[Reduction of dust during manual grinding of cast iron].
The method for determining the emission of dust and the effectiveness of dust removal from machines and devices by local exhaust ventilation to the workplace air is presented. This method consists in determining concentrations of air pollution in the measuring duct through which it is sucked off from the chambers with tested devices. At the same time the volume of air flow rate is measured. A laser dust analyzer is used to measure dust concentrations in the air. Air is sampled with isokinetic sampling heads. It was shown that dust emission at different kinds of manual grinding of cast iron without ventilation was between 24 mg/min and 8131 mg/min, whereas with the use of local exhaust ventilation it decreased below 35 mg/min. The efficiency of the exhaust elements was over 95% at optimum use of local ventilation.
Gliński
Maciej
M
Zakładu Zagrozeń Chemicznych i Pyłowych Centralnego Instytutu Ochrony Pracy w Warszawie. magli@ciop.pl
D000395:Air Pollutants, Occupational / Q000032:analysis; D000397:Air Pollution / Q000517:prevention & control*; D004391:Dust / Q000032:analysis / Q000517:prevention & control*; D004784:Environmental Monitoring / Q000379:methods / Q000706:statistics & numerical data*; D007501:Iron; D008669:Metallurgy / Q000379:methods*; D010316:Particle Size; D011044:Poland
D000395:Air Pollutants, Occupational; D004391:Dust; D007501:Iron
Ograniczanie pylenia podczas szlifowania zeliwa.