Determination of exposure to respirable quartz in the stone crushing units at Azendarian-West of Iran.

Abstract:

:The purpose of this study is to describe the personal exposure to respirable dust and quartz and in stone crushing units located at west of Iran. A size of 40 personal samples and 40 stationary samples were obtained and analysis was done by X-ray diffraction (XRD). The results of personal sampling were shown the concentrations of respirable dust exposure level in workers of process, hopper and drivers were 1.90, 2.22, 1.41 times greater than Occupational Safety and Health Administration permissible exposure limit (OSHA PEL). The average value of total dust and respirable dust emission from stationary sources was 9.46 mg/m(3), 1.24 mg/m(3) respectively, showing that 13.8 % of total dust is respirable. The efficiency of local exhaust ventilation (LEV) to control of particles inside of industrial units was greater than 99%. It is concluded from this research the particulate generated from stone crushing activities contain a significant amount of respirable particle. The amount of free silica in stone quartz is 85 to 97 percent that emission of particles effect to health workers. LEV has important effect in the removal of silica particles in stone crushing units. The worker of hoppers still exposed to silica more than standard limits.

journal_name

Ind Health

journal_title

Industrial health

authors

Bahrami AR,Golbabai F,Mahjub H,Qorbani F,Aliabadi M,Barqi M

doi

10.2486/indhealth.46.404

subject

Has Abstract

pub_date

2008-08-01 00:00:00

pages

404-8

issue

4

eissn

0019-8366

issn

1880-8026

pii

JST.JSTAGE/indhealth/46.404

journal_volume

46

pub_type

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