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Changes made in 2016 edition of NFPA-52

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  • Changes made in 2016 edition of NFPA-52

    I just bought the 2016 edition of NFPA-52 and wondered if anyone here has taken a look at what changed from 2013?

  • #2
    There has always been a check valve in the Civic GX which prevents, among other things, defueling the fuel system after isolating the tank with the 1/4 turn valve found under the left rear fender. The last NFPA-52 update - March 2015? - required a defuel receptacle in all vehicles. Refuse and commercial truck tank packages all now have a NGV1 and NGV2 filling receptacle as well as a third fitting (likely a NGV1) for defueling. It is interesting that Civic production ended before the requirement took effect - which means the vehicle has to be run to empty after the tank is shut off. And the fuel lines will still have a dangerous 150 psi remaining even so.


    • #3
      Betsy Lillian for NGTNews March 19 2018 - CSA Group, a global provider of testing, inspection and certification services, has published three standards that aim to advance the safety of natural gas vehicle (NGV) fueling.

      CSA NGV 4.3 – Guideline for Temperature Compensation for Compressed
      Natural Gas Vehicle (CNG) Fueling addresses fueling at extreme temperatures and provides guidance on proper temperature compensation.

      CSA/ANSI NGV 4.1 – Compressed Natural Gas Vehicle (NGV) Dispensing Systems has been updated to include new CNG fueling technology used to dispense fuel directly into a vehicle’s on-board fuel storage container.

      CSA/ANSI NGV 5.2 – Vehicle Fueling Appliances (VFA) includes requirements for non-residential fueling appliances that incorporate compression and dispensing into a self-contained appliance, dispense directly into on-board vehicle storage, or deliver to external natural gas storage systems.