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目的调查奥西某水泥公司水泥粉磨站的工艺特点、职业病危害因素的种类及浓(强)度,提出相应的控制措施。方法对水泥粉磨站的工艺流程、职业病危害因素种类及现场检测的资料进行收集、整理与分析。结果该水泥粉磨站工艺特点为采用新技术设备。职业病危害因素主要是粉尘(水泥尘、矽尘、石灰石粉尘、石膏粉尘和熟料尘)和噪声2类。粉尘时间加权平均(TWA)浓度范围0.3～44.4 mg/m3,超标率53.3%;短时间接触浓度(STEL)范围0.3～68.0 mg/m3,超标率19.0%。水泥粉尘浓度超标38.9%～58.3%,熟料尘浓度超标11.1%～33.3%,矽尘、石灰石粉尘和石膏粉尘浓度均在国家职业卫生限值范围内。作业岗位的个体噪声强度为78.9～86.4 dB(A),超标率为16.7%。结论该项目职业病危害因素为水泥粉尘、熟料粉尘和噪声。对此提出了职业病危害预防控制措施和管理措施,以保护劳动者身体健康。
Objective To investigate the process characteristics, the type of the occupational hazards and the concentration (strong) degree of the cement grinding station in a certain Aoxi cement company and put forward the corresponding control measures. Methods The technical process of cement grinding station, the types of occupational hazards and the on-site testing data were collected, collated and analyzed. Results The cement grinding station process features using new technology and equipment. Occupational hazards are mainly dust (cement dust, silica dust, limestone dust, gypsum dust and clinker dust) and noise 2 categories. The time weighted average dust concentration ranged from 0.3 to 44.4 mg / m3 and the over-standard rate was 53.3%. The STEL range was 0.3 to 68.0 mg / m3 and the over-standard rate was 19.0%. Cement dust concentration exceeded 38.9% -58.3% and clinker dust concentration exceeded 11.1% -33.3%. Silica dust, limestone dust and gypsum dust concentration were within the limits of national occupational health limits. The individual noise intensity of the job post is 78.9-86.4 dB (A), and the exceeding standard rate is 16.7%. Conclusion The occupational hazards of the project are cement dust, clinker dust and noise. In this regard, put forward the occupational disease prevention and control measures and management measures to protect the health of workers.