Inhalable particles measurement and occupational health protection measures in a welding training workshop

There are many problems in welding training workshops, such as poor air quality and unsound occupational health protection measures. Measures the inhalable particles concentration in a welding training workshop in Xian. The results show that the concentration is as high as 999 μg/m3, which is far higher than the average concentration limits of PM2.5 (75 μg/m3) and PM10 (150 μg/m3) specified in GB 3095-2012 Ambient air quality standard, leading the welders to expose at high concentration of inhalable particles for a long time. Selects electric mask as one of health protection measures of the welders, and the test results show that the highest particle blocking efficiency is about 97%, which effectively solves the problem of poor air quality in the welders breathing area.