![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
In the environment we live in, there is a lot of dust, especially in densely populated cities and chimney-filled factory areas. Dust trails can be seen everywhere. If the long-term inhalation of dust can induce many diseases in the body, the most well-known is pneumoconiosis. What is the dust detection standard? How to prevent dust more effectively?
Dust detection standard
GB: The criteria for determining the dust exposure concentration of coal mines are as follows:
Dust type
1, free SiO2 content (%)
2. Respiratory dust concentration (mg/m3)
3, coal dust: ≤ 5 5.0
4. Rock dust: 5 to 10 2.5/10 to 30 1.0/30 to 50 0.5/≥50 0.2
5, cement dust: <10 1.5
Coal dust (free SiO2 content <10%) Coal dust (free SiO2 <10%)
Total dust 4 6
Hood 2.5 3.5
How to prevent dust more effectively
First, reforming the technological process and innovating production equipment are the fundamental ways to eliminate dust hazards. Should start from the production process design, equipment selection, and dust-making machinery in the factory should have reached the dust-proof requirements of the equipment and other aspects of the link. If closed wind tunnel transportation is adopted, negative pressure dust absorption is adopted to eliminate dust flying, quartz is replaced with non-defective material, sand blasting is replaced by iron shot blasting, and the like.
Second, wet operation is an economical and effective measure to prevent dust from flying. Any work that can be used in wet production can be used. For example, wet drilling of mines, scouring roadways, purified air inlets, etc., wet smashing of quartz, ore, etc., wet mixing of glass and porcelain, wet sand molding of the foundry industry, wet-sand open sand cleaning, chemical cleaning Sand and so on.
Third, confined, suction, dust, dust can not be used for wet jobs, should be closed air suction dust removal method. The main equipment that can produce dust should be sealed as much as possible, and use a partial mechanical suction, so that the sealed equipment to maintain a certain negative pressure, to prevent dust from escaping, the extracted dust air must go through the dust purification treatment in order to discharge, to avoid pollution atmosphere.
Fourth, health care measures. To prevent dust from harming human health, the first step is to eliminate or reduce the source of occurrence. This is the most fundamental measure. Followed by reducing the concentration of dust in the air. The last step is to reduce the chance of dust entering the human body and reduce the danger of dust. Health care measures are the last link in prevention. Although they are auxiliary measures, they still occupy an important position. They include the following measures:
1 personal protection and personal hygiene. For the operation where the dust concentration does not meet the allowable concentration standard when the conditions are limited, it is an important measure for the operator to wear a suitable dust mask. Dust masks should have high dust-filtering rate, high air permeability, and light weight, and should not affect the visibility and operation of workers. To carry out physical exercise, pay attention to nutrition, have a certain significance to enhance physical fitness and improve resistance. In addition, attention should be paid to personal hygiene habits, adherence to dust-proof operation procedures, and strict enforcement of the system of wearing dust masks without going to work.
2 before employment and regular medical examinations. Workers who are newly engaged in dust operations must undergo health checks. The purpose is mainly to find employment contraindications for dust operations and health information. The purpose of regular medical examinations is to detect the health damage caused by dust at an early stage and find that there are diseases that are not suitable for dust operations. Timely transfer.
Editor's summary: The relevant information about the dust detection standards was introduced here for everyone. I hope this article will be helpful to everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
Environmental testing
Trimless Spotlight,Recessed Spot Lights,Led Recessed Spotlights,Flush Spotlights
FOSHAN CITY KURUI LIGHTING CO.,LTD , https://www.kuruilighting.com