Essential characteristics of hand-arm vibration in hand-held workpiece polishing
10.11763/j.issn.2095-2619.2016.03.015
- Author:
Bin XIAO
1
;
Qing-Song CHEN
1
;
Han-Sheng LIN
1
;
Wei WEN
1
;
Dan-Ying ZHANG
1
;
Guo-Yong XU
1
;
Mao-Sheng YAN
1
;
Gui-Ping CHEN
1
Author Information
1. Guangdong Province Hospital for Occupational Disease Prevention and Treatment,Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment Guangzhou,Guangdong 510300,China
- Publication Type:Journal Article
- Keywords:
Hand-held workpiece;
Hand-transmitted vibration;
Hand-arm vibration syndrome;
Occupational disease;
Occupational exposure;
Investigation
- From:
China Occupational Medicine
2016;43(03):312-319
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE: To study the occupational exposure characteristics of hand-transmitted vibration in hand-held workpiece polishing and to provide the basis for occupational hazard prevention and control technology research in this kind of job. METHODS: The questionnaire and on site occupational health investigation were used to study 4 typical enterprises of hand-held workpiece polishing. The study was conducted by filling forms by enterprise,personal interviews with administrative staffs and front-line workers,as well as on site visit. RESULTS: Among the 4 factories,there were 835workers( 22. 4%) engaged in the hand-held workpiece polishing assignment. The principal vibrating tools used in these 4factories were polishing machine,flint glazing machine and polishing wheel,and the workpiece polished by workers were button,toilet lid,thermos,mobile phone shell and golf head. The polishing workers were all equipped with noise reduction earplugs and anti-dust respirators, but they did not wear anti-vibration gloves. The hand-held workpiece polishing assignment has the characteristics including indirect and continuous vibration exposure and fine operation. Some workers used their knees and abdomens as the support to polish workpieces. The vibration exposure time was 6-11 h / d. The 4hours energy equivalent frequency-weighted acceleration to vibration [ahw( 4)]was 1. 9-19. 4 m/s~2,with the maximum which exceeded the occupational exposure limit( 5. 0 m / s~2),showing a wide range ahw( 4)in the same enterprise. CONCLUSION: Compared with the traditional vibrating tools,the hand-held workpiece polishing operation has different characteristics of hand-transmitted vibration such as more sophisticated machine structure,finer polishing ways,more influencing factors of vibration exposure level and more extensive body parts involved.
