天然气长输管线专业术语英文对应中文意思

The applied coating shall be able to withstand hydrostatic testing and pigging operations for a 30-year project design life.
The pipeline will be periodically inspected using internal inspection tools (intelligent pigs).

请教专业人士标红的 pigging operation 和 intellect pigs对应的中文专业术语是什么?