13 January 2005
Disruption of West Rail and Light Rail services
KCR West Rail (WR) and Light Rail (LR) services were disrupted this morning in two separate incidents in Yuen Long and Tuen Mun districts respectively.
The tripping of power supply to a train at WR Yuen Long station occurred at 9:29 a.m. and triggered the safety protection mechanism of the power supply system, leading to a temporary isolation of electricity supply for southbound services between Long Ping Station and Tai Lam Tunnel.
The incident train stalled at Yuen Long Station and West Rail services between Tin Shui Wai and Tsuen Wan West stations were disrupted.
Twelve emergency buses were deployed to run between Tsuen Wan West and Tin Shui Wai stations via Kam Sheung Road, Yuen Long and Long Ping stations at five- to ten-minute intervals. A total of about 1,000 passengers were affected.
Emergency repairs were immediately carried out. Normal services started to resume at 10:08 a.m. when the incident train was removed from the site.
Preliminary investigations revealed that the tripping was caused by a short circuit in the pantograph assembly of the train. The Kowloon-Canton Railway Corporation (KCRC) would conduct a detailed investigation into the circuit breaker of the pantograph assembly to find out the cause of the tripping.
In another development, intermittent tripping of the power supply to the Pui To Road area occurred first at 9:15 a.m. and then at 10:30 a.m. The first tripping affected services briefly for 10 minutes and the Corporation initially suspected it was caused by a train fault. The power supply tripped again at 10:30 a.m. and KCRC staff immediately carried out physical inspection of each section of the overhead line system on site in the whole area. The problem was found to be caused by a damage to the insulation of a cable supplying electricity to the overhead line. After emergency repair, normal services resumed at 12:45 p.m.
During the affected period, northbound services of four Light Rail routes – 505 (Sam Shing Terminus – Siu Hong), 507 (Ferry Pier Terminus – Tin King), 751 (Tin Yat – Yau Oi) and 614 (Ferry Pier Terminus – Yuen Long Terminus) were diverted, affecting services at 12 stops in Tuen Mun. A total of about 500 passengers were affected.
Twenty-one feeder buses were deployed to supplement Light Rail services. The buses ran on three routes, namely between On Ting and Siu Hong, Sam Shing Terminus and Leung King and between Sam Shing Terminus and Siu Hong, at six- to eight-minute intervals.
Throughout the two incidents, announcements were continuously made inside stations and on trains to inform passengers of the disruption. Additional staff were deployed at stations to provide assistance to passengers.
Mr W K Tsui, General Manager-West Rail Operations, said the Corporation would conduct a detailed investigation into both incidents.
KCRC apologised for the inconvenience caused to passengers.