某企业石雕作业工人疲劳度水平调查
Fatigue Induced by Occupational Stone Carving
-
摘要:
目的 调查某企业石雕作业工人的疲劳度水平。 方法 现场测定济宁某石雕加工厂职业危害因素,并对石雕作业工人(n=50)及对照组(n=40)进行劳动强度和疲劳度的调查。 结果 石雕作业中产生的粉尘浓度为23.33~125.33 mg/m3,呼吸性粉尘的构成比为66.0%~78.9%,噪声强度为90.0~104.0 dB(A)。心率值测定显示石雕作业为中等强度体力劳动。研究组工人疲劳度总得分(18.78& #177;7.02)分,A因子(身体症状)、B 因子(精神症状)、C 因子(神经感觉症状)得分分别为(7.36& #177;2.66)、(6.46& #177;2.19)、(5.28& #177;2.08)分,疲劳度达到中等水平,均高于对照组(P< 0.01)。 结论 该企业石雕作业的粉尘及噪声危害较为严重,作业工人的疲劳度均达到中等水平。 Abstract:Objective To evaluate fatigue levels among stone carving workers. Conclusion An occupational hazards survey was carried out in a stone carving plant, and the labor intensity and the fatigue degree of occupational workers (n=50) and control workers (n=40) were evaluated. Results The concentrations of dust were 23.33-125.33 mg/m3, and respirable dust accounted for 66.0%-78.9% of total dust. The 8-hour equivalent continuous A-weighted sound pressure levels were 90.0-104.0 dB(A). Stone curving work was identified as moderate intensity physical labor according to heart rate. The total fatigue score of the occupational workers was (18.78& #177;7.02), and the scores of factor A (physical symptoms), B (mental symptoms), and C (nerve system symptoms) were (7.36& #177;2.66), (6.46& #177;2.19), and (5.28& #177;2.08), respectively, indicating moderate level of fatigue and significantly higher than those of the control group (P< 0.01). Conclusion Outstanding occupational hazards of dust and noise are detected in the stone curving plant, which can lead to moderate-level fatigue among occupational workers.