Thursday, April 15

Screen lifts on platform doors

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The first lot of platform screen doors for the East-West Metro is arriving from China months ahead of schedule, a senior railway official said. The consignment from Hunan in Chinawill be shipped by the first week of May and each set of screen doors will take around 10 days to install.

Platform screen doors are meant to prevent accidents and suicides. Screens for the East-West Metrohave been designed with three sections, including emergency exits that are to be used in the event of a misalignment between the train and platform doors.

In Calcutta, crowding on Metro trains is also seen as a potential challenge to smooth operation. “This is why closing of train and platform screen doors won’t be automated, unlike in many countries,” the railway official said.

After a train arrives, a software signal to the platform doors will get all of them to open simultaneously with the coach doors. The control button to close the doors will be in the driver’s cabin. Cameras installed inside the train and across platforms will help the driver confirm whether passengers have disembarked and boarded safely.

All platforms will have insulation of up to 2.2m from the edge to ensure that even if someone touches the doors by lying down, electrocution won’t be a threat.

There will be multiple trial runs to check the synchronisation of train doors with those on the platforms, railway officials said.

The first phase of the East-West Metro is scheduled to become operational by October between the Sector V and Stadium stations. The curtailed route will have six elevated stations.

Platform doors for the elevated stations will arrive first, officials said. The height of these screen doors are 1.7m each while those for the underground stations are 2.7m, covering floor to ceiling.

The Chinese consortium of Zhuzhou CRRC Times Electric Co Ltd of Hunan and Panasonic Manufacturing (Beijing) Co Ltd is manufacturing the doors.

While doors for the first three stations are expected by the second week of May, those for the next three will arrive in the second week of June, said an official of the Kolkata Metro Rail Corporation (KMRC), the implementing agency for the project.

“Delivery was scheduled for November but we requested the consortium to advance the deadline to May and June,” said Parashuram Singh, managing director of the KMRC.

There will be six screen doors on each platform, matching the number of coaches in every rake. Bangalore-based BEML is building the rakes.

Delhi Metro’s airport line has similar screen doors.

Source: The Telegraph

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