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为了解钦州地区小化肥厂职工听力受损情况,于1989年12月至1990年3月对本地区2家小化肥厂、3家小氮肥厂进行了听力测定,报告如下。1 对象和方法1.1 听力检查对象为造气、净化、合成、球磨等车间或工段中岗位噪声强度≤78dB(A)的工人531人,其中男性78人,平均年龄44.44(21—60)岁,平均工龄16.14(1—33)年;女性453人,平均年龄36.38(18—55)岁,平均工龄13.08(1—37)年。受检对象中已除外鼓膜穿孔1人、工龄、年龄、工种等项目不齐全者4人。
In order to understand the hearing impaired of staff and workers of small fertilizer factories in Qinzhou, hearing tests were carried out on two small chemical fertilizer plants and three small nitrogen fertilizer plants in this area from December 1989 to March 1990, and the report is as follows. 1 Subjects and methods 1.1 The hearing test objects are 531 workers with 78% (A) or less noise intensity in workshops or workshops in gasification, purification, synthesis, ball milling, etc., of whom 78 are men, with an average age of 44.44 (21-60) The average length of service is 16.14 (1-33) years; 453 are women, with an average age of 36.38 (18-55) years and an average length of service of 13.08 (1-37) years. Subjects have been excluded except tympanic membrane perforation, length of service, age, type of work and other items are not all 4.