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为了研究火力发电厂粉尘与尘肺发病的剂量－反应关系，根据某火力发电厂接尘工人接尘时间、肺总通气量、粉尘浓度和游离二氧化硅含量，计算职工肺内石英负荷量，然后采用累积剂量患病率寿命表法研究尘肺患病率与粉尘的剂量－反应关系，推算该类粉尘的容许浓度。结果表明接尘剂量与尘肺患病率呈显著正相关关系，提示每人平均工作３０ａ，使尘肺患病率低于５‰，接触煤粉者和接触灰粉者作业场所平均粉尘浓度分别应控制在１０．００ｍｇ／ｍ３和３．２５ｍｇ／ｍ３以下。
In order to study the dose-response relationship between the dust and pneumoconiosis in thermal power plant, the worker’s lung volume of quartz was calculated according to the dust collection time, the total lung ventilation, the dust concentration and the free silica content of the workers in the thermal power plant, and then Dose-response relationship of pneumoconiosis prevalence and dust was studied using cumulative dose-rate life-table method to calculate the allowable concentration of this kind of dust. The results showed that dust dose and pneumoconiosis prevalence was positively correlated, suggesting that the average work per person 30a, the pneumoconiosis prevalence rate of less than 5 ‰, contact with pulverized coal and contact dust were average workplace dust concentration should be controlled Below 10.00mg / m3 and 3.25mg / m3.