Explain the safe use of protective clothing
Protective clothing, as the name implies, is a clothing that provides protection for certain people (including high temperature, high pressure, high radiation, and medical, military, and other special groups). How safe is the use of protective clothing? Where should I pay attention to when using protective clothing? How to use protective clothing correctly? The following explains the detailed explanation.
ready
Before wearing, we must ensure the suitability of chemical protective clothing, that is, whether the protective clothing is in good condition.
Visual inspection to see if there is any contamination on the outer surface of the protective clothing, whether the thread is cracked or not, and whether the clothing is broken or not. For airtight protective clothing, airtightness testing (once every six months) should be performed regularly with a special airtightness tester so that the protective clothing can function in emergency wear. The inspection before wearing is very important. If judged by experience alone, it is considered to be safe equipment, and in fact it may cause serious injury accidents if it is not safe.
Correct size Before you wear, you must re-confirm that the size of the protective suit is a size that suits you. If it is too large or too small, it can cause inconvenience or accidental hanging or tearing during work.
Remove sharp objects Remove unnecessary keys, knives, pens, etc. from the body to avoid damage to the protective clothing during work.
Choice of place Dressing rooms are ideal places for dressing, and if they are not, they should be conducted in a relatively unpolluted environment. Under emergency rescue conditions, clothing should be performed in a cold area.
Other necessary auxiliary systems Before using chemical protective clothing, make sure other necessary auxiliary systems such as air supply equipment, decontamination equipment, etc. are ready.
Wearing
Protective clothing should be worn in a certain order. This can ensure that protective clothing is worn correctly and quickly, and that it is effective in the protection of work clothes. It also lays the foundation for the safe removal after use. Generally should follow the trouser legs - boots - tops - masks - hats - zippers - the order of gloves. Finally, in order to improve the airtightness of the entire system, adhesive tapes can be applied to the openings (such as plackets, cuffs, trousers, face masks, and protective clothing hooded interfaces.) In order to enhance hand protection, you can choose to wear two layers of gloves. During the entire process, it is necessary to prevent the inner layer of the protective clothing from being exposed to the external environment so that the protective clothing will not be contaminated at the beginning.
jobs
During the work process, it should be noted that when chemical protective clothing is continuously polluted by chemical substances, it must be replaced within the prescribed protective time. If chemical protective clothing is damaged, it should be replaced immediately.
For airtight protective clothing or non-hermetic protective clothing with good airtightness, due to working in a relatively isolated space, it is recommended to follow the principle of two people associating, that is, at least two people work together to enter the work area in preparation for When a situation occurs, it can be rescued promptly.
Chemical protective clothing fabrics can provide effective protection for several hours, but if you wear an air-breathing device, the working hours are determined by the working time of the air respirator. Pay attention to the effective use time of the air breathing apparatus, and replace it before the cylinder is used up. And when calculating the effective working hours, the time taken for walking and changing equipment should be considered.
Removal
The principle that should be followed when taking off protective clothing is to safely take off protective clothing and not cause pollution to the human body and the environment. What is important to emphasize here, but often overlooked, is the need to carry out the necessary washing and decontamination before removing chemical protective clothing. The decontamination mentioned here is only to be able to safely remove the protective clothing without contaminating the wearer or the environment, and not for the re-use of certain protective clothing. According to the different contaminants, decontamination can be very simple, such as using a bucket of water to remove common contaminants, or adding some detergent to rinse. At this time, it is necessary to pay attention to some chemicals, such as concentrated sulfuric acid in water will have a violent exothermic reaction, this time should first remove the clothing surface chemicals, and then rinse with water. This can avoid high heat damage protective clothing, and then cause pollution and harm to the wearer.
After washing and eliminating dirt, taking off chemical protective clothing also needs to follow certain procedures. Generally, it is a zipper - hat - tops - sleeves - gloves - trouser legs - boots - respirator. Before the gloves are removed, try to touch the outer surface of the protective clothing. After the gloves are removed, try to contact the inner surface of the protective clothing. After the protective clothing is taken off, the inner surface should face outward, and the outer surface and contaminants should be wrapped inside to avoid Pollutants come into contact with the human body and the environment. Take off the protective equipment to be treated centrally to avoid increasing pollution in the process.
It should be noted here that for wearing protective clothing that is more complicated and bulky, such as airtight or liquid-tight protective clothing, it is recommended to wear another assistant to assist in wearing and removing, which can help the wearer to make some adjustments and zipper comparisons. Difficult work and eventually check the situation after the entire protective clothing is put on. When assisted in taking off protective clothing, the assistant should also perform appropriate protection to avoid contamination due to possible exposure to contaminants.
Training and drills
Every person who wears a chemical protective suit must be trained beforehand. This can be done by the protective clothing provider or by an experienced staff member. In addition to all the matters mentioned above, it is important to emphasize the importance of keeping protective clothing (such as zipper pulls, openings, and other protective equipment, etc.) in order to be safe, because it is necessary to wear protective clothing every day. This may not be very comfortable for the service workers, but it is of the utmost importance for the entire chemical protection system to ensure safety. At this time, protection is still the top priority. If necessary, comfort needs to be reconsidered.
For emergency rescue, there must be necessary exercises in addition to training. The wearer can be familiar with the wearing and performance of various protective articles, and can be familiar with wearing protective clothing, especially airtight protective clothing, and can cooperate and communicate well with his companions.
Because training and exercises are harmful to chemical protective clothing, air tight protective clothing may be ineffective, and airtight protective clothing is very expensive. Some manufacturers (such as DuPont) can provide the same material and design. Special training suits are relatively cheap. It is also possible to use expired or ineffective protective clothing for exercises, provided that protective clothing cannot have toxic and harmful pollutants on the human body.
guardianship
The last point to mention is that all users should be subject to occupational health monitoring during the use of chemical protective clothing. If the use of personnel in the occurrence of skin itching, tingling and other hazards, should stop using and re-evaluate the suitability of the selected chemical protective clothing. The correct use of chemical protective clothing is a very practical topic. There are also many details that need attention in practical operations. Through the development of operating procedures and continuous improvement in practice, the use of chemical protective clothing can be standardized to achieve the desired protective effect. .
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