CONTROL & DESIGN STANDARDS: SURFACE CONTAMINANTS

Specifically, the KSC-C-123H designates surface cleanliness levels per 0.1 square meters of surface area. Three broad categories of the visibly clean status are provided and consist of:
  1. Generally Clean (GC),
  2. Visibly Clean (VC), and
  3. Visibly Clean - inspected with Ultra-Violet Light (UV).
Within these categories, you’ll also find further information on specific contaminant types, sizes and limits.
Table depicting the three levels or surface cleanliness.
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