This United States Army manual, Training Circular TC 3-34.530 Inland Petroleum Distribution System Engineer Construction Support June 2022, provides a guide and basic reference for engineer units planning, building, and making major repair of the Inland Petroleum Distribution System (IPDS) in the theaters of operations (TOs). The principal audience for TC 3-34.530 are the commanders and trainers of engineer construction units. This publication applies to all construction engineer units. TC 3-34.530 uses joint terms where applicable. Selected joint and Army terms and definitions appear in both the glossary and the text. TC 3-34.530 applies to the Active Army, Army National Guard/Army National Guard of the United States and United States Army Reserve unless otherwise stated.