Details about skin and respiratory protection

2020-04-03  From: Xi'an Husheng Mechanical-Electronic Co., Ltd. Browsing times:983

1. Skin protection


Handling and disposal of corrosive chemicals, allergenic chemicals, and when systemic toxic substances are likely to penetrate the skin, appropriate protection of the skin is required. When choosing chemical protective clothing and other protective equipment, the following points should be noted:


● The chemical will penetrate the protective layer sooner or later, and its occurrence may not leave any visible traces on the surface of the protective clothing.


● A protective material may play a good role in protecting a chemical, but it is poor in protecting against other chemicals. No protective material can provide absolute protection against chemicals.


● At higher temperatures, the time for chemicals to penetrate the protective layer will be shortened. And some materials are more sensitive to temperature changes than others.


● In general, thick protective clothing is better for preventing chemical penetration.


Protective ointment


Protective ointment may be used where protective clothing may be inappropriate or uncomfortable, such as near rotating machinery and equipment. Protective ointment should only be used for protection against relatively inactive or low-toxic chemicals. These protective creams should be used regularly on clean and dry hands during working hours.


Before use, the effectiveness of the protective ointment should be evaluated; also after use, periodic evaluations should also be made.


When exposed to toxic or harmful substances, gloves should not be replaced with protective ointment.


Wetting cream


Moisturizing cream should be provided to workers who are exposed to chemicals that can cause mild irritation to the skin. Ointment should be used at the beginning and end of each working day.


When there are toxic or harmful substances in the work, ointment should not be used instead of gloves.


gloves


Use hazardous chemicals, such as acids, alkalis and systemic poisons that may cause skin damage, and gloves should be used. Gloves suitable for specific types of chemicals should be selected and tested. The basis for selection and testing is whether the protective gloves are resistant to penetration and whether they can maintain the corresponding strength after prolonged exposure to chemicals.


For handling and handling corrosive chemicals, allergic and systemic poisons, gloves made of rubber or polyvinyl chloride (PVC) are good.


For the treatment of hydrocarbon chemicals, gloves made of nitriles are good. They are also resistant to acids, cuts and abrasions.


For exposure to oil chemicals, gloves made of neoprene are good.


Protective boots


Special boots should be worn to protect against acids, alkalis, heat and molten metals.


Protective clothing


For the protection of organic solvents, oils and greases, coats, smocks and aprons made of neoprene or polyurethane coated with nylon or polyester are good.


For protection against most oils and acids, jackets, pants, and aprons made of polyvinyl chloride (PVC) coated with nylon or polyester are good. They are equally resistant to wear and tear.


2. Respiratory protection


For the treatment of harmful atmospheric pollutants, the most important thing is to take respiratory protection measures. Dangerous or harmful atmosphere refers to an atmosphere lacking oxygen or containing toxic particles and a certain concentration of toxic gas or steam. It can immediately produce harmful effects or ultimately endanger human life or health, or even cause death.


Personal respiratory protective devices can be roughly divided into air purifiers and autonomous respirators. In an oxygen-deficient atmosphere, breathing filters should not be used.


Choosing a suitable respiratory protective equipment will depend on the following factors:


● Adequate warning provided by the concentration of pollutants (usually by smell or visual awareness);


● The characteristics of harmful substances, that is, whether they are particulate matter, harmful gases, steam or oxygen deficiency, and the combination of these factors;


● Concentration of pollutants;


● The severity of the hazard, for example, if the respirator fails, will it cause serious injury;


● The approximate time the wearer stays in the harmful atmosphere;


● The relative position of the air that has been polluted and the source of clean air that can be breathed;


● Access to the workplace and the nature of the working environment;


● Requirements for the wearer's ability and mobility;


● Whether breathing (toxin filter) is used as normal, or for emergency or rescue purposes.


3. Protective equipment (PPE) procedures


PPE is the last line of defense, so it is necessary to develop a complete PPE procedure, which can ensure that workers are effectively protected when using PPE.


There are 4 key elements of a suitable PPE program:


Pick


Protective equipment must provide adequate protection. This is a basic criterion. It should be able to deal with the hazards of a specific workplace. It is important to consider various factors, such as the nature of the hazard, the environment and circumstances of the task, acceptable exposure levels, and the conditions required for the device to function.


fit


If the desired protection is to be achieved, correct coordination and comfort are necessary.


For most PPEs, devices of various sizes should be prepared to suit the user's shape and body size. This is usually the only way to ensure that the equipment provided to each user matches exactly with him or her.


If the wearer feels uncomfortable with the PPE, they will take off the PPE from time to time, so that they will be exposed to the harmful environment at least part of the time, so that the PPE loses its proper role.


Maintenance and storage


Poorly maintained equipment can have serious adverse health consequences. Some large group organizations use specific contracts or on-site services to collect, clean, repair, and reissue personal protective equipment.


Education and training


It is important to train PPE users so that they can use protective equipment in the correct way. The content of education should include such things as the timing and occasions of using protective devices, its design features, methods of use and its limitations.

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