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Two types of face-protection devices are available: 1.0 Face Shield Assemblies for Headwear-Attachment Face shields are connected with the safety helmet by means of an universal adaptor. They are available in a large variety of models for all applications and usually made of either Polypropylene (light duty quality), or Polycarbonate (medium duty quality). Polycarbonate visors are stronger and more heat resistant than Polypropylene visors. Polypropylene visors are more scratch resistant and generally less expensive than polycarbonate visors. 2.0 Face Shield Assemblies with Integral Headgear We also offer face shield assemblies that are worn without a safety helmet. They provide eye and face protection against flying particles, sparks and chemical splash. When used with a green tinted or smoke visor, they also protect against glare. Suitable for light chipping, grinding, woodworking, chemical handling, labwork and similar activities. Basically face shield assemblies consist of a headgear assembly and a replaceable visor which is mainly made of Polycarbonate. Most of them feature friction joints to hold the assembly in either raised or protective position without slippage. They may be worn together with eye protection devices and can also accommodate respiratory protection equipment. Legislations for further information: EUROPEAN STANDARDS: EN 166:2001 To assist you in your understanding of markings on Eye Protection Products covered by this Standard you should note: Optical Standard Frame Lens Class 1: For Continuous Work - 1 Class 2: For Intermittent Work - 2 Class 3: For Occasional Work, but must not - 3 be worn continuously Mechanical Properties: Increased Robustness (General Purpose) - S High Energy Impact (190 m/sec) A A Medium Energy Impact (120 m/sec) Grade 1 B B Low Energy Impact (45 m/sec) Grade 2 F F Increased Robustness - General Purpose Impact - Performance at Extremes of Temperature T T Areas of Use: Liquids (chemical) 3 - Large Dust Particles 4 - Gas and Fine Dust Particles 5 - Short Circuit Electric Arc 8 - Molten Metals and Hot Solids 9 9 Optional: Resistance to Misting/Fogging - N Resistance to Mechanical Damage (Anti-Scratch) - K NB: The ”A“, ”B“, ”F“ and ”S“ markings on frame and lens represent tests carried out on each component and therefore may be different - in which case the lower level must be assigned to the complete unit when making an assessment. EN 169:2002 Filters for Welding and related techniques EN 170:2003 Ultra-Violet Filters EN 171:2002 Infra-red Filters EN 172:2004 Sunglare Filters for Industrial Use EN 175:1997 Welding Work Equipment EN 207:2012 Laser Protection Eyewear EN 208:2010 Laser Adjustment Eyewear Welding Protection A special subgroup within this chapter is dedicated to the requirements of welders. Welding is the process of connecting metal parts by using heat, pressure or both, with or without the addition of a weld metal of the same kind. There is a number of hazards involved in welding. The most frequently used welding methods are: 1.0 Oxy-Acetylene Welding Main applications: Repair jobs, installation work, pipeline welding. The parts will be connected by using as weld metal a special gas welding rod. All metal parts involved in the welding process will be subjected to great heat which causes the metals to melt and mingle. This results in a stable connection after cooling. The heat for this kind of welding process is generated by a gas flame. 2.0 Electric Arc Welding Main applications: Repair works. The parts are connected by using a weld metal, an electrode and heat. The heat for melting the metals is generated by transforming electricity into an arc of light. This type of welding requires better protection for the workers‘ bodies than oxyacethylene welding. The choice of electrodes depends on the requirements of the job, i.e. which metals should be welded, or how thick the materials are. 18 Molten Metals and Hot Solids 99

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