▁Category : Objects ▁observed ▁by ▁stell ar ▁occ ult ation <0x0A> </s> ▁The ▁D amp ier ▁to ▁Bun bury ▁Natural ▁Gas ▁P ipeline ▁( DB NG P ) ▁is ▁the ▁longest ▁natural ▁gas ▁pipeline ▁in ▁Australia . ▁It ▁is ▁ 6 6 0 mm ▁in ▁diameter , ▁which ▁also ▁makes ▁it ▁one ▁of ▁Australia ' s ▁largest ▁in ▁terms ▁of ▁transmission ▁capacity . ▁At ▁the ▁time ▁of ▁its ▁commission ing ▁in ▁ 1 9 8 4 , ▁it ▁was ▁one ▁of ▁the ▁longest ▁gas ▁pip elines ▁in ▁the ▁world . ▁ ▁The ▁pipeline ▁runs ▁within ▁Western ▁Australia ▁from ▁a ▁point ▁near ▁With nell ▁Bay , ▁on ▁the ▁Bur rup ▁Pen ins ula ▁near ▁D amp ier , ▁to ▁Bun bury ▁in ▁the ▁south - west ▁of ▁the ▁state . ▁ ▁It ▁car ries ▁natural ▁gas , ▁most ▁of ▁which ▁enters ▁the ▁pipeline ▁at ▁the ▁domestic ▁gas ▁plant ▁associated ▁with ▁the ▁North ▁West ▁Sh elf ▁Vent ure ▁project . ▁The ▁other ▁main ▁in let ▁point ▁is ▁approximately ▁ 1 3 5   km ▁south ▁of ▁D amp ier , ▁where ▁one ▁of ▁the ▁sales ▁gas ▁pip elines ▁from ▁Var anus ▁Island ▁Process ing ▁Hub ▁connect s ▁with ▁the ▁DB NG P . ▁In ▁June ▁ 2 0 0 8 , ▁following ▁a ▁pipeline ▁ru pt ure ▁and ▁explos ion ▁at ▁the ▁Var anus ▁Island ▁facility , ▁the ▁DB NG P ▁carried ▁additional ▁volumes ▁of ▁gas ▁from ▁the ▁North ▁West ▁Sh elf ▁plant ▁to ▁the ▁south - west ▁of ▁the ▁state , ▁for ▁a ▁period