Forty-eight MRT stations to upgrade ventilation and smoke control

Installation of a S$9.1-M Local Sequential Controller from CNA Group will be completed in 2016.

In a release, the S$9.1 million LSC system from CNA Group will continue to ensure that temperature, humidity and airflow at MRT stations are maintained within comfortable and safe levels in both normal and emergency situations

The LSC system monitors and controls two separate systems in the MRT station, namely, the Tunnel Ventilation system and the Environmental Control System. The TLV provides an acceptable ventilated environment within the tunnel for the operation of trains under normal congested conditions and an effective means of controlling smoke flow during emergency conditions.

The ECS serves to provide smoke control during a fire emergency and interfaces with the Fire Protection System to shutdown appropriate equipment and operates the Smoke Purge System, which consists of a smoke control panel, smoke purging fans and air supply fans.

The S$9.1 million contract is for CNA to supply, install, test & commission, engineer and project manage the new LSC and the decommissioning of the existing LSC in the 48 MRT stations after the new LSC is completed. This upgrading exercise is expected to be completed in December 2016.

Commenting on the contract, CNA’s CEO and President, Mr Michael Ong said: "This project will further strengthen CNA’s expertise and competency in environmental controls for the MRT environment, which will be viewed as our core capability for future MRT projects.”

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