Mon, Jul 20, 2009 - Page 3 News List

FEATURE: Neihu line becomes source of headaches

WHEN TWO LINES MEET Critics said that to ensure reliability, the Muzha and Neihu lines should both have been converted to use the Bombardier system

By Mo Yan-chih  /  STAFF REPORTER

Passengers on the Neihu-Muzha MRT line are evacuated from a train near Gangqian Station after a malfunction on July 10.

PHOTO: FANG PIN-CHAO, TAIPEI TIMES

The long-delayed Neihu MRT Line in Taipei began operations on July 4 after seven years of construction, but frequent malfunctions and a major system shutdown have sparked concerns about the line’s stability.

A sudden power outage on the Muzha and Neihu Line on July 10 forced some 700 passengers to walk along the tracks to the nearest station and thousands more to find alternative transportation until the service resumed the following day.

The line has also experienced at least eight malfunctions and false alarms since its inauguration — from sudden stops to train doors closing too quickly or not opening at all. Such frequent malfunctions have highlighted problematic system integration and poor system testing, experts and local city councilors said.

The 14.8km Neihu Line, which cost NT$63 billion (US$1.8 billion), is a medium capacity extension of the Muzha Line. Rather than adopting the system used on the Muzha Line — France’s Matra — the Neihu Line was built by Montreal-based Bombardier.

“Each medium capacity system has a different control system. Integrating two different systems is taking a great risk with passenger safety,” said Lawrence Wang (藍武王), a professor of transportation at Mingdao University.

To integrate the two systems, trains, signs, communication, electrical and mechanical systems on the Muzha Line should switch over to the Bombardier system. Taipei City Secretariat Deputy Director Tan Gwo-guang (譚國光) said that aside from 51 trains that had yet to be converted for usage on the new system, the process of integration was almost complete.

Tsai Tien-ho (蔡天和), director of the electrical and mechanical engineering department at Taipei Rapid Transit Corp (TRTC), said that no other country had ever attempted to integrate two systems on a subway line.

The US has adopted a different system for a subway extension line, but the original line was rebuilt to be compliable with the new system, he said.

Tan, who was also a member of the inspection committee at the Ministry of Transportation and Communication, said insufficient inspection of the system before full operations were launched made it difficult to detect all the problems, adding that similar system shutdowns could happen again if TRTC and the city’s Department of Rapid Transit Systems (DORTS) failed to stabilize the system soon.

DORTS director Tom Chang (常歧德) said the July 10 shutdown was caused by an outage at the “uninterruptible” power supply system at the Zhongshan Junior High School Station.

Chang denied the outage was caused by problematic system integration, but would not provide explanations for the power outage.

The Democratic Progressive Party (DPP) and some critics blame the problem-plagued Neihu Line on President Ma Ying-jeou (馬英九) and accuse him of making a series of bad decisions when commissioning the line as former Taipei mayor, including making it only medium capacity system and switching contractors from Matra to Bombardier.

DPP Taipei City Councilor Hsu Chia-ching (徐佳青), who voted against the city government’s proposal to adopt a medium capacity system, said many city councilors and residents had called on Ma’s administration to adopt a high capacity system to reflect population growth and rapid development in the area.

“The Neihu Science Park was already in the planning stage. How could Ma not know that the population in Neihu would grow?” she said, calling on him to take responsibility for the poor system integration and cramped space in the cars.

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