Airborne emissions produced by the interaction of a carbon dioxide laser with glass, metals, and plastics.
Authors
Fleeger A; Moss CE
Source
Proceedings of the International Laser Safety Conference, Cincinnati, Ohio, November 27-30, 1990. Charscan SS, ed., Orlando, FL: Laser Institute of America, 1991 Jan; :3-3
Link
NIOSHTIC No.
00211856
Abstract
An on site study was conducted at a laser facility that processes scientific glassware in response to a request from the management at that site to evaluate and identify airborne emissions generated during laser cutting. Materials were cut by a carbon-dioxide laser and included glassware, metal bands, and plastic sheets. The findings indicated an overexposure to respirable fused silica (7631869) dust on an 8 hour basis. The 8 hour personal breathing zone sample recorded for the operator was ten times the NIOSH recommended exposure limit of 0.05mg/m3. During the cutting operations with fused quartz a detectable odor was generated, having come from a binder in the graphite pad used as a laser beam stop. Sampling results collected for organic vapors during the cutting of various plastic samples revealed significant exposures to ethyl- acrylate (140885). The authors recommend that improvements be made to the ventilation system in place at the site; the use of respiratory protection may be necessary. Eye protectors were suggested to reduce the glare and brightness, and it was also suggested that general good housekeeping procedures be followed.
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