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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.
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