Page 40 - WM E-Learning Handbook
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Slide Topic                     Content                                    Notes
Main Defueling Methods
                         Compressor inlet procedure
                         Vent-to-atmosphere procedure
                         Vehicle-to-vehicle transfer (fuel

                            reduction)

Compressor Inlet         Transfers fuel back to CNG station
Procedure                Time-Fill must have capacity to

                            accept the fuel
                         Follow defueling panel operating

                            instructions
                         Compressor must be running

Compressor Inlet Style
Defueling Panel

                        Compressor Inlet Style
                            Defueling Panel

Vent-to-Atmosphere       Requirements
Procedure                     Vent Pipe
                              Grounded, sealed connection
                              Pressure regulation
                              Fire extinguisher

                         Check with local air quality agency

Technician Safety and Awareness Training for NGVs  © 2018 NGVi All Rights Reserved         Page 38
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