广东省2025年手传振动职业接触现状分析OA

[Background]Although hand-arm vibration syndrome has traditionally been reported more fre-quently in colder northern regions,recent cases in Guangdong Province,a subtropical region in the south,exhibit a certain degree of clustering in terms of industry distribution and company size,and for a period of time,they account for a high proportion of the total number of cases re-ported nationwide. [Objective]To describe the occupational exposure profile of hand-transmitted vibration(HTV)in Guangdong Province in 2025 and to compare exposure levels across industries,enterprise sizes,and occupational categories. [Methods]Data were sourced from the Guangdong Provincial Occupational Health Quality Control Platform,to which occupational health technical service institutions across Guangdong Province submitted relevant reports in 2025.The dataset included employers with documented HTV hazards,measurement results,and the number of exposed workers.Exposure levels were categorized into four grades according to the 4-h energy-equivalent frequency-weighted vibration acceleration:Grade I(<1 m·s-2),Grade II(1-2.5 m·s-2),Grade III(>2.5-5 m·s-2),and Grade IV(>5 m·s-2). [Results]A total of 12 468 employers with identifiable HTV exposure were identified through the platform in 2025,of which 11 710(93.92%)were in the manufacturing sector.By enterprise scale,274(2.20%)were large,934(7.49%)were medium-sized,8 749(70.17%)were small,and 2 511(20.14%)were micro-sized enterprises,with small enterprises accounting for the largest proportion.Among 22 298 job posts with identified HTV exposure,grinding,assembly,polishing,burnishing,and welding were the most common tasks.The M(P25,P75)4-h energy-equivalent frequency-weighted acceleration[a(4)]was 2.1(1.5,2.7)m·s-2,with values ranging from 0.1 to 16.2 m·s-2.Ex-posure levels were distributed as follows:Grade I,2 835 posts(12.71%);Grade II,12 761 posts,(57.23%);Grade III,6 690 posts,(30.00%);and Grade IV,12 posts(0.05%),with Grade Ⅱ posts accounting for the largest proportion.Within the manufacturing sector,21 013 exposed job posts were identified,accounting for 94.24%of all exposed posts.Twelve job posts exceeded the occupational exposure limit,of which nine were polishing positions.A total of 115 955 workers were exposed to HTV,primarily in manufacturing(110 879;95.62%).Among the exposed workers,21 237,23 454,65 047,and 6 217 were employed in large,medium,small,and micro-sized enterprises,re-spectively.Grinding,assembly,polishing,deburring,and welding were the five most common occupational categories among the exposed workers.The distribution of worker by exposure grade was similar to that of exposed posts:Grade I,11 921 workers(10.28%);Grade II,65 463 workers(56.46%);Grade III,38 447 workers(33.16%);and Grade IV,124 workers(0.11%). [Conclusion]In Guangdong Province,HTV exposure is mainly concentrated in the manufacturing sector,particularly in metal product manufacturing,and commonly involves tasks such as grinding,assembly,and polishing.Both exposed enterprises and exposed workers are predominantly concentrated in small enterprises.Grade II exposure accounts for the largest proportion of both exposed job posts and exposed workers,and some workers are at a risk of developing hand-arm vibration syndrome.These findings suggest that targeted occupational management and comprehensive control measures should be strengthened to reduce HTV exposure and prevent hand-arm vibration syndrome.