General Electric Compressor Viewed Under UV Illumination

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Before treatment the compressor was viewed under long-wave UV illumination to show hazardous corrosion.  Magnesium corrosion appears as bright white (crank case, cylinders, and fan mount), ferrous corrosion as dark red (motor housing and fan cage) and cadmium can fluoresce orange (nuts, screws and bolts, as well as trace amounts hidden on the fan mount.)