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The Generation Rate of Respirable Dust from Cutting Fiber Cement Siding Using Different Tools.
Ann Work Expo Health. 2017 03 01; 61(2):218-225.AW

Abstract

This article describes the evaluation of the generation rate of respirable dust (GAPS, defined as the mass of respirable dust generated per unit linear length cut) from cutting fiber cement siding using different tools in a laboratory testing system. We used an aerodynamic particle sizer spectrometer (APS) to continuously monitor the real-time size distributions of the dust throughout cutting tests when using a variety of tools, and calculated the generation rate of respirable dust for each testing condition using the size distribution data. The test result verifies that power shears provided an almost dust-free operation with a GAPS of 0.006 g m-1 at the testing condition. For the same power saws, the cuts using saw blades with more teeth generated more respirable dusts. Using the same blade for all four miter saws tested in this study, a positive linear correlation was found between the saws' blade rotating speed and its dust generation rate. In addition, a circular saw running at the highest blade rotating speed of 9068 rpm generated the greatest amount of dust. All the miter saws generated less dust in the 'chopping mode' than in the 'chopping and sliding' mode. For the tested saws, GAPS consistently decreased with the increases of the saw cutting feed rate and the number of board in the stack. All the test results point out that fewer cutting interactions between the saw blade's teeth and the siding board for a unit linear length of cut tend to result in a lower generation rate of respirable dust. These results may help guide optimal operation in practice and future tool development aimed at minimizing dust generation while producing a satisfactory cut.

Authors+Show Affiliations

Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1090 Tusculum Ave, MS: R5, Cincinnati, OH 45226, USA.Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1090 Tusculum Ave, MS: R5, Cincinnati, OH 45226, USA.Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1090 Tusculum Ave, MS: R5, Cincinnati, OH 45226, USA.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

28395343

Citation

Qi, Chaolong, et al. "The Generation Rate of Respirable Dust From Cutting Fiber Cement Siding Using Different Tools." Annals of Work Exposures and Health, vol. 61, no. 2, 2017, pp. 218-225.
Qi C, Echt A, Gressel MG. The Generation Rate of Respirable Dust from Cutting Fiber Cement Siding Using Different Tools. Ann Work Expo Health. 2017;61(2):218-225.
Qi, C., Echt, A., & Gressel, M. G. (2017). The Generation Rate of Respirable Dust from Cutting Fiber Cement Siding Using Different Tools. Annals of Work Exposures and Health, 61(2), 218-225. https://doi.org/10.1093/annweh/wxw010
Qi C, Echt A, Gressel MG. The Generation Rate of Respirable Dust From Cutting Fiber Cement Siding Using Different Tools. Ann Work Expo Health. 2017 03 1;61(2):218-225. PubMed PMID: 28395343.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Generation Rate of Respirable Dust from Cutting Fiber Cement Siding Using Different Tools. AU - Qi,Chaolong, AU - Echt,Alan, AU - Gressel,Michael G, PY - 2016/05/19/received PY - 2016/11/28/accepted PY - 2017/4/11/entrez PY - 2017/4/11/pubmed PY - 2017/12/5/medline KW - aerodynamic particle sizer KW - crystalline silica KW - dust generation KW - fiber cement SP - 218 EP - 225 JF - Annals of work exposures and health JO - Ann Work Expo Health VL - 61 IS - 2 N2 - This article describes the evaluation of the generation rate of respirable dust (GAPS, defined as the mass of respirable dust generated per unit linear length cut) from cutting fiber cement siding using different tools in a laboratory testing system. We used an aerodynamic particle sizer spectrometer (APS) to continuously monitor the real-time size distributions of the dust throughout cutting tests when using a variety of tools, and calculated the generation rate of respirable dust for each testing condition using the size distribution data. The test result verifies that power shears provided an almost dust-free operation with a GAPS of 0.006 g m-1 at the testing condition. For the same power saws, the cuts using saw blades with more teeth generated more respirable dusts. Using the same blade for all four miter saws tested in this study, a positive linear correlation was found between the saws' blade rotating speed and its dust generation rate. In addition, a circular saw running at the highest blade rotating speed of 9068 rpm generated the greatest amount of dust. All the miter saws generated less dust in the 'chopping mode' than in the 'chopping and sliding' mode. For the tested saws, GAPS consistently decreased with the increases of the saw cutting feed rate and the number of board in the stack. All the test results point out that fewer cutting interactions between the saw blade's teeth and the siding board for a unit linear length of cut tend to result in a lower generation rate of respirable dust. These results may help guide optimal operation in practice and future tool development aimed at minimizing dust generation while producing a satisfactory cut. SN - 2398-7316 UR - https://www.unboundmedicine.com/medline/citation/28395343/The_Generation_Rate_of_Respirable_Dust_from_Cutting_Fiber_Cement_Siding_Using_Different_Tools_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/28395343/ DB - PRIME DP - Unbound Medicine ER -