[Emergency Evacuation Ex.] SMRT C830 [829] journey from one-north → walk to Buona Vista

20 August 2011 - 10.28am to 10.53am. The train had an "explosion" (1:20) on its way from one-north to Buona Vista and all passengers had to evacuate through the Emergency Detrainment Ramp and walk the tunnel to Buona Vista station.