Amends the federal pipeline definition for “transporting gas” in 49 U.S.C. 60101(a)(21) to change how that phrase is presented and to add two specific exclusions: certain movements of gas in gathering lines and within plant piping are no longer included in the statutory phrase. The change narrows the scope of what counts as "transporting gas" for statutory purposes, which can affect which facilities or flows are covered by related pipeline safety requirements.