibited, and blue is used to show the effect. Therefore, it is advisable to use white, light yellow, and light green for the hard hats used by ordinary trades. For miners' safety helmets, the coal mines are accustomed to adopting black colors. This may be due to the fact that the coal dust is black and the safety helmet is not visible, while other colors are easily noticeable. However, the miner's safety helmet is black and apparently does not meet the safety ergonomic principle, because the lighting under the mine is poor, and the black miner's hat is vulnerable to visual accidents when the contrast is not obvious. Therefore, bright colors should be used for ease of detection and alertness. The color of the miner's cap is now in addition to black, but there are other colors, and the reflective cap or luminescent material is stuck on the helmet so that it can attract people's attention in the dark light. Some departments use different colors of safety helmets to distinguish between positions, such as safety management personnel wearing white safety helmets marked with a green cross, and maintenance personnel wearing orange-red safety helmets. In forest harvesting sites, red or orange helmets are visible and easy to spot. Radioactive work environment is usually a purple, brown safety helmet. Inflammable and explosive workplaces use red helmets.

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