In　this　study,　the　explosion　hazard　and　suppression　technology　were　investigated　in　a　concentrated　ventilation　tube　filled　with　diesel　fuel　under　room　temperature　and　environmental　pressure.　A　high-speed　camera　(model:　nac　HX-3)　and　pressure　sensors　(model:　CY-YD-205)　were　used　to　record　the　flame　picture　and　explosion　overpressure.　New　explosion　suppression　balls　and　an　ordinary　corrugated　flame　arrester　were　employed　as　explosion　suppression　apparatuses.　The　results　indicate　that　the　explosion　flame　can　propagate　into　the　adjacent　fuel　tank　through　the　ventilation　tube　under　room　temperature　and　environmental　pressure,　causing　the　second　explosion.　In　addition,　the　ordinary　corrugated　flame　arrester　fails　to　suppress　explosion,　and　the　new　explosion　suppression　balls　have　better　anti-explosion　effect.　Compared　to　the　case　of　a　smooth　ventilation　tube,　the　maximum　explosion　overpressure　can　be　significantly　decreased　from　about　552.5　kPa　to　35.0　kPa　in　the　ignited　chamber　after　the　new　explosion　suppression　balls　are　introduced　into　the　tube.　The　superior　explosion　suppression　effect　of　the　explosion　suppression　balls　can　be　due　to　the　hollow　porous　structures.　The　porous　structures　not　only　can　significantly　increase　the　specific　surface　area　and　heat　loss,　but　also　can　effectively　segment　and　weaken　the　reaction　surface.　©　2021,　Editorial　Staff　of　EXPLOSION　AND　SHOCK　WAVES.　All　right　reserved.