茂名市噪声作业工人听力损伤状况调查研究

Investigation of hearing impairment in workers exposing to noise in Maoming City

目的了解茂名市石油公司化工分部噪声作业对工人听力水平的影响，为采取防护措施提供依据。方法对现场作业进行噪声测试，对工人进行听力损伤测试。结果噪声作业工人的听力损伤率均随累积接触噪声工龄的增加而升高，1年～组，5年～组、10年～组、20年～组、30～35年组发病率分别为27．2％、36．3％、56．3％、52-3％、18．2％，呈明显的剂量一反应关系（P〈0．01）。重度听力损伤随着工龄的增加而加重（P〈0．05）。结论茂名市石油公司化工分部的高强度噪声对作业工人听觉系统有明显的损害。

Objective To probe into the influence of noise on workers＇ hearing in chemical division,Maoming petroleum and provide a basis for taking protective measures. Methods Noise test on site and hearing impairment test for workers had been carried out. Results The hearing impairment rate of these workers exposing to noise all gTadually increased with the length of service extension to cumulative noise exposure.To be specific,the hearing impairment rates in 1-year,5-year,10-year,20-year,and 30 to 35-year groups were 27.2%,36.3%,56.3%,52.3%,and 18.2% which displayed an obvious dose-response relation （P〈0.01）.As working years rising,the severe hearing impairment became worse （P〈0.05）. Conclusion High-intensity noise in chemical division,Maoming petroleum has great damage to workers＇ auditory system.