Protective clothing production

Protective clothing production is used for protection of workers from the adverse effects of the external environment (mechanical, chemical, thermal, radioactive and other). Issued by enterprises and institutions workers and employees free of charge according to industry regulations, approved by ministries and departments. It should not hinder movement and increase the risk of accidents because of the possibility of seizing service parts of machines and machine tools, of ignition, etc. When working in hot shops use non-flammable jacket and slacks, of wool and canvas fabrics (Fig. 1), special shoes with smooth front. Part of protective clothing, the most affected sparks and splashes of metal and hot liquids, cover additional overlays from the more dense fire-resistant fabrics. Areas of protective clothing, more subjected to a heat treatment, have several layers: the outer of linen cloth average of wool and internal soft cotton fabric. In some cases, protective clothing made from cotton fabric impregnated fireproof means, as well as from synthetic fibers of polyester. For protection from open flames, hot items, sparks, particles of molten substances in metallurgy (Gornoye blast furnaces, the caster metal oxygen-cutting steel, and so on), and also in case of fire use socks, aprons, sleeves and gloves from asbestos cloth. Short-term (20 - 30 minutes) at extremely flammable operations apply full suits of asbestos cloth. Dust-proof overalls (Fig. 2) made of thick cotton fabrics are manufactured with double zippers and drawstrings on the sleeves and bottom of trousers.

Fig. 1. Suit for work in hot shops, is also being used in work with strong acids and chlorine. Fig. 2. Dust-proof overalls. Fig. 3. Dust suit for protection against corrosive and toxic dust.

Fig. 4. The suit for protection against acids. Fig. 5. Suit for work with open radioactive substances. Fig. 6. Pnevmokoccom LH-4.

For protection against corrosive and toxic dust produce the same coveralls with hood (Fig. 3). When working with acids and other aggressive chemicals used costume (Fig. 4) from coarse fabrics, cotton fabrics, impregnated kiotosusimi means, and from the tissues BXH-30 (wool with chlorine), SHL-40 (wool lavsan), and so on, protects against alkalis rubber fabrics and fabrics with vinyl chloride or nitrocellulose-coated impregnated with a mixture of latex SVH-1 and stearine-paraffin emulsion with provision of a solution of ammonium acetate. Often use additional protective clothing: aprons, oversleeves, bathrobes and overalls from PVC film or rubberized fabric. For protection against oil products, oils, solvents, varnishes and paints used protective clothing made of cotton with vinyl chloride coating. To protect from getting wet good canvas, rubberized fabrics, impregnated primaryservername vegetable oils, etc. When working with radioactive substances used overalls, suits and bathrobes of undyed cotton or polyester. Additionally when working with open sources use PVC or plastic aprons, oversleeves, poluchaete, overalls (Fig. 5). Work in conditions of air pollution by radioactive gases and aerosols produced in isolated pressure suits (Fig. 6)consists of a welded vinyl suit and helmet with submission under them fresh air. Need good care of protective clothing - timely repair, washing and cleaning, and in some cases chemical cleaning, decontamination, disinfection and decontamination, as well as proper storage.

Protective clothing is classified by purpose: for working in hot shops, at high dust, to work with acids and alkalis, radioactive substances, etc., By the nature of the use distinguish clothes main used daily, and additional, to be applied periodically.
When working in hot shops use non-flammable jackets and pants made of wool and linen canvas of tissues (Fig. 1). In some cases, protective O. manufacture of cotton fabric impregnated with fire retardant means. Prospectively using protective clothing, made of non-flammable synthetic fiber polyester.
Dust coveralls with hood of thick cotton fabrics (Moleskine, satin), as a rule, produce dual zippers and drawstrings on the sleeves and nizkih press.

Fig. 1. Suit (cloth) for working with strong acids, chlorine and hot workshops.
Fig. 2. Suit for work with open radioactive substances.

When working with chemically aggressive substances use Mylar O. that is highly resistant to all acids and alkalis and high durability. Protective clothing from ftorlona is also of very high chemical resistance, but less durable and has more weight than Grilles of lavsan.
Protective clothing made of wool fabrics are widely used when working with acids. Cotton O. impregnated kiotosusimi means, is used with diluted acids (up to 20%). When working with acids used O. mixed fabrics: wool with chlorine, wool and polyester, etc. To work with alkalis recommended Acting from rubberized fabric. Acting for chemically aggressive substances manufactured in the form of suits, suits and bathrobes. Often use additional protective O.: aprons, oversleeves, bathrobes and overalls made of polyvinylchloride film, TextEvent or rubberized fabric.
When working with radioactive substances used overalls, suits and bathrobes made of unpainted cotton or of lavsan, because these materials are deactivated satisfactorily. Work involving air pollution by radioactive gases, vapors and aerosols produce insulating suits. The most advanced is pnevmokoccom LH-4 (Fig. 3), which represents the welded PVC jumpsuit with a helmet. Breathing air and ventilation podcasting space is served in the upper part of the helmet (200 - 400 l in 1 min). Pnevmokoccom LH-4 can be used at a concentration of particulate matter in ambient air, exceeding the limits of no more than 10,000 times.
As an additional means of protection used aprons, oversleeves, poluchaete, overalls from PVC (Fig. 2)manufactured from polyvinyl chloride special recipes, polyethylene. Simplified construction, special selection of materials and methods of manufacture of clothing, used when working with radioactive substances, provide efficiency of decontamination, used as decontamination facilities mineral acids, oxidants and reductants.
There is also a special protective Grilles for handling petroleum products, oils, solvents, varnishes and paints, for mining, construction, and other rentgenotechnika
Protective efficiency Acting largely depends on the mode of operation. Proper storage and transportation, timely, change, Laundry and cleaning, and the industries connected with the use of toxic and hazardous substances, specific chemical cleaning, decontamination, disinfection or decontamination is required. When using pressure suits need a special device of pneumatic lines for filing a clean air and special washing machines. The mode and the procedure for the issuance of protective clothing are regulated by corresponding instructions. In the USSR on construction and materials for protective O. established special state Standards and specifications in relation to the requirements of the protection of workers from professional hazards.

Fig. 3. Pnevmokoccom LH-4.

Asbestos clothing - special fire resistant O. produced from long staple varieties of asbestos by adding to asbestos fibers 15-20% cotton. Asbestos cloth to protect the skin from the flames, hot items, sparks, molten particles substances. With negligible heat conductivity, they effectively protect the skin from the effects of heat rays. However, prolonged exposure to the flame cotton impurity charred, and the fabric is loosened and disintegrates. Asbestos clothing because of the large weight, thickness and low strength is usually used in the form getr, sleeves, aprons and gloves for protection of restricted areas of the skin (Gornoye blast furnaces, fire fighters, the caster metal oxygen-cutting steel, and others). Only in the most severe and flammable production operations can be recommended short-term (20 - 30 minutes) application of the costumes from asbestos cloth.