Study on Administrative Standard Recommendable Values for Respirable Dust Concentration in the Air of Cement Workplaces
Liu Guozhen, Guo Wanhua, Zhao FengqiHygienic and Antiepidemic Central Station of Third Railway Engineering Bureau, (Taiyuan 030006)
The administrative concentration was studied according to the at present standard country,i. e. ,the Maximum Allowable Concentration (MAC) of total dust. And adopted dusttwo-stage samplers impactors sampling to measure Total Dust Concentration (TDC) and Respirable Dust Concentration (RDC) in the air of cement workplace, which is conform which the demand of British Medicine Research Committee (BMRC) curve separate standard.the administrative concentration in the air of workplaces was studied with the methods of TDC and RDC specific values,linear and curve regression. The results showed that administrative concentration of coal and cement respirable dust of free silica≤10% (coal is 3. 5 mg/ m3,cement is 2. 0 mg/m3) agree with a recommended values of respirable dust of MAC and the lime stone and mixed raw materiats dust was 3. 5 and 3. 1 mg/m3 respectively, the clay and high temperature calcine materials (calcins chamotte or calcine slaked materils) dust was 4. 0 mg/m3.
【CateGory Index】： R134