Search academic texts

Information × Registration Number 0221U103163, 0118U000192 , R & D reports Title Investigation of the peculiarities of chemical and biological properties of welding aerosols in manual arc welding with electrodes with improved sanitary and hygienic properties popup.stage_title Head Lukyanenko Anna O., Кандидат технічних наук Registration Date 15-02-2021 Organization E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine popup.description2 The object of research - harmful substances (aerosols) formed during electric arc welding of high-alloy steels with coated electrodes, their chemical composition, indicators of emission levels, cytotoxicity (cell culture), toxicity (limit value) and hygienic class of welding material. It is shown that the use of these welding materials is characterized by a significant level of emissions of harmful substances in the form of welding aerosols, which contain compounds of hexavalent chromium and Nickel, which belong to the class of extremely hazardous substances, as well as manganese, fluorides and the like. The purpose of the work is to reveal the regularities of formation of hygienic characteristics of welding electrodes on the basis of researches of chemical and biological properties of aerosols. Objectives: to investigate the dependence of chemical composition, emission levels and cytotoxicity of aerosols generated by the use of coated electrodes with improved sanitary characteristics based on methodological standards of hygienic assessment of welding materials, taking into account national requirements to develop a system for assessing the toxicity of welding aerosols; to study the influence of welding current, distance from the welding arc on the level of emissions, chemical composition and cytotoxicity of the welding aerosol during welding with high-alloy and low-alloy coated electrodes; to develop methodical recommendations for the development of welding electrodes with improved sanitary and hygienic properties for manual arc welding. Research methods and the list of the equipment - sampling of ZA for their dissolution is carried out according to the DSTU ISO 15011-1: 2008 standard by a method of full capture of the aerosol formed during welding by means of the special stand with the FPP filter established on the way of ZA from shelter. welding zones. Toxicity assessment was performed at the Institute of Occupational Medicine of the National Academy of Medical S Product Description popup.authors Bezushko Olga M Goncharova Olga M Kuleshov Vasylʹ A popup.nrat_date 2021-02-15 Close