Hydraulic fracturing (“fracking”) processes involve injecting sand to keep pores of a well open. When the well is brought back online after fracking, some of that sand burps back up to the surface and into a separator. The unwanted byproducts, paraffin and sand, accumulate in the separator tanks or vessels and must be removed to prevent irreparable damage to the separator’s fire tube. However, removing the sand is a costly process resulting in lost production and man-hours. To address the costly replacement of separators due to sand buildup and improve the efficiency of their separator preventative maintenance plan, Noble Energy created a sand measurement method using intrinsically safe optical gas imaging cameras, specifically, the FLIR GFx320.