این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
International Journal of Occupational Hygiene، جلد ۸، شماره ۴، صفحات ۰-۰
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Designing an air-conditioning system to control Isocyanates and dust in woodwork industries
چکیده انگلیسی مقاله Spreading wood particles and attached colored materials in work places can cause many problems for woodwork industry workers. The aim of this study is to design and implement a local exhaust ventilation system to control wood dust and isocyanates simultaneously. The study was conducted on 18 workers in the paint workroom of a wood door industry. At first, an overview of the workplace indoor air was done in 18 workstations. The National Institute for Occupational Safety and Health (NIOSH) method was used to measure the concentration of wood dust and TDI(2,4-toluenediisocyanate). In order to control the worker exposure to the pollutants, a semi-downdraft spray chamber was chosen and implemented on the basis of American Conference of Government Industrial Hygienists (ACGIH) control air pollution method. Orifice scrubber was used to avoid entry of pollutants into the environment. Finally, after the establishment of a new ventilation system, the emissions were remeasured and the results were evaluated. Before design and implementation of local exhaust ventilation system, the emissions in workstations were measured as 0.0015 ± 0.0074 ppm for TDI and 0.01 ± 0.42 mg/m 3 for total dust. Then, the pollution concentrations were measured after implementing the local exhaust ventilation system. The concentration of TDI and total dust were measured respectively as 0.007 ± 0.003 ppm and0.07 ± 0.15 which had a significant (p˂0.05) lower concentration than before the implementation. Also, the measured concentrations after the implementation had met the National Institute of Occupational Safety and Health limits: (TLV TWA = 0.005ppm for TDI and TLW TWA = 0.5 mg/m 3 for total dust). The result shows that the current ventilation system (before implementing and spray chamber) was suitable for dusts, but not for the TDI. So, the workers were exposed to non-standard levels of isocyanate. After design and implementation of the spray chamber, the pollutants were clearly decreased (P< 0.05). In conclusion, the system efficiency for wood dust and TDI were 64% and 60% respectively.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله مهرداد حلمی عاقلی کهنه شهری | mehrdad helmi kohneshahri


محمود محمدیان | mahmoud mohamadian
associate professor in occupational health engineering, department of occupational health engineering, school of public health, mazandaran university of medical sciences, sari, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی مازندران (Mazandaran university of medical sciences)

هما ملک خانی | homa maleck khani
ms student of occupational health engineering, department of occupational health engineering, school of public health, mazandaran university of medical sciences, sari, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی مازندران (Mazandaran university of medical sciences)

مهران پورحسین | mehran pourhossein
phd student of occupational health engineering, department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

نشانی اینترنتی http://ijoh.tums.ac.ir/index.php/ijoh/article/view/250
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/190/article-190-393294.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Original Article(s)
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات