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Online Citizen
a day ago
- Automotive
- Online Citizen
SMRT links July Bukit Panjang LRT disruptions to faults in newly installed Power Scada system
SINGAPORE: A nearly two-hour disruption to Bukit Panjang LRT (BPLRT) services on 19 July 2025 has been traced to a fault in the newly installed Power Scada system. Transport operator SMRT confirmed in a statement on 20 July 2025 that its initial investigations found the power fault 'shares a similar failure mode' with an earlier three-hour disruption on 3 July 2025. All 13 stations on the BPLRT were affected during both service interruptions. According to Lam Sheau Kai, president of Singapore's SMRT Trains, the repeated faults were linked to the Power Scada system installed under the Land Transport Authority (LTA) Power Renewal Project. This system, still under its Defects Liability Period, is designed to monitor and control power distribution across the LRT line to improve safety and reliability. On 19 July, the power fault occurred at around 2.45pm, causing four trains to stall between stations. Traction power was restored at approximately 4.00pm, with services gradually resuming from 4.15pm onwards. To reinstate traction power safely, the Emergency Trip System (ETS) was temporarily bypassed. However, the fault in the Power Scada system had affected the ETS, which triggered a network-wide traction power trip. The LTA project team is now carrying out a detailed investigation, including a full design review by the original equipment manufacturer (OEM) contractor. Lam said this aims to strengthen network stability and prevent similar faults from occurring. A key priority is ensuring a stable traction power supply as the system continues commissioning. The BPLRT Power Renewal Project is scheduled for completion by end-2026. SMRT stated it will continue to monitor the system closely as renewal works progress. Lam also thanked commuters for their patience and understanding during both incidents. He emphasised that SMRT remains committed to keeping BPLRT services safe and reliable while the renewal project advances. Past faults and upgrades On 1 July, a signalling fault at Orchard station on the Thomson-East Coast Line caused service delays between Napier and Great World stations for two hours. The Bukit Panjang LRT, which spans 8km, has a history of operational issues. The most recent major disruption occurred on 22 October 2024, when service stalled during the evening peak between Bukit Panjang and Choa Chu Kang. Trains did not resume until the next morning. Initial investigations at the time pointed to a fault in one of the train's wheel assemblies. In response, the Land Transport Authority (LTA) and SMRT announced reduced operating hours from Thursdays to Sundays, starting 14 November 2024 through to 31 October 2025, to accommodate renewal works. These efforts include upgrading the BPLRT's signalling system and testing both new and retrofitted light-rail vehicles. Since 2022, LTA has been progressively implementing a new communications-based train control system to enhance train speed regulation. The full system renewal is now slated for completion by end-2026, delayed by two years due to manpower shortages and supply chain issues stemming from the Covid-19 pandemic. In 2024, the LRT network, which includes the Sengkang-Punggol lines, recorded an average daily ridership of 210,000, reflecting a 4 per cent year-on-year increase.
Straits Times
2 days ago
- Straits Times
Bukit Panjang LRT disruptions in July both linked to newly installed power system: SMRT
Find out what's new on ST website and app. Both incidents were linked to the newly installed Power Scada system, which is part of the ongoing LTA Power Renewal Project. SINGAPORE - Following a nearly two-hour disruption to Bukit Panjang LRT (BPLRT) services on July 19 , transport operator SMRT said that it had concluded on-site investigations the same evening. Its investigation revealed that the power fault 'shares a similar failure mode' to an earlier three-hour long service disruption on July 3 , said Mr Lam Sheau Kai, the president of SMRT Trains, in a July 20 statement on SMRT's Facebook page. All 13 BPLRT stations were affected during both service disruptions. 'Both incidents were linked to the newly installed Power Scada system, which is part of the ongoing LTA Power Renewal Project,' he said. The Power Scada system plays a key role in monitoring and controlling power distribution across the LRT line, enhancing the safety and reliability of train operations. The BPLRT Power Renewal Project is targeted for completion by end-2026. In both incidents, a fault in the system affected the Emergency Trip System (ETS), triggering a traction power trip across the entire network. 'The LTA project team is conducting a thorough investigation, including a full design review by the OEM (original equipment manufacturer) contractor to strengthen network stability and prevent further recurrence. A key focus is ensuring that the traction power supply remains stable, especially while the system is still being commissioned,' said Mr Lam. Top stories Swipe. Select. Stay informed. Singapore Priority for singles, higher quota for second-timer families to kick in from HDB's July BTO exercise Singapore 1 in 3 vapes here laced with etomidate; MOH working with MHA to list it as illegal drug: Ong Ye Kung Asia Johor Bahru collision claims lives of e-hailing driver and Singapore passenger Sport Arsenal arrive in Singapore for pre-season matches with AC Milan and Newcastle Business Crypto exchange Tokenize to shut down Singapore operations Singapore More initiatives and support for migrant community announced at Racial Harmony Day event Singapore ComfortDelGro to discipline driver who flung relative's wheelchair out of taxi He added that SMRT would continue to monitor the system closely as works progress. 'We thank all affected commuters for their patience and understanding during the disruption. SMRT remains fully committed to keeping BPLRT services running safely while renewal works continue,' said Mr Lam.
Straits Times
04-07-2025
- General
- Straits Times
Power distribution system may be linked to Bukit Panjang LRT disruption: SMRT
Sign up now: Get ST's newsletters delivered to your inbox The Power Scada system plays a key role in monitoring and controlling power distribution across the LRT line. SINGAPORE - A system that monitors and controls power distribution may be linked to the power trip that caused service on the Bukit Panjang LRT (BPLRT) system to be disrupted for almost three hours on July 3. In a post on train operator SMRT's Facebook page on July 4 , Mr Lam Sheau Kai, the president of SMRT Trains, said preliminary investigations found that the power trip could be linked to the Power Scada system . The system plays a key role in monitoring and controlling power distribution across the LRT line, enhancing the safety and reliability of train operations, he added. Mr Lai said the Power Scada system had developed a fault, which then affected the E mergency Trip System (ETS) and caused the traction power on the LRT line to be tripped. The system is part of the BPLRT Power Renewal Project , which is targeted for completion by end 2026. Mr Lam said LTA and SMRT are conducting an investigation to address the issue, which includes a comprehensive design review of the system to enhance network stability. 'We will continue to closely monitor the system as the renewal works progress,' he said. 'On behalf of the BPLRT renewal project team, we apologise for the inconvenience caused and thank commuters for their patience and understanding,' added Mr Lam. On July 3 , a power fault led to a disruption at all stations on the BPLRT line. Train services were stalled from about 8.50am and progressively resumed from 11.30am. As a result of the power fault, five trains were stalled between stations, while seven trains were stationary at platforms, said Mr Lam. Commuters who were on trains stalled on the track were guided by SMRT employees to the nearest station, he added. To allow the resumption of train services, Mr Lam said the ETS was bypassed, which reinstated traction power to the trains. Additional staff were also deployed to man all stations till the end of the day as an added safety measure, he added.
