Investigation on harmful degree of operation and maintenance noise of metro line 1,2,3 in a western city of China

Abstract

Abstract: Objective To understand the harmful degree of operation and maintenance noise of metro line 1,2,3 in a western city,provide the basis for the noise prevention and control work. Methods The methods of field occupational hygienic investigation and detection were used for measurement and analysis on operation and maintenance noise of metro line 1,2,3 in a western city from October to November 2019. Results This study involved nine main posts and a total of 260 measuring points.In the main lines of metro,involving five kinds of posts,and the noise（L_EX,8h/40h） of exposed workers ranged 49.9-82.1 dB（A）,which all met the occupational hazard limit requirements. In the car depots and parks of metro,involving four kinds of posts,the noise （L_EX,8h/40h） of exposed workers ranged 69.3-95.9 dB（A）,which the over-standard rate was 43.8%. Conclusion In the metro line 1,2,3 in a western city,the posts with serious noise hazard are mainly concentrated in the maintenance operation of the metro's car depots and parks,and it is necessary to take corresponding engineering measures of noise reduction,and strengthen personal protection and occupational health management.

Key words: Metro, Occupational hazards, Noise

CLC Number:

R134⁺.2

ZHANG Bochao, SUN Tao, KOU Xiaobo, TANG Hong, SUN Yuanhan, DU Wenxia. Investigation on harmful degree of operation and maintenance noise of metro line 1,2,3 in a western city of China. [J]OCCUPATION AND HEALTH, 2023, 39(18): 2557-2559.

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