Recently, smoke was observed inside a train carriage on Chengdu Metro Line 4 during operation, drawing public attention. In response, Chengdu Metro promptly clarified that the incident was caused by a malfunction in the train’s air conditioning system, which led to condensation buildup and the release of steam—not a fire or hazardous gas leak. Staff immediately activated emergency protocols, safely evacuated passengers, and began inspecting and repairing the affected equipment. Air quality tests confirmed normal conditions, with no risk to passenger health. The involved train has been taken out of service while further investigation into the root cause continues. Chengdu Metro stated it will enhance routine inspections and maintenance to ensure passenger safety. Although no injuries occurred, the incident serves as a reminder for the public to remain calm and follow staff instructions during unexpected situations to ensure everyone’s safety.
近日，成都地铁4号线一列列车在运行过程中车厢内出现烟雾，引发乘客关注。对此，成都地铁官方迅速作出回应，称事件系因列车空调系统故障导致冷凝水积聚并产生蒸汽，并非火灾或有害气体泄漏。工作人员已第一时间启动应急预案，组织乘客有序疏散，并对相关设备进行检修。经检测，现场空气质量正常，未对乘客健康造成影响。目前，涉事列车已退出运营，故障原因正在进一步排查中。成都地铁表示将持续加强设备巡检与维护，保障乘客出行安全。此次事件虽未造成人员伤亡，但也提醒公众在遇到类似突发情况时保持冷静，听从工作人员指引，确保自身与他人安全。
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