Metro forced to pull trains from service after parts explode beneath carriages

Written by admin on 01/06/2019 Categories: 苏州美甲美睫培训学校

A fire on a train ignited by an electrical fault that caused motor parts to explode. The fire did not spread but three trains have been pulled out of service. Photo: Supplied A fire on a train ignited by an electrical fault that caused motor parts to explode. The fire did not spread but three trains have been pulled out of service. Photo: Supplied
苏州美甲美睫培训学校

A fire on a train ignited by an electrical fault that caused motor parts to explode. The fire did not spread but three trains have been pulled out of service. Photo: Supplied

A fire on a train ignited by an electrical fault that caused motor parts to explode. The fire did not spread but three trains have been pulled out of service. Photo: Supplied

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Exploding train motor parts caused by a series of electrical faults have forced Metro to pull three trains off the rails.

The fault is limited to Metro’s fleet of Siemens trains that were introduced in 2003. The Siemens trains suffered major brake failures in 2006, when they were also pulled from service for safety reasons after a series of platform overshoots. That problem has since been fixed.

The trains were pulled from service on Tuesday following crisis talks between Metro management and the Rail, Tram and Bus Union, which raised fears that it was potentially unsafe for maintenance staff to work near the trains.

The faults all relate to the trains’ static inverter units, which convert DC electricity from the overhead wires into AC power that drives the train motor. Parts of the units called capacitors have been exploding and blowing the covers off the units, which sit beneath the train carriage. Metro has used heavy-duty ties called grunt cargo straps to lash the units onto the undercarriages as a short-term fix.

Metro is also using recycled capacitors to replace faulty components.

An instruction notice written after Tuesday’s crisis meeting states: “As we have no capacitors on stock, we are allowed to cannibalise units where the capacitance check reveals a faulty capacitor, but we are not allowed to take any capacitors from a unit which had a reported explosion!”

Defective train units have been taken to the Newport workshop for repair.

Metro said just three of its fleet of 36 Siemens trains had been found to have an electrical fault forcing its removal, and the rest were running fine.

“We are confident the capacitors on the remainder of the Siemens fleet are operating without fault,” spokeswoman Larisa Tait said.This story Administrator ready to work first appeared on 苏州美甲美睫培训学校.

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