In Parliament
Written Reply by Minister for Transport Khaw Boon Wan to Parliamentary Question on Incidences of Freon Gas Leaks on MRT and LRT Rail Systems
3 October 2017
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Mr Leon Perera asked the Minister for Transport
a. how many incidences of freon gas leaks on the MRT and LRT rail systems have occurred over the past ten years; and
b. what is the risk posed to commuters by such gas leaks.
Reply by Minister for Transport Khaw Boon Wan:
1. Over the past ten years, there have been 23 instances of Freon gas leaks on trains. Freon gas can interact with moisture in the air to form an odourless white smoke. The smoke poses no health risk to the public. As soon as a leak is reported, affected commuters are de-trained at the next station, and the train withdrawn for repair.