Inspection of coatings, leakage, cracks, pitting, …in confined spaces (https://www.medexon.com/our-services/confined-space-inspection/)
Example: food industry, stainless steel tanks – control of residual riboflavin after cleaning revealing difficult to clean areas in a tank. The spray shadows reveal the difficult areas to clean in a tank (ref. https://www.flyability.com/casestudies/pharmaceutical-tank-inspection)
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