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Feedback of cleaned exhaust air into workplace atmospheres - experiences on testing equipment.

Blome-H; Heimann-M; Pfeiffer-W
Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 90-108, 1990 Nov; (Part II):1090-1093
Results were presented of testing equipment measurements evaluating the feedback of cleaned exhaust air into workplace atmospheres. The requirements for capturing and precipitating systems were noted to be differentiated according to dust collecting machines for mobile use and central exhaust systems. Dust capturing machines were equipped with precipitators primarily supposed to protect the main filter from being damaged by sharp edged or pointed objects. Precipitators were frequently combined with dust collecting containers or were integral elements of them. The cleaning of certain systems was intended to separate the dust deposited on the filter and to transport it to the collecting basin. Dust from some systems has had to be disposed of without dust occurrence, for example using densely locking, robust plastic boxes incorporated in dust collecting containers. Measurements were performed in several industrial facilities to evaluate the efficiency of dust capture in addition to dust precipitation. These evaluations took place in foundry iron casting cleaning rooms and in rooms for the hand grinding of quartz (14808607) containing construction elements.
Control-technology; Chemical-analysis; Mineral-dusts; Air-quality-monitoring; Respiratory-system-disorders; Airborne-dusts; Dust-inhalation; Workplace-studies
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Conference/Symposia Proceedings
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DHHS (NIOSH) Publication No. 90-108
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Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA