About 19,000 commuters were affected by the peak-hour delay due to a train fault which occurred on the North-South line on Monday morning, said train operator SMRT at a briefing.
The delay occurred at about 8.10am on a south-bound train from Sembawang to Marina Bay MRT station. A 12-car push-out was deployed to move the faulty train towards Ang Mo Kio station. About 1,800 passengers were detrained at the station.
SMRT chief executive Desmond Kuek said the timing of Monday's incident, which came days after fare increases were announced last Thursday, was "unfortunate". Operating costs have gone up because repair and maintenance were needed to keep the system at a high level of sustainability and reliability, said Mr Kuek.
He noted that train withdrawals have come down from 3.3 to 2.2 per 100,000km.
Here is a blow-by-blow account given by SMRT during a press briefing.
|8.11am||A southbound train develops a fault between Yio Chu Kang and Ang Mo Kio station, causing the train to trip.|
|8.11-8.20am||Train's automatic protection system kicks in. Service brakes are applied as a safety feature. Attempts to reset a circuit breaker fails.|
|8.20am||SMRT decides to launch a 12-car rescue operation, which involves connecting a rescue train to the defective train and towing it to the nearest station.|
|8.25am||A rescue train, also filled with passengers, is coupled to the defective train.|
|8.32am||Free bus services are activated, followed by bridging bus services.|
|8.48am||Coupled trains start to move towards Ang Mo Kio station.|
|8.54am||Doors of the defective train are opened manually at Ang Mo Kio station. Passengers of defective train are detrained. Train services are resumed via the Ang Mo Kio station's middle track.|
|9.13am||Passengers in rescue train are detrained at Ang Mo Kio station.|
Compiled by Derrick Ho