Failure Analysis For Non-Powered Air-Purifying Particle Respirator Affected By Sweat

Significant improvements have been achieved in China’s standardization work of disposal self inhalation respirator in the past few years. With the wide application of the nonwoven melt-blow technology and the electrets polymer material, the disposal respirator with low resistance and high filter efficiency has been developing quickly in recent years. Meanwhile, the respirator fitting characteristics has been taken more attention by Chinese user. On the other hand, the working environment still need to improve for respirator wearers, more research and active way is needed to response the adverse effect on respirator with dust and sweat.In this study, various types of disposal respirator have been compared by filtration efficiency test using the standard of GB2626-2006, and try to find the best sample for further research. The filtration efficiency and fitting performance will be tested for the chosen sample soaked in artificial sweat with different time. The relationship between service life of disposal respirator and the sweat soak duration will be evaluated by experiment.The results show that filtration efficiency of disposal respirator may decrease obviously after soaked in artificial sweat under one shift working time(8h), and even the filtration efficiency may approach the minimum requirement, so that the disposal respirator may failure to protect wearer. The increase of inhalation resistance may either result in the failure of the fit performance of disposal respirator after4h soaked. it is suggested that the respirator may be negatively affected by the sweat under high labor strength and extreme working environment. So manager should consider to decrease the replacement frequency of disposal respirator, or to reduce the labor intensity, and increase the rest time, to reduce the negative effect to the respirator by sweat. Meanwhile, in the study, some optimized respirator management skills are recommended, and some analysis for responsibility distribution of respirator management is also suggested...