Grid Map: An Aid in Elimination of Air Contaminants in Workplaces

Abstract

Abstract A method has been devised for collecting, processing, and presenting data from the measurements of the concentration of airborne pollutants. The method is called “Grid Map.” A direct-reading instrument is used for collecting information on the concentration of some airborne pollutant at a number of points in a workroom. The points are arrayed in a pattern covering the entire room. The method has utilized from 16 to more than 100 points. The results from the measurements are processed in a computer. Utilization of spline functions for interpolations between the points makes it possible for the system to increase the density of the original grid. The processed results from the measurements are graphically displayed as a grid pattern superimposed on a representation of the examined workroom. The grid's height above the baseline at any given point designates the contaminants concentration at that point. The method has been used in two cases for identifying sources of solvent emission and for assessin...