DefinitionA <PITTING METAL-LOSS> is a <METAL LOSS FEATURE> in which corrosion occurs on metal surfaces, where small, localized holes or depressions are formed. Where {([IA <= W < 6A] and [1A >= L < 6A] and [0.5 < L/W < 2]) and not ([W >= 3A] and [L >= 3A])}
Pipeline Operator Forum (POF): POF Specifications and requirements for intelligent pig inspection of pipelines, Version 2.1, 6 November 98, Sect. 4.2 and Figure 2