Assessment on current situation of occupational hazard in an open-pit limestone mine
HUANG Wen-wei;ZHENG Ming;HUANG Yuan-wei;LI Bo;HUANG Xiao-xiong;LIN Qi-yan;ZHANG Ying;LIN Li-xin;Department of Occupational Diease,Meizhou Center for Disease Control and Prevention;
Objective To analyze and assess the current situation of occupational hazards in an open- pit limestone mine,and provide the scientific basis for occupational diseases control and prevention. Methods The methods of occupational hygiene investigation,occupational hygiene measurement,occupational health examination and checklist were applied for assessment on current situation of occupational hazards. Results The occupational hazard factors in the production process of the project included limestone dust,noise,high temperature,local vibration,electric welding dust,nitrogen oxide and carbon monoxide,the main factors were limestone dust and noise. The test results showed,the qualified rate of equivalent continuous sound pressure level was 100. 0%,the qualified rate of dust overrun multiple was 100. 0%,occupational hazards of all checking points were in line with occupational exposure limits. Conclusion The management of noise and dust hazards should be strengthened,to reduce or eliminate the occurrence of occupational hazards.