Laboratory Investigations Applied to Wood Dust Emmited by Electrical Hand-Held Belt Sander

Dado, Miroslav; Mikušová, Lucia; Hnilica, Richard

doi:10.1515/mspe-2018-0021

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…For sanding wood with hand-belt sander the traditional engineering control measures include integral dust extraction unit, mobile local exhaust ventilation, and downdraft Table [4]. As observed in this pilot study, it is clear that use of hand-held belt sander without appropriate engineering control enhances risks related to spruce wood dust inhalation exposure.…”

Section: Discussionmentioning

confidence: 71%

An Evaluation of On-Tool System for Sanding Dust Collection: Pilot Study

Dado

Lamperová

Kotek

et al. 2020

Management Systems in Production Engineering

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Hazards identification is essential step in framework of occupational health & safety (OH&S) management system. The task of spruce wood sanding with hand-held power belt sander is considered as a significant resource of exposure to wood dust. Dust from spruce wood is hazard that can cause negative health effects such as asthma and chronic bronchitis. A dust collection box is a commonly used technical measure for reducing exposure to wood dust for this task in practice. The objective of this pilot study was to evaluate the effectiveness of commercially available dust collection box at reducing exposure to wood dust during the task of sanding spruce wood using hand-held power belt sander. Laboratory experiment involved sanding spruce planks (250 mm × 50 mm × 500 mm) in longitudinal direction using belt sander (Bosch, PBS 75 A) with 120 grit sanding belt. Spruce dust mass concentrations were sampled using an aerosol monitor (TSI Inc., DustTrak DRX 8533) in the breathing zone of operator. Inhalable and respirable dust concentrations were both significantly lower (P < 0.0001) when dust box was attached to belt sander compared with sander without a dust box. Results from this pilot study indicate that dust collection box is efficient technical measure for decreasing exposure to aerosol mass concentration during sanding spruce wood with hand-held belt sander.

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Section: Discussionmentioning

confidence: 71%

An Evaluation of On-Tool System for Sanding Dust Collection: Pilot Study

Dado

Lamperová

Kotek

et al. 2020

Management Systems in Production Engineering

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“…Sawdust and chips have a higher proportion of bound water and they are harder to dry than fine dust particles [52,55]. However, the moisture values which were determined should not have a significant effect on the results of wood dust ignition experiments [48,49,56]. The hygroscopic properties of wood dust in relation to its size were already studied [57].…”

Section: Determination Of Moisture Content Of Waste Wood Dustmentioning

confidence: 99%

“…The finest dust was produced from oak (Figure 4) with the largest fraction of 71 μm to 90 μm. The granulometric composition of the individual samples is influenced by the nature of the abrasive processes by which the samples were produced and the type of trees which were used [1,20,55,56]. The examined samples of dust were produced in various technological operations, so their granulometric composition also differs.…”

Section: Sieve Analysismentioning

confidence: 99%

Ignition of Deposited Wood Dust Layer by Selected Sources

Tureková

Marková

2020

Applied Sciences

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The main waste of wood sanding technology is wood dust. The formation of wood dust affects its behaviour. Wood dust can be in a turbulent form and behaves explosively or in a settled form where it becomes flammable. Dust particles are barely detectable by the naked eye, wood dust still presents substantial health, safety, fire and explosion risks to employees. This article deals with the evaluation of ignition temperature and surface temperature of deposited wood dust samples by selected ignition sources. The influence of selected physical properties of wood dust, the size of the contact area between the ignition source and the combustible material, the spatial arrangement during the ignition and the application time of the ignition source are analysed. The paper describes the behaviour of a 15 mm deposited layer of wood dust of spruce (Picea abies L.), beech (Fagus silvatica L.). oak (Quercus petraea Liebl.) caused by three potential ignition sources—a hot surface, an electric coil and a smouldering cigarette. Prior to the experimental determination of the ignition temperature, dust moisture content which did not significantly affect the ignition phase of the samples, as well as sieve analysis of tested samples were determined. The lowest minimum ignition temperature on the hot plate, as an important property of any fuel, because the combustion reaction of the fuel becomes self-sustaining only above this temperature, was reached by the oak dust sample (280 °C), the highest by the spruce dust sample (300 °C). The ignition process of wood dust was comparable in all samples, differing in the ignition time and the area of the thermally degraded layer. The least effective ignition source was a smouldering cigarette.

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“…Based on the acquired results it can be stated that in the sanding process there wasn´t created the higher share of dust particles with increasing the working temperature, which means that there were no increased health and safety risks related to the produced wood dust (Martinka et al 2014;Dado et al 2018;Marková et al 2018;Tureková et al 2019;Mikušová et al 2019).…”

Section: Woodmentioning

confidence: 99%

Wood dust granular analysis in the sanding process of thermally modified wood versus its density

Očkajová

Barcík

Kučerka

et al. 2019

BioRes

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This paper aimed to define the density fluctuations of thermally modified wood. This was achieved by the granular analysis of wood dust. The wood dust was acquired by sanding completed using a narrow belt sander. The samples were taken from spruce, oak, and meranti wood types that were thermally modified at temperatures of 160 °C, 180 °C, 200 °C, and 220 °C. The results showed the shares of ≤ 0.08 mm wood dust particles and how their share was related to the temperature treatment; residue curves manifested the wood dust stratification in individual sieves and their density. The shares and densities of the wood dust were statistically analysed, and the statistical significance of the analysed values was calculated. An increased temperature decreased the wood density and decreased the share of the ≤ 0.08 mm wood dust particles. The wood dust shares in the 0.032-mm sieve and at the bottom (the finest particles) of the sieving machine also decreased; however, the share increased in the 0.125-mm sieve.

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Laboratory Investigations Applied to Wood Dust Emmited by Electrical Hand-Held Belt Sander

Cited by 5 publications

References 10 publications

An Evaluation of On-Tool System for Sanding Dust Collection: Pilot Study

An Evaluation of On-Tool System for Sanding Dust Collection: Pilot Study

Ignition of Deposited Wood Dust Layer by Selected Sources

Wood dust granular analysis in the sanding process of thermally modified wood versus its density

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