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3.0 Special Clothing Against Combined Hazards Special quality characteristics are required at drilling rigs or oilfields where oil and chemical resistant clothing has to be flame resistant as well. Garments as such are manufactured by a few specialised manufacturers. Their range of garments include: ➤ Acid Suits With flame resistant properties ➤ High-Visibility Garments With flame resistant properties ➤ Rainwear Can be furnished either flame-resistant, antistatic, Hi-Vis or in a combination of these three 4.0 Chemical Resistant Garments Chemical resistant garments are conceived to protect workers against chemical splash, oil spillage, etc. Several materials are available: ➤ For light and medium duty applications we offer boiler suits, jackets, trousers, hoods and sleeves. These may be made either of polyester and coated on both sides with PVC or from a polypropylene/polyethylene composite fabric. They form an effective barrier to low viscosity liquids and acids, solvents and alkaline solutions in medium concentrations. Whereas polypropylene/polyethylene composite fabrics provide the more economic solution to protect against liquid chemicals in light to medium concentrations, PVC coated polyester is considerably better in tear and abrasion resistance but also more expensive. ➤ For a higher degree of protection against aggressive chemicals, multi-layered fabrics, which provide a highly effective barrier against a wide range of hazardous materials, are state of the art. These garments are designed for protection both against spray and heavy splash of liquid chemicals. Still, PVC is the most common base material but new synthetic fabrics add onto those traditional ones and they increase considerably the resistance to very aggressive chemicals. Some of them even have flame resistant and anti-static characteristics, which lately allow such heavy-duty chemical suits to be offered completely FR and also anti-static, which fits them into the sub-group “Special Clothing Against Combined Hazards“ (see above). Such garments meet EN 1149, EN 1073 and as well EN 465, EN 466 and EN 467 for chemicals resistant properties. Please note that these suits are basic skin protection garments and are not intended for situations requiring respiratory protection. For chemical hazards immediately threatening life, choose a chemical proof and gas-tight model together with respiratory protection devices. These are available at specialised suppliers only, such as our associate company, Rosenbauer International AG. Chemical Resistant Garments Selection: In order to select the right chemical resistant garment, these are categorised into different types according to their physical properties. Chemical Protective Clothing - Category III Other types of protection Type Description Standard Type 3 Protection against pressurised liquid chemicals EN 14605 Type 4 Protection against liquid aerosols EN 14605 Type 5 Protection against airborne solid particulate chemicals EN ISO 13982-1 Type 6 Limited protection against liquid mist EN 13034 Type 3 Type 4 Type 6 Description Standard Protection against particulate radioactive contamination EN 1073-2* Biological protection (infective agents) EN 14126 Electrostatic discharge if properly grounded (Anti-Static) EN 1149-1:1995** * Gives no protection against radioactive radiation. ** The antistatic treatment is only effective when relative humidity is > 25 %. 174

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