Analysis on the effect of sound insulation reconstruction in operation room of steel rolling production line in a steel plant
10.3760/cma.j.cn121094-2191028-00506
- VernacularTitle:某钢铁厂轧钢生产线操作室隔声改造效果分析
- Author:
Guoshun CHEN
1
;
Huanling ZHANG
;
Ruizhen LIU
;
Guizhen GU
;
Shanfa YU
Author Information
1. 462500 舞钢劳动卫生职业病防治研究所
- Keywords:
Noise;
Occupational exposure limit;
Exposure;
Sound insulation;
Technological transformation
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2020;38(8):582-585
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of sound insulation improvement on the noise exposure of workers in the operation room of hot rolling line for wide and heavy plate.Methods:From September 2019 to September 2017, based on the occupational health Survey, the data of 25 fixed operation rooms and workers in operation rooms of a steel rolling production line were collected retrospectively, the noise exposure levels before and after the improvement of sound insulation were statistically analyzed.Results:The noise exposure value of the workers, the qualified rate of 0 Grade 8 hours equivalent noise (L EX, 8 h) ≤85 dB (A) and the qualified rate of the design limit value of the operation room were all higher than those before the modification, the difference was statistically significant ( P<0.01) , after the renovation, the Class II and above noise hazards were eliminated, the equivalent continuous a sound level (L Aeq, 8 h) >75 dB (A) of the workers in the operation room was 8h, and the noise level in the operation room still did not meet the Ergonomics limit standard. Conclusion:The improvement of sound insulation can effectively improve the working environment of noise workplace operating room and reduce the workers'noise exposure level.
