Thread: Lng & cng

  1. #1
    MembersZone Subscriber

    Join Date
    May 2008

    Default Lng & cng

    This question was posed to me by a student in a recent vehicle rescue training program that I was instructing. Does the compressed natural gas (CNG) or liquefied natural gas (LNG) utilized to fuel cars and trucks have Mercaptan added for leak indentification ?

    Any ideas on this ?

  2. #2
    MembersZone Subscriber

    Join Date
    May 2008


    I was able to find out a little bit more regarding this:

    Dear Mr. Feicht,

    Thank you for your email. We are not experts on the specific requirements for fuels however the Energy Information Administration indicates that strict regulations require producers of Natural Gas to add the mercaptan odor for safety. Because most natural gas vehicles are fueled from residential or commercial natural gas lines, the fuel in the vehicle should contain the odor. Residential refueling units like Phill, which is used for the Honda Civic CNG vehicle, compress the natural gas from a standard household gas line so they would contain the odor.

    For more definitive information, you may want to contact others who would be in a better position to address this.

    Energy Information Administration

    Department of Energy’s Alternative Fuels and Advanced Vehicles Data Center


  3. #3
    Forum Member

    Join Date
    May 2001
    Mornington Peninsula.Victoria.Australia

    Default Odour

    In Australia for domestic purposes yes however wholesale it is not so clear.
    I believe two gas tanker loads a week of odourless gas are transported interstate for manufacturing purposes. They pass not far from my home.
    These views are my own and not of either my brigade or any other organisation.

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