Page 49 - CNG/ LNG ESP Participant Guide 2024
P. 49

Module 6: CNG Depressurizing and Defueling

           Lesson 6.1: Depressurize or Defuel


             Depressurize or      ▪  Depressurize
             Defuel?                  o  If repair is downstream of the fuel system isolation valve or the component can
                                         be isolated by the closing the cylinder valve
                                  ▪  Defuel
                                      o  If cylinders, valves, or PRDs need repair



































































                                           NGV Essentials and Safety Practices (CNG & LNG)                            © 2024 AFVi All Rights Reserved    Page 6-2
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