The notion of quality control as it applies to internal coatings on carbon steel vessels, tanks, and piping is examined. The development of quality control as an outgrowth of the industrial revolution is traced into present day circumstances. Two types of internal coatings (baked phenolic and epoxy) are described from the standpoint of application procedures and quality control procedures. Parallels are drawn to early ideas of quality control developed for manufactured items; the central theme of which is accountability of costs and predictions of defects. Recommendations are made for participants in the internal coating effort to achieve successful quality control.

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