Project Showcases – SMRT Trains Ltd

The SLA team headed to Bishan Depot for the SMRT Trains Safety & Security Forum on 12 October 2020. SLA Chairman – Mr Dave Ng was the Guest of Honour to present the plaques and certificates to the winning teams of the WSH Innovation Awards for Logistics & Transport Sector 2020 from SMRT Trains Ltd. The forum was a hybrid of a physical award ceremony and a virtual livestream platform with special programme line-ups for their staff to participate. 

Project Showcase: SMRT Air Con Motor Carbon Dust Removal (KHI & SIE) (Silver Award)

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Previously, the Air Conditioning Compressors in older fleets of SMRT trains used direct current motors that produced carbon brush particles when it was running. These carbon brush particles will cause the motors to have reduced resistance resulting in Aircon fault and warm saloon. The cleaning methods as suggested by the original equipment manufacturer which required blowing off the motor interior created a thick carbon brush cloud discharge and that is harmful for the worker and environment.

To resolve this issue, a group of SMRT engineers introduced a new cleaning method of blowing and vacuuming carbon dust at the same time with the aid of an in-house fabricated motor enclosure. Made from PVC leather, this enclosure is lightweight, cost-efficient, durable and importantly, highly effective in cleaning motors without any carbon dust discharge to the environment.

Project Showcase: Temporary Speed Restriction (TSR) Management System (Bronze Award)

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Whenever a rail track defect was detected, a Temporary Speed Restriction (TSR) would be imposed to reduce the speed of the trains traversing over it until the rectification. The exact location of the defect is indicated on site by chainages number with a Signal Controller (SIGC) which will work out which track circuits are affected to impose the recommended speed for the trains. 

Previously, SIGC would manually work out which track circuits are involved before finally imposing the required TSR speed via the signalling workstation. This manual process was tedious with risks possible human error. With the TSR management system, the required track circuits are now automatically computed by the system based on user’s input of the location and chainage number. SIGC will just need to verify that the location and chainage input value are correct before imposing the required TSR speed via the signaling workstation accordingly.

Project Showcase: Ergonomic design of tools for in-situ Guide-wheel inspection (Certificate of Commendation)

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Effective and thorough inspection of Guide wheel in situ is extremely critical for the safety & operation of the Bukit Panjang Light Rail Transit. During the weekly maintenance inspection, the procedure is very demanding as a heavy jack is being used to push the Guide wheel. Two men are required to properly operate the bottle jack. Thus, a very light weight foot operated extender hydraulic cylinder is used for its weekly maintenance inspection. It is pre-designed to fit snugly into the space between the guide beam and safety disc with minimum operation of foot pump against compulsive manual extension of top screw on the jack.

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