Respirable Dust Control

2019 ◽  
pp. 137-156
Author(s):  
Pramod Thakur
Keyword(s):  
Dust Control ◽  
Respirable Dust

scholarly journals Occupational Exposures in an Equestrian Centre to Respirable Dust and Respirable Crystalline Silica

2019 ◽  
Vol 16 (17) ◽  
pp. 3226 ◽  
Author(s):  
Kathleen Bulfin ◽  
Hilary Cowie ◽  
Karen S. Galea ◽  
Alison Connolly ◽  
Marie Ann Coggins
Keyword(s):  
Geometric Mean ◽  
Occupational Exposures ◽  
Crystalline Silica ◽  
Dust Control ◽  
Respirable Dust ◽  
Small Scale ◽  
Water Suppression ◽  
Horse Riding ◽  
Increased Risk ◽  
Full Shift

Sand-based products are regularly used as footing material on indoor equestrian arenas, creating a potential occupational exposure risk for respirable crystalline silica (RCS) for equestrian workers training and exercising horses in these environments. The objective of this study was to evaluate an equestrian worker’s personal RCS and respirable dust (RD) exposure. Sixteen personal full-shift RD measurements were collected from an equestrian worker and analysed for RD, quartz and cristobalite. Geometric mean exposures of 0.12 mg m−3 and 0.02 mg m−3 were calculated for RD and RCS concentrations, respectively. RCS exposures of between 0.01 to 0.09 mg m−3 were measured on days when the indoor arena surface was not watered, compared to lower exposures (<LOD-0.03 mg m−3) on days when the indoor arena was watered (p < 0.01); however, manual watering is time intensive and less likely to be implemented in practice. This small-scale study provides new data on RCS and RD exposures among equestrian workers. RCS exposures are within the range considered to be associated with increased risk for lung cancer. The use of dust control solutions such as water suppression should be promoted for equestrian work in horse riding arenas. Equestrian workers need to receive occupational health training on the health risks associated with RCS exposure.

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.

The Research and Application of Efficient Dust Control System for Whole-Rock Comprehensive Mechanization Driving Face

2014 ◽  
Vol 955-959 ◽  
pp. 1020-1023 ◽  
Author(s):  
Wen Nie ◽  
Nai Guo Wang ◽  
Wei Min Cheng ◽  
You Ying Ma ◽  
Ya Ru Sun
Keyword(s):  
Control System ◽  
Short Distance ◽  
Coal Dust ◽  
Dust Control ◽  
Respirable Dust ◽  
High Concentration ◽  
Air Curtain ◽  
Random Movement ◽  
Comprehensive Mechanization ◽  
Purification System

To prevent high concentration dust on whole-rock comprehensive mechanization driving face efficiently, air curtain dust drawing and purification system were developed. This system is consisted of two sections, air curtain dust drawing device and dust purification system device. It determines optimized parameters of air curtain drawing dust device by combining site actual conditions and has realized short distance 3d dust absorbing and random movement. After using the efficient dust control system for whole-rock comprehensive mechanization driving face on south main return way,the average dust-laying rate of total coal dust and respirable dust in manually operation department, respectively reach 91.6% and 90.5%.It shows that this system is a efficient means for dust control of whole-rock comprehensive mechanization driving face.

Simulation of Dust Control in Coal Mining

2013 ◽  
Vol 671-674 ◽  
pp. 1624-1627
Author(s):  
Xiu Dong Yang ◽  
Long Zhe Jin
Keyword(s):  
Steady State ◽  
Field Configuration ◽  
Dust Control ◽  
Control Measures ◽  
Respirable Dust ◽  
Cfd Model ◽  
Mining Operations ◽  
Face Area ◽  
The Face ◽  
The Impact

Many different dust control measures have been used to reduce or control the generation of dust during mining operations. As respirable dust control is affected by the overall airflow pattern, a CFD model of the face area could be created to estimate the impact of these factors on airflow in the face area. a steady state CFD model of the airflow developed in the paper with typical field configuration of the line curtain, including leakage along the roof and floor, and with the scrubber idle. This should provide insight for further possible steps for improving dust control.

scholarly journals Development of a roof bolter canopy air curtain for respirable dust control

2017 ◽  
Vol 69 (1) ◽  
pp. 33-39 ◽  
Author(s):  
W.R. Reed ◽  
G.J. Joy ◽  
B. Kendall ◽  
A. Bailey ◽  
Y. Zheng
Keyword(s):  
Dust Control ◽  
Respirable Dust ◽  
Air Curtain ◽  
Roof Bolter ◽  
Canopy Air Curtain

scholarly journals Field study results of a 3rd generation roof bolter canopy air curtain for respirable coal mine dust control

