Control measures for airborne ammonia and respirable dust exposure in swine barns

2021 ◽  
pp. 1-15
Author(s):  
Alvin C. Alvarado ◽  
Bernardo Z. Predicala
Keyword(s):  
Control Measures ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Swine Barns

Silicosis in rhinestone-manufacturing workers in South China

2019 ◽  
Vol 69 (7) ◽  
pp. 475-481 ◽  
Author(s):  
C Wen ◽  
X Wen ◽  
R Li ◽  
S Su ◽  
H Xu
Keyword(s):  
South China ◽  
Dust Control ◽  
Control Measures ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Quartz Content ◽  
Total Dust ◽  
Silica Dust ◽  
Exposure Limit ◽  
And Control

Abstract Background Silicosis is caused by long-term exposure to silica dust. Crystal rhinestone workers can be exposed to high levels of silica dust and are at risk of silicosis. Aims To explore silicosis cases, silica dust exposure and control measures in a rhinestone factory in South China. Methods We extracted and analysed data on new silicosis cases reported to China’s occupational disease and occupational health information monitoring system between 2006 and 2012 from a rhinestone factory in South China. We measured the quartz content of bulk dust, static total and respirable dust samples. Results Ninety-eight silicosis cases were reported between 2006 and 2012. The mean duration of silica dust exposure was 9.2 years (range 3–16). Drilling and polishing workers accounted for 96 (98%) of cases. We collected 1479 static samples including 690 total dust and 789 respirable dust samples. Mean dust levels for drilling were 1.01 mg/m3 (range 0.20–3.80) for total dust and 0.51 mg/m3 (range 0.04–1.70) for respirable dust. Mean dust levels for polishing were 0.59 mg/m3 (range 0.20–2.10) for total dust and 0.28 mg/m3 (range 0.08–0.71) for respirable dust. Over a third [289/789 (37%)] of total dust samples and 129/690 (19%) respirable dust samples exceeded the national permissible exposure limit. Conclusion Exposure to silica dust, ineffective dust control measures and inefficient health surveillance may have contributed to the incidence of silicosis in the factory we studied. Identification of silica dust exposure and effective dust control measures would reduce the risk of silicosis in rhinestone workers.

scholarly journals Monitoring Respirable Dust Exposure in Fettling Work Environment of a Foundry: A Proposed Design Intervention

2020 ◽  
Vol 10 (6) ◽  
pp. 759-767
Author(s):  
Milap Sharma ◽  
Krishan K. Kataria ◽  
Narendra M. Suri ◽  
Suman Kant
Keyword(s):  
Low Cost ◽  
Geometric Mean ◽  
Weather Condition ◽  
Operating Conditions ◽  
Control Measures ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Exposure Level ◽  
Control Intervention ◽  
And Control

Foundry workers are exposed to numerous health hazards, which includes respirable dust exposure as a prominent health issue. Apart from metallic dust, respirable crystalline silica (RCS) is generated during the fettling operation, which is very hazardous and a leading cause for silicosis. Evaluation and control of such hazards deserve particular attention in order to reduce the dust exposure level upto the permissible limits. In present study, an attempt was made to propose a low-cost design control intervention utilizing sensor based intelligence (ATmega328P microcontroller and an optical dust-sensor, SHARP GP2Y1010AU0F) for monitoring the dust exposure, followed by virtual ergonomics approach in CATIAV5R20. The proposed device was tested under several operating conditions. The results indicated that the prototype was sensitive to dust, having higher average dust density values under the dust haze weather condition (arithmetic mean (AM): 0.2590 mg/m3, geometric mean (GM): 0.2350 mg/m3) and fettling work-section (AM: 0.2550 mg/m3, GM: 0.2164 mg/m3) respectively, as compared to other conditions. Also, biomechanics analysis yielded the spine compression values lesser than the recommended limits, validating that the proposed fettling booth models could be considered as suggestive engineering control measures in conjunction with the designed prototype, so as to minimize the respirable dust exposure levels.

scholarly journals Association between Respirable Dust Exposure and Lung Function Deterioration among Construction Site Workers

2020 ◽  
Vol 119 (11) ◽  
pp. 1789
Author(s):  
Nur Nabilah Mohamad Sulaiman ◽  
Normah Awang ◽  
Nurul Farahana Kamaludin
Keyword(s):  
Lung Function ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Construction Site

scholarly journals Occupational Exposure to Flour Dust. Exposure Assessment and Effectiveness of Control Measures

2020 ◽  
Vol 17 (14) ◽  
pp. 5182 ◽  
Author(s):  
Andrea Martinelli ◽  
Fabiola Salamon ◽  
Maria Luisa Scapellato ◽  
Andrea Trevisan ◽  
Liviano Vianello ◽  
...  
Keyword(s):  
Occupational Exposure ◽  
Ventilation System ◽  
Industrial Hygiene ◽  
Control Measures ◽  
Dust Exposure ◽  
Exposure Level ◽  
Local Exhaust Ventilation ◽  
Exposure Limit ◽  
Exposure Levels ◽  
Flour Dust

