FOR IMMEDIATE RELEASE

Power faults on North-South, East-West lines and

Circle Line on 14 October

1. We are sorry for the disruption to service on the North-South, East-West lines (Woodlands to Jurong East and Queenstown to Gul Circle) and Circle Line (Harbourfront to Serangoon) during peak-hour traffic last evening (14 October).

2. From preliminary findings, there was a breakdown of insulation of a power cable between Tuas Link and Tuas West Road stations. A circuit breaker at Tuas West Road station should have kicked in to isolate the fault, but it did not, resulting in the NSEWL power system to trip.

3. To restore power to the NSEWL, there was an attempt to draw power from Buona Vista Intake substation (BVI). However, this was done without first isolating the fault, resulting in a power supply disruption to CCL as BVI also serves CCL.

4. The insulation fault has been identified and isolated and the faulty component of the circuit breaker has been replaced. Train services are running normally today.

5. We are working with LTA to conduct a full investigation into the premature failure of these components, together with the original equipment manufacturers who supplied the parts.