2019 ◽  
Vol 7 (1) ◽  
pp. 79-87 ◽  
Author(s):  
W. R. Reed ◽  
M. Shahan ◽  
S. Klima ◽  
G. Ross ◽  
K. Singh ◽  
...  
Keyword(s):  
Coal Mine ◽  
Occupational Safety ◽  
Dust Control ◽  
Respirable Dust ◽  
Dust Exposure ◽  
Air Curtain ◽  
Roof Bolter ◽  
Study Results ◽  
Canopy Area ◽  
Canopy Air Curtain

AbstractA 3rd generation roof bolter canopy air curtain (CAC) has been developed and constructed by J.H. Fletcher & Co., Inc. As with the previous generation of the CAC, this design uses the principle of providing uniform airflow across the canopy area as recommended by the National Institute for Occupational Safety and Health. The new modifications include a plenum that is constructed of a single flat aluminum plate, smaller-diameter airflow openings, and a single row of perimeter nozzles designed to prevent mine air contaminated by respirable dust from entering the CAC protection zone. Field testing was conducted on this new 3rd generation design showing reductions in coal mine respirable dust exposure for roof bolter operators. Dust control efficiencies for the CAC for the left bolter operator (intake side) ranged from approximately 26%–60%, while the efficiencies for the CAC for the right bolter operator (return side) ranged from 3% to 47%.

Development of the Tunnel Wet Dust Precipitator and Testing

2013 ◽  
Vol 800 ◽  
pp. 8-12
Author(s):  
Ling Shi ◽  
Cheng Wu Yang ◽  
Xin Ming Yu ◽  
Xian Wei Luo
Keyword(s):  
Stainless Steel ◽  
Flow Rate ◽  
Modular Design ◽  
Collection Efficiency ◽  
Performance Testing ◽  
Volumetric Flow Rate ◽  
Axial Direction ◽  
Dust Control ◽  
Respirable Dust ◽  
Dust Precipitator

The tunnel wet dust precipitator (TWDP) is designed and applied to the underground mine tunnel dust control. The TWDP is a modular design with the disc which the radiant fine stainless-steel filament and nozzle. Discs are used in serial in axial direction in the TWDP to lift the collection efficiency, and discs are parallel in a section to enlarge the volumetric flow rate. The TWDP, which is connected with the local fan, is mounted at the discharging mine platform, and the experiment is conducted for its performance testing. Results show that the collection efficiency for respirable dust is above 80%.

Study of integrated vortex ventilation and dust removal system in mechanized excavation face

2020 ◽  
pp. 095440892093679
Author(s):  
Xiaofei Liu ◽  
Jifa Qian ◽  
Enyuan Wang ◽  
Zhenguo Zhang
Keyword(s):  
Numerical Simulation ◽  
Field Experiments ◽  
Dust Control ◽  
Dust Removal ◽  
Mine Safety ◽  
Respirable Dust ◽  
Dust Collector ◽  
Mining Operations ◽  
Swirling Jet ◽  
Removal System

The aerosolized dust produced during coal mining operations pollutes underground air environment and increases the risk of lung diseases in coal miners, such as pneumoconiosis. Aiming to solve the dust pollution in mechanized excavation face, the integrated vortex ventilation and dust removal system is designed based on swirling jet flow theory. The design principles and technological parameters of the major components of integrated vortex ventilation and dust removal (IVVDR) system, namely vortex ventilation device and wet dust collector are described systematically. Through numerical simulation and field experiments, the dust control and dust removal effects of IVVDR system were analyzed and tested. The numerical simulation results show that the swirling jet flows produced by wall-attached duct can control most of total and respirable dust in the area between working face and exhausting air outlet. In addition, the IVVDR system provides better control and removal effect of smaller respirable dust. In field application, the IVVDR system has better performance compared with the long-compression short-suction (LCSS) ventilation. In conclusion, the concentration of total and respirable dust in purified air are below 10 mg/m3, and in accordance with the mine safety regulations.

scholarly journals Dusts Control operations in Ririwai Mines, Kano State, Nigeria

2021 ◽  
pp. 29-36
Author(s):  
Engr. Amosu C.O. ◽  
Keyword(s):  
Soil Water ◽  
Best Practice ◽  
Control Strategies ◽  
Underground Mine ◽  
Dust Control ◽  
Respirable Dust ◽  
Control Methods ◽  
Metallic Particles ◽  
The Impact ◽  
Water Vegetation

Respirable dust is everywhere (in the surface and underground mine) operations and its environs. Ririwai Tin mine is laden with dust of metallic particles of Arsenic (As), Chromium (Cr), Lead (Pb) and Zinc (Zn). These particles are also found in the soil. Continuous inhalation of dust could lead to irreversible diseases. This paper addresses the control of dust, using previous review of prevailing metallic concentrates. This research answers questions like which are the dust control strategies to be adopted by Ririwai tin mine to obtain best practice? What challenges will Ririwai tin mine face when applying dust control methods in their operation? What is the impact of dust laden with metallic particles on soil, water, vegetation and man in Ririwai tin mine?

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