This standard describes the AMPP internal corrosion direct assessment (ICDA) process for wet natural and/or raw gas pipeline and piping systems (i.e., WG-ICDA). It is intended to serve as a guide for applying the WG-ICDA process to onshore and offshore natural and/or raw gas pipeline and piping systems that:
a)Contain or will contain (as a function of operating temperature and pressure) saturated wet gas as demonstrated on a water dew point curve for that specific gas composition after verifying both the gas moisture content and its associated water holding capacity; or,
b)Contain free water; or,
c)Operate below the water dew point or a gas pipeline which transitions through its water dew point; or,
d) Are not covered by dry gas internal corrosion direct assessment (DG-ICDA),
e) Are not covered by liquid petroleum internal corrosion direct assessment (liquid ICDA); and,
f) Meet the feasibility requirements described in Paragraph 3.4 of this standard.