论文部分内容阅读
目的预防和控制煤层气发电过程中职业危害,保护劳动者的安全与健康。方法开展现场职业卫生学调查与职业有害因素检测。结果 CO平均接触浓度为(4.34±0.06)mg/m3,NO2平均接触浓度(0.44±0.02)mg/m3,SO2平均接触浓度(0.72±0.01)mg/m3。噪声强度为84.8～92.8 dB(A),工种8 h等效声级82.0 dB(A);频率计权振动加速度0.15m/s2;湿球黑球温度(WBGT)指数31.5℃;热辐射强度570 W/m2;控制室噪声强度73.5 dB(A),工频电场强度0.145kV/m;变压器室工频电场强度0.148 kV/m。结论该煤层气发电工作场所空气中有害气体和物理因素危害检测结果均符合国家职业接触限值。噪声、高热环境、CO、NOx及硫化物是煤层气电站职业危害防护重点。
Objectives To prevent and control occupational hazards during coalbed methane power generation and to protect the safety and health of workers. Methods To carry out on-site occupational hygiene investigation and detection of occupational harmful factors. Results The average contact concentration of CO was (4.34 ± 0.06) mg / m3, NO2 average concentration (0.44 ± 0.02) mg / m3 and SO2 average concentration (0.72 ± 0.01) mg / m3. The noise intensity is 84.8-92.8 dB (A), the 8 h equivalent sound level is 82.0 dB (A), the frequency-weighted vibration acceleration is 0.15 m / s2, the WBGT index is 31.5 ℃, and the heat radiation intensity is 570 W / m2; control room noise intensity 73.5 dB (A), power frequency electric field strength 0.145kV / m; transformer room power frequency electric field strength 0.148kV / m. Conclusion The detection results of harmful gases and physical hazards in the air of the CBM power generation workplace are in line with the national occupational exposure limits. Noise, high thermal environment, CO, NOx and sulfide are the focuses of occupational hazard protection in CBM power plants.