Page 17 - CNG/ LNG ESP Participant Guide 2024
P. 17

Module 1: Properties and Characteristics of Natural Gas

            Lesson 1.5: Safety Hazards of Natural Gas

             Hazards of Natural   ▪  Pressure – the most serious hazard for CNG
             Gas                  ▪  Fire
                                  ▪  Asphyxiation (in concentrations above 7% in air)

             NGV Safety                              Operating      Rated Pressure    Required       Minimum
             Features to Address                     Pressure          (MAWP)           Safety     Burst Pressure
             Pressure                             (Service Pressure)                    Factor
                                   Components        3,600 psi         5,000 psi         4:1          20,000
                                     Cylinders       3,600 psi     3,600 psi @ 70°F     2.25:1       8,100 psi


             NGV Safety           ▪  No oxygen in the fuel system (<0.5%)
             Features to Address   ▪  Higher ignition temperature
             Fire                 ▪  Higher flammability range
                                  ▪  Lighter than air






             NGV Safety          ▪  Simple asphyxiate
             Features to Address   ▪  Odorant enhances detection
             Asphyxiation        ▪  Never inhale natural gas in a closed environment

































                                           NGV Essentials and Safety Practices (CNG & LNG)                            © 2024 AFVi All Rights Reserved    Page 1-6
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