The following are the areas which require attention to minimize corrosion:

• Bimetallic contacts

• Faying surface

• Crevices

• Moisture traps

• Water traps

• Metals in contact with moisture absorbent materials

• Inaccessibility

• Areas of condensation

• Features which reduce the paint thickness

• Welds

• Oil, grease, and rust patches

• Fluid movements

• Joints (threaded, riveted and screwed)

• Closed sections and entrapment areas

• Mechanical factors

• Corrosion awareness

Effects of some factors stated above on design is briefly described in the following sections.