Public Domain Picture: This historical drawing, provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH),

By: CDC/ Barbara Jenkins, NIOSH, Courtesy: Public Health Image Library

Views: 584 | Downloads: 1

This historical drawing, provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH),

This work, identified by PublicDomainFiles.com, is free of known copyright restrictions.

Title:

This historical drawing, provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH),

Description:

This historical drawing, provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH), detailed how to modify a basic electrical circuit on a Mine Safety Appliances (M.S.A.), electrostatic precipitator, model CT-43134, to handle a 6 volt direct current (D.C.) operation. The device filtered unburned particles from industrial burning operations, such as in the case of coal-fired electrical power plants, by electrically charging, or 'ionizing' the particles. The positively-charged particles then move toward negatively-charged collecting electrodes, where they are trapped. The particles adhere to the collection plates and build up into larger particles. The plates are then tapped, or 'rapped', which loosens the partcles that then fall into hoppers for collection and disposal. The drawing was published in the May, 1952 journal entitled, 'Occupational Health'.

Creator:

CDC/ Barbara Jenkins, NIOSH

Source:

Public Health Image Library

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Date Added:

October 27, 2012

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