MIL-HDBK-1004/10
A variation of visual inspection is the installation of small
metal samples, or coupons, electrically connected to the structure at
various critical points on the structure. Periodic removal and evaluatio
of these samples including visual observation and weight loss can be used
infer the corrosion activity of the structure being monitored.
3.6
Consequences of Underprotection. If the measured potentials o
structure are not as negative as required by one or more of the applicabl
criteria for cathodic protection, some corrosion of the structure may occ
However, the corrosion of the structure will be reduced in proportion to
amount of current supplied. When only parts of the structure do not reac
the
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