The adverse effects associated with exposure to flour dust have been known since the 1700s. The aim of the study was to assess the occupational exposure to flour dust in Italian facilities, identify the activities characterized by the highest exposure, and provide information to reduce workers’ exposure. The study was performed in different facilities such as flourmills (n = 2), confectioneries (n = 2), bakeries (n = 24), and pizzerias (n = 2). Inhalable flour dust was assessed by personal and area samplings (n = 250) using IOM (Institute of Occupational Medicine) samplers. The results showed personal occupational exposure to flour dust over the American Conference of Governmental Industrial Hygiene (ACGIH) and the Scientific Committee on Occupational Exposure Limit (SCOEL) occupational limits (mean 1.987 mg/m3; range 0.093–14.055 mg/m3). The levels were significantly higher for dough makers in comparison to the dough formers and packaging area subjects. In four bakeries the industrial hygiene surveys were re-performed after some control measures, such as installation of a sleeve to the end of pipeline, a lid on the mixer tub or local exhaust ventilation system, were installed. The exposure levels were significantly lower than those measured before the introduction of control measures. The exposure level reduction was observed not only in the dough making area but also in all bakeries locals.

scholarly journals Assessment of Worker Exposure to Occupational Organic Dust in a Hemp Processing Facility

2020 ◽  
Vol 64 (7) ◽  
pp. 745-753
Author(s):  
Melinda Gardner ◽  
Sue Reed ◽  
Maggie Davidson
Keyword(s):  
Cannabis Sativa ◽  
Respiratory Health ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Breathing Zone ◽  
Organic Dust ◽  
Code Of Practice ◽  
Exposure Limit ◽  
Processing Facility ◽  
Personal Sampling

Abstract The cultivation and processing of industrial hemp, Cannabis sativa L., is a developing industry in Australia. Exposure to hemp dust is demonstrated as producing reactive and respiratory health effects, potentially causing permanent lung disease or damage. The aim of this study was to assess the airborne organic dust concentrations generated in an Australian hemp processing facility. Personal sampling, in the breathing zone of exposed workers was undertaken for exposure to respirable dust, along with parallel static sampling for airborne concentrations of inhalable and respirable dust fractions. Both static and personal sampling showed that respirable dust concentrations (mg m−3) exceeded the Australian Institute of Occupational Hygienists (AIOH) recommended maximum exposure limit of 1 mg m−3 (respirable fraction) for dusts not otherwise specified, with mean exposures (mg m−3) of M = 1.33, standard deviation (SD) = 1.09 (range 0.07–3.67 mg m−3) and M = 4.49, SD = 4.49 (range 0.77–11.08 mg m−3). The results of the investigation indicate that workers in the hemp processing industry are at risk of developing permanent and disabling respiratory disease due to high dust exposure. There is no Australian occupational exposure limit specifically for hemp dust. It is recommended further research is needed and industry-specific guidance material or model code of practice developed to effectively control exposures.

Respirable Dust Exposure: Symptoms and Effect on Lung Function of Industrial Workers

2013 ◽  
Vol 465-466 ◽  
pp. 1196-1201 ◽  
Author(s):  
Nuur Azreen Paiman ◽  
Abdul Mutalib Leman ◽  
Azian Hariri ◽  
Marzuki Ismail
Keyword(s):  
Lung Function ◽  
Palm Oil ◽  
Lung Function Test ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Industrial Workers ◽  
Health Administration ◽  
Safety And Health ◽  
Function Test ◽  
Palm Oil Mill

Work environment factors such as air quality in the industry have become a public concern recently especially due to issues related to respirable dust. Most of industrial workers are exposed to dust during their daily work activities. A preliminary study was conducted at a paper based mill, palm oil mill and automotive plant in Malaysia to monitor the personal exposure of respirable dust. Personal sampling and questionnaires were administrated in purposed to determine the respiratory health symptoms and supported by a pulmonary lung function test. The result of the study showed most of the workers in paper based mill were exposed to respirable dust when the Time Weightage Average (TWA) result was above the permissible exposure limit which is 5 mg/m3 and 3 mg/m3 from Occupational Safety and Health Administration (OSHA) and American Conference of Governmental Industrial Hygienists (ACGIH) standard respectively. From the survey feedbacks, out of 30 symptoms, there are only five symptoms that are significant with the year of exposure. For pulmonary lung function test, there were 81.81% workers are in normal of spiro status for paper based mill. Meanwhile, for palm oil mill and automotive plant, there were almost 53.33% and 65.63% workers in normal spiro status respectively. However, there was no significant relation with the variables noted. Therefore, for a better future for industrial workers, some engineering control and approach have been suggested to the safety and health team to control machines that are fully operated and consider looking into the dust concentration.

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