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Mark Ou|Respiratory protection in welding process

Date:2017-07-26Author:
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Mark Ou

He is the technical specialist in Personal Safety Division of 3M China, with the background of mechanical engineering, economics and safety engineering, and has 13 years’ working experience in PPE. He was awarded Beijing Excellence Youth Engineer in 2005. He serves as the member of Environment, Health & Safety Specialized Committee in Welding Institution, Chinese Mechanical Engineering Society, the editorial board member of annual Essen welding technical report in Welding Institution, Chinese Mechanical Engineering Society, the occupational safety and health course lecturer of International Welding Engineer/Specialist (IWE/IWS) program, and the technical and organization committee member, IFMP Beijing 2017. He has published more than 30 papers in journals such as Electric Welding Machine, Safety, China Personal Protective Equipment and Metal Working, etc. He is also the deputy chief editor of Welding Occupational Safety and Health.


Topic of Lecture: Respiratory protection in welding process


Abstract: Welding is an important processing technology in modern industrial production and equipment maintenance, over 50% steel and non-ferrous materials for structural purpose need welding process. Welding process will emit quantity fume and hazard gas. The composition of the welding fume is different depending on welding technology and the material use in process. The particle size distribution of fume is affected by many factors, such as welding method, shield gas and welding parameters. Though the particle diameter is very small and some components shows relatively high toxicity, even radioactive, welding fume is a kind of particulate matter. According to GB/T18664 “Selection, use and maintenance of respiratory protective equipment”, KN 95(or N95) or higher efficiency respirator should be use to protect welders. In addition,we should strengthen the welding safety and occupational health education to avoid no respirator or incorrect use of respiratory protective equipment during welding operations.